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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 18 — Sep. 9, 2013
  • pp: 20506–20516

Resonant transport of light from planar polymer waveguide into liquid-crystal microcavity

V. S. R. Jampani, M. Humar, and I. Muševič  »View Author Affiliations


Optics Express, Vol. 21, Issue 18, pp. 20506-20516 (2013)
http://dx.doi.org/10.1364/OE.21.020506


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Abstract

We demonstrate the resonant transfer of light from a planar waveguide to a nematic liquid-crystal microdroplet immersed in water. A wide spectrum of light from a supercontinuum laser source is coupled into a high-refractive-index polymer waveguide using a prism-film coupler. The waveguide is in contact with a water dispersion of droplets from the nematic liquid-crystal 5CB. The evanescent field of the light in the waveguide is resonantly coupled to the whispering-gallery mode resonances, sustained by 5 – 20μm-sized nematic liquid-crystal droplets, which are in close proximity to the waveguide. The resonant transfer of light is tuned by the temperature-induced shifting of the WGM resonances due to the temperature dependence of the refractive index of the nematic liquid crystal. The measurements are compared to the calculations of the coupled-mode theory.

© 2013 Optical Society of America

OCIS Codes
(230.3720) Optical devices : Liquid-crystal devices
(230.7400) Optical devices : Waveguides, slab
(140.3948) Lasers and laser optics : Microcavity devices
(230.4555) Optical devices : Coupled resonators
(130.5460) Integrated optics : Polymer waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: June 11, 2013
Revised Manuscript: August 14, 2013
Manuscript Accepted: August 15, 2013
Published: August 26, 2013

Citation
V. S. R. Jampani, M. Humar, and I. Muševič, "Resonant transport of light from planar polymer waveguide into liquid-crystal microcavity," Opt. Express 21, 20506-20516 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-18-20506


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