Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Qingping Yang0
Barry Edward Jones0
Jirapong Lim0
Phillip Richard Jackson0
Date of Patent
January 2, 2007
0Patent Application Number
103628630
Date Filed
August 23, 2001
0Patent Primary Examiner
Patent abstract
Operation of a power-by-light valve (15) by a source (11) along an optical fibre (13) is monitored by means of optical sensors (14) from which light passes back along fibre (13) to monitoring and processing units (16, 17). The sensors (14) include fibre bragg gratings (41, 43) for detecting differential pressure across diaphragms (42) and for detecting temperature. At the input end, an optical coupler (12) supplies sensor signals to units (16, 17) which can control source (11) via a signal (32).
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