title: Miniature highly-birefringent microfiber loop with extremely-high refractive index sensitivity.
abstract: A miniature polarimetric interferometer with the twist of a highly-birefringent microfiber is demonstrated. Good transmission spectral characteristics, which are co-governed by the birefringence and the twist degree of the microfiber, are investigated. The structure exhibits extremely-high sensitivity of around 24,373 nm per refractive-index unit and excellent temperature stability of better than 0.005 nm/°C. Featured with compactness, reconfigurability, stability, robustness, and compatibility with other fiberized components, our device has potential in tunable filtering, sensing, multi-wavelength lasing, and etc.
authors.affiliation: Institute of Photonics Technology, Jinan University, Guangzhou 510632, China.
authors.forename: Lipeng
authors.initials: L
authors.lastname: Sun
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.forename: Yanzhen
authors.initials: Y
authors.lastname: Tan
authors.forename: Xiang
authors.initials: X
authors.lastname: Shen
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Xie
authors.forename: Shuai
authors.initials: S
authors.lastname: Gao
authors.forename: Bai-Ou
authors.initials: BO
authors.lastname: Guan
mesh_terms: D001718:Birefringence; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007368:Interferometry / Q000295:instrumentation*; D008904:Miniaturization; D012031:Refractometry / Q000295:instrumentation*