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首页> 外文会议>12th Education and Training in Optics and Photonics Conference >Web based interactive educational software introducing semiconductor laser dynamics: Sound Of Lasers (SOL)
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Web based interactive educational software introducing semiconductor laser dynamics: Sound Of Lasers (SOL)

机译：基于网络的交互式教育软件，介绍半导体激光动力学：激光之声（SOL）

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摘要

In this work, educational software for intuitive understanding of the basic dynamic processes of semiconductor lasers is presented. The proposed tool is addressed to the students of optical communication courses, encouraging self consolidation of the subjects learned in lectures. The semiconductor laser model is based on the well known rate equations for the carrier density, photon density and optical phase. The direct modulation of the laser is considered with input parameters which can be selected by the user. Different options for the waveform, amplitude and frequency of the injected current are available, together with the bias point. Simulation results are plotted for carrier density and output power versus time. Instantaneous frequency variations of the laser output are numerically shifted to the audible frequency range and sent to the computer loudspeakers. This results in an intuitive description of the "chirp" phenomenon due to amplitude-phase coupling, typical of directly modulated semiconductor lasers. In this way, the student can actually listen to the time resolved spectral content of the laser output. By changing the laser parameters and/or the modulation parameters, consequent variation of the laser output can be appreciated in intuitive manner. The proposed educational tool has been previously implemented by the same authors with locally executable software. In the present manuscript, we extend our previous work to a web based platform, offering improved distribution and allowing its use to the wide audience of the web.
机译：在这项工作中，提供了直观了解半导体激光器基本动态过程的教学软件。拟议的工具面向光通信课程的学生，鼓励他们对在讲座中学习的学科进行自我巩固。半导体激光器模型基于载流子密度，光子密度和光学相位的众所周知的速率方程。通过用户可以选择的输入参数来考虑激光的直接调制。注入电流的波形，幅度和频率以及偏置点都有不同的选择。针对载波密度和输出功率与时间的关系绘制了仿真结果。激光输出的瞬时频率变化在数值上移至可听频率范围，并发送到计算机扬声器。由于直角调制半导体激光器的典型特征是幅度相位耦合，因此可以直观地描述“ chi”现象。通过这种方式，学生实际上可以收听激光输出的时间分辨光谱内容。通过改变激光参数和/或调制参数，可以以直观的方式理解激光输出的相应变化。所提议的教育工具先前已经由同一作者使用本地可执行软件来实现。在本手稿中，我们将以前的工作扩展到基于Web的平台上，从而提供了更好的分发方式，并允许其在网络上广泛使用。

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