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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 7 — Apr. 1, 2014
  • pp: 1905–1908

Femtosecond laser ablation of microstructures in fiber and application in magnetic field sensing

Qiancheng Zhao, Yutang Dai, Tao Li, Bin Liu, Minghong Yang, and Guanglin Yin  »View Author Affiliations


Optics Letters, Vol. 39, Issue 7, pp. 1905-1908 (2014)
http://dx.doi.org/10.1364/OL.39.001905


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Abstract

A novel (to our knowledge) 3D microstructure manufactured by a femtosecond laser in fiber Bragg grating (FBG) fiber cladding is proposed. The special spiral parameters including single thread and double thread with certain pitches of 60 and 80 μm are controlled by the feed and rotation speed of a rotary fixture. Moreover, supermagnetostrictive TbDyFe film with a thickness of nearly 6 μm is deposited on microgrooves of a FBG by magnetron sputtering technology to form the magnetic field sensing probe. Experimental results demonstrate that a FBG with a double-thread microstructure has a sensitivity of 1.1pm/mT responding to a magnetic field, and in a theoretical situation, it is approximately six times higher than the original optical fiber grating (approximately 0.2pm/mT). This new microstructure and method show great prospect in the magnetic field sensing domain.

© 2014 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(140.3510) Lasers and laser optics : Lasers, fiber
(220.4610) Optical design and fabrication : Optical fabrication

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: February 17, 2014
Revised Manuscript: February 22, 2014
Manuscript Accepted: February 22, 2014
Published: March 21, 2014

Citation
Qiancheng Zhao, Yutang Dai, Tao Li, Bin Liu, Minghong Yang, and Guanglin Yin, "Femtosecond laser ablation of microstructures in fiber and application in magnetic field sensing," Opt. Lett. 39, 1905-1908 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-7-1905

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