Variable Optical Attenuators (VOAs) are optimized for DWDM network applications. This offers stable performance over wide temperature and wavelength ranges. In addition, they provide low insertion loss and high resolution and repeatability. Custom design for specific customer applications are available. It is ideal for managing optical power in metro and long haul DWDM transport applications.

Features & Applications
Ordering Codes


-Bench top Variable Optical Attenuator-



High attenuation accuracy
Low insertion loss
Large attenuation range
Compact size
High Stability
Easy operation
CATV systems
DWDM networks
Optical add/drop multiplexing
Optical communication system testing




Performance Unit
Operating Wavelength 1280 to 1580 nm
Calibrated Wavelength 1310, 1550, 1310/1550 nm
Attenuation Range 0 to 60 dB
Attenuation Deviation Accuracy ±0.5 dB
Resolution 0.01 (Typical), 0.02 (Max) dB
Residual Attenuation Max 1.5 dB
Return Loss Min 45 dB
Switching Repeatability ±0.1 dB
Max. Allowable Input Level 300 mW
Polarization Dependent Loss 0.05 (Typical), 0.15 (Max) dB
Power Supply 220V AC  
Operating Temperature 0 to 50 ºC
Storage Temperature -10 to +60 ºC
Dimensions 210 x 206 x 80 mm³
User Interface  
Display LCD
Display Parameters

Optical attenuation (in dB), measurement wavelength (in nm)

Connectors FC/APC, others on request

For customized specification, please contact us at


Ordering Codes

OLVOA - B - [Calibrated Wavelength] - FA

Calibrated Wavelength Code
1310 nm 131
1550 nm 155
1310/1550 nm 135

* Opto-Link Corporation Ltd reserves the right to make changes to the products described herein without notice.


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