Title :
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
fDate :
3/15/2007 12:00:00 AM
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.891951
