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Proceedings Paper

Double-pass bidirectional pump broadband L-band erbium-doped superfluorescent fiber source
Author(s): Hua Wang; Yi-Gang Li; Xin-Dong Chen; Chao Zhang; Sheng-Ping Chen; Fu-Yun Lu; Ke-Cheng Lu
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Paper Abstract

In this paper, a novel double-pass bidirectional pump broadband L-band erbium-doped superfluorescent fiber source (SFS) is demonstrated for the first time. In this fiber source, the EDF is divided into two segments, one of which (EDF2) is bidirectional pumped by a 980nm laser diode through two wavelength division multiplexers (WDM), and the other one (EDF1) is arranged between the reflector and the first WDM. EDF1 is unpumped. The fiber length ratio of the EDF1 length to the total length is defined as RL=LEDF1/(LEDF1+ LEDF2). The pump power ratio of forward to total pump power of EDF2 is defined as K=Pforward/Ptotal. The effects of the fiber length and pump power arrangement on the output characteristics of the L-band fiber source are simulated. With an appropriate pump power ratio K and an optimal fiber length ratio RL, broadband L-band erbium-doped SFS with flat output spectrum can be obtained. Additionally, the optimal fiber length ratio RL is also depended on the pump power ratio K. When K>0.4, the optimal RL tends to be changeless. When K=0.1, the optimal RL is 0 and widest flat spectrum is achieved with a 3-dB bandwidth of 63 nm (1540nm-1603nm).

Paper Details

Date Published: 8 January 2008
PDF: 6 pages
Proc. SPIE 6838, Optoelectronic Devices and Integration II, 68380U (8 January 2008); doi: 10.1117/12.756590
Show Author Affiliations
Hua Wang, Nankai Univ. (China)
Yi-Gang Li, Nankai Univ. (China)
Xin-Dong Chen, Nankai Univ. (China)
Chao Zhang, Nankai Univ. (China)
Sheng-Ping Chen, Nankai Univ. (China)
Fu-Yun Lu, Nankai Univ. (China)
Ke-Cheng Lu, Nankai Univ. (China)


Published in SPIE Proceedings Vol. 6838:
Optoelectronic Devices and Integration II
Xuping Zhang; Hai Ming; Maggie Yihong Chen, Editor(s)

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