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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 7 — Mar. 1, 2007
  • pp: 1142–1149

Optical fiber refractometer using narrowband cladding-mode resonance shifts

Chun-Fan Chan, Chengkun Chen, Amir Jafari, Albane Laronche, Douglas J. Thomson, and Jacques Albert  »View Author Affiliations

Applied Optics, Vol. 46, Issue 7, pp. 1142-1149 (2007)

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Short-period fiber Bragg gratings with weakly tilted grating planes generate multiple strong resonances in transmission. Our experimental results show that the wavelength separation between selected resonances allows the measurement of the refractive index of the medium surrounding the fiber for values between 1.25 and 1.44 with an accuracy approaching 1 × 10 4 . The sensor element is 10   mm long and made from standard single-mode telecommunication grade optical fiber by ultraviolet light irradiation through a phase mask.

© 2007 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.5710) Instrumentation, measurement, and metrology : Refraction
(230.1480) Optical devices : Bragg reflectors

Original Manuscript: August 30, 2006
Manuscript Accepted: October 16, 2006
Published: February 12, 2007

Chun-Fan Chan, Chengkun Chen, Amir Jafari, Albane Laronche, Douglas J. Thomson, and Jacques Albert, "Optical fiber refractometer using narrowband cladding-mode resonance shifts," Appl. Opt. 46, 1142-1149 (2007)

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