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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 11 — Jun. 3, 2013
  • pp: 13419–13424

Ampere force based magnetic field sensor using dual-polarization fiber laser

Linghao Cheng, Zhenzhen Guo, Jianlei Han, Long Jin, and Bai-Ou Guan  »View Author Affiliations

Optics Express, Vol. 21, Issue 11, pp. 13419-13424 (2013)

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A magnetic field sensor is proposed by placing a dual-polarization fiber grating laser under a copper wire. With a perpendicular magnetic field applied, an electrical current flowing through the copper wire can generate Ampere force to squeeze the fiber grating laser, resulting in the birefringence change inside the laser cavity and hence the change of the beat note frequency. When an alternating current is injected into the copper wire, the magnetic field induced beat note frequency change can be discriminated from environment disturbances. A novel fiber-optic magnetic field sensor is therefore demonstrated with high sensitivity and inherent immunity to disturbances.

© 2013 OSA

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(280.3420) Remote sensing and sensors : Laser sensors

ToC Category:

Original Manuscript: April 15, 2013
Revised Manuscript: May 18, 2013
Manuscript Accepted: May 19, 2013
Published: May 28, 2013

Linghao Cheng, Zhenzhen Guo, Jianlei Han, Long Jin, and Bai-Ou Guan, "Ampere force based magnetic field sensor using dual-polarization fiber laser," Opt. Express 21, 13419-13424 (2013)

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