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

1992-10-21

1995-02-21

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359183, 359187, H04B 1004

Patent

active

053921470

ABSTRACT:
The object of this invention is to offer 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 101a is amplified in the optical amplifier 102, the signal becomes the optical signal a. The phase modulator driving circuit 104 outputs a signal corresponding to the envelope signal of the optical signal a. The optical phase modulator 103 charged the signal phase-modulates the input optical signal a, outputs the optical signal d which is performed dispersion pre-equalization to dispersion medium 101b.

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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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