Coupling between the defect mode of a cholesteric liquid crystal and the localized mode of a cholesteric liquid crystal-phase plate-metal structure is theoretically demonstrated. It is shown that the transmittance spectrum can be tuned by changing the twist-defect angle and helix pitch, which are governed by external factors. The spectra for different circular polarizations of the incident light are different; specifically, at the nondiffracting polarization, there is no defect-mode transmittance peak.
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Sun Yat Sen Univ, Natl Demonstrat Ctr Expt Phys Educ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaSun Yat Sen Univ, Natl Demonstrat Ctr Expt Phys Educ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Zhao, Shiyu
Li, Jiaoyang
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Sun Yat Sen Univ, Natl Demonstrat Ctr Expt Phys Educ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaSun Yat Sen Univ, Natl Demonstrat Ctr Expt Phys Educ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Li, Jiaoyang
Cai, Zhigang
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Sun Yat Sen Univ, Natl Demonstrat Ctr Expt Phys Educ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaSun Yat Sen Univ, Natl Demonstrat Ctr Expt Phys Educ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China