Atmospheric transmission characters of broadband carriers based on supercontinuum under typical pump conditions

Abstract

In this letter, the relationship between the transmission quality and the pump wavelength are experimentally studied in a wide-spectrum free-space optical communication system. We used a Raman gain soliton compression structure to generate narrow pulses with different center wavelengths and a pulse width of 2.9ps. A highly nonlinear optical fiber is pumped by the pulse laser with different powers, and then, the supercontinuum can be generated. The broadband laser is modulated by data sequence after filtering and experimentally transmit in a simulated atmospheric turbulence channel. The experimental received results show that the sensitivity can reach -34.37dBm with 30dBm pump power as 1565 nm, and 10.25dB sensitivity loss can be detected by using a non-optimal pumping wavelength and power.