| 消失场耦合光纤放大器的理论研究 |
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| 引用本文： | 单雪康,许大信,杨祥林,张明德.消失场耦合光纤放大器的理论研究[J].东南大学学报(自然科学版),1987(5). |
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| 作者姓名： | 单雪康 许大信 杨祥林 张明德 |
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| 作者单位： | 南京工学院电子工程系，南京工学院电子工程系，南京工学院电子工程系，南京工学院电子工程系 |
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| 基金项目： | 中国科学院科学基金资助课题 |
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| 摘 要： | 一、引言随着光纤通信技术的发展,对光纤中光信号直接进行放大的研究引起了各国学者的重视。目前有两类光纤放大技术得到较多的研究。一类是利用光纤中的非线性效应进行光放大。另一类是将光纤的一段以受泵浦作用的有源介质构成,使信号光通过时得到放大。若仅包层由有源介质构成,则信号光通过其消失场与有源介质互作用而获得放大,这便是消失场耦合光纤放大器。本文对这类放大器进行理论分析,对由多模和单模光纤构成放
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A Theoretical Study of the Evanescent Wave Coupling Type Fiber Amplifier |
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| Shan Xuekang Xu Daxin Yang Xianglin Zhang Mingde.A Theoretical Study of the Evanescent Wave Coupling Type Fiber Amplifier[J].Journal of Southeast University(Natural Science Edition),1987(5). |
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| Authors: | Shan Xuekang Xu Daxin Yang Xianglin Zhang Mingde |
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| Institution: | Dcpartment of Electronic Engineering |
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| Abstract: | The principle and gain characteristics of the evanescent wave coupling type fiber amplifier are analysed.Under the assumption of uniform pumping of the active cladding,gain of the multi-mode fiber amplifier is calculated vs. core diameter and refractive index of the cladding by means of series expan- sion.Taking into consideration the disuniform pumping of the active cladd- ing,gain is computed for the single-mode fiber amplifier making use of the perturbation theory.The computation shows that it is difficult to obtain high gains in multi-mode fiber amplifiers and their gains vary with the chan- ge of mode distribution,but effective light amplification can be realized in single-mode fiber amplifiers. |
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| Keywords: | optial fiber light amplification evanescent wave coupling |
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