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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 34, Iss. 23 — Dec. 1, 2009
  • pp: 3677–3679

Sandwiched long-period fiber grating filter based on periodic SU8-thick photoresist technique

Chia-Chin Chiang, Tsung-Chieh Cheng, Hao-Jhen Chang, and Liren Tsai  »View Author Affiliations


Optics Letters, Vol. 34, Issue 23, pp. 3677-3679 (2009)
http://dx.doi.org/10.1364/OL.34.003677


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Abstract

A loss-tunable sandwiched long-period fiber grating (SLPFG) filter is proposed in this Letter. This SLPFG utilized thick SU8 photoresist layers to induce refractive index modulations, and ultrahigh period precision was hence achieved. The external force required to tune this SLPFG filter is about 0.3942 N with the deepest loss attenuation 31.29 dB at 1534 nm wavelength. This process not only improves the overall performance of traditional long period fiber grating but also cuts down the facility cost by 50%. The proposed SLPFG has great potential for low-cost and compact force transducer applications.

© 2009 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.2440) Instrumentation, measurement, and metrology : Filters
(350.2770) Other areas of optics : Gratings

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: September 16, 2009
Manuscript Accepted: October 13, 2009
Published: November 23, 2009

Citation
Chia-Chin Chiang, Tsung-Chieh Cheng, Hao-Jhen Chang, and Liren Tsai, "Sandwiched long-period fiber grating filter based on periodic SU8-thick photoresist technique," Opt. Lett. 34, 3677-3679 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-23-3677


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