基于直接调制激光器啁啾特性的抛物线波形发生器

IF 2.1 4区物理与天体物理 Q2 OPTICS

Photonics Pub Date : 2023-12-21 DOI:10.3390/photonics11010004

Na Chen, Yang Jiang, Xiao Lan, Yuejiao Zi, Jing Xu, Jiahui Li, Qiong Zhang, Jinjian Feng

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引用次数: 0

摘要

由于载流子的动态特性，直接调制激光器（DML）的调制光场具有带一定频率啁啾的强度包络。当啁啾通过一个频率鉴别器（如带线性边缘的光学滤波器）线性映射到强度时，光场就会呈现一个由包络函数和啁啾函数之间的乘法运算决定的新信号。在三角驱动信号下，通过适当调整滤波器窗口，这一过程可产生暗、亮和频率加倍的亮抛物线波形。该方法通过理论分析和实验演示得到了验证。它不仅提供了一种低成本、简单的抛物线信号生成方案，还为任意波形生成提供了一种新方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Parabolic Waveform Generator Based on the Chirp Characteristics of a Directly Modulated Laser

Due to carrier dynamics, the modulated light field from a directly modulated laser (DML) has an intensity envelope with a certain frequency chirp. When the chirp is linearly mapped into intensity by a frequency discriminator such as an optical filter with a linear edge, the optical field presents a new signal determined by the multiplication operation between the envelope function and the chirp function. Under a triangular drive signal, this process can contribute dark, bright and frequency-doubled bright parabolic waveforms by properly adjusting the filter window. This method is verified by both a theoretical analysis and experimental demonstrations. It not only provides a low-cost and simple scheme to generate parabola signals, but also a new method for arbitrary waveform generation.

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来源期刊

Photonics Physics and Astronomy-Instrumentation

CiteScore

2.60

自引率

20.80%

发文量

817

审稿时长

8 weeks

期刊介绍： Photonics (ISSN 2304-6732) aims at a fast turn around time for peer-reviewing manuscripts and producing accepted articles. The online-only and open access nature of the journal will allow for a speedy and wide circulation of your research as well as review articles. We aim at establishing Photonics as a leading venue for publishing high impact fundamental research but also applications of optics and photonics. The journal particularly welcomes both theoretical (simulation) and experimental research. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files and software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material.