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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 4 — Feb. 1, 2013
  • pp: 775–779

Silica nanospheres for filtering higher-order optical fiber modes

Guigen Liu, Yihui Wu, Kaiwei Li, Peng Hao, and Ming Xuan  »View Author Affiliations

Applied Optics, Vol. 52, Issue 4, pp. 775-779 (2013)

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Tapered optical fibers (TOFs) modified by 400 nm-diameter silica nanospheres have been experimentally and theoretically investigated. Responses of the modified TOFs (MTOFs) to methylene blue (MB) solution and surrounding refractive index (RI) have been compared. The higher-order modes are effectively filtered by the silica nanospheres, which is visualized by the interferometric output spectrum of the MTOF. The higher-order mode filtering makes the MTOF respond to MB solution with reduced sensitivity, which endows the MTOF with the potential for distinguishing the RI property from the absorption property of the molecules under detection.

© 2013 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(290.4020) Scattering : Mie theory
(290.5825) Scattering : Scattering theory

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 7, 2012
Revised Manuscript: January 3, 2013
Manuscript Accepted: January 3, 2013
Published: January 30, 2013

Guigen Liu, Yihui Wu, Kaiwei Li, Peng Hao, and Ming Xuan, "Silica nanospheres for filtering higher-order optical fiber modes," Appl. Opt. 52, 775-779 (2013)

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