Dual-beam optically injected semiconductor laser for radio-over-fiber downlink transmission with tunable microwave subcarrier frequency

被引:6
|
作者
Liu, Yuping [1 ]
Qi, Xiaoqiong [1 ]
Xie, Liang [1 ]
机构
[1] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China
基金
中国国家自然科学基金;
关键词
Downlink transmission; Microwave subcarrier; Radio-over-fiber; Dual-beam injection; Period-one; SSB; PERIOD-ONE OSCILLATION; PHOTONIC GENERATION; MODULATION; SIGNALS;
D O I
10.1016/j.optcom.2012.11.008
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We propose a downlink broadcast transmission scheme of radio-over-fiber (RoF) system based on period-one (P1) dynamic of dual-beam optically injected semiconductor laser with tunable microwave subcarrier frequency. The transmission performance of 2.5 Gb/s data in a 60 GHz RoF system is demonstrated through numerical simulations. It is found that the proposed transmission scheme can easily generate a single-sideband (SSB) optical modulation by adjusting the injection strength level of two master lasers (ML), which is favorable to reduce the fading effect due to chromatic dispersion. Furthermore, influences of the pulse amplitudes and duty cycles of the downlink data on the transmission properties are investigated. It is observed that the oscillation of the relative power at the base station induced by fiber dispersion does not vary apparently with the modulation parameters. Once the SSB spectrum is generated by dual-beam optical injection, the downlink transmission performance of the proposed RoF system keeps good stability and reliability. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:117 / 122
页数:6
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