EVOA155000021H Datasheet, PDF (1/2 Pages) OPLINK Communications Inc. – Electronically Variable Optical Attenuators

Electronically Variable Optical
Attenuators
EVOA Series
Product Description
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.
Performance Specificationns
Parameter
Min
Typical
Max
Operating wavelength range
1525 ~ 1570 or 1570 ~1610
Insertion Loss ^[1]
1.0
Attenuation range
0
30
Temperature dependence of attenuation ^[2]
0.15
Wavelength depen-
0~15dB Attenuation
0.2
dence of attenuation 15~30dB attenuation
0.3
Polarization depen-
0 to15 dB
0.15
dence of attenuation ^{> 15 dB}
0.2
PMD
0.1
Return Loss ^[1]
40
Resolution
0.15
Repeatability
0.2
Back lash
0.3
Response speed ^[3]
0.2
Optical power
100
Operating Temperature
-5 to +70
Storage Temperature
-40 to +85
Fiber type
SMF-28
POT resistance
9
10
11
Package Dimensions
Notes:
1) Excluding connectors.
2) Relative to 23°C.
P2: 50.0 (L) ×25.0 (W) × 12.0 (H
P3: 45.0 (L) ×18.0 (W) × 12.0 (H)
3) At 3 dB attenuation change.
Unit
nm
dB
dB
dB
dB
dB
ps
dB
dB
dB
dB
sec
mW
°C
°C
KΩ
mm
Features
 Operates over C or L Band
 Low Insertion Loss and PDL
 Latching Capability
 PCB Mountable
Applications
 Pre-emphasis Attenuation
 Detector Input Power Control
 In-line Power Equalization
 Gain Control in Optical Amplifiers
 On/Off Switch
 Instrumentation, Testing and
Measurement
R09.20090302