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Bidirectional 50 Gb/s/λ WDM-PON based on optical intensity modulation and direct detection

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Abstract

We experimentally demonstrate an optical intensity modulation transmitter with a half-cycle 32 QAM Nyquist subcarrier modulation and direct detection receiver-based channel-reuse wavelength-division-multiplexing passive optical network. Chromatic dispersion-induced power fading in the direct detection system is avoided with fiber Bragg grating filter-based vestigial-sideband filtering. The inter-symbol interference is mitigated with a digital signal processing-based overlap frequency-domain equalizer and iterative distortion-cancellation technique. A frequency division multiplexing-based wavelength management method is employed for the tunable laser used in a colorless optical network unit to achieve a bidirectional 50 Gb/s/λ transmission over a 40 km-long standard single-mode-fiber on a 100 GHz WDM grid. The transmission performance is also measured with different central wavelength shifts between upstream and downstream in the channel-reuse system.

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Acknowledgments

This study is supported by National Natural Science Foundation of China (No. 61302079).

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Authors and Affiliations

  1. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China

    Zhiguo Zhang, Bingbing Zhang, Cheng Ju & Xue Chen

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  1. Zhiguo Zhang
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  2. Bingbing Zhang
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  3. Cheng Ju
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  4. Xue Chen
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Correspondence to Zhiguo Zhang.

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Zhang, Z., Zhang, B., Ju, C. et al. Bidirectional 50 Gb/s/λ WDM-PON based on optical intensity modulation and direct detection. Opt Quant Electron 48, 476 (2016). https://doi.org/10.1007/s11082-016-0751-3

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  • DOI: https://doi.org/10.1007/s11082-016-0751-3

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