參數(shù)資料
型號: TX20622
元件分類: 數(shù)字傳輸電路
英文描述: TRANSMITTER, XFO
文件頁數(shù): 1/3頁
文件大?。?/td> 27K
代理商: TX20622
TX 20622
622 Mb/s DIGITAL TRANSMITTER MODULE
DESCRIPTION
The TX20622 product is a high performance, cost
effective module for serial data communication
applications specified for a data rate up to 622
Mb/s.
This Transmitter integrates a 1300nm Fabry Perot
laser diode optically coupled into a single mode
fiber. The output power is controlled through a
specific circuit via a monitor photodiode. The
electronic circuit provides two controls which
maintain constant the output optical power level
both for a digital ‘one’ and a digital ‘zero’ on the
input. These two loops compensate effects due to
thermal
variations
on
characteristics. So, the transmitter circuit can
operate from -40°C to +85°C.
When there is no input digital stream, the loop is
blocked to protect the laser for the case of
appearance of a new signal. An alarm is provided
in that case.
Another alarm is provided when current into the
laser goes up to 150% of the initial value.
A digital interface, between digital inputs and laser
driver circuit, controls the peak to peak voltage to
the laser modulator input. So, variations can be
accepted on the digital input levels.
the
laser
diode
MAIN FEATURES : APPLICATIONS
SONET OC-12 / SDH STM 4 Equipment Interconnect and ATM applications
Data link
Fiber in the loop
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