Operating Vector Solitons with Chirped Sech Pulse Shapes

Yan Zhou,Keyun Zhang,Guoying Zhao,Yongzheng Fang,Meisong Liao

doi:10.3390/photonics9030143

Abstract

In this paper, we report the theoretical results about operating vector solitons with chirped sech pulse shapes. In the operation, the shapes of temporal pulses and corresponding optical spectra in orthogonal directions will change, which are based on soliton parameters. When input orthogonal pulses have the same central wavelength of 1064 nm, the shift from the central wavelength always occurs for orthogonal pulses. When input orthogonal pulses have different central wavelengths of 1063 nm and 1065 nm, output pulse shapes and optical spectra with obvious multiple peak/dip structures can be achieved in orthogonal directions. Our theoretical results are meaningful for the study of vector soliton dynamics and have potential applications in optical communication and optical sensing.

Highlights

Optical soliton in optical fiber has already been studied by many researchers during past decades [1–9]
The orthogonal components of vector soliton can be uncoupled by a polarization beam splitter (PBS) and the real-time dynamics of orthogonal modes can be studied separately [33,34]
We further explore the operation of vector solitons with chirped sech pulse shapes, which have not been reported until now

Summary

Introduction

Optical soliton in optical fiber has already been studied by many researchers during past decades [1–9]. For the case of long-distance optical fiber communication, the optical soliton pulse will suffer from polarization mode dispersion, and the transmitted signal will be distorted. Under this background, the concept of vector soliton was proposed and achieved great developments in theoretical and experimental aspects [16–18]. Passively mode-locked fiber laser is often built to study the dynamic properties of vector optical soliton. Our group theoretically studied the operation of polarization- and group-velocity-locked vector solitons with different pulse shapes, such as super-Gaussian pulse shapes [36] and bright-dark pulse pairs [37]. Our simulation results are useful for the study of vector soliton dynamics and have potential applications in long-distance optical fiber communication and optical fiber sensing

Model Description

Equal Central Wavelength

Conclusions