Bandwidth-enhanced LFM waveform generator based on dynamic control of an optically injected semiconductor laser

被引：4

作者：

Zhou, Pei ^{[1
,2
,3
]}

Zhu, Jian ^{[1
,2
,3
]}

Zhang, Renheng ^{[1
,2
,3
]}

Li, Nianqiang ^{[1
,2
,3
]}

机构：

[1] Soochow Univ, Sch Optoelect Sci & Engn, Suzhou 215006, Peoples R China

[2] Soochow Univ, Key Lab Adv Opt Mfg Technol Jiangsu Prov, Key Lab Modern Opt Technol, Educ Minist China, Suzhou 215006, Peoples R China

[3] Soochow Univ, Key Lab Modern Opt Technol, Educ Minist China, Suzhou 215006, Peoples R China

来源：

OPTICS LETTERS | 2022年 / 47卷 / 15期

基金：

中国国家自然科学基金;

关键词：

PERIOD-ONE OSCILLATIONS; MICROWAVE GENERATION; OPTOELECTRONIC OSCILLATOR; MODULATION; SUBJECT; PRODUCT;

D O I：

10.1364/OL.468144

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A bandwidth-enhanced linear frequency-modulated (LFM) waveform generation scheme is proposed and demonstrated based on dynamic control of an optically injected semiconductor laser (OISL). The OISL operates at the period-one (P1) oscillation state under proper injection conditions. After photodetection, a tunable microwave signal is obtained with its frequency determined by the optical injection strength and the detuning frequency between the master and slave lasers. For a fixed detuning frequency, an LFM waveform can be generated by introducing an electrical control signal S(t) with a quasi-sawtooth profile to dynamically manipulate the injection strength of the OISL. Then, to overcome the bandwidth limitation by the achievable PI frequency range under a given detuning frequency, both the injection strength and the detuning frequency are dynamically controlled to achieve a synthesized PI frequency range, thus generating LFM waveforms with enhanced bandwidths. In our demonstration, LFM waveforms with a synthesized bandwidth of 8 GHz (12-20 GHz) and 24.8 GHz (12.6-37.4 GHz) are generated in the experiment and simulation, respectively. (C) 2022 Optica Publishing Group

引用

页码：3864 / 3867

页数：4