Highly Sensitive Torsion Sensor Based on Side-Hole-Fiber Sagnac Interferometer Liu, Ting ; Zhang, Hao ; Xue, Lifang ; Liu, Bo ; Liu, Haifeng ; Huang, Bangcai ; Sun, Jianjun ; Wang, Dongbo Abstract Publication: IEEE Sensors Journal Pub Date: September 2019 DOI: 10.1109/JSEN.2019.2914230 Bibcode: 2019ISenJ..19.7378L