All Optical Wavelength Conversion Based on Cross Polarization Modulation in Semiconductor Optical Amplifier

• Published in: Journal of lightwave technology 2013-06, Vol.31 (11), p.1783-1792
• Main Authors: Singh, S., Xiaohua Ye, Kaler, R. S.
• Format: Article
• Language: English
• Subjects: All optical circuits; Applied sciences; BER; Circuit properties; Coding, codes; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Information, signal and communications theory; Integrated optics. Optical fibers and wave guides; Modulation; Nonlinear optics; Optical and optoelectronic circuits; Optical filters; Optical polarization; Optical pumping; Optical wavelength conversion; quality; Semiconductor optical amplifiers; Signal and communications theory; SOA; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); XPolM
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.2013.2252326

The paper presents a novel inherent polarization sensitivity technique using SOA to perform cross polarization modulation. The wavelength conversion takes place due to nonlinear rotation in state of polarization at the output of the SOA. Nonlinear polarization rotation is enhanced by optimizing the various parameters of SOA. The conversion is achieved with wavelength separation of 1 nm for up and down conversion with non-return to zero input signals at bit rate of 10 Gb/s. It is predicted that conversion efficiency becomes almost same for both up and down conversions at high value of pump signal power. Improved extinction ratio is observed for all optical wavelength conversion.