Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-08-21
2007-08-21
Bovernick, Rodney (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
Reexamination Certificate
active
11021549
ABSTRACT:
An optical waveguide includes a set of diffractive elements. The diffractive element set routes within the waveguide a diffracted portion of an input optical signal between input and output optical ports. The input optical signal is successively incident on the diffractive elements. The optical signal propagates in the waveguide in a corresponding signal optical transverse mode substantially confined in at least one transverse dimension. A modal index of the signal optical mode or a modal index of a loss optical mode spatially varies along a signal propagation direction within the optical waveguide, or the loss optical mode is optically damped as it propagates along the optical waveguide. Said signal modal index variation, said loss modal index variation, or said loss mode damping yields a level of optical coupling between the signal optical mode and the loss optical mode at or below an operationally acceptable level.
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Greiner Christoph M.
Iazikov Dmitri
Mossberg Thomas W.
Alavi David S.
Bovernick Rodney
LightSmyth Technologies Inc
Stahl Mike
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