| Sm~(+2)/Sm~(+3)掺杂铝硅基玻璃光纤的光敏特性研究 |
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| 引用本文： | 竺逸年.Sm~(+2)/Sm~(+3)掺杂铝硅基玻璃光纤的光敏特性研究[J].光通信研究,1998(1). |
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| 作者姓名： | 竺逸年 |
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| 作者单位： | 上海电缆研究所!200093 |
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| 摘 要： | 用2 W多线输出功率的氩离子激光器照射Sm~（+2）/Sm~(+3)掺杂铝硅基玻璃光纤能产生0.005 1％的永久性折射率变化。通过测定LP_(11)模截止波长偏移能检测该光纤的光敏特性,同时在可见光区域能观察到宽消感应吸收带。钐掺杂光纤光敏特性是由多光子增强的Sm~(+2)离子消感应吸收过程所致。
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| 关 键 词： | 稀土元素 掺杂铝硅基玻璃光纤 光敏特性 |
Photosensitivity Studies of Sm~(+2)/Sm~(+3) Doped Aluminosilicate Fiber |
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| Zhu Yinian.Photosensitivity Studies of Sm~(+2)/Sm~(+3) Doped Aluminosilicate Fiber[J].Study on Optical Communications,1998(1). |
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| Authors: | Zhu Yinian |
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| Affiliation: | Shanghai Electric Cable Research Institute 200093 |
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| Abstract: | A permanent index change of 0. 005 1% was induced in Sm+2/Sm+3 doped aluminosilicate fiber by irradiating 2 W of multi-line output from an Ar ion laser. The photosensitivity was detected by measuring a shift in LPn mode cutoff wavelength. Bleaching of a broad absorption band in the visible was also observed. The origin of the photosensitivity in the Sm doped optical fiber is the bleaching of Sm+2 ion absorption bands enhanced by multiphoton processes. |
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| Keywords: | rare earth doped aluminosilicate optical fiber photosensitivity |
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