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Wavelength Detuning-based Multicast Control Scheme for WDM-PONs with 10-Gb/s Point-to-Point and Multicast Data

Summary

The wavelength-division-multiplexed passive optical network (WDM-PON) is a promising technology for the next-generation access networks. To realize more flexible network functions, several studies [1-15] have been carried out to simultaneously deliver both point-to-point data and broadcast/multicast data to subscribers. The multicast feature is more attractive, compared to broadcast, as it allows selective control of the connection for each user individually. The present invention relates to a novel scheme to realize 10-Gb/s symmetric up- and downlink bit rate with simplified control for multicast service. The multicast data encoded in DPSK format is superimposed onto all point-to-point data channels modulated in inverse return-la-zero (IRZ) format. By adjusting the synchronization of the DPDK/IRZ orthogonal modulation. simple and flexible multicast operation could be realized.

Supplementary Information

Inventor: Xu, Jing | Chen, Lian-kuan | Chan, Chun-kit
Priority Number: US8437637B2
IPC Current: H04J001400
US Class: 398068
Assignee Applicant: The Chinese University of Hong Kong
Title: Methods and systems for multicast control
Usefulness: Methods and systems for multicast control
Summary: System for controlling multicast data e.g. differential phase shift keying (DPSK) multicast data in wavelength division multiplexing-passive optical network (WDM-PON) system.
Novelty: System for controlling differential phase shift keying multicast data in wavelength division multiplexing-passive optical network system, modulates generated optical downstream point-to-point inverse return-to-zero signal

Industry

ICT/Telecom

Sub Category

Telecommunication

Application No.

10/ENG/384

Others

Inventor(s): Professor CHEN Lian Kuan, Department of Information Engineering

Patent Status: Licensing Status: US Patent Pending Available for licensing

Country/Region

Hong Kong