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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Grover Swartzlander
  • Vol. 31, Iss. 9 — Sep. 1, 2014
  • pp: 2232–2238

Excitation of core modes through side coupling to multimode optical fiber by hydrothermal growth of ZnO nanorods for wide angle optical reception

Hoorieh Fallah, Sulaiman W. Harun, Waleed S. Mohammed, and Joydeep Dutta  »View Author Affiliations

JOSA B, Vol. 31, Issue 9, pp. 2232-2238 (2014)

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Side coupling to core modes through zinc oxide (ZnO) nanorods grown around the fiber is demonstrated in this work. The scheme utilizes wet etching of the cladding region followed by hydrothermal growth of the nanorods. The combination of nanostructures and the optical fiber system is used to demonstrate a simple wide field of view (FOV) optical receiver. Core modes are excited by the light scattered in the region where the fiber core is exposed. The angular response of the receiver was tested using a nephlometer. Light coupling efficiency was extracted by deconvoluting the finite beam extinction from the measured power. The results were compared to a first-order analytical model in which the phase function is assumed to linearly shift with the incident angle. The trend of the experimental measurements agrees with the model. 180° FOV is verified, and maximum coupling efficiency of around 2.5% for a single fiber is reported. Excitation of core modes through side coupling shows potential for the application of these devices in optical receivers and sensors.

© 2014 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(220.0220) Optical design and fabrication : Optical design and fabrication

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: April 23, 2014
Revised Manuscript: July 23, 2014
Manuscript Accepted: July 31, 2014
Published: August 29, 2014

Hoorieh Fallah, Sulaiman W. Harun, Waleed S. Mohammed, and Joydeep Dutta, "Excitation of core modes through side coupling to multimode optical fiber by hydrothermal growth of ZnO nanorods for wide angle optical reception," J. Opt. Soc. Am. B 31, 2232-2238 (2014)

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