Optical Fiber Delay Lines in Microwave Photonics: Sensitivity to Temperature and Means to Reduce it
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F21%3A00349101" target="_blank" >RIV/68407700:21230/21:00349101 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1109/JLT.2021.3052609" target="_blank" >https://doi.org/10.1109/JLT.2021.3052609</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/JLT.2021.3052609" target="_blank" >10.1109/JLT.2021.3052609</a>
Alternative languages
Result language
angličtina
Original language name
Optical Fiber Delay Lines in Microwave Photonics: Sensitivity to Temperature and Means to Reduce it
Original language description
One of the key functionalities in microwave photonics is to be able to define controllable time delays during the signal processing. Optical fibers are often used to achieve this functionality, especially when a long delay or a widely-tunable delay is needed. However, the stability of this delay in the presence of environmental changes (e.g., temperature) has not, to the best of our knowledge, been reviewed yet. Here, we firstly discuss the impact of temperature-induced variations on the signal propagation time in optical fibers and its implications in microwave photonics. We compare the impact of the thermal sensitivity of various delay lines for applications in which the signal is transported from point A to point B, as well as for applications in which the propagation time through a fiber or the fiber dispersion is used to create a fixed or tunable delay. In the second part of the article we show the impact of fiber thermal sensitivity on a narrow-band microwave photonics filter made of standard single mode fiber (SSMF) and a hollow core fiber (HCF), which has significantly lower thermal sensitivity of propagation time to temperature. The central frequency of the band-pass filter changes almost 16 times more in the filter made of SSMF as compared to that of HCF, dictating very tight (0.05 °C) temperature stabilization for SSMF-based filters. On the basis of our thermal sensitivity analysis we conclude that HCFs are very promising for environmentally stable microwave photonics applications.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
<a href="/en/project/LTC18008" target="_blank" >LTC18008: Transmission of Millimeter Waves over Fiber and Free-space Optical Infrastructures (TraFFIc)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
IEEE/OSA Journal of Lightwave Technology
ISSN
0733-8724
e-ISSN
1558-2213
Volume of the periodical
39
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
2311-2318
UT code for WoS article
000633442200007
EID of the result in the Scopus database
2-s2.0-85099724370