Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2007-09-18
2007-09-18
Healy, Brian (Department: 2883)
Optical waveguides
With optical coupler
Plural
C385S015000, C385S031000, C385S037000, C385S039000, C385S044000, C385S045000, C385S046000
Reexamination Certificate
active
09986479
ABSTRACT:
An optical performance monitor for measuring the performance of optical networks has an echelle grating for demultiplexing an input beam into a plurality of wavelengths that are focused onto an array of divided output waveguides. Each divided output waveguide is positioned to receive a corresponding demultiplexed wavelength from the echelle grating or other waveguide multiplexer device. The divided output waveguides laterally separate the corresponding demultiplexed wavelength into a first and second portions. A detector array is positioned to receive the respective portions of the demultiplexed wavelengths and by comparing their relative intensity it is possible to detect any drift in the nominal wavelengths of the channels.
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Charbonneau Sylvain
Cheben Pavel
Delage Andre
Erickson Lynden
Janz Siegfried
Blevins Jerry Martin
Enablence Inc.
Healy Brian
MacLean Doug
Teitelbaum Neil
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