Stray light absorber including grating array

Details Stray light absorber including grating array Stray light absorber including grating array

2006-01-24

2006-01-24

Healy, Brian M. (Department: 2883)

Optical waveguides

With optical coupler

Input/output coupler

C385S031000, C385S047000, C385S049000, C385S129000, C385S130000, C385S131000

Reexamination Certificate

active

06990275

ABSTRACT:
An optical component comprising an optical waveguide and adjacent to it at least one grating array adapted to reflect stray light away from said optical waveguide. The use of a grating array with a plurality of structures like polygons or stripes gives the possibility to define a multiple of reflection directions. This is obtained by using polygons layed out in different orientations up to a random one or a Bragg grating preferably defined with a non-uniform period (chirped). Such grating arrays are usually structured within the same layer as the optical waveguide core layer.

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