Method for restoring or increasing photosensitivity in hydrogen or deuterium loaded large diameter optical waveguide
US7068897B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2003 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Oct 9, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02123
- WIPO fieldOptics
- WIPO sectorInstruments
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 250E 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 diameter of greater than 0.9 millimeters. 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.