Ultra-sensitive active whispering gallery mode sensor in an optofluidic microcapillary with Vernier effect of coupled modes
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Ultrahigh sensitivity is achieved in an optofluidic microcapillary active sensor by utilizing the Vernier effect of coupled whispering gallery modes. A refractive index sensitivity of 2924 nm/RIU is obtained experimentally, which is 7 times higher than the sen... ...
