Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2006-03-21
2006-03-21
Ullah, Akm Enayet (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
C385S024000, C438S038000
Reexamination Certificate
active
07016571
ABSTRACT:
An arrayed waveguide grating (AWG) comprises at least two free space regions, a plurality of grating arms extending between the two space regions, a passivation layer formed over the arrayed waveguide grating and a plurality of inputs at least to one of the free space regions to receive a plurality of channel signals separated by a predetermined channel spacing. A depth of the passivation layer chosen by providing a TE to TM wavelength shift between TE and TM modes propagating through the arrayed waveguide grating being approximately less than or equal to 20% of a magnitude of the channel spacing.
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Joyner Charles H.
Kish, Jr. Fred A.
Missey Mark J.
Nagarajan Radhakrishnan L.
Carothers, Jr. W. Douglas
Infinera Corporation
Petkovsek Daniel
Ullah Akm Enayet
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