A Single Slow-Light Element for Independent Delay Control and Synchronization on Multiple Gb/s Data Channels

Author

Zhang, Bo ; Yan, L.-S. ; Yang, Jeng-Yuan ; Fazal, Irfan ; Willner, Alan E.

Author_Institution

Univ. of Southern California, Los Angeles

Volume

19

Issue

14

fYear

2007

fDate

7/15/2007 12:00:00 AM

Firstpage

1081

Lastpage

1083

Abstract

Independent delay control and bit-level synchronization of multiple data channels are demonstrated through a single stimulated Brillouin scattering (SBS)-based slow-light element. Multiple, independently tunable SBS gain resonances are generated in a single piece of highly nonlinear fiber from multiple SBS pumps. Each pump is broadened by noise modulating the laser current so that the bandwidth is compatible with high-speed gigabit-per-second data signals. Bit-level synchronization on three 2.5-Gb/s nonreturn-to-zero on-off keying channels shows independent and continuous delay control of up to 112ps. Bit-error-rate measurement on the synchronized channels shows 3.5-dB power penalty. Effect of one channel on the other channel´s delay is also investigated and the reason is attributed to the nonlinear crosstalk.

Keywords

amplitude shift keying; data communication; delays; error statistics; optical communication equipment; optical crosstalk; optical fibre communication; stimulated Brillouin scattering; synchronisation; telecommunication channels; SBS pumps; bit error rate; bit-level synchronization; independent delay control; multiple data channels; nonlinear crosstalk; nonlinear fiber; on-off keying; single slow-light element; stimulated Brillouin scattering; Bandwidth; Brillouin scattering; Crosstalk; Delay; Fiber lasers; Laser noise; Power measurement; Pump lasers; Resonance; Tunable circuits and devices; Multichannel synchronization; nonlinear fiber optics; slow-light; stimulated Brillouin scattering (SBS);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.899853

Filename

4252152