OSA's Digital Library

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)
http://dx.doi.org/10.1364/OE.21.031420


View Full Text Article

Enhanced HTML    Acrobat PDF (1396 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

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

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

Citation
Hiroyuki Takeda and Kazuaki Sakoda, "Bending losses of optically anisotropic exciton polaritons in organic molecular-crystal nanofibers," Opt. Express 21, 31420-31429 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-25-31420


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. D. J. Lockwood and L. Pavesi, Silicon Photonics II: Components and Integration (Springer, 2011). [CrossRef]
  2. J. J. Hopfield, “Theory of the contribution of excitons to the complex dielectric constant of crystals,” Phys. Rev.112, 1555–1567 (1958). [CrossRef]
  3. K. Takazawa, J. Inoue, K. Mitsuishi, and T. Takamasu, “Fraction of a millimeter propagation of exciton polaritons in photoexcited nanofibers of organic dye,” Phys. Rev. Lett.105, 067401 (2010). [CrossRef] [PubMed]
  4. K. Takazawa, “Waveguiding properties of fiber-shaped aggregates self-assembled from thiacyanine dye molecules,” J. Chem. Phys.111, 8671–8676 (2007).
  5. K. Takazawa, “Flexibility and bending loss of waveguiding molecular fibers self-assembled from thiacyanine dye,” Chem. Phys. Lett.452, 168–172 (2008). [CrossRef]
  6. K. Takazawa, J. Inoue, K. Mitsuishi, and T. Kuroda, “Ultracompact asymmetric Mach-Zehnder interferometers with high visibility constructed from exciton polariton waveguides of organic dye nanofibers,” Adv. Func. Mater.23, 839–845 (2013). [CrossRef]
  7. H. Takeda and K. Sakoda, “Exciton-polariton mediated light propagation in anisotropic waveguides,” Phys. Rev. B86, 205319 (2012). [CrossRef]
  8. R. G. Hunsperger, Integrated Optics: Theory and Technology, 6th ed. (Springer, 2009). [CrossRef]
  9. A. Melloni, F. Carniel, R. Costa, and M. Martinelli, “Determination of bend mode characteristics in dielectric waveguides,” J. Lightwave Technol.19, 571–577 (2001). [CrossRef]
  10. D. Dai and S. He, “Analysis of characteristics of bent rib waveguides,” J. Opt. Soc. Am. A21, 113–121 (2004). [CrossRef]
  11. K. Kakihara, N. Kono, K. Saitoh, and M. Koshiba, “Full-vectorial finite element method in a cylindrical coordinate system for loss analysis of photonic wire bends,” Opt. Express14, 11128–11141 (2006). [CrossRef] [PubMed]
  12. C. T. Shih and S. Chao, “Simplified numerical method for analyzing TE-like modes in a three-dimensional circularly bent dielectric rib waveguide by solving two one-dimensional eigenvalue equations,” J. Opt. Soc. Am. B25, 1031–1037 (2008). [CrossRef]
  13. J. Xiao, H. Ni, and X. Sun, “Full-vector mode solver for bending waveguides based on the finite-difference frequency domain method in cylindrical coordinate systems,” Opt. Lett.33, 1848–1850 (2008). [CrossRef] [PubMed]
  14. J. Xiao and X. Sun, “Vector analysis of bending waveguides by using a modified finite-difference method in a local cylindrical coordinate system,” Opt. Express20, 21583–21597 (2012). [CrossRef] [PubMed]
  15. Z. Han, P. Zhang, and S. I. Bozhevolnyi, “Calculation of bending losses for highly confined modes of optical waveguides with transformation optics,” Opt. Lett.38, 1778–1780 (2013). [CrossRef] [PubMed]
  16. A. Taflove and S. C. Hagness, Computational Electrodynamics: The Finite-Difference Time-Domain Method, 3rd ed. (Artech House, 2005).
  17. F. L. Teixeira and W. C. Chew, “PML-FDTD in Cylindrical and Spherical Grids,” IEEE Microw. Guid. Wave Lett.7, 285–287 (1997). [CrossRef]
  18. D. Marcuse, “Bending losses of the asymmetric slab waveguide,” Bell Syst. Tech. J.50, 2551–2563 (1971). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Figures

Fig. 1 Fig. 2 Fig. 3
 
Fig. 4 Fig. 5
 

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited