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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 3 — Jan. 20, 1999
  • pp: 522–529

Comparison of the characteristics of double-pass erbium-doped superfluorescent fiber sources obtained from different flattening techniques

Tsair-Chun Liang, Yun-Shi Lin, and Yung-Kuang Chen  »View Author Affiliations


Applied Optics, Vol. 38, Issue 3, pp. 522-529 (1999)
http://dx.doi.org/10.1364/AO.38.000522


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Abstract

We investigate and compare the characteristics of erbium-doped superfluorescent fiber sources (SFS’s) obtained from the use of different flattening techniques in double-pass forward (DPF) and double-pass backward (DPB) configurations. The intrinsic flattening technique consists of optimizing the length of the erbium-doped fiber. The extrinsic flattening methods include the addition of a samarium-doped fiber (SDF) and a fiber-Bragg-grating (FBG) notched filter at the output end separately to shape the SFS spectrum. Although intrinsically flattened DPF and DPB SFS’s have a large output power of >34 mW, they are accompanied by an ∼3-dB ripple. The FBG-flattened DPF and DPB SFS’s can achieve a wide linewidth of 35 nm with a small ripple of ∼1.7 dB and better pump-power-dependent mean-wavelength stability; SDF-flattened DPF and DPB SFS’s are inferior because of the SDF’s lossy spectrum.

© 1999 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(140.3510) Lasers and laser optics : Lasers, fiber
(230.1480) Optical devices : Bragg reflectors

History
Original Manuscript: May 11, 1998
Revised Manuscript: August 31, 1998
Published: January 20, 1999

Citation
Tsair-Chun Liang, Yun-Shi Lin, and Yung-Kuang Chen, "Comparison of the characteristics of double-pass erbium-doped superfluorescent fiber sources obtained from different flattening techniques," Appl. Opt. 38, 522-529 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-3-522

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