Bidirectional 50 Gb/s/λ WDM-PON based on optical intensity modulation and direct detection
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- 作者：Zhiguo Zhang ; Bingbing Zhang ; Cheng Ju ; Xue Chen
- 关键词：WDM ; PON ; Optical intensity modulation ; Direct detection ; Power fading elimination ; Inter ; symbol interference mitigation ; Wavelength management method
- 刊名：Optical and Quantum Electronics
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：48
- 期：10
- 全文大小：1,688 KB
- 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
- 卷排序：48
文摘
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.