System and method for monitoring and controlling light...

Details System and method for monitoring and controlling light... System and method for monitoring and controlling light...

2006-06-27

2006-06-27

Leung, Christina Y. (Department: 2633)

Optical communications

Multiplex

Wavelength division or frequency division

C398S083000

Reexamination Certificate

active

07068940

ABSTRACT:
According to the present invention, a system and method provides for monitoring and controlling light propagation in optical transmission systems. The system either includes an optical circulator coupled to an optical add mechanism and is used to detect light propagation, or an optical monitoring device is coupled to the optical circulator and to the optical add device via a feedback path to control light propagation.

REFERENCES:
patent: 5926300 (1999-07-01), Miyakawa et al.
patent: 2001/0030786 (2001-10-01), Takahashi et al.
patent: 2003/0007209 (2003-01-01), Liu et al.
Feuer, Mark et al., “Crosstalk in a Metro-Scale Ring With Passive Optical Add/Drop,”LEOS 2000, 13thAnnual Meeting, IEEE, Nov. 13-16, 2000, pp. 694-695, vol. 2.
Dods, Sarah D. and Tucker, Rodney S., “Homodyne Crosstalk Performance of Reconfigurable Optical Add-Drop Multiplexers,”Optical Fiber Communication Conference and Exhibit, 2001,Mar. 17-20, 2001, vol. 2, p. TuW4-1-TuW4-3, ISBN: 1-55752-655-9.

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