QD fiber amplifier using a fiber coupler with a PbS QD-film

Hairun Guo; Fufei Pang; Xianglong Zeng; Tingyun Wang

doi:10.1117/12.888594

7 January 2011 QD fiber amplifier using a fiber coupler with a PbS QD-film

Hairun Guo, Fufei Pang, Xianglong Zeng, Tingyun Wang

Proceedings Volume 7987, Optoelectronic Materials and Devices V; 79870D (2011) https://doi.org/10.1117/12.888594
Event: Asia Communications and Photonics Conference and Exhibition, 2010, Shanghai, Shanghai, China

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.

Citation Download Citation

Hairun Guo, Fufei Pang, Xianglong Zeng, and Tingyun Wang "QD fiber amplifier using a fiber coupler with a PbS QD-film", Proc. SPIE 7987, Optoelectronic Materials and Devices V, 79870D (7 January 2011); https://doi.org/10.1117/12.888594

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