Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Reexamination Certificate
2007-03-06
2007-03-06
Healy, Brian (Department: 2883)
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
C385S014000, C385S039000, C385S040000, C385S129000, C385S130000, C257S094000, C257S431000, C257S432000
Reexamination Certificate
active
11069852
ABSTRACT:
An arrangement for actively controlling, in two dimensions, the manipulation of light within an SOI-based optical structure utilizes doped regions formed within the SOI layer and a polysilicon layer of a silicon-insulator-silicon capacitive (SISCAP) structure. The regions are oppositely doped so as to form an active device, where the application of a voltage potential between the oppositely doped regions functions to modify the refractive index in the affected area and alter the properties of an optical signal propagating through the region. The doped regions may be advantageously formed to exhibit any desired “shaped” (such as, for example, lenses, prisms, Bragg gratings, etc.), so as to manipulate the propagating beam as a function of the known properties of these devices. One or more active devices of the present invention may be included within a SISCAP formed, SOI-based optical element (such as, for example, a Mach-Zehnder interferometer, ring resonator, optical switch, etc.) so as to form an active, tunable element.
REFERENCES:
patent: 6298177 (2001-10-01), House
patent: 6374001 (2002-04-01), Bozeat et al.
patent: 6845198 (2005-01-01), Montgomery et al.
patent: 6968110 (2005-11-01), Patel et al.
Ghiron Margaret
Gothoskar Prakash
Montgomery Robert Keith
Patel Vipulkumar
Pathak Soham
Healy Brian
Koba Wendy W.
Peng Charlie
SiOptical Inc.
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