Mechanisms and methods for selective wavelength filtering

Details Mechanisms and methods for selective wavelength filtering Mechanisms and methods for selective wavelength filtering

2007-03-06

2007-03-06

Doan, Jennifer (Department: 2874)

Optical waveguides

Planar optical waveguide

C385S130000, C385S131000

Reexamination Certificate

active

11044063

ABSTRACT:
An optical filter includes a dielectric waveguide layer, supporting waveguide modes at specific wavelengths and receiving incident light, a corrugated film layer, composed of one of a metal and a semiconductor and positioned adjacent to a second surface of the waveguide layer and a sensor layer, wherein the sensor layer is capable of absorbing optical energy and generating a corresponding electrical signal. The metal film layer supports a plurality of plasmons, the plurality of plasmons producing a first field and is excited by a transverse mode of the waveguide modes at a wavelength interval. The first field penetrates the sensor layer and the sensor layer generates an electrical signal corresponding to an intensity of received incident light within the wavelength interval.

REFERENCES:
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patent: 5986808 (1999-11-01), Wang
patent: 6034809 (2000-03-01), Anemogiannis
patent: 2003/0138208 (2003-07-01), Pawlak et al.

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