Quick fabrication method of a thermally expanded core in polarization-maintaining fibers using CO2 laser and fiber rotation

IF 2.6 3区 计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Agnieszka Jamrozik , Mateusz Pielach , Bartosz Fabjanowicz, Katarzyna Krupa, Yuriy Stepanenko
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引用次数: 0

Abstract

Maximizing the transmission of high-peak-power ultrashort pulses through joints between polarization-maintaining optical fibers with different mode field diameters is crucial for improving the efficiency of all-fiber laser systems. Here, we propose a method of fabricating a thermally expanded core by using a CO2 laser as a heating source that does not require a priori splicing of fibers. Unlike standard methods utilizing continuous heating of the fiber, usually on the time scale of minutes, we present the pulsed approach, which can reduce the duration of the whole process to below 30 s. Via fiber rotation, we tailor our method to polarization-maintaining optical fibers. Furthermore, we apply the thermally expanded core method to manufacturing mode field adapters between commercially available polarization-maintaining optical fibers. Exemplary splices reveal an increase in transmission of 30 %, enabling insertion losses lower than 0.4 dB. The presented methods of fabricating a thermally expanded core and mode field adapters show high potential for large-volume production, especially for high-power applications, as the splices can withstand peak powers as high as 50 kW.
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来源期刊
Optical Fiber Technology
Optical Fiber Technology 工程技术-电信学
CiteScore
4.80
自引率
11.10%
发文量
327
审稿时长
63 days
期刊介绍: Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.
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