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Attenuators
PM MEMS Attenuator
DiCon’s PM MEMS Attenuator is based on a micro-electro-
mechanical system (MEMS) chip. The MEMS chip consists of an
electrically movable mirror on a silicon support. A voltage applied
to the MEMS chip causes the mirror to rotate, which changes the
coupling of light between the input and output fibers of the
MEMS Attenuator.
Cylindrical Package
Features
•
•
•
•
•
Small attenuator package
High extinction ratio
Qualified to GR-1221
Available in opaque or transparent versions
Available in both cylindrical and 14-pin DIP packages
Applications
MEMS Attenuators are used for distributed power equalization within
OADMs, MUX/DMUXes, Band Equalizers, Channel Equalizers, Optical
Cross-Connects, Line Cards and Transponders. Polarization Maintaining
Attenuators can also be used for power adjustment in polarization
sensitive devices such as modulators.
U.S. patented. Specifications subject to change. Copyright ©2004 DiCon Fiberoptics, Inc. All rights reserved.
Optical Specifications
1,2
Excess loss
Broad band
Application
Narrow band
Application
3
Attenuation slope
Extinction ratio
Back-reflection
Optical power
Response time
Repeatability
Wear-out
Fiber type
Operating temperature
Storage temperature
0.8 dB max.
0 to 15 dB
15 to 20 dB
0 to 20 dB
20 dB/V max.
18 dB min.
-50 dB max.
500 mW max.
2 ms max.
0.1 dB max.
1 x 10 cycles min.
Panda 400 or equivalent
-5
0
C to +70
0
C
-40
0
C to +85
0
C
9
Ordering Information
MT -
-
-
-
-
-
-
4B
-
-
Housing Type
C
D
T
O
13
15
16
20
X
S
F
PMF
PMS
PMN
Cylindrical
14-Pin DIP
Transparent
1
Opaque
2
1280 - 1330 nm
1528 - 1563 nm
1570 - 1610 nm
20 dB min.
Specify X dB min. (X <= 40)
Slow ripple (broad band)
Fast ripple (narrow band)
Fast axis
Slow axis
No connector
0.4 dB max.
0.7 dB max.
0.2 dB max.
Flatness
Attenuator Type
Operating Wavelength Range
Attenuator Range
Ripple Type
Connector Key Orientation
1. All specifications referenced without connectors.
2. At room temperature.
3. Maximum change of each 2 nm segment within the operating range.
Connector Type
Electrical Specifications
Actuation type
DC drive voltage
Voltage damage threshold
Resistance
Power consumption
Non-latching
0 - 5 VDC (6.5 V for opaque)
10 VDC max.
2 MΩ min.
20 uWatt max.
FC
FC/APC
X
N
1
X
FC/SPC
FC/APC
specify connector type
3
None
1 meter
Specify X meters
Pigtail Length
1. Minimum insertion loss at 0 V.
2. Minimum insertion loss at 6.5 V (high isolation at 0 V).
3. Connector Types: FC/UPC, SC, SC/APC, SC/UPC, LC, LC/UPC, MU/UPC
Housing Dimensions
Cylindrical Package
3.00
27.5
13.5
1.0
Optical Performance
Transparent
0
Attenuation (dB)
Attenuation (dB)
10
20
30
40
50
0
1
2
3
4
5
Control Voltage (V)
6
7
0
10
20
MEMS-VOA
Ø2.5
Ø5.56
Opaque
Ø5.56
2 (CNTL)
3 (GND)
14-pin DIP Package
ø
5.50
9.50
20.83
12.70
30
7.50
40
50
0
1
2
3
4
5
Control Voltage (V)
6
7
4.07
4.84
2.54
7.62
Units: mm
ø.
45
Pin Assignment
1 GND 8 NC
2 CNTL 9 NC
3 NC 10 NC
4 NC 11 CASE GND
5 NC 12 NC
6 NC 13 NC
7 NC 14 NC
14 13 12 11 10 9 8
Top View
1
2
3
4
5
6
7
DiCon Fiberoptics, Inc. 1689 Regatta Blvd. Richmond, CA 94804
Tel. (510)620-5000
Fax. (510)620-4100
www.diconfiber.com
0121B
Attenuators
PM MEMS Attenuator
Attenuators
DIY/Open Source Hardware
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