Tunable All-Optical Wavelength Conversion of 160-Gb/s RZ Optical Signals by Cascaded SFG-DFG Generation in PPLN Waveguide

Author

Furukawa, Hideaki ; Nirmalathas, Ampalavanapillai ; Wada, Naoya ; Shinada, Satoshi ; Tsuboya, Hiroshi ; Miyazaki, Tetsuya

Author_Institution

Nat. Inst. of Inf. & Commun. Technol., Tokyo

Volume

19

Issue

6

fYear

2007

fDate

3/15/2007 12:00:00 AM

Firstpage

384

Lastpage

386

Abstract

We report, for the first time, tunable all-optical wavelength conversion of 160-Gb/s return-to-zero (RZ) optical signals based on cascaded sum- and difference-frequency generation in a periodically poled LiNbO₃ waveguide. The distorted signals due to limited phase-matching bandwidth during conversion were compensated by spectral reshaping. We achieved error-free tunable wavelength conversion with a bit-error rate of less than 10^-9 for 160-Gb/s RZ signals in a 23-nm tuning range over the C-band

Keywords

error statistics; lithium compounds; optical communication equipment; optical distortion; optical fibre communication; optical frequency conversion; optical phase matching; optical waveguides; optical wavelength conversion; spectral line breadth; 160 Gbit/s; 4 to 8 GHz; C-band; LiNbO₃; LiNbO₃ waveguide; all-optical wavelength conversion; bit-error rate; cascaded difference-frequency generation; cascaded sum-frequency generation; distorted signals; error-free wavelength conversion; limited phase-matching bandwidth; optical waveguide; periodically-poled lithium niobate; return-to-zero optical signals; spectral reshaping; tunable wavelength conversion; Fiber nonlinear optics; High speed optical techniques; Laser excitation; Nonlinear optics; Optical distortion; Optical mixing; Optical pumping; Optical waveguides; Optical wavelength conversion; Signal generators; 160-Gb/s return-to-zero (RZ) optical signal; cascaded sum- and difference-frequency generation (cSFG-DFG); periodically poled lithium niobate (PPLN); quasi-phase matching (QPM); spectral-reshaping; wavelength conversion;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.891951

Filename

4116758