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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 12 — Jun. 15, 2006
  • pp: 1794–1796

Multiple parameter vector bending and high-temperature sensors based on asymmetric multimode fiber Bragg gratings inscribed by an infrared femtosecond laser

Zhu Yong, Chun Zhan, Jon Lee, Shizhuo Yin, and Paul Ruffin  »View Author Affiliations


Optics Letters, Vol. 31, Issue 12, pp. 1794-1796 (2006)
http://dx.doi.org/10.1364/OL.31.001794


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Abstract

We present a multiple parameter integrated fiber sensor that can detect vector bending and ambient temperature simultaneously with a single asymmetric multimode fiber Bragg grating. Multimode Bragg gratings were fabricated in an all-silica core fiber by an infrared femtosecond laser, which showed multiple transmission dips in the transmission spectrum. Bending and ambient temperature fluctuations affect the shapes of multiple transmission dips in different ways. In bending, different dips have different sensitivities. On the other hand, temperature fluctuations tended to influence the dips uniformly across different dips. By analyzing the changing spectrum of dips, one can distinguish the changes induced by bending or temperature fluctuations. Furthermore, the high thermal stability of Bragg gratings inscribed by an infrared femtosecond laser can make this double parameter fiber sensor work in very harsh, high-temperature environments.

© 2006 Optical Society of America

OCIS Codes
(230.1480) Optical devices : Bragg reflectors
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7140) Ultrafast optics : Ultrafast processes in fibers
(350.3390) Other areas of optics : Laser materials processing

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: March 7, 2006
Manuscript Accepted: March 28, 2006

Citation
Zhu Yong, Chun Zhan, Jon Lee, Shizhuo Yin, and Paul Ruffin, "Multiple parameter vector bending and high-temperature sensors based on asymmetric multimode fiber Bragg gratings inscribed by an infrared femtosecond laser," Opt. Lett. 31, 1794-1796 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-12-1794

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