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Variable Optical Attenuator

Variable Optical Attenuator

This product using the MEMS chip with a movable mirror on the silicon. The mirror attenuates the laser light power by  coupling the input beam onto the output fiber. The applied voltage to the device controls the mirror tilt angle, thus the  desired attenuation amount.

Features

· Low insertion loss

· Low polarization dependent loss

· Miniature design

· Low power consumption

· High shock & vibration immunity

· Telcordia 1209 & 1221 compliant


Applications

· Channel on/off switch

· Channel equalization - Receiver protection

· Power equalization in OADM/ROADM

· Power equalization in VMUX

· EDFA GAIN-TILT control

Specifications

ParameterUnitSpecifiction

Configuration


Bright

Dark

Wavelength Range

nm

C band 1525 - 1570

L band 1570 - 1610

Attenuation Range

dB

25/40

25/40

Repeatability

dB

0.1

0.1

Atteruation Slop

dB/ V

20

20

Insertion Loss

dB

1

1

Return Loss

dB

45

45

 

Polarization Dependent Loss

0dB

0.2

0.2

0dB ~ 10dB

0.4

0.4

10dB ~ 20dB

0.8

0.8

Flat-ness

Broad Application

Band

0dB

0.2

0.2

0-10dB

1.0

1.0

10-20dB

2.0

2.0

Narrow Application

0dB

0.25

0.25

0-10dB

0.5

0.5

10-20dB

0.5

0.5

Wear-out

Cycle

10

10

Response Time

ms

5

5

Total Optical Power

mW

500

500

Dimension

mm

16×Φ5.4 (L×D)

Fiber Type


Corning SMF-28(9/125µm)

Fiber Marking


Input port: Red / Output port: Clear

Operating Temperature

°C

-5~70

Storage Temperature

°C

-40~85

Power Consumption

mW

10