Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2006-02-14
2006-02-14
Song, Sarah (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S129000, C385S037000
Reexamination Certificate
active
06999662
ABSTRACT:
An optical device for filtering an optical signal is described. The optical filtering device comprises an optical input receiving the optical signal; an elongated waveguide connected to the input and having a modified transverse dimension to create a series of partially reflective segments having predetermined effective indices of refraction (neff) with a distribution within the waveguide to provide the filtering of the optical signal, wherein the segments are designed for single mode operation and wherein a reflected filtered output optical signal is generated, wherein the transverse dimension varies within a narrow range over which a transverse size of the mode remains close to its minimum value; an optical output connected to the waveguide for providing the filtered optical signal.
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Duguay Michel A.
Grondin Étienne
Chabot Isabelle
Ogilvy Renault LLP
Song Sarah
Universite Laval
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