DP-DQPSK Optical Access System Integrated with Fiber and Free-Space Downlink for High Spectral Efficiency Application - Optics and Photonics Journal

OPJ > Vol.6 No.8, August 2016

DP-DQPSK Optical Access System Integrated with Fiber and Free-Space Downlink for High Spectral Efficiency Application ()

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DOI: 10.4236/opj.2016.68B018 1,495 Downloads 2,816 Views Citations

Author(s)

Yufeng Shao^*, Fuping Chen, Luo Chen, Shilu Shen, Anrong Wang, Yingxiang Luo, Zefu Tan

Affiliation(s)

College of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing, China.

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.

KEYWORDS

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

Share and Cite:

Shao, Y. , Chen, F. , Chen, L. , Shen, S. , Wang, A. , Luo, Y. and Tan, Z. (2016) DP-DQPSK Optical Access System Integrated with Fiber and Free-Space Downlink for High Spectral Efficiency Application. Optics and Photonics Journal, 6, 108-113. doi: 10.4236/opj.2016.68B018.

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