Device for perceiving oceanic turbulence and oceanic particles based on laser interference

[0015] Specific implementation mode one: the following combination figure 1 This embodiment will be specifically described. This embodiment is a device for sensing ocean turbulence and ocean particles based on laser interference, which is characterized by comprising: a waterproof package shell 1, a first waterproof light-transmitting window 2, a second waterproof light-transmitting window 4, a continuous single longitudinal mode laser 3, Single-mode optical fiber, first optical fiber splitter 5-1, second optical fiber splitter 5-2, third optical fiber splitter 5-3, fiber-spatial optical coupler 6, filter plate 7, polarizer 8, Spatial light-fiber coupler 9, fiber combiner 10, first photodetector 11-1, second photodetector 11-2, third photodetector 11-3, signal supply cable 12 and control analysis system 13 ;

[0016] The laser light is emitted by the continuous single longitudinal mode laser 3, and is divided into two paths by the second optical fiber beam splitter 5-2 via the s

[0023] Embodiment 2: This embodiment is a further description of Embodiment 1. The difference between this embodiment and Embodiment 1 is that the control and analysis system (13) controls the first photodetector (11-1), the second The sequential electrical signals transmitted by the second photodetector (11-2) and the third photodetector (11-3) perform the following analysis process:

[0024] Step 1: put the device into the water area to be tested, at this time, the control analysis system (13) passes through the first photodetector (11-1), the second photodetector (11-2) and the third photodetector (11-1) 3) Simultaneously collect a section of sequential electrical signal I A (t), I B (t), I C (t), the sampling time is not less than 1 minute, and the sampling frequency is not less than 50Hz;

[0025] Step 2: The control and analysis system (13) performs primary filtering on the three-segment signals obtained in step 1: if the control and analysis system (13) provides photode

[0036] Embodiment 3: This embodiment is a further description of Embodiment 1. The difference between this embodiment and Embodiment 1 is that the diameter of the light beam incident on the water body in the device is 0.5cm-1cm.