Coherent signal processing device using an optical delay line an

Details Coherent signal processing device using an optical delay line an Coherent signal processing device using an optical delay line an

1990-09-17

1992-08-04

Baker, Stephen M.

Boots, shoes, and leggings

356345, 364822, 364827, 364841, G06E 300, G06G 716, G06G 719

Patent

active

051365324

ABSTRACT:
A coherent signal processing device is provided using a monomode optical fiber as delay line, comprising a source and a ring interferometer with a bidirectional coupler and a monomode optical fiber loop whose ends are coupled to two combined accesses of the coupler. The source is connected to one of the opposite accesses and a detector is connected to the last access. For processing, a series of electrooptical phase modulators, separated by identical fiber lengths corresponding to a given delay, are controlled simultaneously by an electric pulse signal. The processing is coherent for it results from the interferences between two optical waves following opposite paths.

REFERENCES:
patent: 4265541 (1981-05-01), Leclerc et al.
patent: 4370612 (1983-01-01), Puech et al.
patent: 4662751 (1987-05-01), Goss et al.
IEEE Transactions on Microwave Theory and Techniques, vol. MTT-33 No. 3, Mar. 1985, pp. 193-210, New York, US; K. P. Jackson et al, "Optical fiber delay-line signal processing".
Journal of Lightwave Technology, vol. LT-4, No. 7, Jul. 1986 pp. 852-857, IEEE, New York, US; W. A. Stallard et al.: "Integrated optic devices for coherent transmission".
Patent Abstracts of Japan, vol. 9, No. 58, (P-341)[1781], Mar. 14, 1985; & JP-Af-59 195 220, (Masayuki Izutsu), Jun. 11, 1984.
Arditty, H. et al., "Current sensor using state-of-the-art fiber-optic interferometric techniques", IOOC'81:Third Int'l. Conf. on Integrated Optics and Optical Fiber Communications, San Francisco, CA, USA, Apr. 27-29, 1981, pp. 128-130.
Bulmer, C., et al., "Fiber gyroscope with . . . LiNbO.sub.3 phase shifter", Optics Letters, vol. 6, No. 11, Nov. 1981, pp. 572-574.
Heismann, F., et al., "Integrated-optical frequency translator with strip waveguide", Appl. Phys. Lett. vol. 45, No. 1, Sep. 1984, pp. 490-492.

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