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Tomkos, L. Kazovsky, K. Kitaiama (2012) Next-Generation Optical Access Networks: Dynamic Bandwidth Allocation, Resource Use Optimization, and QoS Improvement. Guest Editorial IEEE Networks, 26, 2, 4-6.

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• TITLE: DP-DQPSK Optical Access System Integrated with Fiber and Free-Space Downlink for High Spectral Efficiency Application

  AUTHORS: Yufeng Shao, Fuping Chen, Luo Chen, Shilu Shen, Anrong Wang, Yingxiang Luo, Zefu Tan

  KEYWORDS: Free-Space Optical Communication, Optical Access System, Phase Modulation, Spectral Efficiency

  JOURNAL NAME: Optics and Photonics Journal, Vol.6 No.8B, August 25, 2016

  ABSTRACT: In this letter, we present the generation, the balanced detection, and the transmission performance evaluation of dual polarization differential quadrature phase shift keying (DP-DQPSK) signals in optical access system integrated with fiber and free-space downlink. Polarization-multip- lexed (POLMUX) technique is introduced in the system for high spectral efficiency access utilization. 10 Gb/s DP-DQPSK downlink signals are successfully transmitted over 50 km SMF-28 and a 800 m wireless optical channel under the bad weather condition, such as fog and haze. The results show that the potentiality of DP-DQPSK optical access system is integrated with fiber and free- space downlink for providing flexible user access with high bandwidth efficiency.