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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 15 — May. 20, 1998
  • pp: 3181–3189

Polarization-Independent Optical Fiber Modulator by use of Polymer-Dispersed Liquid Crystals

Kuniharu Takizawa, Kenichi Kodama, and Kiyoshi Kishi  »View Author Affiliations


Applied Optics, Vol. 37, Issue 15, pp. 3181-3189 (1998)
http://dx.doi.org/10.1364/AO.37.003181


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Abstract

Ultrasmall light modulators have been made by sandwiching a polymer-dispersed liquid crystal (PDLC) between two ferrules with optical fibers. The device can modulate light independent of the state of polarization, because the PDLC becomes transparent or opaque when either sufficient or no voltage is applied to the film. The PDLC was prepared by mixing and annealing a prepolymer and nematic liquid crystal with large anisotropy. An optical fiber modulator with a 30-μm thick PDLC film had an extinction ratio of 8:1–33:1, an insertion loss of 1.3 dB, and rise and decay times of 4 ms at a wavelength of 1.3 μm.

© 1998 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.4510) Fiber optics and optical communications : Optical communications
(160.3710) Materials : Liquid crystals
(230.3720) Optical devices : Liquid-crystal devices
(230.4110) Optical devices : Modulators

Citation
Kuniharu Takizawa, Kenichi Kodama, and Kiyoshi Kishi, "Polarization-Independent Optical Fiber Modulator by use of Polymer-Dispersed Liquid Crystals," Appl. Opt. 37, 3181-3189 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-15-3181

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