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Key Technologies of WDM-PON for Future Converged Optical Broadband Access Networks [Invited]

2009; Volume: 1; Issue: 4 Linguagem: Inglês

10.1364/jocn.1.000c35

1943-0639

Gee‐Kung Chang, Arshad Chowdhury, Zhensheng Jia, Hung‐Chang Chien, Ming-Fang Huang, Jianjun Yu, Georgios Ellinas,

Advanced Optical Network Technologies

The wavelength-division-multiplexed passive optical network (WDM-PON) is considered to be the next evolutionary solution for a simplified and future-proofed access system that can accommodate exponential traffic growth and bandwidth-hungry new applications. WDM-PON mitigates the complicated time-sharing and power budget issues in time-division-multiplexed PON (TDM-PON) by providing virtual point-to-point optical connectivity to multiple end users through a dedicated pair of wavelengths. There are a few hurdles to overcome before WDM-PON sees widespread deployment. Several key enabling technologies for converged WDM-PON systems are demonstrated, including the techniques for longer reach, higher data rate, and higher spectral efficiency. The cost-efficient architectures are designed for single-source systems and resilient protection for traffic restoration. We also develop the integrated schemes with radio-over-fiber (RoF)-based optical-wireless access systems to serve both fixed and mobile users in the converged optical platform.