低相位噪声平谱光参量频梳的设计

IF 5.4 1区 物理与天体物理 Q1 OPTICS
APL Photonics Pub Date : 2023-11-28 DOI:10.1063/5.0165775
Yijia Cai, Ronit Sohanpal, Yuan Luo, Alexander M. Heidt, Zhixin Liu
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引用次数: 0

摘要

近年来,光频率梳(OFCs)以其优越的频率相干特性在光通信、光谱学和微波信号处理等众多领域取得了重大发展。最近对OFC发展的兴趣强调最小化和减轻单个梳状线的相位噪声,以实现高质量信号的产生、处理和检测。无腔电光梳和参数梳是这些应用的有吸引力的来源,因为它们允许平坦的光谱,可调的音调间隔,以及对温度变化的鲁棒性。虽然以前的研究已经证明了宽带参数OFC的产生,但相位噪声的缩放尚未得到系统的研究。在这里,我们展示了一个25 ghz间距的无腔参数OFC发生器,并研究了影响其相位噪声和线宽的电子和光学噪声源之间的相互作用。此外,我们还研究了基于非线性放大环镜的脉冲整形器的优化设计,重点研究了泵浦功率对信号与基座功率比的影响,最终影响了参数展开后的光谱平坦度和光信噪比(OSNR)。值得注意的是,我们使用所有偏振保持(PM)组件设计OFC,展示了PM高度非线性光纤在参数梳生成中的性能。这就产生了PM无腔梳,在110nm范围内功率变化为9db,每音功率为0dbm,线宽为10khz, OSNR为23db。这些特性使其在通信和信号处理方面具有很高的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On the design of low phase noise and flat spectrum optical parametric frequency comb
Optical frequency combs (OFCs) have become increasingly pervasive in recent years, with their advantageous frequency coherence properties enabling significant developments in numerous fields, such as optical communications, spectroscopy, and microwave signal processing. Recent interest in OFC development emphasizes minimizing and mitigating phase noise of individual comb lines for high-quality signal generation, processing, and detection. Cavity-less electro-optic combs and parametric combs are attractive sources for these applications in that they permit flat spectra, tunable tone spacing, and robustness to temperature variations. Although previous research has demonstrated broadband parametric OFC generation, the scaling of the phase noise has not been systematically investigated. Here, we demonstrate a 25 GHz-spacing cavity-less parametric OFC generator and investigate the interaction between electronic and optical noise sources that affect its phase noise and linewidth. In addition, we study the optimal design of a nonlinear amplified loop mirror based pulse shaper with a focus on the impact of pump power on the signal-to-pedestal power ratio, which ultimately influences the spectral flatness and the optical signal-to-noise ratio (OSNR) after the parametric expansion. Notably, we design the OFC using all polarization-maintaining (PM) components, demonstrating the performance of PM highly nonlinear fibers in parametric comb generation. This results in a PM cavity-less comb with <9 dB power variation over 110 nm, >0 dBm power per tone, <10 kHz linewidth, and >23 dB OSNR. These characteristics make it highly desirable for application in communication and signal processing.
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来源期刊
APL Photonics
APL Photonics Physics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
10.30
自引率
3.60%
发文量
107
审稿时长
19 weeks
期刊介绍: APL Photonics is the new dedicated home for open access multidisciplinary research from and for the photonics community. The journal publishes fundamental and applied results that significantly advance the knowledge in photonics across physics, chemistry, biology and materials science.
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