A novel colorless WDM passive optical network delivering up/downstream signals and video broadcast signal simultaneously
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- 作者：Xuejiao Ma ; Chaoqin Gan ; cqgan@shu.edu.cn ; Shiqi Deng
- 关键词：Wavelength division multiplexing passive optical network ; Subcarrier modulation ; Differential-phase-shift-keying ; Re-modulation
- 刊名：Optical Switching and Networking
- 出版年：2013
- 出版时间：January, 2013
- 年：2013
- 卷：10
- 期：1
- 页码：100-105
- 全文大小：936 K
文摘
A colorless wavelength division multiplexing passive optical network delivering up/downstream signals and video broadcast signal (VBS) simultaneously is presented in this paper. In this scheme, subcarrier modulation technique is adopted at the optical line terminal. Here un-modulated double-sideband subcarriers and optical carriers operating in different wavelength bands are used for downstream and video broadcast signal transmission, respectively. The use of differential-phase-shift-keying (DPSK) modulation for downstream transmission enables effective upstream transmission by direct re-modulation. The simulation results demonstrated with 2.5-Gb/s up/downstream signals and video broadcasting signal show this approach could work very well.