Single frequency semiconductor laser and drive with reduced line

Details Single frequency semiconductor laser and drive with reduced line Single frequency semiconductor laser and drive with reduced line

1984-12-21

1988-08-23

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

372 32, 372 33, M01S 3096

Patent

active

047665971

ABSTRACT:
By driving a semiconductor laser with a current pulse having an optimized shape, the relaxation oscillations of the laser are greatly suppressed. This leads to significantly reduced frequency chirping and improved side mode suppression. The pulse broadening normally produced by 100 km of single-mode fiber can be completely compensated by driving the laser with the optimized current pulse. This invention can be applied to any type of single frequency laser including DFB, C.sup.3, and the like.

REFERENCES:
patent: 4009385 (1977-02-01), Sell
patent: 4340966 (1982-07-01), Akiba
patent: 4461007 (1984-07-01), Burnham
W. Freude et al, "Inexpensive Equipment for Driving GaAs Lasers With 100 ps Risetime Pulses", Electronics Letters, vol. 12, No. 22, pp. 598-599 Oct. 1976.
R. A. Linke, Electronics Letters, 20:472 (1984).
Mito et al., Electronics Letters 20:261 (1984).
Linke et al., Conf. Optical Fiber Comm., New Orleans (Jan. 1984).
Koyana et al., J. Quantum Elect., 19:1042 (1983).
Midwinter, Opt. Quantum Elect., 9:299 (1977).

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