title: Cross-talk fiber-optic temperature sensor.
abstract: The temperature sensitivity of cross talk between closely spaced cores in a common cladding is calculated and compared with measurements. A periodic variation in core contrast is observed when one core is illuminated and the temperature is changed. The variation in light distribution, which is ascribable to a change in coupling between the cores, agrees with theoretical predictions. It is shown that cross talk can be made to be a sensitive, predictable function of temperature or by proper selection of materials, wavelength, and fiber geometry essentially temperature independent.
authors.affiliation: United Technologies Research Center, East Hartford, Connecticut 06108, USA.
authors.forename: G
authors.initials: G
authors.lastname: Meltz
authors.forename: J R
authors.initials: JR
authors.lastname: Dunphy
authors.forename: W W
authors.initials: WW
authors.lastname: Morey
authors.forename: E
authors.initials: E
authors.lastname: Snitzer