基于偏振调制的最优接收灵敏度的ROF链路研究

李晶; 宁提纲; 裴丽; 简伟; 郑晶晶; 油海东; 温晓东

doi:10.3788/IRLA201645.0617004

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基于偏振调制的最优接收灵敏度的ROF链路研究

李晶, 宁提纲, 裴丽, 简伟, 郑晶晶, 油海东, 温晓东

文章导航 > 红外与激光工程 > 2016 > 45(6): 617004-0617004(6)

李晶, 宁提纲, 裴丽, 简伟, 郑晶晶, 油海东, 温晓东. 基于偏振调制的最优接收灵敏度的ROF链路研究[J]. 红外与激光工程, 2016, 45(6): 617004-0617004(6). doi: 10.3788/IRLA201645.0617004

引用本文:

Li Jing, Ning Tigang, Pei Li, Jian Wei, Zheng Jingjing, You Haidong, Wen Xiaodong. Study on a radio over fibre link with improved receiver sensitivity based on polarization modulation[J]. Infrared and Laser Engineering, 2016, 45(6): 617004-0617004(6). doi: 10.3788/IRLA201645.0617004

Citation:

Li Jing, Ning Tigang, Pei Li, Jian Wei, Zheng Jingjing, You Haidong, Wen Xiaodong. Study on a radio over fibre link with improved receiver sensitivity based on polarization modulation[J]. Infrared and Laser Engineering, 2016, 45(6): 617004-0617004(6). doi: 10.3788/IRLA201645.0617004

基于偏振调制的最优接收灵敏度的ROF链路研究

doi: 10.3788/IRLA201645.0617004

李晶^1,2,
宁提纲^1,2,
裴丽^1,2,
简伟^1,2,
郑晶晶^1,2,
油海东^1,2,3,
温晓东^1,2

1.
北京交通大学全光网络与现代通信网教育部重点实验室,北京 100044;
2.
北京交通大学光波技术研究所,北京 100044;
3.
青岛农业大学科学与信息学院,山东青岛 266109

基金项目:

国家自然科学基金(61405007);北京市自然科学基金(4154081);北京交通大学人才基金(2014RC027)

详细信息

作者简介:
李晶(1984-),男,讲师,博士,主要从事微波光子学方面的研究。Email:lijing@bjtu.edu.cn

中图分类号: TN929.11

Study on a radio over fibre link with improved receiver sensitivity based on polarization modulation

Li Jing^1,2,
Ning Tigang^1,2,
Pei Li^1,2,
Jian Wei^1,2,
Zheng Jingjing^1,2,
You Haidong^1,2,3,
Wen Xiaodong^1,2

1.
Key Lab of All Optical Network &Advanced Telecommunication Network of EMC,Beijing Jiaotong University,Beijing 100044,China;
2.
Institute of Lightwave Technology,Beijing Jiaotong University,Beijing 100044,China;
3.
Science and Information College,Qingdao Agricultural University,Qingdao 266109,China

摘要: 提出了一个基于偏振调制的最佳接收灵敏度ROF链路系统。其根本原理在于实现具有最佳光载波边带比(OCSR)的光单边带调制技术,为此,利用偏振调制和滤波技术,线偏光首先经由一个特定偏振角进入偏振调制器,然后一个固定起偏角的起偏器被用来合并偏振信息,最后利用一个光滤波器实现光双边带调制到光单边带调制的转换。研究发现所获得的OCSR只与两个偏振角(和)有关,通过仔细调节上述指标,可以将OCSR调谐至最佳值0 dB。利用仿真验证了上述结论,仿真发现通过将OCSR调谐至最佳值将大大提高ROF链路的接收灵敏度。
- 微波光子 /
- 微波光子链路 /
- 接收灵敏度 /
- 光单边带调制 /
- 光载波边带比
Abstract: In this work, a radio over fibre link with improved receiver sensitivity was reported. The basical mechanism of this prototype was to realize optical single sideband modulation with an optimum optical carrier-to-sideband ratio(OCSR). To do this, both polarization modulation and optical interleaving technology were employed. The linearly polarized incident light was firstly oriented at an angle of (0 or 90) relative to one principal axis of the polarization modulator (PolM), which is biased by V and driven by RF signals. Then a polarizer with its polarization direction (0 or 90) relative to one principal axis of the PolM was used to linearize the polarization state. Finally, optical double sideband signal was converted to optical single sideband signal by using a standard optical interleaver. It is found the OCSR is only dependent on the values of two polarization angle, and . With careful adjustment, the OCSR can be reduced to 0 dB, which is the optimum value for a single RF tone modulation. The receiver sensitivity of the fibre link is analyzed by theory and then verified by simulation. It can be greatly improved by using this technique.
- microwave photonic /
- radio-over-fibre link /
- receiver sensitivity /
- optical single sideband modulation /
- optical carrier-to-sideband ratio

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基于偏振调制的最优接收灵敏度的ROF链路研究

doi: 10.3788/IRLA201645.0617004

1. 北京交通大学全光网络与现代通信网教育部重点实验室,北京 100044;

2. 北京交通大学光波技术研究所,北京 100044;

3. 青岛农业大学科学与信息学院,山东青岛 266109

作者简介:
李晶(1984-),男,讲师,博士,主要从事微波光子学方面的研究。Email:lijing@bjtu.edu.cn

收稿日期: 2015-10-12
修回日期: 2015-11-15
刊出日期: 2016-06-25

基金项目:

国家自然科学基金(61405007);北京市自然科学基金(4154081);北京交通大学人才基金(2014RC027)

中图分类号: TN929.11

关键词:

摘要: 提出了一个基于偏振调制的最佳接收灵敏度ROF链路系统。其根本原理在于实现具有最佳光载波边带比(OCSR)的光单边带调制技术,为此,利用偏振调制和滤波技术,线偏光首先经由一个特定偏振角进入偏振调制器,然后一个固定起偏角的起偏器被用来合并偏振信息,最后利用一个光滤波器实现光双边带调制到光单边带调制的转换。研究发现所获得的OCSR只与两个偏振角(和)有关,通过仔细调节上述指标,可以将OCSR调谐至最佳值0 dB。利用仿真验证了上述结论,仿真发现通过将OCSR调谐至最佳值将大大提高ROF链路的接收灵敏度。

English Abstract

Study on a radio over fibre link with improved receiver sensitivity based on polarization modulation

1. Key Lab of All Optical Network &Advanced Telecommunication Network of EMC,Beijing Jiaotong University,Beijing 100044,China;

2. Institute of Lightwave Technology,Beijing Jiaotong University,Beijing 100044,China;

3. Science and Information College,Qingdao Agricultural University,Qingdao 266109,China

Received Date: 2015-10-12
Rev Recd Date: 2015-11-15
Publish Date: 2016-06-25

Keywords:

Abstract: In this work, a radio over fibre link with improved receiver sensitivity was reported. The basical mechanism of this prototype was to realize optical single sideband modulation with an optimum optical carrier-to-sideband ratio(OCSR). To do this, both polarization modulation and optical interleaving technology were employed. The linearly polarized incident light was firstly oriented at an angle of (0 or 90) relative to one principal axis of the polarization modulator (PolM), which is biased by V and driven by RF signals. Then a polarizer with its polarization direction (0 or 90) relative to one principal axis of the PolM was used to linearize the polarization state. Finally, optical double sideband signal was converted to optical single sideband signal by using a standard optical interleaver. It is found the OCSR is only dependent on the values of two polarization angle, and . With careful adjustment, the OCSR can be reduced to 0 dB, which is the optimum value for a single RF tone modulation. The receiver sensitivity of the fibre link is analyzed by theory and then verified by simulation. It can be greatly improved by using this technique.