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Variable Optical
Attenuator 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. Suchlssue 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 attenuator, 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 failure.
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FEATURES
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Environmentally
stable
Custom designed specifications
Easy installation
Readily panel mountable
Compact packaging
Low return loss
Low insertion loss
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APPLICATIONS
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Telecommunications
Local Area Networks(LAN)
Fiber optic sensors
CATV
Test Equipment
Fiber To The home(FTTH)
Optical transmission system
Subscriber loop
Multi-channel |
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PERFORMANCE SPECIFICATIONS
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ITEM
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STANDARD
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Operating
Wavelength. nm
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Multimode
850~1300
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Singlemode
1300~1650
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Connector
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FC
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ST,
SC
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FC
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ST,
SC
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Attenuation,
dB
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0~18
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0~25
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0~22
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0~28
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Min.
Return Loss, dB
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45(PC) 60(APC)
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Insertion
Loss, dB
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<0.3
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| Operating
Temperature,。C |
-40~75
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| Storage
Temperature, 。C |
-55~85
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ORDERING INFORMATION
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