Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-09-11
2007-09-11
Doan, Jennifer (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
C385S123000, C385S124000, C385S125000, C385S126000
Reexamination Certificate
active
11432639
ABSTRACT:
The present invention provides a new and unique method for increasing the photosensitivity of a large diameter optical waveguide having a cross-section of at least about 0.3 millimeters. The method features loading the large diameter optical waveguide with a photosensitizing gas at a pressure at least about 4000 pounds per square inch (PSI) at a temperature of at least about 250° Celsius. The photosensitizing gas may be hydrogen, Deuterium or other suitable gas. The method also includes the step of using a particular large diameter optical waveguide having a core more than 1000 microns from the surface thereof.The method may be used as part of a process for writing a Bragg grating in an inner core or a cladding of the large diameter optical waveguide.
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Dawson Jay W.
MacDougall Trevor W.
Putnam Martin A.
Russell Jerin J.
Troll John R.
CIDRA Corporation
Doan Jennifer
Grillo Michael
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