The phase interference phenomenon due to the multiple plane-wave signals as initial conditions of the FDTD method for computing band structure of photonic crystals (PCs) is studied in this paper. It is found some normal modes supposed to exist could be lost if the phase interference is nearly out of phase at eigenfrequency. To overcome this problem, we proposed a modified FDTD method which can guarantee no interested normal modes will be missed.
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South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Peoples R China
Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R ChinaSouth China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Peoples R China
Kong, Yong-Dan
Chen, Xiang-Lin
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South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Peoples R ChinaSouth China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Peoples R China
Chen, Xiang-Lin
Chu, Qing-Xin
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South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Peoples R ChinaSouth China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Peoples R China