| 基于SOA互增益调制双折射效应的全光2-4电平编码转换 |
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| 引用本文： | 王春华,刘涛,李力,于清洋. 基于SOA互增益调制双折射效应的全光2-4电平编码转换[J]. 半导体光电, 2013, 34(1): 111-114 |
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| 作者姓名： | 王春华 刘涛 李力 于清洋 |
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| 作者单位： | 上海大学通信与信息工程学院特种光纤与光接入网省部共建重点实验室,上海,200072 |
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| 基金项目： | 国家自然科学基金项目(61077018);上海市重点学科项目(S30108/08DZ2231100) |
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| 摘 要： | 提出了一种利用半导体光放大器(SOA)的互增益调制(XGM)的双折射效应实现全光2-4电平编码转换的方法.两路2-电平强度调制光信号正交偏振合波后,沿SOA的主轴进入,利用SOA的偏振调制实现被调制信号光的偏振调制,通过检偏输出4-电平强度调制光,从而实现2-4电平调制的编码转换.
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| 关 键 词： | 半导体光放大器(SOA) 互增益调制(XGM) 双折射效应 光电平调制 |
| 收稿时间： | 2012-10-10 |
Optical 2-to-4 Level Coding Transform Based on Birefringent XGM of SOA |
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| WANG Chunhu,LIU Tao,LI Li and YU Qingyang. Optical 2-to-4 Level Coding Transform Based on Birefringent XGM of SOA[J]. Semiconductor Optoelectronics, 2013, 34(1): 111-114 |
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| Authors: | WANG Chunhu LIU Tao LI Li YU Qingyang |
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| Affiliation: | Key Lab.of Specialty Fiber Optics and Optical Access Networks,School of Communication and Information Engineering,Shanghai University,Shanghai 200072,CHN;Key Lab.of Specialty Fiber Optics and Optical Access Networks,School of Communication and Information Engineering,Shanghai University,Shanghai 200072,CHN;Key Lab.of Specialty Fiber Optics and Optical Access Networks,School of Communication and Information Engineering,Shanghai University,Shanghai 200072,CHN;Key Lab.of Specialty Fiber Optics and Optical Access Networks,School of Communication and Information Engineering,Shanghai University,Shanghai 200072,CHN |
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| Abstract: | An optical 2-to-4 level coding transform based on the birefringence effect of cross-gain modulation(XGM) of semiconductor optical amplifiers(SOAs) is proposed. In the proposed scheme, two orthogonally linearly-polarized 2-level control lights are superposed and launched into a SOA with their polarization azimuths aligned with the TE/TM axes. Due to the birefringence effect of XGM effect of the SOA, the two control lights experience different gains and phases and put different XGM effects on the signal light to be modulated. Thus, a 4-level output signal light can be obtained by properly adjusting the power ratio of the two control lights. |
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| Keywords: | semiconductor optical amplifier cross-gain modulation birefringence optical multilevel modulation |
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