Abstract
A tricyclodecane polymer film with vanadyloxophthalocyanine was prepared on a low refractive index polymer film by spin coating. It showed a guided wave mode (GWM) dependent on the refractive index and thickness of each layer as minimum reflectance in near infrared spectrum. The width of GWMs was found to considerably decrease with increasing thickness of the low refractive index polymer. The reflectance at the GWM position was optically modulated by ultrafast complex refractive index changes upon femtosecond laser excitation. The present results will be used for ultrafast all-optical light modulation or switching with high wavelength resolution in photonic network systems.
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