Hollow-core fiber with stable propagation delay between -150°C and +60°C

Optical fibers with a low thermal coefficient of delay (TCD) have been developed for frequency and timing transmission/distribution. However, their temperature sensitivity changes as a function of temperature and, to date, no study of such fibers has demonstrated improved performance over extended t...

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Published in:Optics letters 2023-02, Vol.48 (3), p.763-766
Main Authors: Feng, Zitong, Sakr, Hesham, Hayes, John R, Fokoua, Eric Numkam, Ding, Meng, Poletti, Francesco, Richardson, David J, Slavík, Radan
Format: Article
Language:English
Subjects:
Cryogenic temperature
Laser stability
Optical fibers
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creator Feng, Zitong
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description Optical fibers with a low thermal coefficient of delay (TCD) have been developed for frequency and timing transmission/distribution. However, their temperature sensitivity changes as a function of temperature and, to date, no study of such fibers has demonstrated improved performance over extended temperature ranges, especially at sub-zero temperatures. Here, we show that a hollow core fiber (HCF) with a thin acrylate coating can have a TCD within ±2.0 ps/km/°C over a broad temperature range from -150°C to +60°C. In addition, this thinly coated HCF can be fully insensitive to temperature around -134°C, making it of interest, e.g., for laser stabilization close to cryogenic temperatures.
doi_str_mv 10.1364/OL.478183
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source Jisc-Optica Publishing Group Read & Publish Agreement 2022-2024 – E Combination 1
subjects Cryogenic temperature
Laser stability
Optical fibers
title Hollow-core fiber with stable propagation delay between -150°C and +60°C
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