Robust microfiber photonic microcells for sensor and device applications.
We report the fabrication of in-line photonic microcells (PMCs) by encapsulating tapered microfibers (MFs) inside glass tubes. The encapsulation isolates MFs from external environment and makes them more suitable for real-world applications. Based on PMCs with encapsulated highly birefringent (Hi-Bi) MFs, we demonstrated pressure, temperature and refractive index (RI) sensors as well as long period grating devices. A fiber Sagnac loop interferometer incorporating a Hi-Bi microfiber PMC demonstrated RI sensitivity of 2024 nm per RI unit (nm/RIU) in gaseous environment and 21231 nm/RIU in water.
Wa
W
Jin
Haifeng
H
Xuan
Chao
C
Wang
Wei
W
Jin
Yiping
Y
Wang
D001718:Birefringence; D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007368:Interferometry / Q000295:instrumentation*; D055100:Optical Fibers; D017785:Photons; D012031:Refractometry / Q000295:instrumentation*