物理学报2016，Vol.65Issue(21)：214209-1-214209-9,9.DOI:10.7498/aps.65.214209
单片集成放大反馈激光器的脉冲包络动力学实验研究∗
Exp erimental investigations on the dynamical characteristics of pulse packages in a monolithically integrated amplified feedback laser
摘要
Abstract
Under suitable external perturbation such as optical feedback, optical injection or optoelectronic feedback, semi-conductor lasers can be driven to realize diverse dynamic outputs including period-one, period-two, multi-period, pulse packages (PPs), chaos, etc., which have potential applications in optical secure communications, microwave photonics, lidar, high speed random signal generation, etc.. For the PPs dynamics, most of previous relevant investigations are usually based on a system composed of discrete elements. In this work, we experimentally investigate the PP dynamical characteristics in a three-section monolithically integrated amplified feedback laser (AFL) composed of a distributed feedback (DFB) laser section, a phase (P) section, and an amplified feedback (A) section. For the AFL, the sections P and A act as a compounded feedback cavity in which the feedback phase and strength can be varied by adjusting the current in section P (IP) and the current in section A (IA), respectively. Via the power spectrum and self-correlation function curve of the time series output from the AFL, the influences of IP and IA on repeated frequency (νPP) and regularity of PPs are analyzed in detail. The results indicate that, for the section DFB, whose current (IDFB) is biased at a relatively large level, the AFL can realize two-mode oscillation. After further choosing appropriate IP and IA, the AFL can behave as the dynamical state of PPs. Under IDFB = 86.15 mA and IP = 96.00 mA, through varying IA in a range of 6.50–10.50 mA, there exist two separated regions for IA to make the AFL operate at PPs. For the region with relatively small value of IA, both νPP and the secondary maximum (σ) of self-correlation curve characterizing the regularity of PPs monotonically decrease with the increase of IA. However, for the region with relatively large value of IA, with the increase of IA, νPP first decreases and then fluctuates in a tiny range, but σ first increases, and further reaches an extreme value, and then decreases. Under IDFB =86.15 mA and IA =9.00 mA, the output characteristics of PPs are significantly affected by IP. With IP increasing from 90.5 mA to 96.5 mA, νPP first decreases, and then increases after reaching a minimal value, meanwhile σ shows an approximately opposite variation trend. Finally, for IDFB = 86.15 mA, the mapping of PPs in the parameter space of IP and IA is given and the evolution regularities of PPs are also presented.关键词
单片集成/放大反馈激光器/脉冲包络Key words
monolithically integration/amplified feedback lasers/pulse packages引用本文复制引用
陈熙,赵玲娟,陈建军,王会苹,吴正茂,陆丹,夏光琼..单片集成放大反馈激光器的脉冲包络动力学实验研究∗[J].物理学报,2016,65(21):214209-1-214209-9,9.基金项目
国家自然科学基金(批准号:61275116,61475127,61575163)资助的课题 （批准号:61275116,61475127,61575163）
