The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 2007
Filed:
May. 11, 2006
Jerin J. Russell, Ellington, CT (US);
Martin A. Putnam, Cheshire, CT (US);
Jay W. Dawson, Livermore, CA (US);
Trevor W. Macdougall, Simsbury, CT (US);
John R. Troll, Baltimore, MD (US);
Jerin J. Russell, Ellington, CT (US);
Martin A. Putnam, Cheshire, CT (US);
Jay W. Dawson, Livermore, CA (US);
Trevor W. MacDougall, Simsbury, CT (US);
John R. Troll, Baltimore, MD (US);
CIDRA Corporation, Wallingford, CT (US);
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.