Optical fiber sensor based on retro-reflective fiber bragg gratings
摘要
<p>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.</p>
申请公布号
EP1591809(B1)
申请公布日期
2011.02.09
申请号
EP20050405293
申请日期
2005.04.14
申请人
HER MAJESTY IN RIGHT OF CANADA AS REPRESENTED BY THE MINISTER OF INDUSTRY
发明人
MIHAILOV, STEPHEN J.;GROBNIC, DAN;SMELSER, CHRISTOPHER;WALKER, ROBERT;LU, PING;DING, HUIMIN;HENDERSON, GEORGE;DAI, XIAOLI