Electrically controlled wavelength multiplexing waveguide filter

Details Electrically controlled wavelength multiplexing waveguide filter Electrically controlled wavelength multiplexing waveguide filter

1996-12-19

1998-11-03

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Switch

385 24, 385 31, 385 37, G02B 626

Patent

active

058321489

ABSTRACT:
An optical switch for programmable spatial and spectral filtering of wavelength-multiplexed optical signals of different wavelengths. Multiple input and output waveguides are connected to a waveguide filter to allow adiabatic propagative evolution of an optical wave therebetween. A plurality of electrically-controlled diffraction gratings are formed in the waveguide filter to provide mode coupling between different optical modes. Each grating can be controlled electrically to achieve efficient power conversion between two different modes in the waveguide filter. Different modes can be directed to different output waveguides, thereby achieving programmable switching and signal modulation.

REFERENCES:
patent: 5621829 (1997-04-01), Ford
patent: 5651079 (1997-07-01), Goorjian

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