Fiber optic Sagnac interferometer can measure the rotation rate of a system with a high sensitivity. However, they require a large sensor area which leads to a huge footprint and size compared to their MEMS counterpart. Consequently, the performance decreases when using chip integrated Sagnac interferometers with small sensor areas. Here, we address this issue and present a method to improve the sensitivity at a small scale. Therefore, we utilize twomode squeezed light that can be generated in a ring resonator via four-wave mixing (FWM), which can have a very low noise. We show that the combination of classical coherent light and squeezed light can improve the sensor performance compared to a classical fiber optic Sagnac interferometer. For this purpose, we discuss two different configurations that are suited for various applications. The first one makes use of the low-noise of squeezed light and is suited for small and low loss systems using intensitiy difference (ID) measurements while the second one measures the variance of squeezed light via product detection (PD) and is suited for larger and lossy systems.
%0 Journal Article
%1 10320213
%A Tritschler, Patrick
%A Ohms, Torsten
%A Degenfeld-Schonburg, Peter
%A Zschocke, Fabian
%A Zimmermann, André
%D 2023
%J IEEE Sensors Letters
%K ifm_article tritschler zimmermann
%R 10.1109/LSENS.2023.3333751
%T Detection schemes for two-mode squeezed fiber optic Sagnac interferometry
%X Fiber optic Sagnac interferometer can measure the rotation rate of a system with a high sensitivity. However, they require a large sensor area which leads to a huge footprint and size compared to their MEMS counterpart. Consequently, the performance decreases when using chip integrated Sagnac interferometers with small sensor areas. Here, we address this issue and present a method to improve the sensitivity at a small scale. Therefore, we utilize twomode squeezed light that can be generated in a ring resonator via four-wave mixing (FWM), which can have a very low noise. We show that the combination of classical coherent light and squeezed light can improve the sensor performance compared to a classical fiber optic Sagnac interferometer. For this purpose, we discuss two different configurations that are suited for various applications. The first one makes use of the low-noise of squeezed light and is suited for small and low loss systems using intensitiy difference (ID) measurements while the second one measures the variance of squeezed light via product detection (PD) and is suited for larger and lossy systems.
@article{10320213,
abstract = {Fiber optic Sagnac interferometer can measure the rotation rate of a system with a high sensitivity. However, they require a large sensor area which leads to a huge footprint and size compared to their MEMS counterpart. Consequently, the performance decreases when using chip integrated Sagnac interferometers with small sensor areas. Here, we address this issue and present a method to improve the sensitivity at a small scale. Therefore, we utilize twomode squeezed light that can be generated in a ring resonator via four-wave mixing (FWM), which can have a very low noise. We show that the combination of classical coherent light and squeezed light can improve the sensor performance compared to a classical fiber optic Sagnac interferometer. For this purpose, we discuss two different configurations that are suited for various applications. The first one makes use of the low-noise of squeezed light and is suited for small and low loss systems using intensitiy difference (ID) measurements while the second one measures the variance of squeezed light via product detection (PD) and is suited for larger and lossy systems.},
added-at = {2023-11-20T12:53:11.000+0100},
author = {Tritschler, Patrick and Ohms, Torsten and Degenfeld-Schonburg, Peter and Zschocke, Fabian and Zimmermann, André},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/240921a92a93aac44db5ca80c8784a618/holgerruehl},
doi = {10.1109/LSENS.2023.3333751},
interhash = {1077570d991685c68289ef018e834f3a},
intrahash = {40921a92a93aac44db5ca80c8784a618},
issn = {2475-1472},
journal = {IEEE Sensors Letters},
keywords = {ifm_article tritschler zimmermann},
month = {11},
timestamp = {2023-11-20T12:53:11.000+0100},
title = {Detection schemes for two-mode squeezed fiber optic Sagnac interferometry},
year = 2023
}
