Monitoring power in optical networks

Details Monitoring power in optical networks Monitoring power in optical networks

2005-12-27

2005-12-27

Nguyen, Tu T. (Department: 2877)

Optical waveguides

Planar optical waveguide

Reexamination Certificate

active

06980724

ABSTRACT:
An optical network may include a detector for detecting the power of each of a plurality of channels of a wavelength division multiplexed optical signal in one embodiment of the present invention. Each channel may be conveyed to an interface underneath a detector by way of a core formed in the substrate. The interface may include a trench with one side surface angled to form a reflector to reflect light upwardly to be detected by the detector. Other surfaces of said trench may also be reflective to reduce the cross talk between adjacent channels.

REFERENCES:
patent: 5384872 (1995-01-01), Jacobs-Cook et al.
patent: 6243524 (2001-06-01), Funabashi
patent: 6456766 (2002-09-01), Shaw et al.
patent: 6530698 (2003-03-01), Kuhara et al.
patent: 6567590 (2003-05-01), Okada et al.
patent: 6714696 (2004-03-01), Kishimoto et al.
Skinner et al., U.S. Appl. No. 10/329,252 entitled “Waveguides with Optical Monitoring” filed De. 24, 2002.

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