Title :
Fiber-optic acoustic and pressure sensors with ultra-high sensitivity
Author :
Jin, Weiwei ; Ma, Jiaxin ; Yang, Fei ; Ho, H.L.
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech. Univ., Hong Kong, China
Abstract :
Pressure/acoustic sensors based on a hollow-core photonic bandgap fiber (HC-PBF) with thin outer-cladding and a fiber-tip micro-cavity with ultra-thin graphene diaphragm are reported. The HC-PBF sensor demonstrates a normalized acoustic responsivity of ~25 dB higher than standard single mode fiber while the fiber-tip sensor has a record high pressure responsivity of well over 1000 nm/kPa.
Keywords :
acoustic transducers; fibre optic sensors; graphene; optical fibre cladding; photonic band gap; pressure sensors; C; HC-PBF; acoustic sensors; fiber-optic sensors; fiber-tip microcavity; hollow-core photonic bandgap fiber; pressure sensors; thin outer-cladding; ultrahigh sensitivity; ultrathin graphene diaphragm; Acoustic sensors; Acoustics; Graphene; Optical fiber sensors; Optical fibers; Sensitivity; Optical fiber sensor; acoustic sensor; graphene; hydrophone; pressure sensor;
Conference_Titel :
Optical Communications and Networks (ICOCN), 2013 12th International Conference on
Conference_Location :
Chengdu
DOI :
10.1109/ICOCN.2013.6617193
