Optical transmitter system
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United States of America Patent
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-
Jun 20, 2000
Grant Date -
N/A
app pub date -
Dec 4, 1997
filing date -
Dec 5, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical transmitter system includes a semiconductor laser, an external modulator, a detector and a frequency-modulation controller. The semiconductor laser transmits an optical signal of a predetermined wavelength onto an optical fiber and a backscattering wave caused by the optical signal is detected by the detector. The frequency-modulation controller controls the semiconductor laser so that the amplitude of a frequency-modulation signal applied to the semiconductor laser is varied depending on a detection signal of the backscattering wave.
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