Mitigation of nonlinear impact on optical fiber

Abstract

Laser is one of the light sources that transmits wavelength with frequency, phase, and polarization parameters. The response of each dielectric material to light created nonlinear in strong electromagnetic field. Nonlinearity occurs within the optical fiber with high intensity of light at the core with long span. The focus of this paper was to reduce the behavior of nonlinearity SPM (Self Phase Modulation) and GVD (Group Velocity Dispersion) characteristic on optical fiber transmission using frequency dithering technique. This paper showed signal characteristic after passing dithering system. By investigating this, we expected to mitigate and reduce nonlinearity on optical medium transmission for minimum OLP (Optical Launch Power) with varied linewidth. The peak of maximum power after the technique was applied was −30 dBm with respective SNR (Signal to Noise Ratio) and EVM (Error-Vector-Magnitude) value were 65 dB and 0.125 % on linewidth of 0.15 MHz.