基于双平行马赫-曾德尔调制器的大动态范围微波光子下变频方法

王云新; 李虹历; 王大勇; 李静楠; 钟欣; 周涛; 杨登才; 戎路

doi:10.7498/aps.66.098401

摘要

为了提高微波光子下变频链路的性能，提出了基于集成双平行马赫-曾德尔调制器的微波光子下变频方法.通过理论推导和数值仿真分析了系统的增益和无杂散动态范围，实验搭建了基于双平行马赫-曾德尔调制器的下变频链路，控制直流偏置电压使双平行马赫-曾德尔调制器工作在高载波抑制的双边带调制模式，并对链路进行了性能测试.实验结果表明：该下变频链路的增益为7.43 dB，无杂散动态范围达到了110.85 dB/Hz2/3，工作频段可覆盖518 GHz的宽频范围.基于双平行马赫-曾德尔调制器的下变频方法可优化设计输出频谱，系统结构简单、易于实现，为微波光子下变频链路提供了有效的解决方案.

关键词:

Abstract

With the rapid development of the microwave photonic communication technology, the frequency of the microwave signal is expanded to the Ka waveband, since most of low frequency bands are occupied. However, the current commercial detectors and signal processing modules are limited by bandwidth. Therefore, the traditional method of directly detecting the microwave signals cannot meet the actual demands. It is essential to achieve the microwave photonic down-conversion from the high frequency microwave signal (~10 GHz) to the lower frequency signal (~100 MHz). Meanwhile, the down-conversion low frequency signal can be processed by the existing mature technology and low cost devices. The microwave down-conversion link can effectively avoid leaking the local oscillator, and it possesses many advantages such as high bandwidth and spurious free dynamic range, low loss and low noise. In this paper, a microwave photonic down-conversion system is presented based on the integrated dual-parallel Mach-Zehnder modulator (DPMZM) to increase the spurious-free dynamic range as well as conversion efficient of microwave photonic link. The integrated DPMZM is mainly comprised of two intensity modulators (MZM-a and MZM-b), and a phase shifter. The radio frequency (RF) signal is loaded into DPMZM to modulate the optical signal. The local oscillator is loaded into the MZM-a to produce the 1st local oscillator sideband, and two RF signals are fed to the MZM-b to form the 1st RF signal sideband. The direct current bias of the DPMZM is adjusted to output a high carrier suppressed double sideband (DSB) signal. The erbium-doped fiber amplifier is used to increase the power of light to match the power range of the detector. The RF signal sideband and local oscillator sideband are mixed to produce the beat frequency, and the frequency down-conversion can be achieved. The principle of frequency down-conversion is elaborated by theoretical analysis. The conversion efficiency and spurious free dynamic range are analyzed and simulated. On this basis, the microwave photonic link of frequency down-conversion is built. The performance of the system is tested. The ratio of optical carrier power to sideband power of the DSB signal is 26 dB. The experimental result shows that the conversion efficiency is 7.43 dB and spurious-free dynamic range is 110.85 dB/Hz2/3. The down-conversion method based on the DPMZM can optimize the output spectrum of the sideband. The structure of system is simple and easy to implement, so it is a good option for improving the conversion efficiency and spurious-free dynamic range.

Keywords:

作者及机构信息

1.
北京工业大学应用数理学院, 北京 100124;

2.
北京市精密测控技术与仪器工程技术研究中心, 北京 100124;

3.
电子信息控制国防科技重点实验室, 成都 610036

通信作者: 王大勇, wdyong@bjut.edu.cn;zhj_zht@163.com ; 周涛, wdyong@bjut.edu.cn;zhj_zht@163.com ;

基金项目: 国家自然科学基金（批准号：61372061，51477028，61475011）资助的课题.

Authors and contacts

1.
College of Applied Sciences, Beijing University of Technology, Beijing 100124, China;

2.
Beijing Engineering Research Center of Precision Measurement Technology and Instruments, Beijing University of Technology, Beijing 100124, China;

3.
Science and Technology on Electronic Information Control Laboratory, Chengdu 610036, China

Corresponding author: Wang Da-Yong, wdyong@bjut.edu.cn;zhj_zht@163.com ; Zhou Tao, wdyong@bjut.edu.cn;zhj_zht@163.com ;

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 61372061, 51477028, 61475011).

参考文献

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施引文献

[1]	Minasian R A 2006 IEEE Trans. Microw. Theory Tech. 54 832
[2]	Thomas V A, EI-Hajjar M, Hanzo L 2016 IET Commun. 10 534
[3]	Jia Z S, Yu J J, Chang G K 2006 IEEE Photon. Technol. Lett. 18 1726
[4]	Sancho J, Chin S, Sagues M, Loayssa A, Lloret J, Gasulla L, Sales S, Thevenaz L, Capmany L 2010 IEEE Photon. Technol. Lett. 22 1753
[5]	Kazaura K, Wakamori K, Matsumoto M, Higashino T, Tsukamoto K, Komaki S 2010 IEEE Commun. Mag. 48 130
[6]	Nguyen L V T 2009 IEEE Photon. Technol. Lett. 21 642
[7]	Lasri J, Shtaif M, Eisenstein G, Avrutin E A, Koren U 1998 J. Lightwave Technol. 16 443
[8]	Li Y F, Wang R Y, Herczfeld P, Klamkin J, Johansson L, Bowers J 2009 IEEE MTT-S International Microwave Symposium Boston, USA, June 7-12, 2009 p153
[9]	Chen Y S, Zhang C, Hong C, Li M J, Zhu L X, Hu W W, Chen Z Y 2009 14th Opto. Electronics and Communication Conference Hong Kong, China, July 13-17, 2009 p556
[10]	Torres-Company V, Leaird D E, Weiner A M 2012 Opt. Lett. 37 3993
[11]	Wang J J, Chen M H, Liang Y H, Chen H W, Yang S G, Xie S Z 2014 IEEE Microwave Photonics(MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) Sapporo, Japan, October 20-23, 2014 p222
[12]	Tang Z Z, Zhang F Z, Pan S L 2014 Opt. Express 22 305
[13]	Howerton M M, Moeller R P, Gopalakrishnan G K, Burns W K 1996 IEEE Photon. Technol. Lett. 8 1692
[14]	Gopalakrishnan G K, MoellerR P, Howerton M M, Burns W K, Williams K J, Esman R D 1995 IEEE Trans. Microw. Theory Tech. 43 2318
[15]	Hass B M, Murphy T E 2011 IEEE Photon. J. 3 1
[16]	Pagan V R, Haas B M, Murphy T E 2011 Opt. Express 19 883
[17]	Li P X, Pan W, Zou X H, Pan S L, Luo B, Yan L S 2015 IEEE Photon. J. 7 5500907
[18]	Sun J L, Yu L, Zhong Y P 2015 Opt. Commun. 336 315
[19]	Jiang T W, Yu S, Wu R H, Wang D S, Gu W Y 2016 Opt. Lett. 41 2640
[20]	Erwin H W Chan, Robert A M 2012 J. Lightwave Technol. 30 3580
[21]	Ali A, Erwin H W Chan, Robert A M 2014 Appl. Opt. 53 3687
[22]	Gao Y S, Wen A, Zhang H X, Xiang S Y, Zhang H Q, Zhao L J, Shang L 2014 Opt. Commun. 321 11
[23]	Huang L, Li R M, Chen D L, Xiang P, Wang P, Pu T, Chen X F 2016 IEEE Photon. Technol. Lett. 28 880

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