We present a fiber-optic sensing configuration based on Mach-Zehnder interferometer (MZI) embedded into the MEMS optofluidic platform for measurement of index of refraction of liquids in dynamic regime. The sensing principle is based on the low-coherence interferometry, characterized by generation of Gaussian shape interferograms, which maximum position depends on the optical path difference (OPD) between the sensing and reference arm of the MZI. When liquid flows through the central microchannel of the optofluidic platform it crosses the light beam between the two optical fibers in the sensing arm causing the OPD change. An algorithm has been applied for calculation of index of refraction of liquids out of the raw interference signals. We obtained very good agreement between the experimental results and literature data of index of refraction of subjected fluids. The accuracy of index of refraction measurement is about 1 % that is predominantly determined by accuracy of reading the pos...ition of mechanical scanner.
Keywords:
fiber-optic sensors / index of refraction / interferometry / optofluidic / MEMS
Source:
Sensors and Electronic Instrumentation Advances: Proceedings of the 7th International Conference on Sensors and Electronic Instrumentation Advances 22-24 September 2021 Palma de Mallorca, Mallorca (Balearic Islands), Spain, 2021, 64-68
Publisher:
IFSA Publishing
Funding / projects:
LSC15-004 project “Immune-regulatory capacity of mesenchymal stem cells (MSCs)
TY - CONF
AU - Đinović, Zoran
AU - Kocsis, A.
AU - Tomić, Miloš
PY - 2021
UR - https://dais.sanu.ac.rs/123456789/12312
AB - We present a fiber-optic sensing configuration based on Mach-Zehnder interferometer (MZI) embedded into the MEMS optofluidic platform for measurement of index of refraction of liquids in dynamic regime. The sensing principle is based on the low-coherence interferometry, characterized by generation of Gaussian shape interferograms, which maximum position depends on the optical path difference (OPD) between the sensing and reference arm of the MZI. When liquid flows through the central microchannel of the optofluidic platform it crosses the light beam between the two optical fibers in the sensing arm causing the OPD change. An algorithm has been applied for calculation of index of refraction of liquids out of the raw interference signals. We obtained very good agreement between the experimental results and literature data of index of refraction of subjected fluids. The accuracy of index of refraction measurement is about 1 % that is predominantly determined by accuracy of reading the position of mechanical scanner.
PB - IFSA Publishing
C3 - Sensors and Electronic Instrumentation Advances: Proceedings of the 7th International Conference on Sensors and Electronic Instrumentation Advances 22-24 September 2021 Palma de Mallorca, Mallorca (Balearic Islands), Spain
T1 - Fiber-optic Mach-Zehnder Interferometer for Refractive Index Measurement Based on MEMS Optofluidic Platform
SP - 64
EP - 68
UR - https://hdl.handle.net/21.15107/rcub_dais_12312
ER -
@conference{
author = "Đinović, Zoran and Kocsis, A. and Tomić, Miloš",
year = "2021",
abstract = "We present a fiber-optic sensing configuration based on Mach-Zehnder interferometer (MZI) embedded into the MEMS optofluidic platform for measurement of index of refraction of liquids in dynamic regime. The sensing principle is based on the low-coherence interferometry, characterized by generation of Gaussian shape interferograms, which maximum position depends on the optical path difference (OPD) between the sensing and reference arm of the MZI. When liquid flows through the central microchannel of the optofluidic platform it crosses the light beam between the two optical fibers in the sensing arm causing the OPD change. An algorithm has been applied for calculation of index of refraction of liquids out of the raw interference signals. We obtained very good agreement between the experimental results and literature data of index of refraction of subjected fluids. The accuracy of index of refraction measurement is about 1 % that is predominantly determined by accuracy of reading the position of mechanical scanner.",
publisher = "IFSA Publishing",
journal = "Sensors and Electronic Instrumentation Advances: Proceedings of the 7th International Conference on Sensors and Electronic Instrumentation Advances 22-24 September 2021 Palma de Mallorca, Mallorca (Balearic Islands), Spain",
title = "Fiber-optic Mach-Zehnder Interferometer for Refractive Index Measurement Based on MEMS Optofluidic Platform",
pages = "64-68",
url = "https://hdl.handle.net/21.15107/rcub_dais_12312"
}
Đinović, Z., Kocsis, A.,& Tomić, M.. (2021). Fiber-optic Mach-Zehnder Interferometer for Refractive Index Measurement Based on MEMS Optofluidic Platform. in Sensors and Electronic Instrumentation Advances: Proceedings of the 7th International Conference on Sensors and Electronic Instrumentation Advances 22-24 September 2021 Palma de Mallorca, Mallorca (Balearic Islands), Spain
IFSA Publishing., 64-68.
https://hdl.handle.net/21.15107/rcub_dais_12312
Đinović Z, Kocsis A, Tomić M. Fiber-optic Mach-Zehnder Interferometer for Refractive Index Measurement Based on MEMS Optofluidic Platform. in Sensors and Electronic Instrumentation Advances: Proceedings of the 7th International Conference on Sensors and Electronic Instrumentation Advances 22-24 September 2021 Palma de Mallorca, Mallorca (Balearic Islands), Spain. 2021;:64-68.
https://hdl.handle.net/21.15107/rcub_dais_12312 .
Đinović, Zoran, Kocsis, A., Tomić, Miloš, "Fiber-optic Mach-Zehnder Interferometer for Refractive Index Measurement Based on MEMS Optofluidic Platform" in Sensors and Electronic Instrumentation Advances: Proceedings of the 7th International Conference on Sensors and Electronic Instrumentation Advances 22-24 September 2021 Palma de Mallorca, Mallorca (Balearic Islands), Spain (2021):64-68,
https://hdl.handle.net/21.15107/rcub_dais_12312 .
