Electrically Variable Optical Attenuators

Electrically Variable Optical
Attenuators
EVOA Series
Features
• Operates over C or L band
• 5 VDC operating voltage
• Low Insertion loss and PDL
• Latching capability
• PCB mountable
Applications
• Pre-emphasis attenuation
• Detector input power control
• In-line power equalization
• Gain-tilt control in optical
amplifiers
• On/Off switch
• Instrumentation, testing and
measurement
Electrically Variable Optical Attenuators
Oplink’s electrically variable optical attenuator
(EVOA) is a high performance optomechanical device. It features a large
dynamic attenuation range of >30dB and
an excellent optical performance over Cor L-band. Its latching operation retains
recent attenuation setting upon removal of drive
voltage. Applications include pre-emphasis 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 provides customized design and packaging to meet customer-specific requirements for a variety of applications. Oplink also offers expert integration of components
and modular assemblies into high-performance subsystems for equipment manufacturers
worldwide.
Performance Specifications
Parameter
Min
Operating Wavelength Range
Insertion Loss1
Attenuation Range
Temperature Dependent of Attenuation2
0 to 15 dB
Wavelength Dependence of
Attenuation
> 15 dB
Polarization Dependent of
Attenuation
Oplink
Fiber Optic
Product Lines
Amplifier Components
Amplifier Modules
DW DMs
Switching/Routing/
Monitoring/ Conditioning
Transmission
RGB Laser Modules
Oplink Communications, Inc.
PMD
Return Loss1
Resolution
Back Lash
Response Speed 3
Optical Power
Operating Temperature
StorageTemperature
Fiber Type
POT Resistance
Dimension
NOTES:
1. Excluding connectors.
2. Relative to 23 °C.
3. At 3 dB attenuation change.
Typical
Max
0
0.6
30
0.15
0.2
0.3
0 to15dB
> 15 dB
dB
dB
dB
dB
0.15
0.2
dB
0.1
ps
50
0
-40
Unit
nm
1525 ~ 1570 or 1570 ~ 1610
0.1
0.2
0.1
50
70
85
SMF-28
9
10
11
50.0 (L) x 25.0 (W) x 12.0 (H)
dB
dB
dB
sec
mW
°C
°C
KΩ
mm
Electrically Variable Optical Attenuators
Mechanical Footprint:
Dimension (unit: mm)
3.6
Electrical Connector Configuration
Pin#
Pin1
Pin2
Pin3
Pin4
Function
Motor
Motor
Motor
Motor
Phase
Phase
Phase
Phase
Pin5
Pot
Wiper
Pin6
Pot
+V
Pin7
Pot
GND
Pin8
NC
Ordering Information
0
EVOA
Operating Wavelength
C band=1550
L band=1600
0
0
1
PackageType
P1 =1
Fiber Length
1.0 meter=1
1.5 meters=5
2.0 meters=2
FiberType
SMF-28 250µm=1
SMF-28 with 900µm loose tube=2
Connector Type
None = 1
FC/PC = 2
FC/SPC = 3
FC/APC = 4
SC/PC = 5
SC/SPC = 6
SC/APC = 7
ST = 8
LC = 9
MU = A
46335 Landing Parkway Fremont, CA 94538-6407 Tel: (510) 933-7200 Fax: (510) 933-7300Email: Sales@Oplink.com