Development of an optical micro hydrophone for mass production

Asanuma, Hiroshi; Tanaka, Mitsuyuki; Niitsuma, Hiroaki; Sato, Ryota

doi:10.1190/1.2370294

Cited by 1 publication

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, this structure has a maximum hydrostatic pressure resistance of 1.5 MPa and is not suitable for deep sea applications of fiber optic FP cavity hydrophone. Hiroshi Asanuma et al reported a miniature fiber optic FP cavity hydrophone based on an water cavity structure [4] . Although this structure is well adapted to the hydrostatic pressure, it is simply an air-cavity structure filled with water, which leads to a dramatic decrease in the reflectivity of the fiber optic end surfaces and seriously affects the sensitivity of the fiber optic FP-cavity hydrophone.…”

Section: Introductionmentioning

confidence: 99%

Research on the reflectivity of the end face of film-coated optic fiber for application in fiber optic Fabry-Perot cavity hydrophone

Cheng

Qin

et al. 2023

Second International Conference on Electronic Information Engineering and Computer Communication (EIECC 2022)

View full text Add to dashboard Cite

Fiber optic Fabry-Perot cavity hydrophone have the advantages of high sensitivity, simple structure and the resistance to electromagnetic interference, making them as a research hotspot. Filling the Fabry-Perot cavity with water media would lead to a decrease in the reflectivity of the fiber end face, thus causing a decrease in the sensitivity of the fiber FP cavity hydrophone. In this work, the magnetron sputtering technology was utilized with alumina as the sputtering target. A thin film was deposited to the end face of the optical fiber to improve the reflectivity of the end face of the fiber. Coated fibers with varied film thicknesses were prepared and their reflectivity was characterized. The experimental results showed that the reflectivity of the end face of the optical fiber in water media can be increased by an order of magnitude to 2.61%, which is an excellent basis for the development of a highly sensitive optical fiber Fabry-Perot cavity hydrophone.

show abstract

Section: Introductionmentioning

confidence: 99%