FIELD: measurement technology; hydroacoustics. SUBSTANCE: two fiber coils are optically coupled with coherent light source and photodetector at wavelength λ1 to form first interferometer One of fiber coils is optically coupled, in addition, with second light source and second photodetector at wavelength λ2 to form second interferometer. Spectral isolation of interferometers enables simultaneous measurements of sound pressure level and its gradient. EFFECT: enlarged functional capabilities. 3 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FIBER-OPTIC SOUND PRESSURE GRADIENT DETECTOR | 1994 |
|
RU2091984C1 |
| FIBER-OPTICAL VIBRATION TRANSDUCER | 1994 |
|
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| FIBER-OPTICAL SUBMARINE DETECTOR | 1993 |
|
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| FIBER-OPTICAL TRANSDUCER OF HYDROPHYSIC PARAMETERS OF SEA WATER | 1993 |
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| FIBER-OPTIC HEAT-LOSS ANEMOMETER | 1993 |
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| FIBER-OPTIC DEVICE FOR MEASURING HYDRO-PHYSICAL PARAMETERS OF SEA MEDIUM | 1993 |
|
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| FIBER-OPTICAL HYDROPHONE WITH COMPENSATION OF HYDROPHYSICAL INTERFERENCE | 1996 |
|
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| TWO-RING FIBER-OPTICAL HYDROPHONE | 1994 |
|
RU2106072C1 |
| FIBER-OPTIC SENSOR OF LIQUID CURRENT VELOCITY HEAD | 1993 |
|
RU2060505C1 |
| FIBRE-OPTICAL ACCELEROMETER | 1996 |
|
RU2115933C1 |
