G - Physics – 01 – J
Patent
G - Physics
01
J
G01J 3/42 (2006.01) G01B 11/16 (2006.01) G01J 5/00 (2006.01) G01K 11/32 (2006.01) G01N 21/55 (2006.01) G02B 5/26 (2006.01) G02B 6/02 (2006.01) G02B 6/10 (2006.01) G02B 6/26 (2006.01) G02F 1/19 (2006.01)
Patent
CA 2504765
A retro-reflective sensor for sensing mechanical, chemical or temperature related information, is disclosed. The sensor is formed of an optical waveguide suitable for use in-situ in a high temperature environment having a Bragg grating written into a core region thereof with short-pulsed electromagnetic radiation, said optical waveguide having a glass transition temperature substantially higher than that of silica. Preferably the sensor is written into a length of sapphire fiber or within a zirconium waveguide. Preferably the pulse duration of the short pulsed electromagnetic radiation is less than 500 picoseconds.
Dai Xiaoli
Ding Huimin
Grobnic Dan
Henderson George
Lu Ping
Teitelbaum & Maclean
Through The Communications Research Centre Canada Her Majesty The Queen In Right Of Canada As Represented By The M
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