Abstract

We present fusing of a fiber micro-knot by a ${\mathrm{CO}}_2$ laser beam. We demonstrate tuning of the coupling strength and tuning of the spectral resonance of the micro-knot by the fusing process. The experimental results reveal that fusing the fiber micro-knots increases the coupling efficiency and improves the robustness and the stability of the micro-knots.

© 2016 Optical Society of America

Optical micro-knot resonator hydrophone

J M De Freitas, T A Birks, and M Rollings
Opt. Express 23(5) 5850-5860 (2015)

Dynamical range and stability enhancement in electrically fused microknot optical resonators

Alexandra Logvinova, Gal Gottlieb, Shir Shahal, Moti Fridman, and Yoav Linzon
Appl. Opt. 56(20) 5726-5730 (2017)

Miniature fiber-optic temperature sensors based on silica/polymer microfiber knot resonators

Yu Wu, Yun-Jiang Rao, Yi-huai Chen, and Yuan Gong
Opt. Express 17(20) 18142-18147 (2009)

Slow light and fast light in microfiber double-knot resonator with a parallel structure

Yiping Xu, Liyong Ren, Chengju Ma, Xudong Kong, and Kaili Ren
Appl. Opt. 55(30) 8612-8617 (2016)

Ultra-high harmonic mode-locking with a micro-fiber knot resonator and Lyot filter

Tianqi Wang, Duidui Li, Zhaoyu Ren, Xuemei Cheng, Zhipei Sun, and Jintao Bai
Opt. Express 30(9) 14770-14781 (2022)