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Method for generating weak-light low-speed stable soliton

An optical soliton and stable technology, applied in the field of optical communication, can solve problems such as limiting and stabilizing optical solitons, and achieve the effects of low power generation, simple and easy-to-understand methods, and convenient implementation.

Active Publication Date: 2021-03-19
HUBEI UNIV OF SCI & TECH
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Problems solved by technology

In addition, the nonlinear mechanism is strongly dependent on nonlinear materials, and there are not many nonlinear materials that can be used in practice. This dependence also greatly limits the generation of stable optical solitons.

Method used

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  • Method for generating weak-light low-speed stable soliton
  • Method for generating weak-light low-speed stable soliton
  • Method for generating weak-light low-speed stable soliton

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Embodiment Construction

[0022] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0023] In order to facilitate the description of the method for producing weak-light and low-speed stable optical solitons proposed by the present invention, this embodiment introduces a four-level inverted Y-type Rydberg cold atom system with a widened lifetime such as figure 1 As shown, this embodiment chooses 88 Sr as the life-broadened four-level inverted Y-type Rydberg cold atom system, select 88 The four energy levels of the Sr atom are |1>=|5S 1 / 2 ,F=1>,|2>=|5S 1 / 2 ,F=2>,|3>=|5P 3 / 2 ,F=3>, and |4>=|60S 1 / 2 >. A bunch of rabbi frequency A S -1 Th...

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Abstract

The invention discloses a method for generating weak-light low-speed stable soliton, and the method comprises the steps: enabling incoherent pump light gamma 21 to act on a four-energy-level invertedY-shaped Rydberg cold atom system with a prolonged service life, eliminating the absorption of a resonance medium for incident light with weak light intensity through the interference among atom quantum states induced by control light so as to obtain a large nonlinear effect and obtain the stable PT symmetrical soliton. The method is simple, easy to understand, convenient to implement and high inpracticability, relevant parameters can be adjusted according to actual conditions, and powerful support is provided for deep application and development of the soliton in the technical field of optical communication.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and relates to a method for generating weak-light and low-speed stable optical solitons, in particular to a method for producing weak-light and low-speed stable PT symmetrical optical solitons by using Rydberg cold atoms EIT. Background technique [0002] Optical solitons / photobullets (light bullets, LBs) are a special form of ultrashort optical pulses, which are formed by the combined effects of group velocity dispersion and self-phase modulation in optical media. Because optical solitons do not diffuse in space and time, they can keep time-domain waveforms and spectral shapes unchanged during propagation, and have the advantages of large transmission capacity, low bit error rate, and strong anti-interference ability. Wide application prospects. Due to the physical characteristics of optical solitons and their technical applications, many researchers have carried out theoretical a...

Claims

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Application Information

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IPC IPC(8): H04B10/508
CPCH04B10/508
Inventor 徐四六王可畏薛丽
Owner HUBEI UNIV OF SCI & TECH
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