Optical waveguides – With optical coupler – Particular coupling function
Reexamination Certificate
2007-06-06
2009-08-18
Sanghavi, Hemang (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling function
C385S011000, C385S029000, C385S043000
Reexamination Certificate
active
07577325
ABSTRACT:
A method of fabricating a passive polarization sorter includes the steps of providing first and second waveguides. The first waveguide has an input and an output. The first waveguide supporting at least one guided TE polarized mode of mode ranking mode-i-TE and at least one guided TM polarized mode of mode ranking mode-j-TM. The second waveguide is positioned adjacent to the first waveguide, and the first and second waveguides are shaped to form an adiabatic region in which light having one of the TE and TM polarized modes remains within the first waveguide, and light having the other one of the TE and TM polarized modes evanescently couples into the second waveguide.
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Carothers, Jr. W. Douglas
Infinera Corporation
Sanghavi Hemang
Soltz David L.
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