參數(shù)資料
型號(hào)： HFCT-5205B
英文描述： 155 Mb/s SMF Transceiver for SONET/SDH OC-3/SDH STM-1 0C to +70C Black Case
中文描述： 155 Mb / s的單模光纖收發(fā)器的SONET / SDH的OC-3/SDH的STM - 1 0C至70C黑色外殼
文件頁數(shù)： 5/10頁
文件大?。?/td> 224K
代理商： HFCT-5205B
4
Functional Description
Transmitter Section
Design
The transmitter section, Figure 3,
uses a Multiple Quantum Well
laser as its optical source. The
package of this laser is designed
to allow repeatable coupling into
single mode fiber. In addition, this
package has been designed to be
compliant with IEC 825 Class 1
and CDRH Class I eye safety
requirements. The optical output
is controlled by a custom IC
which detects the laser output via
the monitor photodiode. This IC
provides both dc and ac current
drive to the laser to ensure correct
modulation, eye diagram and
extinction ratio over temperature,
supply voltage and life.
PCB mounting
The HFCT-5205 has two
solderable mounting studs,
Figures 5 and 6. These studs are
not electrically connected. The
transceiver is designed for
common production processes. It
may be wave soldered and
aqueous washed providing the
process plug is in place.
Each process plug can only be
used once during processing,
although with subsequent use, it
can be used as a dust cover.
Figure 3 - Simplified Transmitter Schematic
DATA
PECL
INPUT
LASER
MODULATOR
LASER
LASER BIAS
DRIVER
LASER BIAS
CONTROL
PHOTODIODE
(rear facet monitor)
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