• Acta Photonica Sinica
  • Vol. 49, Issue 3, 0314004 (2020)
Xiao-jun LIN1, De-quan LIN1, Ting-di LIAO2, Ya-fan DUAN2, and Yan-tang HUANG1、2、*
Author Affiliations
  • 1College of Physics and Information Engineering, Fuzhou University, Fuzhou 350108, China
  • 2Research Center for Photonic Technology, Quanzhou Normal University, Quanzhou, Fujian 362000, China
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    DOI: 10.3788/gzxb20204903.0314004 Cite this Article
    Xiao-jun LIN, De-quan LIN, Ting-di LIAO, Ya-fan DUAN, Yan-tang HUANG. Thermo-optic Effect of Optical Microsphere Cavity for Temperature Sensor Research[J]. Acta Photonica Sinica, 2020, 49(3): 0314004 Copy Citation Text show less

    Abstract

    In order to study the thermo-optic effect of the optical microsphere cavity, two kinds of pump sources, 1 550 nm band tunable laser and broadband light source, were used to measure the change of the resonance peak wavelength of silica, tellurite glass microsphere and rare earth ion doped microsphere when the excitation light power and environment temperature change. The excitation power sensitivity of the silica microspheres was 32.4 pm/mW and the temperature sensitivity was 13.4 pm/℃. For the thulium ions doped silica microsphere, the sensitivity of excitation power was 48.7 pm/mw and the sensitivity of the environment temperature was 15.2 pm/℃. The excitation power sensitivity of the tellurite microsphere was 71.1 pm/mw, and the temperature sensitivity was 0.019 1 nm/℃, which was nearly one times higher than that of the FBG temperature sensor (10 pm/℃). If the rare earth ions were doped, the sensitivity was 1.1 times higher. The results have reference significance for the microcavity applications of the temperature sensor.
    Xiao-jun LIN, De-quan LIN, Ting-di LIAO, Ya-fan DUAN, Yan-tang HUANG. Thermo-optic Effect of Optical Microsphere Cavity for Temperature Sensor Research[J]. Acta Photonica Sinica, 2020, 49(3): 0314004
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