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Title: High temperature sustainable fiber bragg gratings
Authors: Wang, D 
Li, Y
Lu, J
Issue Date: 16-Nov-2010
Source: US Patent 7,835,605 B1. Washington, DC: US Patent and Trademark Office, 2010. How to cite?
Abstract: An optical fiber 200 with a high thermal resistance fiber Bragg grating (FBG) 130. Compared to existing FBG's, the invention provides greatly enhanced thermal stability, being stable up to C. The grating reflectivity and resonant wavelength are maintained for extended duration at high temperatures. The FBG is thus suitable in high temperature sensors. The high thermal resistance of the FBG is obtained in a method of pre-annealing the optical fiber 105 at high temperature prior to inscribing the FBG. The high thermal resistance is optionally enhanced in a post-FBG creation step of heat treating the optical fiber 105 and FBG.
Rights: Assignee: The Hong Kong Polytechnic University.
Appears in Collections:Patent

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