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Fixed 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. Such lssue 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
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PERFORMANCE SPECIFICATIONS
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Performance
highlights (Typical)
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Values
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Operating
Wavelength. nm
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850
or 1310 or 1550
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1310
and 1550
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Attenuation
Range
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5dB~25dB
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Attenuation
Variation
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<10dB
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±0.5dB
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±
0.75dB
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≧10dB
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±10%
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±
15%
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Return
Loss, dB
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＞45(PC) ＞60(APC)
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Operating
Temperature, 。C
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-40~75
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Storage
Temperature, 。C
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-55~85
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ORDERING INFORMATION
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