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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 2 — Jan. 15, 2012
  • pp: 193–195

Perfectly notched long-period fiber grating filter based on ICP dry etching technique

Chia-Chin Chiang and Liren Tsai  »View Author Affiliations

Optics Letters, Vol. 37, Issue 2, pp. 193-195 (2012)

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This study presents a new process using inductively a coupled plasma dry etching method to manufacture a long-period fiber grating filter with exact period, vertical sidewalls, and smooth etched surfaces, and the filter is thus named a perfectly notched long-period fiber grating (NLPFG). This process can dramatically reduce production time, and thereby provide higher volume production. The fabricated NLPFG has periods of 640 μm, resonant-attenuation wavelengths of 1518 nm, and maximum resonance-attenuation of 21.79 dB. A force induced loss-tunable calibration of the NLPFG filter was implemented, and a monotonically increasing quadratic fitting was observed. The results demonstrated that the proposed NLPFG has a much better period precision compared to corrugated LPFG, and it has great potential for a loss-tunable filter and force transducer applications.

© 2012 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

Original Manuscript: September 23, 2011
Revised Manuscript: November 4, 2011
Manuscript Accepted: November 17, 2011
Published: January 12, 2012

Chia-Chin Chiang and Liren Tsai, "Perfectly notched long-period fiber grating filter based on ICP dry etching technique," Opt. Lett. 37, 193-195 (2012)

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