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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 30 — Oct. 20, 2008
  • pp: 5637–5643

Identical-dual-bandpass sampled fiber Bragg grating and its application to ultranarrow filters

Xueming Liu, Aoxiang Lin, Guoyong Sun, Dae Seung Moon, Dusun Hwang, and Youngjoo Chung  »View Author Affiliations


Applied Optics, Vol. 47, Issue 30, pp. 5637-5643 (2008)
http://dx.doi.org/10.1364/AO.47.005637


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Abstract

We have theoretically proposed and experimentally demonstrated a new kind of ultranarrow identical-dual-bandpass sampled fiber Bragg gratings (SFBGs) with a π phase shift technique. The spacing of two bandpasses of the proposed grating can be flexibly adjusted by changing the sampled period, and any desired spacing can be achieved in principle. An experimental example shows that the transmission peaks of two narrow transmission-band are near 1549.1 and 1550.1 nm . Based on the proposed SFBG, an ultranarrow identical-dual-channel filter is designed. Two channels of the proposed filter have an equal bandwidth, an even strength, and the same group delay. The bandwidth of each channel of our filter is as small as 1 pm and up to 10 3 pm (corresponding to 0.1 MHz ), which is less than the bandwidth of the conventional SFBG filters by a factor of 10 2 10 4 . The proposed grating and filter can find potential applications with slow light and dual-wavelength single-longitudinal-mode fiber lasers.

© 2008 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 1, 2008
Revised Manuscript: September 16, 2008
Manuscript Accepted: September 17, 2008
Published: October 15, 2008

Citation
Xueming Liu, Aoxiang Lin, Guoyong Sun, Dae Seung Moon, Dusun Hwang, and Youngjoo Chung, "Identical-dual-bandpass sampled fiber Bragg grating and its application to ultranarrow filters," Appl. Opt. 47, 5637-5643 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-30-5637


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