期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 27, 期 10, 页码 1362-1368出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2009.2013220
关键词
Optical fiber; quantum dot; red shift; spectrum
资金
- National Natural Science Foundation of China [60777023]
- Zhejiang Provincial Natural Science Foundation of China [Z407371]
A kind of optical fiber doped with CdSe/ZnS quantum dot in low concentrations was fabricated for preparing a fiber amplifier. The photoluminescence and absorption spectra transmitted through the doped fiber were measured in different doping concentrations and fiber lengths. Effects of the doping concentration and fiber length on the spectra were investigated by the experiment. Compare with the doping before, a red shift of the photoluminescence-peak wavelength was observed after the doping. The red shift goes up with the increases of doping concentration and fiber length in the concentration ranging from (0.33 similar to 2.5) x 10(-2) mg/mL and the fiber length from 1-20 cm. For the given excitation intensity, the maximum PL-peak intensity is related to the fiber length, and in the given fiber length, it is related to the doping concentration.
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