Polarization-Insensitive Optical Spectral Inversion Using Four-Wave Mixing in a Dispersion-Shifted Fiber

✍ Scribed by Xiupu Zhang

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 332 KB
• Volume: 4
• Category: Article
• ISSN: 1068-5200
• DOI: 10.1006/ofte.1997.0238

✦ Synopsis

A theoretical analysis of spectral inversion using a nondegenerate fourwave mixing wave in a dispersion-shifted fiber with two orthogonally polarized pumps is given. The configuration using two orthogonally polarized pumps was considered as polarization-insensitive spectral inversion. Our analysis will show that the spectral inversion still presents a polarization dependence up to several dB even when polarization-mode dispersion of conversion fiber is ignored. The polarization dependence is mainly induced by two factors: asymmetrical pump depletion and polarization-sensitive crosstalk four-wave mixing waves. The chirp characteristics of spectralinverted signal are also given. The chirp may present a polarization dependence, depending on input signal power.