| 考虑损耗时拉曼放大泵浦光的偏振效应 |
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| 引用本文： | 吴重庆.考虑损耗时拉曼放大泵浦光的偏振效应[J].北京交通大学学报(自然科学版),2009,33(6). |
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| 作者姓名： | 吴重庆 |
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| 作者单位： | 北京交通大学,发光与光信息技术教育部重点实验室,北京,100044 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 利用高非线性和较大吸收损耗的光子晶体光纤制作光纤拉曼放大器,是当前的一种趋势,这导致泵浦光非线性旋转效应明显增强.本文在考虑吸收损耗条件下,研究了泵浦光的非线性旋转问题,首次得出了连续光条件下的解析解.结果表明,输入线偏振光与圆偏振光都不会产生非线性旋转,只有椭圆偏振光才有非线性旋转.旋转是绕着邦加球的纬线进行,s_3保持不变.随着吸收损耗的增加,有效长度变小,相对的旋转速度变慢.这表明,如果光纤对于泵浦光的吸收越强,越有利于拉曼放大.
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| 关 键 词： | 非线性光纤光学 非线性偏振旋转 拉曼放大 光子晶体光纤 |
Polarization Rotation of Pump Light in Raman Fiber Amplifier with Attenuation |
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| WU Chongqing.Polarization Rotation of Pump Light in Raman Fiber Amplifier with Attenuation[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2009,33(6). |
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| Authors: | WU Chongqing |
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| Institution: | WU Chongqing(Key Laboratory of Luminescence , Optical Information,Ministry of Education,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | The production of Raman fiber amplifier by using the photonic crystal fiber with high nonlinearity and the bigger absorption attenuation is a new trend,leading to the remarkably enhanced nonlinear polarization rotation of pump beam.In this paper,considering the absorption attenuation,the nonlinear polarization rotation of pumping light is investigated,and,for the first time,an analytical solution is obtained under continuous light conditions.The results showed that input linearly polarized and circularly po... |
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| Keywords: | nonlinear fiber optics nonlinear polarization rotation Raman fiber amplifier photonic crystal fiber |
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