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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 5 — Feb. 28, 2011
  • pp: 3854–3861

Coupling characteristics between two conical micro/nano fibers: simulation and experiment

Zehua Hong, Xinwan Li, Linjie Zhou, Xiaowei Shen, Jianguo Shen, Shuguang Li, and Jianping Chen  »View Author Affiliations


Optics Express, Vol. 19, Issue 5, pp. 3854-3861 (2011)
http://dx.doi.org/10.1364/OE.19.003854


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Abstract

The coupling characteristics of conical micro/nano fibers (CMNFs) are investigated using numerical simulations and experiments. Distinct from uniform micro/nano fibers (UMNFs), the coupling efficiency not only depends on the overlapping length between two CMNFs but also the tapering angle of the CMNFs. With the increase of overlapping length, the coupling efficiency gradually converges to a stable value, with its convergence speed determined by the angle of the CMNFs. Experimental result shows the convergent coupling efficiency can be >90%. The spectral response of the coupler shows a “box-shape” profile with a 3-dB bandwidth of 2 nm, resembling a flat-top bandpass filter. And experimental results also show the coupling characteristics of CMNFs are overlapping length and taper angle dependent, which verify the simulation conclusions.

© 2011 OSA

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(230.4000) Optical devices : Microstructure fabrication
(130.3990) Integrated optics : Micro-optical devices

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 11, 2010
Revised Manuscript: December 9, 2010
Manuscript Accepted: January 4, 2011
Published: February 14, 2011

Citation
Zehua Hong, Xinwan Li, Linjie Zhou, Xiaowei Shen, Jianguo Shen, Shuguang Li, and Jianping Chen, "Coupling characteristics between two conical micro/nano fibers: simulation and experiment," Opt. Express 19, 3854-3861 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-5-3854


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