Acta Optica Sinica, Volume. 41, Issue 22, 2222001(2021)

Refractive Index and Linear Expansion Pressure Response Characteristics of PDMS

Hao Li1,2, Jun Li1,2, Yujia Zhao1, Peizhen Jiang1, Mingjing Xü2, Jiaxin Liu1, and Ai Zhou2、*
Author Affiliations
  • 1National Engineering Laboratory of Optical Fiber Sensing Technology, Wuhan University of Technology, Wuhan, Hubei 430074, China
  • 2School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, Hubei 430074, China
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    Polydimethylsiloxane (PDMS) is a polymer organic silicon compound, which is widely used in microfluidic chip preparation, biology, optics, and composite material matrix. The optical fiber interferometer is constructed through the combination of PDMS and optical fiber structure, the refractive index and linear expansion pressure response characteristics of PDMS are tested by optical fiber sensing technology. Experimental results show that the rate of change for refractive index of PDMS with the pressure is -2.1×10-2 RIU/MPa (RIU is the unit of refractive index), the rate of change for linear expansion of PDMS with the pressure is 17.3 μm/MPa. The refractive index and linear expansion pressure response of PDMS are studied in the form of optical measurement, which has higher accuracy and reliability.

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    Hao Li, Jun Li, Yujia Zhao, Peizhen Jiang, Mingjing Xü, Jiaxin Liu, Ai Zhou. Refractive Index and Linear Expansion Pressure Response Characteristics of PDMS[J]. Acta Optica Sinica, 2021, 41(22): 2222001

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    Paper Information

    Category: Optical Design and Fabrication

    Received: Apr. 9, 2021

    Accepted: Jun. 3, 2021

    Published Online: Oct. 29, 2021

    The Author Email: Ai Zhou (zhouaipost@hotmail.com)

    DOI:10.3788/AOS202141.2222001

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