Coherent light generators – Particular beam control device – Optical output stabilization
Patent
1991-07-15
1993-07-13
Davie, James W.
Coherent light generators
Particular beam control device
Optical output stabilization
359183, 359187, 372 26, H01S 310, H04B 1000
Patent
active
052280438
ABSTRACT:
A direct modulation phase shift keying transmission system (DM-PSK transmission system) is disclosed for coherent optical fiber transmission in which an injection current supplied to a semiconductor laser is adapted to be directly modulated. This system presents useful features in automatic frequency control, demodulation, and phase noise suppression.
REFERENCES:
patent: 4805235 (1989-02-01), Henmi
patent: 5050176 (1991-09-01), Naito et al.
patent: 5077619 (1991-12-01), Toms
Chikama Terumi
Kuwahara Hideo
Naito Takao
Watanabe Shigeki
Davie James W.
Fujitsu Limited
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