Channel balancing of a wavelength division multiplexed...

Details Channel balancing of a wavelength division multiplexed... Channel balancing of a wavelength division multiplexed...

2006-11-21

2006-11-21

Chan, Jason (Department: 2633)

Optical communications

Multiplex

Wavelength division or frequency division

C398S079000, C398S087000, C398S037000

Reexamination Certificate

active

07139485

ABSTRACT:
The invention relates to methods and arrangements for channel balancing of a wavelength division multiplexed optical signal. Channel balancing according to the invention is performed by using a resonator that provides a selection region in which a selected channel has a substantially increased poser density relative to channels out of resonance. The selected channel is attenuated a desired amount, i.e. a desired amount of power is removed therefrom, by adjusting the properties of the selection region. In a preferred embodiment, attenuation is achieved by adjusting the selection region such that destructive interference is obtained for the selected channel in a fiber carrying tile multiplexed optical signal.

REFERENCES:
patent: 4466694 (1984-08-01), MacDonald
patent: 5307437 (1994-04-01), Facq et al.
patent: 6134034 (2000-10-01), Terahara
patent: 6501879 (2002-12-01), Asseh et al.
patent: 6665459 (2003-12-01), Cush et al.
Narrow-Band Resonant Optical Reflectors and Resonant Optical Transformers for Laser Stabilization and Wavelength Division Mutiplexing, Sep. 1987, pp. 1419-1425.
A Narrow-Band Si3N4-SiO2Resonant Optical Reflector, Sep. 1987, pp. 1426-1428.

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