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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 29, Iss. 24 — Dec. 15, 2004
  • pp: 2852–2854

Use of liquid-crystal-clad fiber as a modal filter for a two-mode fiber-optic interferometer

Tien-Jung Chen  »View Author Affiliations


Optics Letters, Vol. 29, Issue 24, pp. 2852-2854 (2004)
http://dx.doi.org/10.1364/OL.29.002852


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Abstract

A novel two-mode fiber-optic interferometer employing a liquid-crystal-clad fiber as a modal filter is proposed. The liquid-crystal-clad fiber can guide one of the second-order modes, TE<sub>01</sub>, and leak out the other TM<sub>01</sub> and HE<sub>21</sub> modes. Thus two spatial modes, fundamental mode HE<sub>11</sub> and second-order mode TE<sub>01</sub> serve as the two arms of the interferometer to detect an external perturbation. The experimental results obtained when this interferometer was used to sense temperatures ranging from 20 to 100°C are demonstrated.

© 2004 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(230.0230) Optical devices : Optical devices
(230.3720) Optical devices : Liquid-crystal devices

Citation
Tien-Jung Chen, "Use of liquid-crystal-clad fiber as a modal filter for a two-mode fiber-optic interferometer," Opt. Lett. 29, 2852-2854 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-24-2852

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