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Millimeter-Sized Microfiber Coil Resonators With Enhanced Quality Factors by Increasing Coil Numbers

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3 Author(s)
Yi-Chang Hsieh ; Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, Taiwan ; Tz-Shiuan Peng ; Lon A. Wang

Microfiber coil resonators (MCRs) with quality factors as high as ~470 000 and small size (<; 2 mm3) were fabricated and characterized. Both simulated and experimental results showed that the average full-width at half-maximum of the resonant dips decreased with the number of rings, providing a proof of the dependence of increasing quality factor upon the number of rings, even when the gaps among adjacent rings were not strictly uniform. Compared to the previous reports, a multi-ring MCR can thus offer a new choice of obtaining a microfiber resonator with high quality factor.

Published in:

IEEE Photonics Technology Letters  (Volume:24 ,  Issue: 7 )