Highly Linear Radio-Over-Fiber System Incorporating a Single-Drive Dual-Parallel Mach-Zehnder Modulator

被引:107
作者
Li, Shangyuan [1 ]
Zheng, Xiaoping [1 ]
Zhang, Hanyi [1 ]
Zhou, Bingkun [1 ]
机构
[1] Tsinghua Univ, Tsinghua Natl Lab Informat Sci & Technol, Lab Opt Networking & Microwave Photon, State Key Lab Integrated Optoelect,Dept Elect Eng, Beijing 100084, Peoples R China
关键词
Modulator linearization; radio-over-fiber (RoF); spurious-free dynamic range (SFDR); vector modulation; INTERMODULATION DISTORTION;
D O I
10.1109/LPT.2010.2082516
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We propose a highly linear radio-over-fiber system with low intermodulation distortion (IMD) using a single-drive dual-parallel Mach-Zehnder modulator (SD-DPMZM). The optical carrier is modulated in one of the two parallel modulators, while remaining unmodulated in the other one. There exists optimal working points for SD-DPMZM that makes its two kinds of origins of third-order IMD (IMD3) have opposite phase and equal intensity, and cancel each other; hence the output IMD3 is suppressed dramatically. Experimental results show that the proposed scheme can achieve a spurious-free dynamic range of up to 122.9 dB . Hz(2/3), which is in agreement with the theoretical analysis. It is about 20 dB more than a conventional MZM. The error vector magnitude of the proposed scheme, for a 16-QAM 10-MSym/s signal centered at 4 GHz, is 1.94%.
引用
收藏
页码:1775 / 1777
页数:3
相关论文
共 7 条
[1]   Highly Linear Integrated Optical Transmitter for Subcarrier Multiplexed Systems [J].
Ferreira, Ana ;
Silveira, Tiago ;
Fonseca, Daniel ;
Ribeiro, Rui ;
Monteiro, Paulo .
IEEE PHOTONICS TECHNOLOGY LETTERS, 2009, 21 (07) :438-440
[2]   REDUCTION OF INTERMODULATION DISTORTION IN INTERFEROMETRIC OPTICAL MODULATORS [J].
JOHNSON, LM ;
ROUSSELL, HV .
OPTICS LETTERS, 1988, 13 (10) :928-930
[3]   DUAL PARALLEL MODULATION SCHEMES FOR LOW-DISTORTION ANALOG OPTICAL-TRANSMISSION [J].
KOROTKY, SK ;
DERIDDER, RM .
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 1990, 8 (07) :1377-1381
[4]   Intermodulation distortion improvement for fiber-radio applications incorporating OSSB plus C modulation in an optical integrated-access environment [J].
Lim, Christina ;
Nirmalathas, Ampalavanapillai ;
Lee, Ka-Lun ;
Novak, Dalma ;
Waterhouse, Rod .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2007, 25 (06) :1602-1612
[5]   Enhanced Spurious-Free Dynamic Range Using Mixed Polarization in Optical Single Sideband Mach-Zehnder Modulator [J].
Masella, Biagio ;
Hraimel, Bouchaib ;
Zhang, Xiupu .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2009, 27 (15) :3034-3041
[6]   Microwave Photonics [J].
Yao, Jianping .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2009, 27 (1-4) :314-335
[7]   A Broadband Linearized Coherent Analog Fiber-Optic Link Employing Dual Parallel Mach-Zehnder Modulators [J].
Zhu, Guanghao ;
Liu, Wei ;
Fetterman, Harold R. .
IEEE PHOTONICS TECHNOLOGY LETTERS, 2009, 21 (21) :1627-1629