Product Description

Features

Applications

Notes:

1) Excluding connectors.

2) Relative to 23°C.

3) At 3 dB attenuation change.

Parameter

Min

Typical

Max

Unit

Operating wavelength range

1525 ~ 1570 or 1570 ~1610

nm

1.0

dB

Attenuation range

0

30

dB

0.15

dB

Wavelength depen-

dence of attenuation

0~15dB Attenuation

15~30dB attenuation

0.2

0.3

dB

Polarization depen-

dence of attenuation

0 to15 dB

> 15 dB

0.15

0.2

dB

PMD

0.1

ps

40

dB

Resolution

0.15

dB

Repeatability

0.2

dB

Back lash

0.3

dB

0.2

sec

Optical power

100

mW

Operating Temperature

-5 to +70

°C

Storage Temperature

-40 to +85

°C

Fiber type

SMF-28

POT resistance

9

10

11

KΩ

Package Dimensions

P2: 50.0 (L) ×25.0 (W) × 12.0 (H

P3: 45.0 (L) ×18.0 (W) × 12.0 (H)

mm

R09.20090302

Electronically Variable Optical

Attenuators

EVOA Series

Oplink’s electronically variable optical attenuator (EVOA) is a high performance

opto-mechanical device. EVOA operates by moving an obstructing element into

the optical beam and the position of the obstructing element can be adjusted by

an integrated, electronically controlled step motor, resulting in fine tuning of at-

tenuation.

Oplink’s EVOA features a large dynamic attenuation range of >30dB and an excel-

lent optical performance over C- or L-band. Its latching operation retains recent

attenuation setting upon removal of drive voltage. Applications include pre-em-

phasis attenuation, detector saturation control, in-line power equalization and

amplifier power control applications.Also, it can be used to extend the dynamic

range of optical measurement instruments.

Oplink’s EVOA is designed to withstand the diverse environmental conditions and

compliance to the Telcordia standard GR-1221.

Oplink can provide customized designs to meet specialized feature applications.

Also, Oplink offers modular assemblies that integrate other components to form

a full function module or subsystem.



Operates over C or L Band



Low Insertion Loss and PDL



Latching Capability



PCB Mountable



Pre-emphasis Attenuation



Detector Input Power Control



In-line Power Equalization



Gain Control in Optical Amplifiers



On/Off Switch



Instrumentation, Testing and

Measurement