9901CAT-A-Ver004.3000 A - 17 We are committed to deliver quality
Attenuators are used in fiber optic transmission
systems to reduce the optical power received by
photo-detectors. The light intensity of laser diodes
and LED’s should be controlled to be within their
dynamical range. Otherwise, excess power level
can result in undesired radiation pattern, modal
structure and central wavelength. Such issue is
even more critical for high-speed singlemode
system where the laser is very sensitive to back
reflection.
Controlling the light intensity emitted by the
transmitter requires extra electronic circuitry. With
the use of adaptor type attenuators, system tuning
can now be accomplished at the destination office,
immediately in front of the receiver, instead of in the
field from the top of a bucket truck. This is much
more convenient and can significantly speed up
system installation. In addition, this will also reduce
downtime in case of equipment failures.
FOCI’s A-MV series mechanical type variable
attenuators are the most sophisticated devices
suitable for all applications demanding high
performance. The A-MV series come with your
choice of connector terminations, including APC,
ASC, FC, SC, or ST compatible connectors. With
the patented mode filter design, the A-MV series
can enhance mode stability dramatically and be
readily panel mounted without any dummy fiber.
n Environmentally stable
n Easy installation
n Custom designed specifications
n Low return loss
n Readily panel mountable
n Compact packaging
n Telecommunications
n LAN
n CATV
n Fiber optic sensors
n Testing instruments
n Fiber to the home
n Multi-channel
n Subscriber loop
n Optical transmission system
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A-MV
MECHANICAL TYPE VARIABLE
ATTENUATORS
We are committed to deliver quality A - 18 9901CAT-A-Ver004.3000
PERFORMANCE SPECIFICATIONS
PERFORMANCE SPECIFICATIONS
SPECIFICATIONS
Operating Wavelength nm 1200 to 1600
Residual Attenuation Max. dB 1.5
Attenuation Range Min. dB 45
Resolution Max. dB 0.15
Optical Return Loss Min. dB 55
Polarization Sensitivity Max. dB 0.2
Operation Temperature °C 0 to +60
Storage Temperature °C -40 to +75
Thermal Stability Max. dB/°C 0.03
Optical Power Max. mW 300
ENVIRONMENTAL RELIABILITY TEST
ENVIRONMENTAL RELIABILITY TEST
The performance of the attenuators has been carefully designed to
meet the toughest Bellcore standards
TR-NWT-000910
in the tests of :
n OPTICAL CHARACTERISTICS
n VIBRATION TEST
n THERMAL CYCLING
n IMPACT RESISTANCE
n SALT SPRAY EROSION
n THERMAL AGING
n HUMIDITY RESISTANCE
n OTHERS
n High Temperature Storage Test.........................................................................................85°C for 336 hours
n Low Temperature Storage Test........................................................................................-40°C for 336 hours
n Damp Heat Test...................................................................................................60°C / 95% RH for 336 hours
n Thermal Cycling Test..............................................................................................-40°C / 75°C for 336 hours
n Fiber Pulling Test...............................................................0.23Kg for 250µm fiber and 900µm loose tube
1.36 Kg for jacketed cable
n Water Immersion Test................................................................................................................43°C, 168 hours
n Vibration Test..................................................................................................10 ~ 55Hz random, 20G, 3 axis
n Impact Test ...................................................................................................................8 drops, 1.8 meters high
MECHANICAL TYPE VARIABLE
ATTENUATORS
9901CAT-A-Ver004.3000 A - 19 We are committed to deliver quality
ORDERING INFORMATION
ORDERING INFORMATION
A – MV- p- p - pp - pp / pp
Fiber Type
A..........Corning SMF-28™
C.........50/125µm
D.........62.5/125µm
X..........Other type of fiber
Cable Type
T..........900µm Tight Buffer (SMF-28)
Q.........3mm cable (SMF-28)
X..........Others
Fiber Length
01........1m
05........5m
10........10m
15........15m
20........20m
XX.......Others
Connector Type (input/output)
NC......None
FC.......FC type
SC.......SC type
ST.......ST type
AP.......FC/APC type
AS.......SC/APC type
XX.......Others
MECHANICAL TYPE VARIABLE
ATTENUATORS
We are committed to deliver quality A - 20 9901CAT-A-Ver004.3000
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