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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 3 — Mar. 1, 2010
  • pp: 370–374

Fiber in-line Mach–Zehnder interferometer fabricated by femtosecond laser micromachining for refractive index measurement with high sensitivity

Ying Wang, Minwei Yang, D. N. Wang, Shujing Liu, and Peixiang Lu  »View Author Affiliations


JOSA B, Vol. 27, Issue 3, pp. 370-374 (2010)
http://dx.doi.org/10.1364/JOSAB.27.000370


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Abstract

We report a compact fiber in-line Mach–Zehnder interferometer for refractive index sensing with high sensitivity and precise sensing location. One arm of the interferometer contains a microcavity formed by removing part of the fiber core near the core and cladding interface by femtosecond laser micromachining, and the other arm remains in line with the remaining part of the fiber core. Such a fiber in-line Mach-Zehnder interferometer exhibits an extremely high refractive-index-sensitivity of 9370 nm /RIU (refractive index unit) within the refractive index range between 1.31 and 1.335.

© 2010 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.1150) Optical devices : All-optical devices
(320.7140) Ultrafast optics : Ultrafast processes in fibers

ToC Category:
Optical Devices

History
Original Manuscript: September 15, 2009
Revised Manuscript: December 11, 2009
Manuscript Accepted: December 21, 2009
Published: February 2, 2010

Virtual Issues
Vol. 5, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Ying Wang, Minwei Yang, D. N. Wang, Shujing Liu, and Peixiang Lu, "Fiber in-line Mach-Zehnder interferometer fabricated by femtosecond laser micromachining for refractive index measurement with high sensitivity," J. Opt. Soc. Am. B 27, 370-374 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-3-370

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