Home > > PRODUCTFiber optic hydrophone
The 980nm pumping laser light from the light source is incident on the DFB fiber laser probe, and then the fiber laser emits the laser light corresponding to the wavelength of the fiber grating. The laser wavelength will vary with the intensity of the acoustic signal being measured. At the receiving end, each wavelength signal is separated and detected by a wavelength division multiplexer, so that a water acoustic signal detected by each probe can be obtained.
Product Features
1, the use of innovative air gap phase-shifting fiber grating hydrophone probe to achieve underwater acoustic and pressure, depth signal detection of high-sensitivity hydrophone than the existing similar fiber optic sensor hydrophone probe sensitivity of about 10 times higher ;
2, the use of the program used in the new structure, in the anti-hydrostatic pressure, anti-large acceleration shock, and reliability and durability, and other aspects of fiber optic sensors more advantages;
The fiber-optic F-P interference type hydrophone probe made of new material improves the sensitivity and response frequency of the system, and proposes a new signal processing method to solve the problem of sensor phase drift.
Tunable Phase - shifted Fiber Bragg Gratings Influence of measured air gap on grating spectrum
Product parameters
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parameter
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Unit Sensitivity
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≤ 50 Pa/√Hz @ 1kHz
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Number of sensing cells
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≥64
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Response frequency
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10Hz-30 kHz
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Directivity of hydrophone array
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>20dB
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Transmission distance
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> 60km
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Applications
1, the navy underwater equipment
2, underwater security equipment
3, offshore oil exploration
4, marine geological environment survey equipment
5, geophysics
6, and supporting the underwater robot
