Coherent Detection-Based Automatic Bias Control of MachZehnder   Modulators for Various Modulation Formats

doi:10.1109/JLT.2014.2328997

CORC > 北京大学 > 信息科学技术学院

	Coherent Detection-Based Automatic Bias Control of MachZehnder Modulators for Various Modulation Formats
	Zhu, Xiaoqi ; Zheng, Zhennan ; Zhang, Cheng ; Zhu, Lixin ; Tao, Zhenning ; Chen, Zhangyuan
刊名	journal of lightwave technology
	2014
关键词	Automatic bias control (ABC) asymmetric 3 x 3 coupler optical modulator single carrier-QPSK orthogonal frequency-division multiplexing (OFDM) TRANSMITTER
DOI	10.1109/JLT.2014.2328997
英文摘要	In this paper, a method to automatically control the bias voltages of LiNbO3 Mach-Zehnder modulator (MZM) is proposed and demonstrated experimentally. The automatic bias control (ABC) method is based on low cost coherent detection employing 3 x 3 optical coupler, which enhances the dither detection sensitivity. By minimizing the monitored dither frequency components which represents the residual carrier component in the optical signal, the modulator biases are optimized. A 0-pi/2 square-wave phase modulation is introduced to mitigate the detection fluctuation induced by the imbalance of 3 x 3 coupler and improve the monitoring accuracy. Experiments show that the proposed method is universal for different modulation formats. High bias control precision is achieved for inner in-phase/quadrature (I/Q) branches and outer phase bias of optical quadrature modulator. The penalty caused by the proposed ABC is negligible for both single carrier (SC) modulation and optical orthogonal frequency division multiplexing modulation. The tolerance to temperature disturbance is also demonstrated.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000338659100002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Electrical & Electronic; Optics; Telecommunications; SCI(E); EI; 1; ARTICLE; zhuxq@pku.edu.cn; zhengzhennan@pku.edu.cn; zhangcheng.pku@gmail.com; zlx@pku.edu.cn; taozn@cn.fujitsu.com; chenzhy@pku.edu.cn; 14; 2502-2509; 32
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/152093]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Zhu, Xiaoqi,Zheng, Zhennan,Zhang, Cheng,et al. Coherent Detection-Based Automatic Bias Control of MachZehnder Modulators for Various Modulation Formats[J]. journal of lightwave technology,2014.
APA	Zhu, Xiaoqi,Zheng, Zhennan,Zhang, Cheng,Zhu, Lixin,Tao, Zhenning,&Chen, Zhangyuan.(2014).Coherent Detection-Based Automatic Bias Control of MachZehnder Modulators for Various Modulation Formats.journal of lightwave technology.
MLA	Zhu, Xiaoqi,et al."Coherent Detection-Based Automatic Bias Control of MachZehnder Modulators for Various Modulation Formats".journal of lightwave technology (2014).