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Fusion Spliced Microfiber Closed-Loop Resonators

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7 Author(s)
Pan Wang ; Dept. of Opt. Eng., Zhejiang Univ., Hangzhou, China ; Lei Zhang ; Zongyin Yang ; Fuxing Gu
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Based on low-loss fusion splicing of microfibers using a CO_2 laser, we demonstrate free-standing microfiber closed-loop resonators. Loaded Q-factors of 110 500 with a finesse of 15.3 are obtained around 1.5- wavelength in a 2.4-mm-diameter closed-loop resonator suspended in air. The possibility of tuning resonant responses by changing the coupling efficiency is also demonstrated.

Published in:

Photonics Technology Letters, IEEE  (Volume:22 ,  Issue: 15 )