| http://www.w3.org/ns/prov#value | - Sensors of similar design, particularly strain sensors, are disclosed in patent specifications U.S. Pat. No. 5,513,913 and U.S. Pat. No. 5,564,832 and in the article by G. A. Ball et al., ???Polarimetric heterodyning Bragg-grating fiber-laser sensor???, Optics Letters 18 (22), p. 1976-1978.
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