Title :
High Utilization of Wavelengths and Simple Interconnection Between Users in a Protection Scheme for Passive Optical Networks
Author :
Chen, Jiajia ; Wosinska, Lena ; He, Sailing
Author_Institution :
Zhejiang Univ., Hangzhou
fDate :
3/15/2008 12:00:00 AM
Abstract :
A novel protection architecture for passive optical networks (PONs) is presented and evaluated. It is based on the cyclic property of arrayed waveguide gratings (AWGs) and the interconnection between two adjacent optical network units. The proposed scheme is compatible with both wavelength-division-multiplexing (WDM) PONs and hybrid WDM/time-division-multiplexing PONs. It is compared with two existing schemes and shown to have several advantages: 1) 50% less wavelengths is needed; 2) the fiber interconnections are simplified; 3) the connection availability is improved by one order of magnitude.
Keywords :
arrayed waveguide gratings; optical fibre networks; optical interconnections; passive networks; time division multiplexing; wavelength division multiplexing; AWG; WDM-time-division-multiplexing; arrayed waveguide gratings; fiber interconnections; passive optical networks; wavelength-division-multiplexing; Arrayed waveguide gratings; Availability; Costs; Optical fiber networks; Optical network units; Optical waveguides; Passive optical networks; Protection; Time division multiplexing; Wavelength division multiplexing; Hybrid wavelength-division-multiplexing/time-division-multiplexing (WDM/TDM) passive optical network (PON); protection; wavelength-division-multiplexing (WDM) passive optical network (PON);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.915655