| Near-Field Characterization of Optical Micro/Nanofibres |
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| 作者姓名： | 马哲 王姗姗 杨青 童利民 |
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| 作者单位： | State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 310027 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 60425517 and 60378036. |
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| 摘 要： | Near-field scanning optical microscopy is used to investigate the waveguiding properties of optical micro/nanofibres （MNFs） by means of detecting optical power carried by evanescent waves. Taper drawn silica and tellurite MNFs, supported on low-index substrates, are used to guide a 532-nm-wavelength light beam for the test. Modification of the single-mode condition of the MNF in the presence of a substrate is observed. Spatial modulation of the longitudinal field intensity （with a 195-nm period） near the output end of a 760-nm-diameter silica MNF is well resolved. Energy exchange through evanescent coupling between two parallel MNFs is also investigated.
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| 关 键 词： | 纳米纤维 光纤维 材料学 光学 |
| 收稿时间： | 2007-6-15 |
| 修稿时间： | 2007-06-15 |
Near-Field Characterization of Optical Micro/Nanofibres |
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| MA Zhe,WANG Shan-Shan,YANG Qing,TONG Li-Min.Near-Field Characterization of Optical Micro/Nanofibres[J].Chinese Physics Letters,2007,24(10):3006-3008. |
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| Authors: | MA Zhe WANG Shan-Shan YANG Qing TONG Li-Min |
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| Affiliation: | State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University Hangzhou 310027 |
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| Abstract: | Near-field scanning optical microscopy is used to investigate the waveguiding properties of optical micro/nanofibres (MNFs) by means of detecting optical power carried by evanescent waves. Taper drawn silica and tellurite MNFs, supported on low-index substrates, are used to guide a 532-nm-wavelength light beam for the test. Modification of the single-mode condition of the MNF in the presence of a substrate is observed. Spatial modulation of the longitudinal field intensity (with a 195-nm period) near the output end of a 760-nm-diameter silica MNF is well resolved. Energy exchange through evanescent coupling between two parallel MNFs is also investigated. |
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| Keywords: | 87 64 Xx 42 79 Gn 78 67 -n 81 07 -b |
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