A WDM Passive Optical Network With Polarization-Assisted Multicast Overlay Control

• Published in: IEEE photonics technology letters Vol. 21; no. 16; pp. 1133 - 1135
• Main Authors: Yang Qiu, Yang Qiu, Chun-Kit Chan, Chun-Kit Chan
• Format: Journal Article
• Language: English
• Published: New York IEEE 15.08.2009; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Amplitude shift keying; Amplitude-shift keying (ASK); differential phase-shift keying (DPSK); Differential quadrature phase shift keying; Keying; Light sources; Multicast; Optical communication; Optical control; Optical modulation; Optical network units; Optical polarization; Optical transmitters; orthogonal modulation; passive optical network (PON); Passive optical networks; Photonics; Terminals; Upstream; Wavelength division multiplexing; wavelength-division multiplexing (WDM); WDM networks
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2009.2023227

We propose a novel wavelength-division-multiplexed passive optical network which supports simultaneous delivery of 10-Gb/s point-to-point downstream and upstream data as well as 10-Gb/s downstream multicast data. The multicast overlay control is achieved by a polarization-assisted scheme at the optical line terminal (OLT). A separate lightpath is provided for the downstream multicast differential phase-shift keying (DPSK) data without additional light sources. The upstream amplitude-shift keying signal at the optical network unit is superimposed onto the received multicast DPSK signal before being transmitted back to the OLT.