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Optics: What is light ?

First, we can safely and correctly state that light is energy. We know that light is electromagnetic energy and that, in terms of wavelength, it represents just a very small part of a broad electromagnetic spectrum. It will be helpful to pursue our understanding of the term wavelength a bit further at this point. In one general and very useful definition, light is that portion of the electromagnetic spectrum that the human visual system is capable of detecting. That is to say, it is the electromagnetic energy that we can see. Under normal daytime conditions, the human visual system has a maximum sensitivity to light with a wavelength of 0.56 micrometers (µm). Let us convert this number (0.56 µm ) to a more meaningful and comprehensible form. A meter represents a length of about 40 in, or a little more than one yard. A millimeter is l/l000th of a meter, the thickness of about 10 pages in a book. A micrometer (µm) is l/l000th of a millimeter and the peak wavelength for visible light is about half of that. Therefore, one wavelength of visible light is approximately equal to 1/200th the thickness of a single page in a book.

As the wavelength of the energy collected by the eye increases or decreases, the color of that light as perceived by the eye will change.

At the peak wavelength of 0.56 µm, the light is seen as yellow. When the wavelength decreases to about 0.50 µm the light appears green, while at 0.48 µm the color we see is blue. Moving in the other direction from the peak wavelength, at a wavelength of 0.60 µm, the light appears to be orange, and then, as the wavelength reaches 0.65 µm, we see the light as red. This is what we refer to as the visible spectrum, ranging from violet (0.45 µm) to red (0.70 µm), with a peak sensitivity to the color yellow, at a wavelength of 0.56 µm. The visible spectrum and its relationship to the electromagnetic spectrum are shown in next figures that illustrate the relative sensitivity of the eye as a function of wavelength or color.

 


 


Óptica: ¿qué es la luz?

Inicialmente, podemos decir en forma segura y correcta que la luz es energía. Sabemos que la luz es energía electromagnética y que, en términos de longitud de onda, la misma representa sólo una pequeña porción de un amplio espectro electromagnético. Será útil  seguir nuestra investigación del término longitud de onda un poco mas en este punto. En una definición general y muy útil, la luz es la porción del espectro electromagnético que el sistema visual humano es capaz de detectar. Es decir, es la energía electromagnética que podemos ver. Bajo condiciones normales de día, el sistema visual humano tiene una máxima sensibilidad a la luz con una longitud de onda de 0,56 micrómetros (µm). Hagamos la conversión de éste número (0,56 µm ) a una forma mas significativa y comprensible. Un metro representa una longitud de aproximadamente 40 pulgadas, o un poco mas de una yarda. Un milímetro es la 1/1000 parte de un metro, el espesor de aproximadamente 10 páginas de un libro. Un micrómetro (µm) es la 1/1000 parte  de un milímetro y la longitud de onda pico para la luz visible es aproximadamente la mitad de aquella. Por lo tanto, una longitud de onda de luz visible es aproximadamente igual es 1/200 parte del espesor de una sola página de un libro.

A medida que la longitud de de onda de la energía recolectada por el ojo humano se incrementa o disminuye, el color de dicha luz según es percibida por el ojo cambiará.

A la longitud de onda pico de 0,56 µm, la luz es vista como amarilla. Cuando la longitud de onda disminuye a aproximadamente 0,50 µm, la luz aparece verde, mientras que a 0,48 µm el color que vemos es azul. Moviéndose en la otra dirección del pico de longitud de onda, a una longitud de onda de 0,60  µm, la luz aparece como anaranjada, a medida que la longitud de onda alcanza los 0,65 µm, vemos la luz como roja. Esto es a lo que nos referimos como el espectro visible, extendiéndose desde el violeta (0,45 µm) al rojo (0,70 µm), con un pico de sensibilidad hacia el color amarillo, a una longitud de onda de 0,56 µm. El espectro visible y su relación con el espectro electromagnético son mostrados en las siguientes figuras que ilustran la sensibilidad relativa del ojo en función de la longitud de onda o color.

Fig. 1 -Wavelenghts of the electromagnetic, optical, and visible spectra. - Longitudes de onda del espectro electromagnético, óptico y visible.

Fig. 2 - Spectral sensitivity of the human visual system - Sensibilidad espectral del sistema visual humano.

 

Velocity, Wavelength, and Frequency

This wavelength concept may not be fully understood without some additional considerations. The topics of velocity and frequency, and their relationship to wavelength, must be introduced and discussed at this point. During the historical review of optics it was noted that, after many years of experimentation and several false starts, the velocity at which light travels in a vacuum was very accurately determined to be 299,793 km/s. For purposes of these discussions a rounded-off value of 300,000 km/s (3 X 108 m/s) will be used to represent the speed of light in air. The enormity of this speed is best visualized when we understand that, traveling at this speed, we would be able to travel around the world seven and one half times in a single second.

Another example that will be helpful in illustrating the speed involved deals with recent experiments conducted to measure the distance from the earth to the surface of the moon. After the astronauts had placed a mirror assembly on the surface of the moon, it was possible to project a pulse of laser energy from here on earth, to that mirror and to detect its reflection when it had returned to its point of origin.

Knowing the time involved for the round-trip, and the speed at which light travels, one could then calculate the distance from the source to the mirrors, i.e., earth to moon. Quite incredibly, the time required for the light to travel from the earth to the moon and return was only 2.5 seconds; that is fast!

In order to establish a relationship between the wavelength and the velocity of light that can be more easily understood and applied to our understanding of optics, the hypothetical example illustrated in next figure will be helpful. Consider a typical light source, such as the heated filament in an incandescent lamp. In order to further develop a sense for how light behaves; imagine this source to be pulsating, emitting light in a continuous wave within which the energy level is constantly and rapidly increasing to a maximum and then decreasing to a minimum. We have established that the light travels away from the filament at a speed of about 300,000 km/s. If a hypothetical energy-level detector were placed as shown, at a fixed distance from the source, it would register those maximum and minimum energy values as the wave impinged on the detector. By definition, the wavelength of this energy is the distance that the wave travels in the time that it takes the detector to record two consecutive maximum readings.

A heated filament is known to emit energy over a broad spectrum which includes the visible spectrum and part of the infrared band. To simplify our example, assume that a green filter is placed between the source and the detector as is shown in the figure. Knowing the wavelength of the transmitted light to be 0,5 µm (5 X 10-7 m/cycle), and the speed at which this light is traveling (3 X 108 m/s), we can compute the frequency at which the detector will register maximum readings using the following formula:

 

Velocidad, longitud de onda y frecuencia.

El concepto de longitud de onda puede no ser completamente comprendido sin consideraciones adicionales. Los tópicos de velocidad y frecuencia, y su relación con la longitud de onda, deben ser introducidos y discutidos en este punto. Durante la revisión histórica de la óptica, se hizo notar que, luego de muchos años de experimentación y varios arranques fallidos, la velocidad a la cual viaja la luz en el vacío fue determinada  con precisión en un valor de 299.793 km/s. Para propósitos de estas discusiones un valor redondeado de 300.000 km/s (3 X 108 m/s) será usado para representar la velocidad en la luz en el aire. La enormidad en esta velocidad es mejor visualizada cuando comprendemos que, viajando a esta velocidad, podríamos viajar alrededor del mundo siete veces y media en un solo segundo.

Conociendo el tiempo involucrado para el viaje periférico, y la velocidad a la cual la luz viaja, uno podría entonces calcular la distancia desde la fuente hasta los espejos, o sea, tierra a luna. Increíblemente, el tiempo requerido para que la luz viaje de la tierra a la luna y retorne es de 2,5 segundos, ¡eso si que es rápido!

De manera de establecer una relación entre la longitud de onda y la velocidad de la luz que pueda ser mas fácilmente comprendida y aplicada a nuestro entendimiento de la óptica, el ejemplo hipotético es ilustrado en la figura siguiente. Considérese una fuente de luz típica, tal como un filamento caliente en una lámpara incandescente, emitiendo luz en una onda continua dentro de la cual el nivel de energía es constante y rápidamente incrementado a un máximo y luego disminuido a un mínimo. Hemos establecido que la luz se aleja del filamento a una velocidad de aproximadamente 300.000 km/s. Si un hipotético detector de nivel de energía fuera colocado como se muestra, a una distancia fija de la fuente, el mismo registraría aquellos valores máximos y mínimos de energía como una onda colisionando sobre el detector. Por definición, la longitud de onda de esta energía es la distancia que la onda viaja en el tiempo que toma al detector registrar dos lecturas máximas consecutivas.

Un filamento caliente se sabe que emite energía en un amplio espectro que incluye el espectro visible y parte de la banda infrarroja. Para simplificar nuestro ejemplo, asumamos que un filtro verde es colocado entre la fuente y el detector como se muestra en la figura. Sabiendo que la longitud de onda de la luz transmitida sea de 0,5 µm (5 X 10-7 m/ciclo), y la velocidad a la cual la luz esta viajando ( 3 X 108 m/s), podemos obtener la frecuencia a la cual el detector registrará las lecturas máximas usando la siguiente fórmula:

frecuencia = velocidad / longitud de onda

 

In keeping with our goal, which is to develop sense for what light is and how it behaves, we now realize that when we see a green light source, the energy from that source is approaching our eyes at a velocity of 3 X 108 m/s, and its energy level is pulsating at a frequency of 6 X 1014 times each second.

As was noted earlier, this discussion has neglected the difference in velocity of light in air as compared with that in a vacuum. The fact is that light in air is slowed by about 0.03 percent, which is indeed negligible for these purposes. A second significant point along these same lines is that measurements have proved the velocity of electromagnetic energy in a vacuum is constant, regardless of its wavelength. In air, the change in velocity with wavelength is so small as to be negligible for our purposes. Therefore, all colors that we see travel at the same speed. It follows, then, that because frequency is inversely proportional to the wavelength, the frequency for each color must be different. In the case of the visual spectrum, that frequency ranges from 7.5 X 1014 for blue light to 6.0 X.1014 for green light to 4.5 X 1014 Hz for red.

 

 

Manteniéndonos en nuestro objetivo, el cual es el de tomar sentido de qué es la luz y cómo se comporta, ahora nos damos cuenta de que cuando vemos una fuente de luz verde, la energía de dicha fuente se aproxima a nuestros ojos a una velocidad de 3 X 108 m/s, y su nivel de energía está pulsando a una frecuencia de 6 X 1014 veces cada segundo.

Como se hizo notar anteriormente, esta discusión ha desechado la diferencia en la velocidad de la luz en el aire comparada con la misma en el vacío. El hecho es que la luz en el aire es ralentizada en aproximadamente 0,03 por ciento, lo que es en verdad descartable para estos propósitos. Un segundo punto significativo a lo largo de estas mismas líneas es que las medidas han probado que la velocidad de la energía electromagnética en el vacío es constante, sin interesar su longitud de onda. En el aire, el cambio de velocidad con la longitud de onda es tan pequeño que es descartable para nuestros propósitos. Por lo tanto, todos los colores que vemos viajan a la misma velocidad. Se concluye entonces, de que dado que la frecuencia es inversamente proporcional a la longitud de onda, la frecuencia para cada color debe ser diferente. En el caso del espectro visible, las frecuencias se extienden desde 7,5 X 1014 para la luz azul a 6,0 X 1014 para la luz verde, a 4,5 X 1014 Hz para el rojo.

 

 

Fig. 3- A hypothetical test procedure that will permit one to determine the frecuency of an emitted wave of energy, knowing the speed at which it travels and its wavelength. - Un procedimiento hipotético de ensayo que permitirá a uno determinar la frecuencia de una onda de energía emitida.

Another example, taken from today's technology, will be helpful in establishing our sense for what light is and how it behaves. A common electro-optical instrument of recent years is the laser range finder (LRF). The LRF contains a very pure light source in the form of a laser, a set of projection optics including a shutter, a set of receiving optics, a detector, and a precise timing mechanism. The LRF functions by generating a pulse of laser energy, which is projected to a target where it is reflected back toward the LRF, collected and imaged by the receiving optics onto the detector. The precision timer measures the time required for the pulse to travel to the target and return. With knowledge of the velocity at which light travels, it is then a simple matter to compute the distance to the target. One common LRF configuration utilizes a laser with a wavelength of 1.06 µm and projected pulse duration of 20 ns. From this information we can generate a realistic description of that pulse including its physical size and characteristics.

To generate the pulse the LRF shutter must be opened and then closed in a precise manner, with a total elapsed open time of 20 X 10 -9 s. We know that light travels at a velocity of 3 X 108 m/s. next figure illustrates the system being discussed. When the shutter has been open for the required 20 X 10-9 s, the leading edge of the pulse will have traveled 20 X 10-9 s * 3 X 108 m/s = 6 m. The shutter will then close, and the result would be a 6 m long pulse of laser energy, traveling toward the target at a speed of 3 X 108 m/s.

We can determine one other significant characteristic of this pulse of laser energy. We have said that the energy emitted from a laser has a wavelength of 1.06 pm, or 1.06 X 10-6 m. It follows then that the 6-m long pulse would contain:

 

 

 

Otro ejemplo, tomado de la tecnología actual, será útil en ayudar a nuestra comprensión de qué es la luz y cómo se comporta. Un instrumento electroóptico de años recientes es el buscador de rango laser (laser range finder - LRF). El LRF contiene una fuente de luz muy pura en la forma de un laser, un juego de ópticas de proyección incluyendo un obturador, un juego de ópticas de recepción, un detector, y un mecanismo de temporizado preciso. El LRF funciona generando un pulso energía laser, que es proyectado hacia un objetivo donde el mismo es reflejado nuevamente hacia el LRF, recolectado y proyectado por la óptica de recepción sobre el detector. El temporizador de precisión mide el tiempo requerido para que el pulso viaje hacia el objetivo y retorne. Con el conocimiento de la velocidad a la cual viaja la luz, es entonces un simple paso calcular la distancia al objetivo. Una configuración común del LRF utiliza un laser con una longitud de onda de 1,06 µm y una duración de pulso proyectado de 20 ns. A partir de esta información podemos generar una descripción realista del pulso incluyendo el tamaño y características.

Para generar el pulso el obturador del LRF debe ser abierto y luego cerrado de una manera precisa, con un tiempo de apertura total transcurrido de 20 X 10 -9 s. Sabemos que la luz viaja a una velocidad de 3 X 108 m/s, la figura siguiente ilustra el sistema tratado. Cuando el obturador ha sido abierto durante los 20 X 10-9 segundos, el inicio del pulso habrá viajado 20 X 10-9 s * 3 X 108 m/s = 6 m . El obturador entonces se cierra, y el resultado será un largo pulso de energía laser de 6 metros de largo, viajando hacia el objetivo a una velocidad de 3 X 108 m/s.

Podemos determinar otra característica significativa de éste pulso de energía laser. Hemos dicho que la energía emitida desde un laser tiene una longitud de onda de 1.06 µm, o 1,06 X 10-6 m. Se deduce entonces que el pulso de 6m de longitud contiene :

Fig. 4- A laser range finder generates a short pulse of energy which is used to determine the distance to a target. Shown above es a schematic representation of that pulse.  Un buscador de rango laser genera un pulso corto de energía que es usado para determinar la distancia a un objetivo. Se muestra arriba una representación esquemática de dicho pulso.

where λ = wavelength.

Returning to last figure, we can now visualize and describe the 20-ns pulse from the LRF as a beam of energy, with a wavelength of 1.06 µm, and a total length of 6 m. That pulse contains 5.66 X 106 cycles (wavelengths) of this laser energy, and the entire pulse is traveling through space at a velocity of 3 X 108 m/s.

Exercises such as this are most valuable in the sense that they serve to convert abstract concepts into real-world situations that we can more easily visualize and understand. With that understanding the optical engineer can obviously better generate designs implementing these concepts.

 

O sea: 5,66 X 106 λ/pulso

Donde λ = longitud de onda

Retornando a la última figura, podemos ahora visualizar y describir el pulso de 20-ns del LRF como un haz de energía, con una longitud de onda de 1,06 µm, y una longitud total de 6 metros. Ese pulso contiene 5,66 X 106 ciclos (longitudes de onda) de esta energía laser, y el pulso completo viaja a través del espacio a una velocidad de of 3 X 108 m/s.

Ejercicios como este son los mas valiosos en el sentido de que sirven para convertir conceptos abstractos en situaciones del mundo real que pueden ser mas fácilmente visibles y comprendidas. Con ese conocimiento el ingeniero óptico puede obviamente generar diseños implementando esos conceptos.

 

 

 

 

 

 

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Cables To Go 39102 Q-Series 2U 6-PANEL RACK-MOUNT FIBER OPTIC ENCLOSURE

$300.29  $230.99

Our rugged rack-mount enclosures can securely house 3 6 or 12 pre-terminated module or adapter panels. They re available in 1 2 and 4u configurations and feature front and rear doors for convenient access. The top panels can also be removed for additional access and are equipped with rear knockouts for horizontal cabling entrances. Guaranteed for life each enclosure is designed to be installed in racks or cabinets supporting 19 or 23 rails. The rack-mount ears can also be adjusted to 3 different lengths from front to rear providing even more flexibility. For additional savings 1 and 2U rack-mount panels are available. Like the enclosures they can accept 3 or 6 pre-terminated modules or adapter panels. Features: Rugged heavy duty steel construction. 1U 2U and 4U versions can accept 3 6 or 12 pre-terminated MTP modules or adapter panels. A single 4U-enclosure can support up to 288-connenction points with the Quad-LC Module making it a very high density solution. Front and rear access ... [Read more]

Store: UnbeatableSale.com

Brand: Cables To Go

Tripp Lite Fiber Optic Patch Cable 3.28ft 2 x SC 2 x SC Patch Cable Single-mode N356-01M
 

Tripp Lite Fiber Optic Patch Cable 3.28ft 2 x SC 2 x SC Patch Cable Single-mode N356-01M

$24.45  $19.64

Tripp Lites 1-meter single mode duplex fiber optic SC/SC patch cable is manufactured from 8.3/125 zipcord fiber. The cable has SC connectors on each end a PVC jacket and is FDDI and OFNR rated. Duplex single mode fiber is most commonly used in LAN applications. Core/Cladding Diameter: 9/125 m. Cable Length: 3.28. Connector on First End: 2 x SC. Connector on Second End: 2 x SC. Jacket: Plenum. Insertion loss testing performed on every connector (0.2db typical) and provided with cable. Beveled edge on ends of glass makes insertion of plug a breeze. Fiber made from glass (not a polymer). Color coded shrouds identify transmit and receive. [Read more]

Store: UnbeatableSale.com

Brand: Interex By Tripp-Lite

Cables To Go 39104 Q-Series 1U 3-PANEL RACK-MOUNT FIBER OPTIC PANEL
 

Cables To Go 39104 Q-Series 1U 3-PANEL RACK-MOUNT FIBER OPTIC PANEL

$42.89  $32.99

Our rugged rack-mount enclosures can securely house 3 6 or 12 pre-terminated module or adapter panels. They re available in 1 2 and 4u configurations and feature front and rear doors for convenient access. The top panels can also be removed for additional access and are equipped with rear knockouts for horizontal cabling entrances. Guaranteed for life each enclosure is designed to be installed in racks or cabinets supporting 19 or 23 rails. The rack-mount ears can also be adjusted to 3 different lengths from front to rear providing even more flexibility. For additional savings 1 and 2U rack-mount panels are available. Like the enclosures they can accept 3 or 6 pre-terminated modules or adapter panels. Features: Rugged heavy duty steel construction. 1U 2U and 4U versions can accept 3 6 or 12 pre-terminated MTP modules or adapter panels. A single 4U-enclosure can support up to 288-connenction points with the Quad-LC Module making it a very high density solution. Front and rear access ... [Read more]

Store: UnbeatableSale.com

Brand: Cables To Go

C2G 11000 FIBER CABLE - LC - MALE - LC - MALE - 1 M - FIBER OPTIC - AQUA
 

C2G 11000 FIBER CABLE - LC - MALE - LC - MALE - 1 M - FIBER OPTIC - AQUA

$48.88  $36.21

C2G FIBER CABLE - LC - MALE - LC - MALE - 1 M - FIBER OPTIC - AQUA FIBER CABLE - LC - MALE - LC - MALE - 1 M - FIBER OPTIC - AQUA Manufacturer: C2G UPC: 757120110002 [Read more]

Store: UnbeatableSale.com

Brand: C2G

SIIG CB-FE0711-S1 3M Multimode 62.5-125 Duplex Fiber Patch Cable LC-SC - Fiber Optic for Network Device - 3m - 1 Pack - 2 x LC Male Network - 2 x SC Male Network - Orange
 

SIIG CB-FE0711-S1 3M Multimode 62.5-125 Duplex Fiber Patch Cable LC-SC - Fiber Optic for Network Device - 3m - 1 Pack - 2 x LC Male Network - 2 x SC Male Network - Orange

$27.96  $20.71

SIIG 3M Multimode 62.5/125 Duplex Fiber Patch Cable LC/SC is designed to provide high-speed connection between fiber networking devices for long distance networks. It is 3 meters in length and features LC to SC connectors. Cable Type: Fiber Optic. Cable Characteristic: Patch Cable. Fiber Optic Mode: Multi-mode. Cable Length: 9.84. Connector on First End: 2 x LC Male Network. Connector on Second End: 2 x SC Male Network. Device Supported: Network Device. Color: Orange. Green Compliant: Yes. Green Compliance Certificate/Authority: RoHS. Country of Origin: Taiwan. [Read more]

Store: UnbeatableSale.com

Brand: SIIG

C2G 11002 FIBER CABLE - LC - MALE - LC - MALE - 3 M - FIBER OPTIC - AQUA
 

C2G 11002 FIBER CABLE - LC - MALE - LC - MALE - 3 M - FIBER OPTIC - AQUA

$89.69  $68.99

C2G FIBER CABLE - LC - MALE - LC - MALE - 3 M - FIBER OPTIC - AQUA FIBER CABLE - LC - MALE - LC - MALE - 3 M - FIBER OPTIC - AQUA Manufacturer: C2G UPC: 757120110026 [Read more]

Store: UnbeatableSale.com

Brand: C2G

CableWholesale LCLC-11107 Multimode Duplex Fiber Optic 62.5-125
 

CableWholesale LCLC-11107 Multimode Duplex Fiber Optic 62.5-125

$18.52  $13.72

Fiber Optic Cable LC / LC Multimode Duplex 62.5/125 7 meter (22.9 foot) [Read more]

Store: UnbeatableSale.com

Brand: Cable Wholesale

CableWholesale LCST-11105 Fiber Optic Cable LC ST Multimode Duplex 62.5-125 5 meter (16.5 foot)
 

CableWholesale LCST-11105 Fiber Optic Cable LC ST Multimode Duplex 62.5-125 5 meter (16.5 foot)

$16.40  $12.15

This 5 meter (~16 feet) fiber optic cable is terminated with a LC (Lucent Connector) connector on one end and a ST (Straight Tip/Bayonet Connector) connector on the other end. It is a multimode fiber (62.5 micron core) designed to transmit data across shorter distances at LAN speeds. The cord is duplex (two fibers) which means it permits synchronous communication between devices. The cladding diameter is 125 microns. (Not for Home Theater) End 1: LC Male Fiber Plug End 2: ST Male Fiber Plug Length: 5 meters Color: Orange [Read more]

Store: UnbeatableSale.com

Brand: Cable Wholesale

CableWholesale LCLC-11110-PL Multimode Duplex Fiber Optic 62.5-125
 

CableWholesale LCLC-11110-PL Multimode Duplex Fiber Optic 62.5-125

$28.53  $21.13

Plenum Fiber Optic Cable LC / LC Multimode Duplex 62.5/125 10 meter (33 foot) [Read more]

Store: UnbeatableSale.com

Brand: Cable Wholesale

Monoprice 4628 Fiber Optic Cable SC & SC Single Mode Duplex 2 Meter - Yellow
 

Monoprice 4628 Fiber Optic Cable SC & SC Single Mode Duplex 2 Meter - Yellow

$25.97  $19.24

Features 2 Meter its immunity to electronic interference and its greater speeds over longer distances; fiber optic cabling has become the conduit of choice for high speed network communications. Monoprice is proud to offer a full line of high-quality Single-mode and Multi-mode duplex cables using optical fibers made by Corning. This is an single-mode cable with a 9 μm core and 125 μm cladding diameter. The cable has a color-coded Dual SC connector on each end. The cable jacket is OFNR (Optical Fiber; Non-conductive; Riser) rated by UL; which means that it complies with fire safety and insurance requirements and is safe for use within the walls; and between the floors; of commercial class buildings. Color - Yellow [Read more]

Store: UnbeatableSale.com

Brand: Monoprice

CableWholesale STST-01205 Fiber Optic Cable ST ST Singlemode Duplex 9-125 5 meter (16.5 foot)
 

CableWholesale STST-01205 Fiber Optic Cable ST ST Singlemode Duplex 9-125 5 meter (16.5 foot)

$16.59  $12.29

This 5 meter (~16 feet) fiber optic cable is terminated with ST (Straight Tip/Bayonet Connector) connectors on both ends. It is a singlemode fiber (9 micron core) designed to transmit data across long distances at high speeds. The cord is duplex (two fibers) which means it permits synchronous communication between devices. The cladding diameter is 125 microns. (Not for Home Theater) End 1: ST Male Fiber Plug End 2: ST Male Fiber Plug Length: 5 meters Color: Yellow [Read more]

Store: UnbeatableSale.com

Brand: Cable Wholesale

CableWholesale MPMP-32010 Multimode Duplex Fiber Optic 50-125
 

CableWholesale MPMP-32010 Multimode Duplex Fiber Optic 50-125

$284.77  $210.94

Plenum Fiber Optic Cable MTP / MTP (MPO) Multimode Duplex 24 Strand 100 Gbps 50/125 10 meter (33 foot) [Read more]

Store: UnbeatableSale.com

Brand: Cable Wholesale

Monoprice 6411 10Gb Fiber Optic Cable ST & ST Multi Mode Duplex 2 Meter - Aqua
 

Monoprice 6411 10Gb Fiber Optic Cable ST & ST Multi Mode Duplex 2 Meter - Aqua

$14.73  $11.33

Features Duplex 2 Meter immunity to electronic interference and its greater speeds over longer distances; fiber optic cabling has become the conduit of choice for high speed network communications. Monoprice is proud to offer a full line of high-quality Single-mode and Multi-mode duplex cables using optical fibers made by Corning. This is an OM3 laser-optimized; multi-mode cable with a 50 μm core and 125 μm cladding diameter. The cable has a pair of color-coded ST connectors on each end and is ideal for use in 10 Gigabit Ethernet (GbE) networks. The cable jacket is OFNR (Optical Fiber; Non-conductive; Riser) rated by UL; which means that it complies with fire safety and insurance requirements and is safe for use within the walls; and between the floors; of commercial class buildings. Color - Aqua [Read more]

Store: UnbeatableSale.com

Brand: Monoprice

CableWholesale LCLC-11012 Multimode Duplex Fiber Optic 50-125
 

CableWholesale LCLC-11012 Multimode Duplex Fiber Optic 50-125

$22.38  $16.58

Fiber Optic Cable LC / LC Multimode Duplex 50/125 12 meter (39.3 foot) [Read more]

Store: UnbeatableSale.com

Brand: Cable Wholesale

CableWholesale LCLC-31015 Multimode Aqua 10 Gig Fiber Optic 50-125
 

CableWholesale LCLC-31015 Multimode Aqua 10 Gig Fiber Optic 50-125

$27.97  $20.72

10 Gigabit Aqua Fiber Optic Cable LC / LC Multimode Duplex 50/125 15 meter (49.2 foot) [Read more]

Store: UnbeatableSale.com

Brand: Cable Wholesale

CableWholesale LCLC-31020 Multimode Aqua 10 Gig Fiber Optic 50-125
 

CableWholesale LCLC-31020 Multimode Aqua 10 Gig Fiber Optic 50-125

$36.67  $27.16

10 Gigabit Aqua Fiber Optic Cable LC / LC Multimode Duplex 50/125 20 meter (65.6 foot) [Read more]

Store: UnbeatableSale.com

Brand: Cable Wholesale

TRIPP LITE N816-05M PATCH CABLE - LC-MULTIMODE - MALE - SC-MULTIMODE - MALE - FIBER OPTIC - 5 M - AQ
 

TRIPP LITE N816-05M PATCH CABLE - LC-MULTIMODE - MALE - SC-MULTIMODE - MALE - FIBER OPTIC - 5 M - AQ

$26.04  $21.24

TRIPP LITE PATCH CABLE - LC-MULTIMODE - MALE - SC-MULTIMODE - MALE - FIBER OPTIC - 5 M - AQ PATCH CABLE - LC-MULTIMODE - MALE - SC-MULTIMODE - MALE - FIBER OPTIC - 5 M - AQ UA BLUE Manufacturer: TRIPP LITE UPC: 037332134356 [Read more]

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Brand: Interex By Tripp-Lite

CableWholesale 10F2-006NH Singlemode Duplex Fiber Optic 9-125
 

CableWholesale 10F2-006NH Singlemode Duplex Fiber Optic 9-125

$240.16  $184.74

6 Fiber Indoor Distribution Fiber Optic Cable Singlemode 9/125 Yellow Riser Rated Spool 1000 foot [Read more]

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Brand: Cable Wholesale

CableWholesale SCSC-01203 Fiber Optic Cable SC SC Singlemode Duplex 9-125 3 meter (10 foot)
 

CableWholesale SCSC-01203 Fiber Optic Cable SC SC Singlemode Duplex 9-125 3 meter (10 foot)

$15.90  $11.78

This 3 meter (~10 feet) fiber optic cable is terminated with SC (Subscriber Connector) connectors on both ends. It is a singlemode fiber (9 micron core) designed to transmit data across long distances at high speeds. The cord is duplex (two fibers) which means it permits synchronous communication between devices. The cladding diameter is 125 microns. (Not for Home Theater) End 1: SC Male Fiber Plug End 2: SC Male Fiber Plug Length: 3 meters Color: Yellow [Read more]

Store: UnbeatableSale.com

Brand: Cable Wholesale

CableWholesale SCSC-11130 Multimode Duplex Fiber Optic 62.5-125
 

CableWholesale SCSC-11130 Multimode Duplex Fiber Optic 62.5-125

$35.02  $25.94

Fiber Optic Cable SC / SC Multimode Duplex 62.5/125 30 meter (98.4 foot) [Read more]

Store: UnbeatableSale.com

Brand: Cable Wholesale

Monoprice 6385 10Gb Fiber Optic Cable LC LC Multi Mode Duplex - Aqua
 

Monoprice 6385 10Gb Fiber Optic Cable LC LC Multi Mode Duplex - Aqua

$25.21  $19.39

Features Its immunity to electronic interference and its greater speeds over longer distances Fiber optic cabling has become the conduit of choice for high speed network communications. offers a full line of high-quality Single-mode and Multi-mode duplex cables using optical fibers made by Corning. This is an OM3 "Aqua" laser-optimized multi-mode cable with a 50 μm core and 125 μm cladding diameter. The cable has color-coded Dual LC connectors on each end and is ideal for use in 10 Gigabit Ethernet (GbE) networks. The cable jacket is OFNR (Optical Fiber Non-conductive Riser) rated by UL Which means that it complies with fire safety and insurance requirements and is safe for use within the walls and between the floors of commercial class buildings. Color - Aqua [Read more]

Store: UnbeatableSale.com

Brand: Monoprice

Monoprice 6394 10GB Fiber Optic Multi Mode Duplex Cable LC-SC 10 m. - Aqua
 

Monoprice 6394 10GB Fiber Optic Multi Mode Duplex Cable LC-SC 10 m. - Aqua

$31.76  $24.43

Because of its immunity to electronic interference and its greater speeds over longer distances; fiber optic cabling has become the conduit of choice for high speed network communications. Monoprice is proud to offer a full line of high-quality Single-mode and Multi-mode duplex cables using optical fibers made by Corning. This is an OM3; Aqua; laser-optimized; multi-mode cable with a 50 µm core and 125 m cladding diameter. The cable has a color-coded Dual LC connector on one end and a Dual SC connector on the other end. It is ideal for use in 10 Gigabit Ethernet (GbE) networks. The cable jacket is OFNR (Optical Fiber; Non-conductive; Riser) rated by UL; which means that it complies with fire safety and insurance requirements and is safe for use within the walls; and between the floors; of commercial class buildings. Color - Aqua Length - 10 m. [Read more]

Store: UnbeatableSale.com

Brand: Monoprice

Monoprice 2602 Fiber Optic Cable ST & ST OM1 Multi Mode Duplex 2 meter - Orange
 

Monoprice 2602 Fiber Optic Cable ST & ST OM1 Multi Mode Duplex 2 meter - Orange

$19.89  $14.73

Features Because of its immunity to electronic interference and its greater speeds over longer distances; fiber optic cabling has become the conduit of choice for high speed network communications. Monoprice is proud to offer a full line of high-quality Single-mode and Multi-mode duplex cables using optical fibers made by Corning. This is an OM1 multi-mode cable with a 62.5 μm core and 125 μm cladding diameter. The cable has a pair of color-coded ST connectors on each end. The cable jacket is OFNR (Optical Fiber; Non-conductive; Riser) rated by UL; which means that it complies with fire safety and insurance requirements and is safe for use within the walls; and between the floors; of commercial class buildings. Color - Orange [Read more]

Store: UnbeatableSale.com

Brand: Monoprice

Monoprice 2606 Fiber Optic Cable ST & SC OM1 Multi Mode Duplex 1 Meter - Orange
 

Monoprice 2606 Fiber Optic Cable ST & SC OM1 Multi Mode Duplex 1 Meter - Orange

$24.10  $17.85

Features 1 meter its immunity to electronic interference and its greater speeds over longer distances; fiber optic cabling has become the conduit of choice for high speed network communications. Monoprice is proud to offer a full line of high-quality Single-mode and Multi-mode duplex cables using optical fibers made by Corning. This is an OM1 multi-mode cable with a 62.5 μm core and 125 μm cladding diameter. The cable has a pair of color-coded ST connectors on one end and a Dual SC connector on the other end. The cable jacket is OFNR (Optical Fiber; Non-conductive; Riser) rated by UL; which means that it complies with fire safety and insurance requirements and is safe for use within the walls; and between the floors; of commercial class buildings. Color - Orange [Read more]

Store: UnbeatableSale.com

Brand: Monoprice

CableWholesale SCSC-01202 Fiber Optic Cable SC SC Singlemode Duplex 9-125 2 meter (6.6 foot)
 

CableWholesale SCSC-01202 Fiber Optic Cable SC SC Singlemode Duplex 9-125 2 meter (6.6 foot)

$19.28  $14.83

This 2 meter (~6 feet) fiber optic cable is terminated with SC (Subscriber Connector) connectors on both ends. It is a singlemode fiber (9 micron core) designed to transmit data across long distances at high speeds. The cord is duplex (two fibers) which means it permits synchronous communication between devices. The cladding diameter is 125 microns. (Not for Home Theater) End 1: SC Male Fiber Plug End 2: SC Male Fiber Plug Length: 2 meters Color: Yellow [Read more]

Store: UnbeatableSale.com

Brand: Cable Wholesale

CableWholesale LCLC-31009 Multimode Aqua 10 Gig Fiber Optic 50-125
 

CableWholesale LCLC-31009 Multimode Aqua 10 Gig Fiber Optic 50-125

$26.00  $19.26

10 Gigabit Aqua Fiber Optic Cable LC / LC Multimode Duplex 50/125 9 meter (29.5 foot) [Read more]

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Brand: Cable Wholesale

CableWholesale LCLC-31010-PL Multimode Aqua 10 Gig Fiber Optic 50-125
 

CableWholesale LCLC-31010-PL Multimode Aqua 10 Gig Fiber Optic 50-125

$17.29  $12.81

Plenum 10 Gigabit Aqua Fiber Optic Cable LC / LC Multimode Duplex 50/125 10 meter (33 foot) [Read more]

Store: UnbeatableSale.com

Brand: Cable Wholesale

CableWholesale SCSC-01230 Singlemode Duplex Fiber Optic 9-125
 

CableWholesale SCSC-01230 Singlemode Duplex Fiber Optic 9-125

$33.13  $24.54

Fiber Optic Cable SC / SC Singlemode Duplex 9/125 30 meter (98.4ft) [Read more]

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Brand: Cable Wholesale

CableWholesale LCLC-11108 Multimode Duplex Fiber Optic 62.5-125
 

CableWholesale LCLC-11108 Multimode Duplex Fiber Optic 62.5-125

$26.58  $19.69

Fiber Optic Cable LC / LC Multimode Duplex 62.5/125 8 meter (26.2 foot) [Read more]

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Brand: Cable Wholesale

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