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Attenuators
MEMS Attenuator
DiCon’s 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
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. MEMS Attenuators can
also be used for input power adjustment in erbium-doped fiber ampli-
fiers.
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
0 to 15 dB
Polarization
dependent loss 15 to 20 dB
Attenuation slope
Polarization mode dispersion
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
0.15 dB max.
0.2 dB max.
20 dB/V max.
0.05 ps max.
-50 dB max.
500 mW max.
2 ms max.
0.1 dB max.
1 x 10 cycles min.
9/125 single mode fiber
-5
0
C to +70
0
C
-40
0
C to +85
0
C
9
Ordering Information
MT -
-
-
-
-
-
9
-
-
-
Housing Type
C
D
T
O
13
15
16
20
X
S
F
2B
9L
FC
FC/APC
X
N
1
X
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)
250
µ
barefiber
900
µ
loosetube
FC/SPC
FC/APC
specify connector type
3
None
1 meter
Specify X meters
0.4 dB max.
0.7 dB max.
0.2 dB max.
Flatness
Attenuator Type
Operating Wavelength Range
Attenuator Range
Ripple Type
Jacket Type
Connector Type
1. All specifications referenced without connectors.
2. At room temperature.
3. Maximum change of each 2 nm segment within the operating range.
Pigtail Length
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.
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
MEMS-VOA
Ø2.5
Ø5.56
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
Ø5.56
2 (CNTL)
3 (GND)
14-pin DIP Package
Opaque
4.07
4.84
UNITS: mm
2.54
ø
5.50
9.50
20.83
12.70
7.50
7.62
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
30
14 13 12 11 10 9 8
40
50
0
1
2
3
4
5
Control Voltage (V)
6
7
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
0047I
Attenuators
MEMS Attenuator
Attenuators
