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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 16 — Aug. 15, 2013
  • pp: 3181–3184

Magnetic fluid-filled microhole in the collapsed region of a photonic crystal fiber for the measurement of a magnetic field

R. Gao and Y. Jiang  »View Author Affiliations


Optics Letters, Vol. 38, Issue 16, pp. 3181-3184 (2013)
http://dx.doi.org/10.1364/OL.38.003181


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Abstract

A method for measurement of a magnetic field by filling a microhole with magnetic fluid (MF) in a photonic crystal fiber (PCF) is presented and experimentally demonstrated. A microhole is created in the collapsed region between the PCF and the single-mode fiber by using femtosecond laser micromachining, and a PCF-based Mach–Zehnder interferometer is formed. The MF is filled into the microhole. Due to the tunable refractive index property of the MF, the mode field diameter of the propagation light is changed with the external magnetic field, and the magnetic field can be detected by measuring the visibility contrast of the white light interferogram. The experimental results show that sensitivity of up to 0.042dB/Oe is achieved.

© 2013 Optical Society of America

OCIS Codes
(160.3820) Materials : Magneto-optical materials
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.1150) Optical devices : All-optical devices
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: June 20, 2013
Revised Manuscript: July 22, 2013
Manuscript Accepted: July 22, 2013
Published: August 15, 2013

Citation
R. Gao and Y. Jiang, "Magnetic fluid-filled microhole in the collapsed region of a photonic crystal fiber for the measurement of a magnetic field," Opt. Lett. 38, 3181-3184 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-16-3181


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