Optical trunk transmission system and an optical repeater circui

Details Optical trunk transmission system and an optical repeater circui Optical trunk transmission system and an optical repeater circui

1994-10-13

1995-11-14

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359176, 359177, 359179, 359183, H04B 1018, H04B 1017

Patent

active

054672139

ABSTRACT:
An optical transmission system that can perform not only amplification of optical signal level but also dispersion pre-equalization, as the signals are optical. In this invention, optical power level of an optical signal propagating through the dispersion medium is amplified in the optical amplifier. The signal becomes the optical signal a. A phase modulator driving circuit outputs a signal corresponding to the envelope signal of the optical signal a. An optical phase modulator phase-modulates the input optical signal a, outputs an optical signal d for which signal optimum dispersion pre-equalization is performed.

REFERENCES:
patent: 4709417 (1987-11-01), Kuwabara
patent: 4710976 (1987-12-01), Wakabayashi
patent: 5097353 (1992-03-01), Fujiwara
Saito et al., "Prechirp Technique for Dispersion Compensation for a High Speed Long-Span Transmission" pp. 74-76; IEEE Photonics Tech. Ltrs. vol. 3, No. 1, Jan. 1991.
Henmi et al., Technical Digest PD8 (Post Deadline Paper #8); Inter National Comference on Fiber Communication, 1990 pp. 1-4.
K. Nakagawa et al.; "Trunk and Distribution Network Application of Erbium-Doped Fiber Amplifier". J. of Lightwave Tech; vol. 9, No. 2, Feb. 1991, pp. 198-208.

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