Inputs and outputs for an optical multiplexer/demultiplexer...

Details Inputs and outputs for an optical multiplexer/demultiplexer... Inputs and outputs for an optical multiplexer/demultiplexer...

2007-12-04

2007-12-04

Assaf, Fayez G. (Department: 2872)

Optical: systems and elements

Diffraction

From grating

C359S569000, C385S037000, C385S024000, C385S130000

Reexamination Certificate

active

11143800

ABSTRACT:
The invention relates to a planar waveguide reflective diffraction grating for use in an optical device, such as a wavelength division multiplexer, providing an increased bandwidth over conventional planar waveguide reflection diffraction gratings while eliminating the polarization dependent loss (PDL) typically associated therewith. The multiplexer/demultiplexer according to the present invention includes input and output ports optimally positioned in accordance with the grating facet diffraction envelope to minimized back reflection to the input ports and maximize output light collected from different diffraction orders.

REFERENCES:
patent: 5966483 (1999-10-01), Chowdhury
patent: 6097863 (2000-08-01), Chowdhury
patent: 6400509 (2002-06-01), Sappey et al.
patent: 6421478 (2002-07-01), Paiam
patent: 2003/0026541 (2003-02-01), Sappey et al.
patent: 01/77738 (2001-10-01), None

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