共 30 条
Optical up-conversion for WDM-RoF transmission using multiple optical carrier suppression in OFCG
被引:5
作者:
Zhang, Chan
[1
,2
]
Ning, TiGang
[1
,2
]
Li, Jing
[1
,2
]
Chen, Hongyao
[1
,2
]
Li, Chao
[1
,2
]
Liu, Zhiming
[3
]
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
[3] 41st Inst China Elect Technol Grp Corp, Qingdao 266555, Peoples R China
基金:
中国国家自然科学基金;
北京市自然科学基金;
关键词:
WDM-RoF;
Optical comb;
Up-conversion;
FREQUENCY COMB GENERATION;
OVER-FIBER SYSTEM;
MACH-ZEHNDER MODULATOR;
ACCESS NETWORKS;
LOCKED LASERS;
WAVE;
RADIO;
PON;
SIGNALS;
REUSE;
D O I:
10.1016/j.optlastec.2015.08.014
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
A tunable optical frequency comb generator (OFCG) by cascading an Electro-absorption modulator (EAM) followed by a phase modulator (PM) and an intensity modulator (IM) is proposed for wavelength division multiplexing radio-over-fiber (WDM-RoF) transmission. The generated OFCG serves as the carriers of WDM-RoF system to realize all-optical up-conversion afterwards. In the proposal, each comb line is modulated by the radio-frequency (RF) signal via multiple optical carrier suppression (OCS) after optical comb generation. We have systematically compared the performances of the optical up-conversion based on different modulation schemes. Among three schemes, the OCS modulation scheme shows the highest receiver sensitivity and smallest power penalty over long-distance transmission. What's more, the OCS modulation scheme can be easily implemented with a large number of WDM channels simultaneously without any power saturation or other nonlinear impact. In the numerical simulation, 15 WDM channels each carrying 15 Gb/s x 5 Gb/s baseband signal have been up-converted to 10 GHz simultaneously. This method still provides high performance after 20 km transmission, which shows simple cost-efficient configuration and good performance over long distance delivery. (C) 2015 Published by Elsevier Ltd.
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页码:91 / 97
页数:7
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