Fiber Tip MEMS Variable Fiber Optical Attenuator

(for integration with transceivers, lasers, sensors)
  • Compact
  • Low Cost
  • High Reliability
  • Low IL, PDL, WDL and TDL
  • Low Power Consumption


Click 'Spec Sheet' for available configurations/part#


The receptacle MEMS VOA is based on a micro-electro-mechanical mechanism featuring simple construction, high reliability, and excellent optical performance. It is available in either normally-open or normally-closed configurations. The receptacle MEMS VOA is driven by an electrical voltage, and the attenuation can be continuously adjusted.

It is designed for TOSA or ROSA. One end is ready for the connector to plug in, and the other end is ready for mounting laser diode or photodetector.


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MM Series VOA Min Typical Max Unit
Central Wavelength   1310±50 / 1480±50  / 1550±50 nm
Insertion Loss[1] 0.5 0.8 dB
Attenuation Range 25 30 dB
Polarization Dependent Loss @10dB 0.15 0.3 dB
@20dB 0.25 0.5 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
Polarization Mode Dispersion 0.01 0.05 ps
Return Loss 45 dB
Repeatability 0.1 dB
Response Time 3 6 ms
Driving Voltage at 10 dB attenuation 3 V
Driving Voltage at 30 dB attenuation 5 5.2[3] V
Device Resistance 100 ohm
Power Consumption[4] 80 130 mW
Optical Power Handling 300 500 mW
Operating Temperature -5 75 oC
Storage Temperature -40 85 oC
Reliability           Telcordia 1209 and 1221
Fiber Type Corning SMF28 or equivalent
Package Dimension See drawing below mm
1.    Excluding connectors
2.   Reference to room temperature
3.   Over this value will damage the device
4.   For full dynamic range.