Controllable optical multiplexer

Details Controllable optical multiplexer Controllable optical multiplexer

2011-08-09

2011-08-09

Vanderpuye, Ken N (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C385S024000, C385S027000, C385S050000, C398S043000, C398S048000, C398S083000, C398S084000, C398S085000

Reexamination Certificate

active

07995923

ABSTRACT:
An inventive controllable optical multiplexer for control of multiplexing channels in a fiber-optic communication system provided with 2Nof wavelength-division multiplexing channels, whose optical frequencies are re-tunable at a constant wavelength shifting between adjacent channels, comprises a multi-stage structure of optical filters provided with elements for controllable re-tuning transmission coefficients. The optical filters are embodied in the form of single stage, and multi-stage asymmetric Mach-Zehnder interferometers. The electro-optical and thermo-optical phase shift devices are used for controllable re-tuning the transmission coefficients of the optical filters. The demultiplexer can be produced according to integrated optic technologies in the form of a monolithic solid-state device.

REFERENCES:
patent: 6754411 (2004-06-01), Ahmadvand et al.
patent: 6782158 (2004-08-01), Zhao
patent: 6795654 (2004-09-01), Cormack
patent: 6804430 (2004-10-01), Ooyama et al.
patent: 7085446 (2006-08-01), Hatayama

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