A full-duplex WDM-RoF system based on tunable optical frequency comb generator

被引：29
作者：
Zhang, Chan [1 ,2 ]
Ning, TiGang [1 ,2 ]
Li, Jing [1 ,2 ]
Pei, Li [1 ,2 ]
Li, Chao [1 ,2 ]
Ma, Shaoshuo [1 ,2 ]
机构：
[1] Beijing Jiaotong Univ, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China
[2] Beijing Jiaotong Univ, Inst Lightwave Technol, Beijing 100044, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2015年 / 344卷
基金：
中国国家自然科学基金;
关键词：
WDM-RoF; Optical comb; Full-duplex; Optical-wireless; PHASE MODULATORS; NETWORKS; PON;
D O I：
10.1016/j.optcom.2015.01.038
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A prototype of full-duplex wavelength-division-multiplexing-based radio-over-fiber (WDM-RoF) system using a single continuous wave (CW) laser at central station (CS) is proposed and investigated. In the proposal, the tunable optical frequency comb (OFC) generator is performed by cascading an electro-absorption modulator (EAM), a phase modulator (PM) and a Mach-Zehnder intensity modulator (IM). Then the proposed OFC is used as the source of WDM-RoF network. The base station (BS) is simplified by using central carrier along with downlink multi-frequency millimeter-wave signals (MMWs). In the scheme, we obtain 21 comb lines within 0.2 dB power deviation with an interval about 10 GHz. Then we apply it to a bidirectional 1:7 WDM-RoF cellular network. For the downlink, three MMWs with frequencies of 40 GHz, 60 GHz and 80 GHz are obtained. For the uplink, 7 WDM channels carrying upstream signal are converted simultaneously. Both down and uplink delivery over 20 km transmission with less than 1 dB power penalty, which shows high spectral-efficiency and good performance over long-distance delivery. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：65 / 70
页数：6
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