Adjusting the Transmission Bands of the Negative Curvature Hollow-core Fibers
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F23%3A00584352" target="_blank" >RIV/67985882:_____/23:00584352 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12573/125730Y/Adjusting-the-transmission-bands-of-the-negative-curvature-hollow-core/10.1117/12.2665709.short" target="_blank" >https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12573/125730Y/Adjusting-the-transmission-bands-of-the-negative-curvature-hollow-core/10.1117/12.2665709.short</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2665709" target="_blank" >10.1117/12.2665709</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Adjusting the Transmission Bands of the Negative Curvature Hollow-core Fibers
Popis výsledku v původním jazyce
Antiresonant negative curvature hollow-core optical fibers (NC-HCFs) have proven to have great potential for the delivery of high-energy pulses and for continuous wave Mid-infrared fiber gas laser (FGL) systems. However, following the drawing fiber conditions on the designed fiber geometry, the resulting position of transmission bands of the NC-HCFs needs to be matched to both pumping and lasing wavelengths for the FGL with the particular filled gas. In this work, we investigated experimentally the possibilities of adjusting the transmission bands of a short length of the fabricated NC-HCFs to both UV the Mid-infrared directions that would further enhance their usage in FGL. The investigation was based on two steps. The first step involves fabricating a few fibers from a single preform with different inner geometry dimensions concerning the applied pressure into the preform’s capillaries. This would help to calibrate the correlation of adjusted fibers’ transmission bands to the desired wavelength with respect to the applied pressure while drawing. Increasing the pressure into the capillaries from 300 to 400 mm H2O while maintaining the pressure in the preform core at 30 mm H2O the bands were gradually blue-shifted by 83.5 % to have about 330 nm shift at the first transmission band. This is attributed to the decrease in core diameter, capillaries gaps, and wall-thickness while increasing the capillaries diameter. The second step involves processing a short length of drawn fibers through local heating and tapering for adjusting their transmission bands' positions using a CO2 laser fusion splicer. Processing the whole length of a short fiber segment ~5 cm shows a complete redshift by 87.8 % and a blueshift by 89.8 % after heating and tapering respectively. The first transmission band of the processed fiber was shifted about 200 nm after heating and 122 nm after tapering. The parameters of processing were optimized, thus, no insertion losses were observed. Such results urge us to further develop the mechanism of processing fibers to process long lengths of fibers in the future
Název v anglickém jazyce
Adjusting the Transmission Bands of the Negative Curvature Hollow-core Fibers
Popis výsledku anglicky
Antiresonant negative curvature hollow-core optical fibers (NC-HCFs) have proven to have great potential for the delivery of high-energy pulses and for continuous wave Mid-infrared fiber gas laser (FGL) systems. However, following the drawing fiber conditions on the designed fiber geometry, the resulting position of transmission bands of the NC-HCFs needs to be matched to both pumping and lasing wavelengths for the FGL with the particular filled gas. In this work, we investigated experimentally the possibilities of adjusting the transmission bands of a short length of the fabricated NC-HCFs to both UV the Mid-infrared directions that would further enhance their usage in FGL. The investigation was based on two steps. The first step involves fabricating a few fibers from a single preform with different inner geometry dimensions concerning the applied pressure into the preform’s capillaries. This would help to calibrate the correlation of adjusted fibers’ transmission bands to the desired wavelength with respect to the applied pressure while drawing. Increasing the pressure into the capillaries from 300 to 400 mm H2O while maintaining the pressure in the preform core at 30 mm H2O the bands were gradually blue-shifted by 83.5 % to have about 330 nm shift at the first transmission band. This is attributed to the decrease in core diameter, capillaries gaps, and wall-thickness while increasing the capillaries diameter. The second step involves processing a short length of drawn fibers through local heating and tapering for adjusting their transmission bands' positions using a CO2 laser fusion splicer. Processing the whole length of a short fiber segment ~5 cm shows a complete redshift by 87.8 % and a blueshift by 89.8 % after heating and tapering respectively. The first transmission band of the processed fiber was shifted about 200 nm after heating and 122 nm after tapering. The parameters of processing were optimized, thus, no insertion losses were observed. Such results urge us to further develop the mechanism of processing fibers to process long lengths of fibers in the future
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
10306 - Optics (including laser optics and quantum optics)
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2023
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
Proceedings of SPIE - The International Society for Optical Engineering
ISBN
978-151066256-8
ISSN
0277-786X
e-ISSN
1996-756X
Počet stran výsledku
6
Strana od-do
125730Y
Název nakladatele
SPIE
Místo vydání
Bellingham
Místo konání akce
Praha
Datum konání akce
24. 4. 2023
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
—