Hybrid WDM and optical CDMA implemented with M-sequence coded waveguide gratings over fiber-to-the-home network

Jen Fa Huang, Yao Tang Chang, Chuan Ching Sue, Che Chih Hsu

研究成果: Conference contribution

4 引文 斯高帕斯(Scopus)

摘要

In the last-mile access network, the hybrid wavelength-division multiplexing and optical code-division multiple-access (WDM/OCDMA) scheme for Ethernet passive optical network (the so-called WDM/OCDMA-EPON) is presented over fiber-to-the-home (FTTH) network. In this study, since the FTTH network is characterized by various distance between optical network unit (ONU) and optical line terminal (OLT), the ONU capacity is divided into several groups. Each ONU group is assigned the maximal-length sequence (M-sequence) code which is popularly used for spectral amplitude coding in OCDMA network. By employing the inherent cyclic and free spectral range (FSR) periodic properties of arrayed-waveguide grating (AWG) router, the AWG coder/decoder (codec) is shared by all the ONUs divided various groups with FSR interval range (Δλf). Hence, the number of AWGs is significantly decreased. In addition, compared to the time division multiplexing and wavelength-division multiplexing EPON schemes, the proposed scheme is more flexible, scalable and confidential. The influence of degree of polarization (DOP) is investigated to evaluate the ratio of signal to phase-noise (SNR PIIN). By setting the depolarizer in front of balanced photo-detector, the system performance of simultaneous active ONUs is improved approximating 20% compared to the average DOP of 0.5.

原文English
主出版物標題2006 International Conference on Communications, Circuits and Systems, ICCCAS, Proceedings - Computer, Optical and Broadband Communications, Computational Intelligence
頁面1860-1864
頁數5
DOIs
出版狀態Published - 2006
事件2006 International Conference on Communications, Circuits and Systems, ICCCAS - Guilin, China
持續時間: 2006 6月 252006 6月 28

出版系列

名字2006 International Conference on Communications, Circuits and Systems, ICCCAS, Proceedings
3

Other

Other2006 International Conference on Communications, Circuits and Systems, ICCCAS
國家/地區China
城市Guilin
期間06-06-2506-06-28

All Science Journal Classification (ASJC) codes

  • 電氣與電子工程

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