Air and silica core Bragg fibers for radiation delivery in the wavelength range 0.6-1.5 μm

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F16%3A00460276" target="_blank" >RIV/67985882:_____/16:00460276 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.yofte.2016.05.011" target="_blank" >http://dx.doi.org/10.1016/j.yofte.2016.05.011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.yofte.2016.05.011" target="_blank" >10.1016/j.yofte.2016.05.011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Air and silica core Bragg fibers for radiation delivery in the wavelength range 0.6-1.5 μm

Popis výsledku v původním jazyce

This paper presents fundamental characteristics of laboratory designed and fabricated Bragg fibers with air and silica cores at wavelengths of 632, 975, 1064 and 1550 nm. Fibers with the 26-μm-silica core and 5- or 73-μm-air cores in diameters and claddings of 3 pairs of Bragg layers were prepared from one preform. The overall transmittance, attenuation coefficients, coupling losses, bending losses, and damage-intensity thresholds were determined using four continuous-wave laser sources with the maximum output power of 300 mW and a pulsed 9 ns laser with the maximum output energy up to 1 mJ. The lowest attenuation coefficient of about 70 dB/km was determined at 1064 nm with the 73-μm-air-core Bragg fiber. All fibers have been found to exhibit negligible bending losses down to the bending diameters of 5 cm. In comparison with the conventional gradient optical fiber, all the prepared Bragg fibers have approximately six times higher damage intensity threshold of about 30 GWcm-2 and therefore they are very suitable for high power laser radiation delivery

Název v anglickém jazyce

Air and silica core Bragg fibers for radiation delivery in the wavelength range 0.6-1.5 μm

Popis výsledku anglicky

This paper presents fundamental characteristics of laboratory designed and fabricated Bragg fibers with air and silica cores at wavelengths of 632, 975, 1064 and 1550 nm. Fibers with the 26-μm-silica core and 5- or 73-μm-air cores in diameters and claddings of 3 pairs of Bragg layers were prepared from one preform. The overall transmittance, attenuation coefficients, coupling losses, bending losses, and damage-intensity thresholds were determined using four continuous-wave laser sources with the maximum output power of 300 mW and a pulsed 9 ns laser with the maximum output energy up to 1 mJ. The lowest attenuation coefficient of about 70 dB/km was determined at 1064 nm with the 73-μm-air-core Bragg fiber. All fibers have been found to exhibit negligible bending losses down to the bending diameters of 5 cm. In comparison with the conventional gradient optical fiber, all the prepared Bragg fibers have approximately six times higher damage intensity threshold of about 30 GWcm-2 and therefore they are very suitable for high power laser radiation delivery

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Optical Fiber Technology

ISSN

1068-5200

e-ISSN

—

Svazek periodika

31

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

36-41

Kód UT WoS článku

000384018300006

EID výsledku v databázi Scopus

2-s2.0-84973294651