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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 25 — Dec. 16, 2013
  • pp: 31420–31429

Bending losses of optically anisotropic exciton polaritons in organic molecular-crystal nanofibers

Hiroyuki Takeda and Kazuaki Sakoda  »View Author Affiliations

Optics Express, Vol. 21, Issue 25, pp. 31420-31429 (2013)

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We theoretically examine the bending loss of organic molecular-crystal nanofibers for which the light propagation is carried out by optically anisotropic exciton polaritons. Previous experimental studies showed that the leakage of light for bent thiacyanine nanofibers was negligibly small even for the radius of curvature of several microns. We formulate a finite-difference frequency-domain method stabilized by a conformal transformation to calculate the bending loss as a function of the radius of curvature and the propagation frequency. The present method is applied to the thiacyanine nanofiber and numerical results that support the previous experimental observation are obtained. The present study clearly shows that the polariton nanofiber gives a novel possibility for bent waveguides to fabricate optical microcircuits and interconnection that cannot be attained by the conventional waveguides based on the index guiding.

© 2013 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(160.4890) Materials : Organic materials
(230.7370) Optical devices : Waveguides
(240.5420) Optics at surfaces : Polaritons

ToC Category:
Integrated Optics

Original Manuscript: June 4, 2013
Revised Manuscript: October 2, 2013
Manuscript Accepted: December 6, 2013
Published: December 12, 2013

Hiroyuki Takeda and Kazuaki Sakoda, "Bending losses of optically anisotropic exciton polaritons in organic molecular-crystal nanofibers," Opt. Express 21, 31420-31429 (2013)

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