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

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6 Author(s)
Furukawa, H. ; Nat. Inst. of Inf. & Commun. Technol., Tokyo ; Nirmalathas, A. ; Wada, N. ; Shinada, S.
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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

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Photonics Technology Letters, IEEE  (Volume:19 ,  Issue: 6 )