Single- and double-helix chiral fiber sensors
JOSA B, Vol. 24, Issue 10, pp. A48-A52 (2007)
http://dx.doi.org/10.1364/JOSAB.24.000A48
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Abstract
Copropagating core and cladding modes in optical fibers can be coupled by a grating with a period greatly exceeding the wavelength, since their propagation constants are similar. In contrast to conventional long-period gratings, in which the modulation is imposed by exposing a photosensitive core to ultraviolet light, we have created chiral long-period gratings with single- or double-helix symmetry by twisting optical fibers with nonconcentric or noncircular cores, respectively, as they pass through a short heat zone. The difference in symmetry between single- and double-helix gratings is manifested in their polarization properties. The use of these gratings as sensors of liquid level and temperature is demonstrated.
© 2007 Optical Society of America
OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2340) Fiber optics and optical communications : Fiber optics components
History
Original Manuscript: March 16, 2007
Revised Manuscript: May 22, 2007
Manuscript Accepted: May 23, 2007
Published: August 8, 2007
Virtual Issues
Photonic Metamaterials (2007) JOSA A
Citation
Victor I. Kopp, Victor M. Churikov, Guoyin Zhang, Jonathan Singer, Christopher W. Draper, Norman Chao, Daniel Neugroschl, and Azriel Z. Genack, "Single- and double-helix chiral fiber sensors," J. Opt. Soc. Am. B 24, A48-A52 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-10-A48
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