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Inverted-wedge silica resonators for controlled and stable coupling
Fang Bo, Steven He Huang, Sahin Kaya Ozdemir +3
Silica microresonators with an inverted-wedge shape were fabricated using conventional semiconductor fabrication methods. The measured quality factors of the resonators were greate…
Tunable add-drop filter using an active whispering gallery mode microcavity
Faraz Monifi, Sahin Kaya Ozdemir, Lan Yang
An add-drop filter (ADF) fabricated using a whispering gallery mode resonator has different crosstalks for add and drop functions due to non-zero intrinsic losses of the resonator.…
Nonreciprocal light transmission in parity-time-symmetric whispering-gallery microcavities
Bo Peng, Sahin Kaya Ozdemir, Fuchuan Lei +7
Optical systems combining balanced loss and gain profiles provide a unique platform to implement classical analogues of quantum systems described by non-Hermitian parity-time- (PT-…
Optical Detection of Single Nanoparticles with a Sub-wavelength Fiber-Taper
Jiangang Zhu, Sahin Kaya Ozdemir, Lan Yang
A nanoparticle detection scheme with single particle resolution is presented. The sensor contains only a taper fiber thus offering the advantages of compactness and installation fl…
Statistics of multiple-scatterer induced frequency splitting in whispering gallery microresonators and microlasers
Lina He, Sahin Kaya Ozdemir, Jiangang Zhu +3
We investigate numerically and experimentally the statistics of the changes in the amount of frequency splitting upon the adsorption of particles one-by-one into the mode volume of…
Detection and size measurement of individual hemozoin nanocrystals in aquatic environment using a whispering gallery mode resonator
Woosung Kim, Sahin Kaya Ozdemir, Jiangang Zhu +3
We, for the first time, report the detection and the size measurement of single nanoparticles (i.e. polystyrene) in aquatic environment using mode splitting in a whispering gallery…