Thermally-Insensitive Hollow-Core Fibre Fabry-Perot Interferometer for Laser Stabilisation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F24%3A00379716" target="_blank" >RIV/68407700:21230/24:00379716 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1109/EFTF61992.2024" target="_blank" >https://doi.org/10.1109/EFTF61992.2024</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/EFTF61992.2024" target="_blank" >10.1109/EFTF61992.2024</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermally-Insensitive Hollow-Core Fibre Fabry-Perot Interferometer for Laser Stabilisation

Popis výsledku v původním jazyce

Fiber-based Fabry-Perot interferometers (FPI) can provide long delay in a compact package and after fabrication, are alignment-free. This delay is, unfortunately, sensitive to environmental temperature variations duet the fiber thermal sensitivity. This sensitivity is reduced by about 20 times when using hollow core fiber (HCF) rather than standard SMF. HCF-FPIs have been demonstrated with lengths of tens of meters and finesse in excess of 1002 HCF. As HCF thermal sensitivity is limited by thermal expansion, it can be further reduced by winding the HCF onto a drum made of a material with zero or slightly negative coefficient of thermal expansion (CTE). When the temperature is increased, the tension under which the HCF is wound on the drum is reduced, but its length follows the size of the drum. We present a HCF-FPI that achieves zero thermal sensitivity for the first time by winding it on a Neoceram spool that is a commercially available glass ceramic with slightly negative CTE.

Název v anglickém jazyce

Thermally-Insensitive Hollow-Core Fibre Fabry-Perot Interferometer for Laser Stabilisation

Popis výsledku anglicky

Fiber-based Fabry-Perot interferometers (FPI) can provide long delay in a compact package and after fabrication, are alignment-free. This delay is, unfortunately, sensitive to environmental temperature variations duet the fiber thermal sensitivity. This sensitivity is reduced by about 20 times when using hollow core fiber (HCF) rather than standard SMF. HCF-FPIs have been demonstrated with lengths of tens of meters and finesse in excess of 1002 HCF. As HCF thermal sensitivity is limited by thermal expansion, it can be further reduced by winding the HCF onto a drum made of a material with zero or slightly negative coefficient of thermal expansion (CTE). When the temperature is increased, the tension under which the HCF is wound on the drum is reduced, but its length follows the size of the drum. We present a HCF-FPI that achieves zero thermal sensitivity for the first time by winding it on a Neoceram spool that is a commercially available glass ceramic with slightly negative CTE.

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/GA22-32180S" target="_blank" >GA22-32180S: Pokročilé techniky v mikrovlnné fotonice založené na vláknech typu hollow-core</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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