Nonlinear Fiber System for Shot-noise Limited Intensity Noise Suppression and Amplification
Abstract
We propose a nonlinear fiber system for shot-noise limited, all-optical intensity-noise reduction and signal amplification. The mechanism is based on the accumulation of different nonlinear phase shifts between orthogonal polarization modes in a polarization-maintaining fiber amplifier in combination with an implemented sinusoidal transmission-function. The resulting correlation between the input intensity-fluctuations and the system transmission enables tunable intensity noise reduction of the input pulse train. In the experiment, the noise spectral density of a mode-locked oscillator is suppressed by up to ~20 dB to the theoretical shot-noise limit of the measurement at -151.3 dBc/Hz with simultaneous pulse amplification of 13.5dB.
Keywords
Cite
@article{arxiv.2105.04182,
title = {Nonlinear Fiber System for Shot-noise Limited Intensity Noise Suppression and Amplification},
author = {Marvin Edelmann and Yi Hua and Kemal Şafak and Franz X. Kärtner},
journal= {arXiv preprint arXiv:2105.04182},
year = {2021}
}
Comments
4 pages, 6 pictures