相位噪声抑制的捷变频电光频率梳
Frequency-Agile Electro-Optic Comb with Suppressed Phase Noise
马慧 1王子健 1葛锦蔓 2李小军 2任心仪 1万卓仁 1刘婷婷 1闫明1
作者信息
- 1. 华东师范大学精密光谱科学与技术国家重点实验室,上海 200062;华东师范大学重庆研究所重庆市精密光学重点实验室,重庆 401120
- 2. 中国空间技术研究院西安分院空间微波技术国家级重点实验室,陕西 西安 710100
- 折叠
摘要
报道了一种单调制器电光频率梳产生技术,其重复频率高速可调,调频速率达1 MHz.经非线性光纤展宽,光梳谱宽可达1.25 THz(约10 nm,中心波长1550 nm),含4800根间隔为260 MHz的窄线宽梳齿.单模光纤色散补偿后,脉宽为260 fs.研究了光纤放大与非线性光谱展宽对梳齿相干性的影响,并采用声光调制器对梳齿的共模相位噪声进行了前馈式抑制.该光源在分子光谱及干涉测距等领域具有应用前景.
Abstract
In this paper,we report on a single-modulator electro-optic frequency comb whose repetition frequency can be modulated at high speed with a modulation rate of 1 MHz.With spectral broadening in a nonlinear fiber,a comb spectrum spanning 1.25 THz(10 nm,the central wavelength is 1550 nm)with 4800 narrow-linewidth combs separated by 260 MHz is achieved.The optical comb pulse width is compressed to 260 fs by dispersion compensation in a single-mode fiber.Also,the impacts of optical fiber amplification and nonlinear spectral broadening on the comb coherence are studied,and the common-mode phase noise of the comb is suppressed by a feedforward method based on the acousto-optic modulator.The developed electro-optic comb has promising applications for molecular spectroscopy and interferometric ranging.
关键词
电光调制/光学频率梳/相位噪声/调频Key words
electro-optic modulation/optical frequency comb/phase noise/frequency modulation引用本文复制引用
基金项目
国家自然科学基金(12022411)
重庆市自然科学基金(CSTB2022NSCQ-JQX0016)
陕西省重点研发计划项目(2023KXJ-267)
航天五院西安分院自主研发项目(Y21-KJCX-12)
出版年
2024
NETL
NSTL
万方数据