@inproceedings{9b3f88c1a5b1469ab7234f7a6a951e4e,
title = "Highly coherent linearly-swept fiber laser based on composite optical phase-locked loop",
abstract = "We present a dual-loop composite optical phase-locked loop (OPLL) composed of an acousto-optic frequency shifter based external modulation loop and a piezo based direct modulation loop for the generation of highly coherent swept-frequency fiber laser. It allows offering a larger loop bandwidth and gain, permitting an efficient linearization and coherence enhancement. We have verified experimentally a highly coherent swept-frequency fiber laser with a high fidelity and linearized frequency sweep with sweep range of ~8.2 GHz at ~164 GHz/s sweep rate, accompanied with a peak-to-peak frequency error as low as ~130 kHz. The in-band noise of the coherent beat note has been effective suppressed by almost 60 dB within a loop bandwidth up to ~80 kHz . The proposed linearly swept-frequency fiber laser provides a straightforward optimization of the real-time sweep control and far distance ranging in various scenarios, which is supposed to be a beneficial tool in both industrial and commercial applications.",
keywords = "coherence, composite optical phase-locked loop, linearization, linearly-swept fiber laser, loop bandwidth",
author = "Yinxia Meng and Weilin Xie and Yuxiang Feng and Wei Wei and Yi Dong",
note = "Publisher Copyright: {\textcopyright} 2022 SPIE.; 2021 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing ; Conference date: 08-04-2022 Through 10-04-2022",
year = "2022",
doi = "10.1117/12.2620470",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Jian Chen and Yi Dong and Shilong Pan and Yang Qiu and Fabien Bretenaker",
booktitle = "2021 International Conference on Optical Instruments and Technology",
address = "United States",
}