MEMS Ultra Mini Variable Optical Attenuator

  • Compact
  • Low Cost
  • High Reliability
  • Low IL, PDL, WDL and TDL
  • Low Power Consumption



The etMEMS Series VOA is based on a patented micro-electro-mechanical mechanism featuring ultra-compact design, simple construction, easy direct drive, and excellent optical performance. The etMEMS series VOA is compliant with the Telcordia 1209 and 1221 high reliability standards.  The electrical connection is a flexible PCB with two holes at the end to mate with two pins on the board.   Temperature compensation resistor can also be mounted to the device.

The etMEMS series VOA is available in either normally-open or normally-closed configurations and with an integrated tap option. The VOA is driven by applying an electrical voltage.


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SM series VOA   Min Typical Max Unit
  Wavelength 1260 1620 nm
  Band Width +/-50 nm
  Insertion Loss [1] 0.5 1 dB
  Wavelength Dependent Loss @10dB 0.2 0.4 dB
@20dB 0.4 0.7 dB
Temperature Dependent Loss [2] @10dB 0.4 0.7 dB
@20dB 0.8 1.2 dB
Attenuation Resolution Continuous dB
Return Loss 45 dB
Response Time 3 6 ms
Power Handling 300 500 mW
Driving Voltage [3] 5 6 VDC
Power Consumption [3] 80 120 mW  
Reliability Telcordia 1209 and 1221  
Operating Temperature -5 ~ 75 oC
Storage Temperature -40 ~ 85 oC
Fiber Type SMF-28
Package Dimension See drawing below mm


[1]. Excluding connectors

[2]. Reference to room temperature

[3]. For full dynamic range, other drive voltage available