Internally-tuning whispering-gallery modes in a high-Q conical microresonator for electromagnetically induced transparency-like effect

•A single conical microresonator (CMR) is fabricated by combining arc discharge and pull method.•We report a tunable EIT-like effect in a CMR coupled by a tapered fiber waveguide theoretically and experimentally. By axially changing the coupled point, we observe dynamic Fano and EIT-like lineshape.•Fano and EIT-like effect with a quality (Q) factor are achieved by scanning the varied diameter carefully originating from approximate two resonant frequencies in a wavelength apart. In addition, these experimental observations can be well fitted with the coupled mode theory.