Abstract
We propose and realize a packaged structure for the microcylinder–taper coupling system by only gluing a glass tube and two glass plates together. Our package method avoids embedding the coupling system into the polymer, thus leaving the whispering gallery mode evanescent fields available for environmental sensing. The excitation of localized high-order axial modes in the cylindrical resonator fabricated by using a fusion splicer is demonstrated and a quality factor (Q) up to 1.4×107 is obtained. The Q maintenance and stable spectrum are realized by sealing the packaged device in a clean box. Moreover, the robustness of the packaged structure is also tested, demonstrating its remarkable antivibration ability. The portability and robustness of the device make it attractive in practical applications such as sensors, lasers, and especially some applied areas in strong vibration environments.
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