Electro-Optic Glass for Infrared Modulators

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43914897" target="_blank" >RIV/60461373:22310/17:43914897 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Electro-Optic Glass for Infrared Modulators

Popis výsledku v původním jazyce

New cost effective infrared modulators are required for reliable processing of optical signals in free space or fibre-optic communications. For these modulators, new glass materials with a high electro-optic coefficient need to be developed. Because high values of an electro-optic coefficient can be achieved in heavy metal glasses doped with metallic nanoparticles, we chose such materials as very promising for this application. In our work, we developed a new glass containing Ag0 nanoparticles based on the glass-forming system PbO-Bi2O3-Ga2O3 that was doped with Ag+ ions in the combination with Sb2O3 as a reducing agent for the precipitation of the nanoparticles. The glass was melted at 1000 °C for 35 min and then cast into a steel mould. Using Sb2O3, Ag+ ions were successfully reduced to metallic silver Ag0, and during heat treatment nanoparticles of a defined size were formed by the clustering of mobile Ag0 atoms. The electro-optic coeffcient of the glass was measured in our optical transmittance setup with a polarizer and analyser. From the rotation angle of the analyser, the electro-optical coefficient was calculated. Its values of the order 10-11 m.V-2 were measured for the glass containing nanoparticles with the optimized mean size of 5 nm that were precipitated by heat treatment at 350 °C for 15 min. Another advantage of this glass was that in the range of 550–2750 nm it had a transmittance of above 70 %, which is high enough to achieve low optical signal attenuation in the near infrared region. Collectively, our results indicate that the developed glass with Ag0 nanoparticles of the optimized size could be applied to the construction of cost effective and reliable infrared modulators.

Název v anglickém jazyce

Electro-Optic Glass for Infrared Modulators

Popis výsledku anglicky

New cost effective infrared modulators are required for reliable processing of optical signals in free space or fibre-optic communications. For these modulators, new glass materials with a high electro-optic coefficient need to be developed. Because high values of an electro-optic coefficient can be achieved in heavy metal glasses doped with metallic nanoparticles, we chose such materials as very promising for this application. In our work, we developed a new glass containing Ag0 nanoparticles based on the glass-forming system PbO-Bi2O3-Ga2O3 that was doped with Ag+ ions in the combination with Sb2O3 as a reducing agent for the precipitation of the nanoparticles. The glass was melted at 1000 °C for 35 min and then cast into a steel mould. Using Sb2O3, Ag+ ions were successfully reduced to metallic silver Ag0, and during heat treatment nanoparticles of a defined size were formed by the clustering of mobile Ag0 atoms. The electro-optic coeffcient of the glass was measured in our optical transmittance setup with a polarizer and analyser. From the rotation angle of the analyser, the electro-optical coefficient was calculated. Its values of the order 10-11 m.V-2 were measured for the glass containing nanoparticles with the optimized mean size of 5 nm that were precipitated by heat treatment at 350 °C for 15 min. Another advantage of this glass was that in the range of 550–2750 nm it had a transmittance of above 70 %, which is high enough to achieve low optical signal attenuation in the near infrared region. Collectively, our results indicate that the developed glass with Ag0 nanoparticles of the optimized size could be applied to the construction of cost effective and reliable infrared modulators.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/TH01010567" target="_blank" >TH01010567: Modulátory pro volnosvazkovou optiku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

C - Předmět řešení projektu podléhá obchodnímu tajemství (§ 504 Občanského zákoníku), ale název projektu, cíle projektu a u ukončeného nebo zastaveného projektu zhodnocení výsledku řešení projektu (údaje P03, P04, P15, P19, P29, PN8) dodané do CEP, jsou upraveny tak, aby byly zveřejnitelné.