Abstract

A novel packaged microsphere-taper coupling system which consists of a glass tube and two glass plates is proposed and demonstrated in this paper. We analyze the impact of the microsphere distortion on the resonant spectrum and it is observed that a very high quality factor (Q) up to 1.08×108 can be achieved by optimizing the microsphere position and orientation relative to the fiber taper. The maintenance of Q and a stable spectrum are realized by placing the packaged structure in a sealed organic glass box. Furthermore, to verify the practicability of the sealed device, thermal sensing experiments are carried out, which indicates the excellent convenience of the device with a resolution of 1.12×104°C. The portability and robustness of the packaged structure make it strikingly attractive and illustrate its potential in practical microcavity sensors and lasers.

© 2015 Optical Society of America

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