Power penalty induced by Rayleigh backscattering in a bidirectional wavelength-reuse lightwave system

Author

Shien-Kuei Liaw ; Sohn-Ling Tzeng ; Yu-Ju Hung

Author_Institution

Dept. of Electron. Eng., Nat. Taiwan Inst. of Technol., Taipei, Taiwan

fYear

2001

fDate

11-11 May 2001

Firstpage

475

Lastpage

476

Abstract

Summary form only given. Compared with unidirectional transmission, bidirectional transmission reduces the required number of fibers. The efficiency of bandwidth usage can be further doubly by using the identical wavelength (i.e. wavelength reuse) from both directions. Because the identical wavelengths are reused in the reverse direction, the signals generate from the counter-propagating signals is difficult to be eliminated by filtering. This noise degrades the signal-to-noise ratio (SNR) and system performance. We present the experimental setup to measure the BER performance of a bidirectional wavelength-reuse system. One distributed feedback (DFB) laser was externally modulated by 10 Gbit/s signal.

Keywords

Rayleigh scattering; backscatter; distributed feedback lasers; error statistics; laser feedback; optical circulators; optical crosstalk; optical fibre communication; optical fibres; optical modulation; optical noise; 10 Gbit/s; BER performance; DFB laser; Rayleigh backscattering; bandwidth usage; bidirectional transmission; bidirectional wavelength-reuse lightwave system; bidirectional wavelength-reuse system; counter-propagating signals; distributed feedback laser; externally modulation; filtering; identical wavelengths; power penalty; reverse direction; signal-to-noise ratio; signal-to-noise ratio degradation; system performance; unidirectional transmission; wavelength reuse; Backscatter; Bandwidth; Bit error rate; Degradation; Distributed feedback devices; Filtering; Signal generators; Signal to noise ratio; System performance; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-662-1

Type

conf

DOI

10.1109/CLEO.2001.948062

Filename

948062