Acta Optica Sinica, Volume. 41, Issue 10, 1036001(2021)
A Miniaturized Adaptive Dual-Comb Based on Piezoelectric Transducer and Multi-stage Temperature Feedback
In this paper, we developed a miniaturized adaptive dual-comb system. Two erbium-doped fiber oscillators with repetition frequency of about 77.2 MHz and frequency difference of 180 Hz were used as the seed source of the dual-comb. Their output pulses were injected into a highly nonlinear fiber for spectral broadening after passing through two-stage erbium-doped fiber amplifiers. As a result, the spectral coverage range was extended to 1200--1700 nm. Furthermore, we applied two continuous lasers centered at 1550 nm and 1564 nm and two fiber oscillators to beating and thus obtained four beat signals. This aimed to compensate for the instability of differences in carrier-envelope offset frequency and repetition frequency. Piezoelectric transducer voltage feedback and multi-stage temperature feedback were introduced to the above signals to achieve their stability. As such, the standard deviation of the beat signals was 0.19 MHz. The developed adaptive dual-comb system has a size of 80 cm×67 cm×8 cm and overall weight less than 30 kg, which provides a solution for a wider range of outdoor applications.
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Xu Chen, Xiangyu Jin, Qingting Wang, Shiyu Lu, Qiang Hao, Jie Wang, Hongyu Nie, Ming Yan, Kangwen Yang, Heping Zeng. A Miniaturized Adaptive Dual-Comb Based on Piezoelectric Transducer and Multi-stage Temperature Feedback[J]. Acta Optica Sinica, 2021, 41(10): 1036001
Category: Letters
Received: Jan. 14, 2021
Accepted: Mar. 10, 2021
Published Online: May. 8, 2021
The Author Email: Yang Kangwen (kangwenyang@yeah.net)