Novel 64×2.5 Gb/s all-optical OFDM symbol generator based on triangle waveform driving-LiNbO_3 modulators |
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基金项目: | This work was supported by the National "973" Program of China (Nos. 2010CB328300 and 2010CB328303), the National Natural Science Foundation of China (No. 60772013), the National "863" Program of China (No. 2009AA03Z408), and the Open Fund of Key Laboratory of Optical Communication and Lightwave Technologies Beijing University of Posts and Telecommunications, Ministry of Education, China. |
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摘 要: | <正>We propose a novel and simple all-optical 160-Gb/s orthogonal frequency division multiplexing(OFDM) symbol generator which is based on discrete triangle waveform driving-LiNbO_3 modulators to realize large-range linear optical shift.The entire system needs 64 discrete modulators:at the transmitter,a 2.5-Gb/s optical duobinary(ODB) modulator for data modulation and a 2.5-Gb/s triangle waveform driving-LiNbO_3 phase modulator for phase shift to generate each subcarrier;and at the receiver,a 2.5-GHz optical band pass filter(OBPF) using Faraday anomalous dispersion optical effect to separate them.Excellent bit error rate(BER) is observed after 1060 km of transmission without any dispersion compensation.
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关 键 词: | OFDM 调制器 Gb 基础 全光 三角波 法拉第反常色散 带通滤波器 |
Novel 64×2.5 Gb/s all-optical OFDM symbol generator based on triangle waveform driving-LiNbO_3 modulators |
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Authors: | Yuan Li Wei Li Xiaojun Liang Kecheng Yang Yaojun Qiao |
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Institution: | [1]Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China [2]Department of Computer Science and Technology, Central China Normal University, Wuhan 430079, China [3]Key Laboratory of Information Photonics and Optical Communications, Ministry of Education,Beijing University of Posts and Telecommunications, Beijing 100876, China |
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