A Hermetic Package Technique for Multi-Functional Fiber Sensors through Pressure Boundary of Energy Systems Based on Glass Sealants
Zhichun Fan,
Shuda Zhong,
Kehao Zhao,
Qirui Wang,
Yuqi Li,
Guangyin Zhang,
Guangqun Ma,
Jieru Zhao,
He Yan,
Zhiyong Huang,
Jyotsna Sharma,
Kevin P. Chen
Affiliations
Zhichun Fan
Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
Shuda Zhong
Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
Kehao Zhao
Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
Qirui Wang
Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
Yuqi Li
Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
Guangyin Zhang
Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
Guangqun Ma
Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
Jieru Zhao
Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
He Yan
Institute of Nuclear and New Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Collaborative Innovation Center for Advanced Nuclear Energy Technology, Tsinghua University, Beijing 100084, China
Zhiyong Huang
Institute of Nuclear and New Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Collaborative Innovation Center for Advanced Nuclear Energy Technology, Tsinghua University, Beijing 100084, China
Jyotsna Sharma
Department of Petroleum Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
Kevin P. Chen
Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
This paper presents a hermitic fiber sensor packaging technique that enables fiber sensors to be embedded in energy systems for performing multi-parameter measurements in high-temperature and strong radiation environments. A high-temperature stable Intrinsic Fabry–Perot interferometer (IFPI) array, inscribed by a femtosecond laser direct writing scheme, is used to measure both temperature and pressure induced strain changes. To address the large disparity in thermo-expansion coefficients (TECs) between silica fibers and metal parts, glass sealants with TEC between silica optical fibers and metals were used to hermetically seal optical fiber sensors inside stainless steel metal tubes. The hermetically sealed package is validated for helium leakages between 1 MPa and 10 MPa using a helium leak detector. An IFPI sensor embedded in glass sealant was used to measure pressure. The paper demonstrates an effective technique to deploy fiber sensors to perform multi-parameter measurements in a wide range of energy systems that utilize high temperatures and strong radiation environments to achieve efficient energy production.
