Fiber Optic Subcarrier Transmission Systems Using Coherence Multiplexing Techniques for Broad-Band Distribution Networks
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概要
- 論文の詳細を見る
Fiber optic subcarrier transmission system using coherence multiplexing techniques for broad-band distribution networks is proposed. This system makes it possible to improve the laser linewidth requirement and also to eliminate the effect of intermodulation distortion (IMD) which is serious problem in subcarrier multiplexed (SCM) system. In the proposed system, the frequency difference, f_o, between the reference light and the signal light makes it possible to generate the broadband FM signal after photodetecting. Thus, an increase in the modulation index provides a corresponding increase in receiver sensitivity. We analyze the fundamental performance of the proposed system and derive the signal-to-noise ratio (SNR) at the output of FM demodulator by taking the threshold effect and spike noise into account. The proposed system can achieve the total capacity in excess of 10 GHz, and thus it is attractive for multichannel broad-band distribution networks.
- 社団法人電子情報通信学会の論文
- 1997-07-25
著者
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Sasase Iwao
Faculty Of Science And Technology Keio University
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Uehara Hideyuki
Faculty Of Engineering Shibaura Institute Of Technology
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Uehara Hideyuki
Faculty Of Science And Technology Keio University
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Yokoyama Mitsuo
Department Of Information And Computer Sciences Toyohashi University Of Technology
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Yokoyama Mitsuo
Department Of Information Amp Computer Sciences Toyohashi University Of Technology
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Yokoyama Mitsuo
Department Of Immunology And The Third Department Of Internal Medicine Kurume University School Of M
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