title: Enhancement of acoustic sensitivity of hollow-core photonic bandgap fibers.
abstract: The acoustic pressure sensitivities of hollow-core photonic bandgap fibers (HC-PBFs) with different thicknesses of silica outer-cladding and polymer jacket were experimentally investigated. Experiment with a HC-PBF with 7 μm-thick silica outer cladding and 100 μm-thick Parylene C jacket demonstrated a pressure sensitivity 10 dB higher than the commercial HC-1550-02 fiber and 25 dB higher than a standard single mode fiber. The significant enhancement in sensitivity would simplify the design of fiber hydrophone arrays and increase the number of sensors that could be multiplexed in a single fiber.
authors.affiliation: Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
authors.forename: Fan
authors.initials: F
authors.lastname: Yang
authors.forename: Wei
authors.initials: W
authors.lastname: Jin
authors.forename: Hoi Lut
authors.initials: HL
authors.lastname: Ho
authors.forename: Fuyin
authors.initials: F
authors.lastname: Wang
authors.forename: Wen
authors.initials: W
authors.lastname: Liu
authors.forename: Lina
authors.initials: L
authors.lastname: Ma
authors.forename: Yongming
authors.initials: Y
authors.lastname: Hu