A Wavelength-Division-Multiplexed Passive Optical Network With Simultaneous Centralized Light Source and Broadcast Capability

Author

Zhang, Fangzheng ; Fu, Songnian ; Wu, Jian ; Xu, Kun ; Lin, Jintong ; Shum, Ping

Author_Institution

Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

Volume

2

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

445

Lastpage

453

Abstract

We propose and experimentally demonstrate a wavelength-division-multiplexed (WDM) passive optical network (PON) architecture with simultaneous centralized light source and broadcast capability. The proposed WDM-PON supports simultaneous delivery of 10-Gb/s broadcast on-off-keying (OOK) signals and 10-Gb/s point-to-point (P2P) differential-phase-shift-keying (DPSK) signals. The broadcast OOK signals are obtained by modulating a part of the P2P DPSK signals to enhance the wavelength utilization efficiency. Then, the two kinds of signals are transmitted to the optical network unit (ONU) through different fiber links, and this configuration guarantees the good transmission performance. At each ONU, a portion of the P2P DPSK signal provides the seeding source for remodulating the upstream 10-Gb/s OOK signal, which avoids the cost of a wavelength-specific laser at each ONU. The performance of the proposed WDM-PON with a symmetrical capacity is comprehensively investigated through both simulation and experiment. The results verify that the proposed WDM-PON scheme is a good candidate to provide broadcast service through the WDM-PON infrastructure.

Keywords

amplitude shift keying; broadcasting; differential phase shift keying; electro-optical modulation; light sources; optical fibre networks; optical links; optical transmitters; passive networks; phase modulation; wavelength division multiplexing; DPSK signals; OOK signals; WDM-PON; bit rate 10 Gbit/s; broadcast capability; broadcast on-off-keying signals; fiber links; point-to-point differential-phase-shift-keying signals; point-to-point transmission; remodulation; seeding source; simultaneous centralized light source; wavelength utilization efficiency; wavelength-division-multiplexed passive optical network; Broadcasting; Costs; Differential quadrature phase shift keying; Fiber lasers; Light sources; Optical fiber networks; Optical network units; Passive optical networks; WDM networks; Wavelength division multiplexing; Wavelength-division-multiplexed passive optical network (WDM-PON); all-optical broadcast; centralized light source; differential phase-shift keying (DPSK); point-to-point transmission; wavelength reuse;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2010.2049737

Filename

5460966