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The fiber Fabry-Perot interferometer used to measure the refractive index modulation of polymer-dispersed liquid crystal is introduced.From measuring the quantity of the interference fringe shift with a CCD based on the theory of isoclinal interference fringes formatting,the maximal refractive index modulation versus different external voltages,3.899×10-3 in the external voltage of 57.4 V/μm,and the dynamic refractive index modulation versus response time in the external voltage of 8 V/μm are found in our prepared 1.250 mm-thick PMMA/E49/TNF/ECZ polymer-dispersed liquid crystals.The experimental results will be helpful to understand the photoinduced reaction mechanism of the material and optimize the mixture ratio of each component.
The fiber Fabry-Perot interferometer used to measure the refractive index modulation of polymer-dispersed liquid crystal is introduced. Flood measuring the quantity of the interference fringe shift with a CCD based on the theory of isoclinal interference fringes formatting, the maximal refractive index modulation versus different external voltages, 3.899 × 10-3 in the external voltage of 57.4 V / μm, and the dynamic refractive index modulation versus response time in the external voltage of 8 V / μm are found in our prepared 1.250 mm-thick PMMA / E49 / TNF / ECZ polymer-dispersed liquid crystals. The experimental results will be helpful to understand the photoinduced reaction mechanism of the material and optimize the mixture ratio of each component.