Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-04-24
2007-04-24
Healy, Brian M. (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S129000, C385S130000, C385S014000, C398S084000, C398S087000, C398S085000, C398S135000, C398S139000
Reexamination Certificate
active
11140942
ABSTRACT:
The invention relates to a planar lightwave circuit including a two stage optical filter for use in a bi-directional transceiver. A first stage includes a non-dispersive optical filter, which enables light within in a certain wavelength range, e.g. a signal channel from a laser source, to be launched onto an input/output waveguide, while light within another wavelength range, e.g. one or more detector channels, will be directed from the input/output waveguide to a second stage. The second stage includes a reflective diffraction grating with a higher resolution than the first stage providing passbands 2 to 5 times thinner than the first stage.
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Balakrishnan Ashok
Bidnyk Serge
Pearson Matt
Enablence Inc.
Healy Brian M.
MacLean Doug
Teitelbaum Neil
Teitelbaum & MacLean
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