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SC / APC Variable Fiber Optic Attenuator For Fiber Optic Telecom Networks

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SC / APC Variable Fiber Optic Attenuator For Fiber Optic Telecom Networks

Brand Name : FOCABLE
Model Number : SC/APC Variable Fiber Optic Attenuator
Certification : RoHS Compliant, ISO Certificate
Place of Origin : China
Packaging Details : 1PCS/PE Bag
Attenuation : 0dB to 25dB
Connector : FC, SC, ST, LC, MU
Type : Male to Female, Female to Female
Mode : Singlemode, Multimode
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SC / APC Variable Fiber Optic Attenuator For Fiber Optic Telecom Networks

Variable Adapter Type Optical Attenuator utilizes the air gap between the two connectors to realize optical attenuation. It has a structure similar to an Fiber adapter. However, the air gap can be continuously adjusted and fixed manually. Variable adapter type attenuator induces a variable optical attenuation from 0.5dB to 30dB. This component can be used in applications where optical attenuation needs to be frequently adjusted.

The Variable adapter type attenuator has included tool provides ability to increase attenuation level to desired dB. Their attenuation range is 0dB to 20dB depending on light source.

FOC COMMUNICATION CO., LTD provides a wide range of single mode and multimode variable adapter type optical attenuator. They have low return loss and works at both 1310nm and 1550nm wavelength range. FC Fiber connector types with PC or APC polish are available.


Precision control of attenuation range
Wide attenuation range

Low back reflection and Low PDL

Precision ceramic ferrule

Plastic or metal housing material

Inline design is easy to use (plugs between existing fiber jumper & equipment)

Portable, Easy installation, Readily panel mountable

High Quality Return loss 60db or Greater

Dual wavelength (1310nm/1550nm)

Attenuators marked with attenuation level

FC, SC optional
100% factory test
Fixed type, male to female type, in-line type, variable type
UPC, APC available

Fiber optical telecommunication system
Fiber optical CATV
Fiber optical sensor
Testing equipment


Optical Performance

M-F Plug Type/ In line Type

F-F Adaptor Type

Operating Wavelength

SM 1260-1600nm MM 1260-1320nm

Testing Wavelength

SM: 1310nm / 1550nm


MM: 850nm / 1300nm

Attenuation Accuracy

1-9 dB 0.5dB
10-30dB 10%of Attenuation Value

Attenuation Range

1-10dB(1dB step), 15, 20, 25, 30dB

Return Loss

≥45 dB (PC)


≥50 dB (UPC)

≥ 60 dB (APC)

Input Power (Max.)



<0.20 dB Typical, 1000 matings

Operating Temp.

- 20 ~ +75°C

Storage Temp.

-40 ~ +85°C

Fiber Optic Attenuator, Optical Fiber Attenuator, Fiber Attenuators

Product Tags:

variable optical attenuator


multimode attenuator

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