title: Extended-range fiber polarimetric strain sensor.
abstract: We describe a frequency-modulation technique that is applicable to two-beam interferometric systems illuminated by semiconductor diode lasers. The technique permits a determination of the optical path difference between the two arms of the interferometer and is used here to extend the range of a fiber polarimetric strain sensor by determining the order of the particular polarimetric fringe under consideration.
authors.forename: R M
authors.initials: RM
authors.lastname: Taylor
authors.forename: D J
authors.initials: DJ
authors.lastname: Webb
authors.forename: J D
authors.initials: JD
authors.lastname: Jones
authors.forename: D A
authors.initials: DA
authors.lastname: Jackson