IMDD-based bidirectional 20 Gb/s/λ WDM-PON with Nyquist 4 PAM employing Rayleigh backscattering noise detection-based self wavelength management

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• 作者：Zhiguo Zhang ; Na Liu ; Cheng Ju ; Xue Chen
• 关键词：WDM ; PON ; Channel ; reuse ; Nyquist 4 level pulse amplitude modulation ; Intensity modulation ; Direct detection ; Fiber Bragg grating filter ; Self wavelength management
• 刊名：Optical and Quantum Electronics
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：48
• 期：3
• 全文大小：1,189 KB
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• 作者单位：Zhiguo Zhang (1)
  Na Liu (1)
  Cheng Ju (1)
  Xue Chen (1)
  
  1. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China
  
• 刊物主题：Optics, Optoelectronics, Plasmonics and Optical Devices; Electrical Engineering; Characterization and Evaluation of Materials; Computer Communication Networks;
• 出版者：Springer US
• ISSN：1572-817X

文摘

We experimentally demonstrate an optical intensity modulation transmitter with a Nyquist 4 level pulse amplitude modulation and direct detection (DD) receiver-based channel-reuse wavelength-division-multiplexing passive optical network (WDM-PON). A Rayleigh backscattering noise detection-based wavelength management method is employed for the tunable optical transmitter used in colorless optical network unit to achieve bidirectional 20 Gb/s/λ transmission over 45-km standard single-mode-fiber on a 100-GHz WDM grid. Chromatic dispersion induced power fading in the DD system is avoided with fiber Bragg grating filter-based vestigial-sideband filtering. The inter-symbol interference is cancelled with digital signal processing-based overlap frequency-domain equalizer. The transmission performance is also measured with different optical signal to Rayleigh backscattering noise ratio and different central wavelength shift between upstream and downstream in the channel-reuse system.