Chromatic dispersion compensator and chromatic dispersion compen

Optical: systems and elements – Deflection using a moving element – Using a periodically moving element

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359130, H04B 1000

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active

057011885

ABSTRACT:
A chromatic dispersion compensator includes an optical circulator or a directional coupler having a first, second and third ports; an input transmission path connected to the first port; an output transmission path connected to the third port; a chirped grating connected to the second port; and a dispersion compensating fiber connected to at least one of the first, second and third ports. The dispersion compensating fiber and the chirped grating have chromatic dispersion characteristics which are opposite to the chromatic dispersion characteristics of the input and output transmission paths. In the wavelength compensator, the optical signal is incident into the first port from the input transmission path, and is made to go out to the chirped grating from the second port. Further, the optical signal is incident from the chirped grating to return to the second port, and is made to go to the output transmission path from the third port.

REFERENCES:
patent: 4953939 (1990-09-01), Epworth
patent: 5243609 (1993-09-01), Huber
patent: 5404413 (1995-04-01), Delavaux et al.
patent: 5410624 (1995-04-01), Morkel
Hill et al, A periodic In-Fiber Bragg Gratings for Optical Fiber dispersion Compensation, Proceedings of the 1994 Optical Fiber Communication Conference 1994.
Onishi et al, High Performance Dispersion-Compensating Fiber and its Application to Upgrading of 1.31 .mu.m Optimiized System, Proceeding ECOC '93 pp. 357-360.
Belou, The Realization of Broad-Band Dispersion Compensation Using the Multicladding Waveguide Structure, Proceedings ECOC '93 pp. 349-352.

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