Semiconductor Optoelectronics, Volume. 45, Issue 5, 726(2024)

Research on Temperature Sensing Characteristics of FBG Packaged with Glass Solder

YANG Wukun1... ZHANG Yumin1,2, SONG Yanming1,2, TIAN Jing1, and WANG Du12 |Show fewer author(s)
Author Affiliations
  • 1Beijing Engineering Research Center of Optoelectronic Information and Instruments, Beijing Information Science & Technology University, Beijing 100192, CHN
  • 2Beijing Laboratory of Optical Fiber Sensing and System, Beijing Information Science & Technology University, Beijing 100016, CHN
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    A novel temperature sensing structure and packaging process for metal-encapsulated fiber Bragg grating (FBG) temperature sensors were proposed to overcome issues such as aging, creep, and other long-term effects typically seen in traditional adhesive-encapsulated FBG temperature sensors. Finite element analysis was used to design a strain-insensitive sensor. In this new design, glass solder replaced traditional epoxy resin adhesive to secure the FBG to a stainless steel substrate through two-point welding, while a metal shell and silicone rubber provided sealing protection. The FBG temperature sensor demonstrated a temperature sensitivity of 27.46 pm/℃ within the range of -20 to 55 ℃, with a linear fitting degree of 0.999. The sensor exhibited excellent temperature stability and repeatability, achieving a measurement standard deviation of less than 0.003 ℃ across a broader temperature range of 0 to 150 ℃. This packaging structure offers a simple, cost-effective, and easily implementable sensor technology, with promising application prospects in the field of structural health monitoring.

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    YANG Wukun, ZHANG Yumin, SONG Yanming, TIAN Jing, WANG Du. Research on Temperature Sensing Characteristics of FBG Packaged with Glass Solder[J]. Semiconductor Optoelectronics, 2024, 45(5): 726

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    Paper Information

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    Received: May. 21, 2024

    Accepted: Feb. 13, 2025

    Published Online: Feb. 13, 2025

    The Author Email:

    DOI:10.16818/j.issn1001-5868.2024052102

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