Method and apparatus for altering the effective mode index...

Details Method and apparatus for altering the effective mode index... Method and apparatus for altering the effective mode index...

2005-04-12

2005-04-12

Ullah, Akm Enayet (Department: 2874)

Optical waveguides

With optical coupler

Movable coupler

C385S014000, C385S131000

Reexamination Certificate

active

06879751

ABSTRACT:
An effective index modifier that modifies light propagation in a waveguide. The device is formed on a wafer, such as a Silicon-On-Insulator (SOI) wafer that includes an insulator layer and an upper silicon layer. A waveguide is formed at least in part in the upper silicon layer of the SOI wafer. The waveguide guides an optical signal by total internal reflection. At least one micro-mechanical system (MEMS) having at least one movable component is disposed a positive distance away from the waveguide. Application of voltage to the MEMS results in a variation of the distance between the moveable component and the waveguide, which in turn alters the effective index of the waveguide in a location proximate the moveable object, thereby resulting in modification of light propagation in the waveguide.

REFERENCES:
patent: 6389189 (2002-05-01), Edwards et al.
patent: 20030003735 (2003-01-01), Deliwala
patent: 20030003736 (2003-01-01), Delwala
patent: 20030003737 (2003-01-01), Delwala

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