etMEMS™ Variable Optical Attenuator Integrated With Input Tap

The etMEMSTM Series VOA with input tap is based on a micro-electro-mechanical mechanism featuring integrated compact design, simple construction, easy direct drive, excellent optical performance of ultra low insertion loss, low PDL, and broad wavelength operation range. The etMEMSTM Series VOA is compliant with the Telcordia 1209 and 1221 reliability standards. The etMEMSTM Series VOA is available in either normally-open or normally-closed configurations and with an integrated input tap option. The VOA is driven with an electrical current at low voltage or a converted voltage, and the attenuation can be continuously adjusted with the applied current.


  • VOA + Tap
  • Compact Size
  • Low Cost
  • High Reliability
  • Low IL, PDL, WDL and TDL
  • Direct Low Voltage Drive


  • Power Control
  • Power Regulation
  • Channel Balance
  • Instrumentation


etMEMSTM  TVOAMinTypicalMaxUnit
 Wavelength                                    1260~1360 and/or 1510~1620nm
 Insertion Loss10.30.50.8dB
 Polarization Dependent Loss20.150.4dB
 Wavelength Dependence Loss3,40.2dB
 Temperature Dependence Loss30.050.2dB
 Attenuation Range2535dB
 Attenuation ResolutionContinuous
 Polarization Mode Dispersion20.0050.010.05ps
 Return Loss45dB
 Response Time5ms
 Tap Response @ 1550nm121540mA/W
 Wavelength Dependence Response0.0100.0200.025dB/nm
 Polarization Dependence Response20.020.100.25dB
 Temperature Dependence Response0.01dB/°C
 Dark Current at 5V bias @ 23°C1nA
 Dark Current at 5V bias @ 70°C3070nA
 3dB Bandwidth (cutoff frequency)10MHz
 Power Consumption30100mW
 Optical Power300500mW
 Operating Temperature-575oC
 Storage Temperature-4085oC
ReliabilityTelcordia 1209 and 1221
Fiber Type               Corning SMF28
Package Dimension5F6.1 X 35.2mm



  1. Without connector and in room temperature
  2. At attenuation equal or less than 20dB
  3. At 0dB attenuation and in whole temperature range
  4. Within 30nm Bandwidth
  5. Length can be shorter (minimum=25mm)
P/N: N/A