Frequency-encoded optical CDMA transmission system and optical r

Details Frequency-encoded optical CDMA transmission system and optical r Frequency-encoded optical CDMA transmission system and optical r

1997-02-13

1998-07-21

Ullah, Akm E.

Optical waveguides

With optical coupler

Plural

369 59, 369124, G02B 628

Patent

active

057845069

ABSTRACT:
An optical frequency-encoded CDMA transmission system is presented in which received optical signals are decoded in the electric part of an optical receiver (12). To that end, the optical receiver (12) has a single photodetector (6) which converts received light into an electric signal, and which is directly or indirectly connected to a decoding unit (9, 10; 13, 14, 15), for recovering the information contained in the characteristic frequency-encoded spectrum.

REFERENCES:
patent: 4866699 (1989-09-01), Brackett et al.
patent: 4954909 (1990-09-01), Sengoku
patent: 5566253 (1996-10-01), Nakashima et al.
patent: 5661709 (1997-08-01), Takagi et al.
Unger, Hans-George: "Optische Nachrichtentechnik, Elitera-Verlag", Berlin, 1976 pp. 115-118.
Hooijmans, Pieter W., et al. Why FSK and CPFSK Have Identical Linewidth Requirements. In: Journal of Lightwave Technology, vol. 12, No. 8, Aug. 1994, pp. 1412-1422.
"An Optical CDMA Method Based on Periodic Spectrum Encoding" by L. Moller, Proceedings of the 13th Annual Conference on European Fiber Optic Comm. England, 1995 pp. 178-181.

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