Variable Optical Attenuator Programmable Array System

(net-ready, precision feedback control, high speed, SM/MM, broadband)
  • Very Low Loss
  • Highly Repeatable
  • Power Tap Control
  • Broadband
  • High Resolution
  • Large Attenuation



The VOA Array Rack System is highly versatile that is cable of meeting performance requirements for all application scenarios.  The system intergrades power minoring taps to provide high precision output laser power control. By using three types of Photonwares VOAs of standard MEMS, 100ns NanoSpeedTM, and Fiber-FiberTM Mini-motor, it uniquely offers high speed laser power stabilization function that eliminates fluctuations and surge as well as latching function that preserves the output level when electrical power is removed. Moreover, it has ultra-broadband covering from 200 to 2500nm, ultra-low insertion loss of less than 0.2dB, ultra-high setting precision, high optical power handling up to 1W, and latching function. It is available with all types of fibers with a 125 micron outer diameter. The system is a modular plug-in design that accommodates any number of channels in a single system with various corresponding rack heights. 1U is the minimum height (shown in photo below). The same system can further integrate amplifiers and protection switches. The standard control interfaces include Ethernet with documented CLI and Instrumentation Standard Based (SCPI, TL1). USB and RS232 are available options. GUI is typically included.


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Precision Motor Series VOA Min Typical Max Unit
 Operation Wavelength                                              300                        2500 nm
 Insertion Loss 0.3 0.4[1] dB
1 1.5[2] dB
 Polarization Dependent Loss 0.15 0.5 dB
 Wavelength Dependence Loss 0.1 0.2 dB
 Attenuation Range 30 65[3] dB
 Attenuation Setting Repeatability 0.05 dB
 Extinction Ratio (PM version only) 18 23 25 dB
 Polarization Mode Dispersion (SM version only) 0.01 0.05 ps
 Return Loss 45 dB
 Response Time 100 ms
 Optical Power handling 500 1000[4] mW
 Operating Temperature -5 75 oC
 Storage Temperature -40 85 oC
Electrical Power Input 100 230 VAC



[1] Only with mini-motor VOA without tap

[2] With tap an connectors

[3] 65dB only available with mini-motor VOA

[4] 1W only available with mini-motor VOA