Coherent light generators – Particular resonant cavity – Distributed feedback
Patent
1988-04-26
1989-07-11
Davie, James W.
Coherent light generators
Particular resonant cavity
Distributed feedback
372 26, 372 32, 372 50, H01S 308
Patent
active
048478563
ABSTRACT:
A phase-shift distributed-feedback semiconductor laser includes an electrode for injecting a current to the entire area of the semiconductor laser. The laser also includes portions each for shifting an optical phase by a 1/4 wavelength at at least three locations, the number of which is an odd number. These portions are formed in a light propagation direction of the phase-shift distributed-feedback semiconductor laser structure.
REFERENCES:
patent: 4701930 (1987-10-01), Akiba et al.
patent: 4751719 (1988-06-01), Mito et al.
patent: 4775980 (1988-06-01), Chinoue et al.
J. Appl. Phys. vol. 43, No. 5, May 1972, pp. 2327-2335 "Coupled-Wave Theory of Distributed Feedback Lasers" by H. Kogelnik et al.
Electronics Letters Mar. 28, 1985 vol. 21, No. 7 pp. 283-285 "Realisation of Flat FM Response by Directly Modulating a Phase Tunable DFB Laser Diode" by S. Yamazaki et al.
Proc. Opt. Fiber Conf., Atlanta, Tuesday Morning, Feb. 25, 1986 Salon II Tufi "Independent Modulation in Amplitude and Frequency Regimes by a Multielectrode Distributed-Feedback Laser" by Y. Yoshikuni et al.
Electronics Letters Oct. 24, 1985 vol. 21 No. 22 pp. 1046-1048 "Measured Dynamic Linewidth Properties of a 1.5 .mu.m DFB-GRIN-ROD Coupled-Cavity Laser Under Direct High-Frequency Modulation" by T. P. Lee et al.
Electronics Letters Nov. 24, vol. 19, No. 24 pp. 1026-1027 "Semiconductor Laser Linewidth in Optical Feedback Configurations" by E. Patzak et al.
Electronics Letters Jan. 2, vol. 22, No. 1 pp. 5-7 "Long-Span Optical FSK Heterodyne Single-Filter Detection Transmission Experiment Using a Phase-Tunable DFB Laser Diode" by S. Yamazaki et al.
IEEE Journal of Quantum Electronics, vol. QE-12, No. 9, Sep. 1976 pp. 532-539 "Antisymmetric Taper of Distributed Feedback Lasers" by H. Hans et al.
Proc. I.E.E.E. Semiconductor Laser Conference, Kanagawa 1986 E-2 pp. 60-61 "Stability in Single Longitudinal Mode Operation in Galn AsP/lnP Phase Adjusted DFB LD'S" by H. Soda et al.
Kimura Tatsuya
Sugimura Akira
Davie James W.
Nippon Telegraph and Telephone Corporation
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