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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 19 — Jul. 1, 2012
  • pp: 4448–4456

Optical performance of symmetrical and asymmetrical Y-branch couplers for plastic optical fibers

Jao-Hwa Kuang, Pao-Chuan Chen, and Yung-Chuan Chen  »View Author Affiliations


Applied Optics, Vol. 51, Issue 19, pp. 4448-4456 (2012)
http://dx.doi.org/10.1364/AO.51.004448


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Abstract

The excess loss and output optical power ratio of symmetrical and asymmetrical Y-branch couplers for plastic optical fibers (POFs) are studied in this work. A ray-tracing model for the Y-branch coupler is derived to investigate the effect of coupling parameters on its optical performance. The coupling parameters, namely coupling angle, axial displacement, and refractive index of filling medium between the emitting-end and receiving-end POFs, are studied. The simulated and measured results indicate that the coupling efficiency is sensitive to all these coupling parameters. A minimum excess loss of approximately 0.83 dB is observed for the symmetrical Y-branch coupler. It is found that both the excess loss and the output power ratio are increased with the increase of the refractive index of the filling medium and the total coupling angle (α+β) for the asymmetrical Y-branch coupler. The experimental results indicate that the maximum output power ratio P1P2 is found to be 3.81 for excess loss of less than 2.8 dB for the asymmetrical Y-branch coupler.

© 2012 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(080.0080) Geometric optics : Geometric optics
(080.1753) Geometric optics : Computation methods

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: February 3, 2012
Revised Manuscript: April 2, 2012
Manuscript Accepted: April 23, 2012
Published: June 28, 2012

Citation
Jao-Hwa Kuang, Pao-Chuan Chen, and Yung-Chuan Chen, "Optical performance of symmetrical and asymmetrical Y-branch couplers for plastic optical fibers," Appl. Opt. 51, 4448-4456 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-19-4448

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