Optical Fibre Mode Structures Measured by Collection Mode Near-Field Scanning Optical Microscopy |
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作者姓名: | 唐麟 白明 明海 谢建平 |
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作者单位: | DepartmentofPhysics,UniversityofScienceandTechnologyofChina,Hefei230026 |
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摘 要: | High order fibre mode structures are measured by a near-field scanning optical microscope (NSOM) and are determined to be consistent with the standard fibre LP patterns. The mode-field distortions of high-order mode LP11 and LP21 structures by far-field measurement are analysed based on scalar diffraction theory, and the maximum distortions may reach as high as 5.1% and 6.2%。 This shows that the method of using the NSOM is more accuracy than the far-field measurement method, especially for high-order mode structures of optical fibres.
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关 键 词: | 光纤模结构 近场扫描光学显微镜 测量 高阶模结构 光强图象 |
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