25-GHz-Spaced DWDM-PON With Mitigated Rayleigh Backscattering and Back-Reflection Effects

Author

Zhao Zhou ; Shilin Xiao ; Tao Qi ; Pingqing Li ; Meihua Bi ; Weisheng Hu

Author_Institution

Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China

Volume

5

Issue

4

fYear

2013

fDate

Aug. 2013

Firstpage

7901407

Lastpage

7901407

Abstract

A novel 25-GHz-spaced dense wavelength-division multiplexing passive optical network (DWDM-PON) is proposed to improve the utilization of wavelength resource and mitigate the Rayleigh backscattering (RB) and back-reflection effects. A colorless optical network unit (ONU) is realized by remodulating the downstream (DS) signal via a gain-saturated reflective semiconductor optical amplifier (RSOA). Due to the simple interconnecting architecture at the remote node (RN), the DS and upstream (US) signals in each feed fiber (FF) are carried on different channels. Therefore, the RB and back-reflection effects are significantly reduced. The feasibility and merits of the proposed system are experimentally demonstrated with the error-free transmission of 10-Gb/s DS and 1.25-Gb/s US signals over a 25-km single-mode fiber.

Keywords

Rayleigh scattering; backscatter; channel spacing; optical communication equipment; optical interconnections; optical modulation; passive optical networks; reflectivity; semiconductor optical amplifiers; wavelength division multiplexing; DWDM-PON; ONU; RSOA; back-reflection effects; bit rate 1.25 Gbit/s; bit rate 10 Gbit/s; colorless optical network unit; dense wavelength-division multiplexing passive optical network; distance 25 km; downstream signal remodulation; error-free transmission; feed fiber; frequency 25 GHz; gain-saturated reflective semiconductor optical amplifier; interconnecting architecture; mitigated Rayleigh backscattering; remote node; single-mode fiber; upstream signals; wavelength resource; Optical attenuators; Optical fibers; Optical network units; Optical receivers; Optical reflection; Optical transmitters; Passive optical networks; Dense wavelength-division multiplexing passive optical network (DWDM-PON); Rayleigh backscattering (RB); reflective semiconductor optical amplifier (RSOA);

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2013.2271717

Filename

6553004