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Wavelength dependent performance of a wavelength converter based on cross-gain modulation and birefringence of a semiconductor optical amplifier

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4 Author(s)
Hyuek Jae Lee ; Photonic Switching Sect., Electron. & Telecommun. Res. Inst., Daejeon, South Korea ; Manjin Sohn ; Kwangjoon Kim ; Hae Geun Kim

By exploiting pump-induced birefringence in addition to cross-gain modulation, we have obtained improved extinction ratio and reduced optical power penalties for a wavelength converter using a semiconductor optical amplifier. In the probe beam wavelength range of 1528-1566 nm, while extinction ratios and power penalties of a conventional wavelength converter are found to be 4.5-9.2 dB and -0.5-2.1 dB, those of the proposed converter are 6.6-10 dB and -0.7-1.0 dB, respectively. The proposed converter shows better performance for all wavelengths in the range examined for both extinction ratio and power penalty. Especially, more improvements have been obtained in the longer wavelength.

Published in:

IEEE Photonics Technology Letters  (Volume:11 ,  Issue: 2 )