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Proceedings Paper

QD fiber amplifier using a fiber coupler with a PbS QD-film
Author(s): Hairun Guo; Fufei Pang; Xianglong Zeng; Tingyun Wang
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Paper Abstract

A semiconductor QD fiber amplifier (SQDFA) is proposed and theoretically researched. The fiber amplifier makes use of a tapered twin SMF coupler and a PbS QD-film is coated on the surface of it. In the tapered region, QDs will be excited by the evanescent wave of a pump and produce a gain on signal. The fiber coupler is properly designed to ensure a desired power ratio of the output signal. Using a 1530-nm signal and a 980-nm pump, an optical gain of about 8 dB is achieved with a gain efficiency of 3.48dB/cm. This SQDFA has unique advantages including suppression to the amplified spontaneous emission (ASE), simple fabrication and lower insertion loss and thus has a great potential in fiber communication systems.

Paper Details

Date Published: 7 January 2011
PDF: 7 pages
Proc. SPIE 7987, Optoelectronic Materials and Devices V, 79870D (7 January 2011); doi: 10.1117/12.888594
Show Author Affiliations
Hairun Guo, Shanghai Univ. (China)
Fufei Pang, Shanghai Univ. (China)
Xianglong Zeng, Shanghai Univ. (China)
Tingyun Wang, Shanghai Univ. (China)


Published in SPIE Proceedings Vol. 7987:
Optoelectronic Materials and Devices V
Fumio Koyama; Shun Lien Chuang; Guang-Hua Duan; Yidong Huang, Editor(s)

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