Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1992-06-19
1995-03-07
Goldstein, Herbert
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359124, 359156, 359161, 359190, 359191, 359192, 359194, H04B 1000, H04B 1006, H04J 1402
Patent
active
053963610
ABSTRACT:
A system for stabilizing a frequency separation between two coherent light sources includes first and second current sources driving first and second semiconductor laser devices with first and second frequencies, respectively. Light from the semiconductor laser devices is combined in a multiplexer, and a portion the combined light is diverted to an optical-to-electrical transducer. Output current from the transducer is combined with an output of a local oscillator driven at a selected frequency. A combined signal is then filtered, and used to form a control signal of one of the semiconductor laser devices.
REFERENCES:
patent: 4726011 (1988-02-01), Ih et al.
patent: 4732447 (1988-03-01), Wright et al.
patent: 4783852 (1988-11-01), Auracher
patent: 4839614 (1989-06-01), Hill et al.
patent: 4888817 (1989-12-01), Ryu et al.
patent: 4965858 (1990-10-01), Naito et al.
Glanee, B., et al., Densely-Spaced FDM Coherent Star Network With Optical Signals Frequency-Locked To A Comb Of Equally-Spaced Frequencies, IEEE .COPYRGT. 1988.
European Conference on Optical Communication, Sep. 21, 1982, pp. 174-178; Steele et al., Electronic Controll of a Difference Frequency Between Two Semiconductor Lasers.
Applied Physics B, vol. B 35, No. 7, Nov./1984, pp. 119-122, Whitford, Simultaneous Phase-Lock of Five CO2 Lasers to a Primary Cs Frequency Standard.
Mollenauer, White; Tunable Lasers (Topics in Applied Physics vol. 59), 1987 p. 13, paragraph B.
Journal of Optical Communication, vol. 2, No. 3, Sep./1981, pp. 82-88, Okoshi, Kimura; Heterodyne-Type Optical Communication.
Maeda Minoru
Sasaki Shinya
Tsushima Hideaki
Goldstein Herbert
Hitachi , Ltd.
Negash K.
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