Variable Optical Attenuators (VOAs)

VOAs are designed to control the optical power in a fiber optics network. Casix VOA family is based on micro-electro-mechanical system (MEMS) technology. Highly repeatable optical attenuation is achieved through an electrostatic rotatable MEMS mirror changing light coupling between input/output fiber (ESVOA) , or a thermally-actuated MEMS shutter moving in/out of the optical path (Matt VOA).

DUV DUV

Feature

Application

Power management in optical network, ROADM power balancing, dynamic gain control in DWDM/CWDM networks, power balance between optical amplifier stages.

Capabilities

ESVOSA

Parameter Unit Value
Operating Wavelength nm 1525-1575
Optical insertion dB 0.7
Full Range Attenuation dB 30
WDL @12dB attenuation dB 0.35
WDL @20dB attenuation dB 0.8
PDL @20dB dB 0.3
TDL @12dB attenuation dB 1.1
TDL @20dB insertion loss dB 1.4
RL (both ports) dB 45
Attenuation repeatability dB 0.2
Tuning Speed (over full range)/Attenuation tuning rise/fall time ms 2
Driving voltage for 30dB attenuation V 5.9
Dimensions mm Φ5.6x15.5

 

Matt VOA

Parameter Unit Value
Operating Wavelength nm 1525-1575
Optical insertion dB 0.8
Full Range Attenuation dB 27
WDL @ 0 ~ 20dB attenuation dB 0.3
WDL @ 20 ~ 27dB attenuation dB 0.35
PDL @ 0 ~ 10dB dB 0.1
PDL @ 0 ~ 20dB dB 0.2
PDL @ 0 ~ 27dB dB 0.3
TDL @ 0 ~ 10 dB attenuation dB 0.5
TDL @ 0 ~ 20 dB attenuation dB 0.7
TDL @ 0 ~ 27 dB attenuation dB 1.2
RL (both ports) dB 50
Repeatability dB 0.1
Response Speed ms 20
Driving voltage for 30dB attenuation V 6
Dimensions mm Standard: W7.7x H5.8 x L22;
Mini: W7.7 x H5.8 x L17

 

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