Stable transmission characteristics of double-hump solitons for the coupled Manakov equations in fiber lasers

Guoli Ma,Anjan Biswas,Weitian Yu,Qin Zhou,Wenjun Liu

doi:10.1007/s11071-021-06919-w

Abstract

The fiber laser has become an ideal ultrashort pulse source because of its cheap structure, high integration, convenient and controllable output direction, which greatly promotes the development and application of ultrafast optics. This paper mainly focuses on the control and amplification of double-hump solitons in fiber lasers theoretically. The bilinear forms and soliton solutions of the coupled Manakov equations are presented, and the transmission of double-hump solitons is discussed. The factors affecting the stable transmission of double-hump solitons are analyzed. The relevant conclusions have important guiding significance for understanding the generation of stable double-hump solitons in fiber lasers.

Highlights

Optical soliton is one of the most studied form of solitons [1]
The advantage of optical soliton communication is all-optical communication, and the signal does not need to be transferred to the electrical field for processing
Double-hump soliton transmission in fiber lasers is expressed as the variable coefficient coupled Manakov equations [19], iux + β2(x)utt + 2γ(x) |u|2 + |v|2 u = 0, (1)

Summary

Introduction

Optical soliton is one of the most studied form of solitons [1]. It can be conformed to the characteristics predicted by soliton theory [2,3,4], and can be used as an optical information carrier for communication systems [5,6,7]. The advantage of optical soliton communication is that it does not change its shape when it interacts with other pulses [12, 13]. Dispersion and nonlinearity play a key role in the properties of soliton fiber lasers [14]. The effects of dispersion and nonlinearity on double-hump solitons will be investigated analytically. Double-hump soliton transmission in fiber lasers is expressed as the variable coefficient coupled Manakov equations [19], iux + β2(x)utt + 2γ(x) |u|2 + |v|2 u = 0, (1). The stable transmission characteristics of double-hump solitons in fiber lasers have not been reported before, which plays a key role in signal transmission and amplification in communication systems. The generation and amplification of double-hump solitons will be investigated in the fiber lasers theoretically.

Double-hump soliton solutions

Discussion

Conclusion