Circuit for optical WDM system

Details Circuit for optical WDM system Circuit for optical WDM system

1997-12-02

1999-09-14

Lee, John D.

Optical waveguides

With optical coupler

Plural

385 15, 359127, G02B 628, G02B 6293

Patent

active

059534702

ABSTRACT:
A WDM optical circuit includes an optical circulator having a first path from a first port to a second port and a second path from the second port to a third port. The optical WDM signals received from the second port of the optical circulator are separated out by a WDM coupler on wavelengths, respectively. One of the optical signals on a selected wavelength is dropped and a new signal is added on the same wavelength by an optical transceiver.

REFERENCES:
patent: 5440416 (1995-08-01), Cohen et al.
patent: 5751456 (1998-05-01), Koonen
patent: 5793507 (1998-08-01), Giles et al.
patent: 5822095 (1998-10-01), Taga et al.
T. Miyakawa, et al., "Suppression of Cross-Talk Penalty in Optical ADM by High Speed Polarization Scrambler", Lett., 5, pp. 304-306, 1993.
M. Miyachi, et al., "A Study on Wavelength Deviation in Optical ADM Network", Toshiba Corp. R&D Center, 1996.

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