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An exhaustive model for designing microsphere and microbubble sensing set-ups is illustrated. The computer code is validated via the comparison of the simulation with the experiment. The considered system employs a pair of identical LPGs with a fiber taper in between. The microsphere and microbubble resonators are coupled via the tapered fiber. The pair of identical LPGs allow multiple selective coupling...
The paper is a review on modelling and experimental results regarding microsphere resonators. The applications of the whispering-gallery-modes (WGMs) resonances in conventional glass microspheres to perform chemical spectroscopy, biomedical sensing, low threshold lasing are recalled. The behaviour of silica microsphere coated via silica hafnia 70SiO2-30HfO2 and activated with 0.3% mol Er3+ for NIR...
In this paper, the design of a lasing system constituted by a tapered fiber coupled to Er3+-doped microsphere and operating in Mid-IR wavelength range is numerically investigated. The device performance has been evaluated by means of a dedicated 3D numerical model based on the coupled mode theory and solving the rate equations. In particular, a detailed rate equations model including the main Er3+...
A mid-IR lasing system based on a tapered fiber coupled to an -doped microsphere has been modeled and numerically investigated. In order to design and optimize the device performance, a dedicated 3-D numerical code exploiting the coupled mode theory and the rate equations model has been developed. The main energy level transitions among the ions, the most relevant secondary...
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