An optical fiber finger and a detection method for detecting the flexibility of the prostate
A technology of prostate and optical fiber, which is applied in the field of optical fiber finger and detection for the detection of prostate flexibility, can solve the problems of inaccurate location of lesions, large size of detection part, and inapplicability of prostate, etc., so as to achieve easy networking and improve accuracy efficiency, light weight effect
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[0054] According to the idea of the present invention, the excitation source can use a sine wave generator and input a stable 20Hz driving signal to modulate the pressure of the diaphragm in the photonic finger, so as to achieve the purpose of modulating the diaphragm displacement. The output wavelength of the single-frequency laser is set at 1532nm, which is used to modulate the pressure of the photonic finger diaphragm, convert it into an intensity signal output, and receive it with a photodiode detector. Figure 4 It is the change diagram of the distance between the 45-degree angle fiber end face and the diaphragm obtained by the conversion and demodulation of the photoelectric detector. It can be seen from the figure that the distance changes in the order of ~μm when placed statically, and the relative change is less than 1.5‰, which has high stability. Figure 5 It is the waveform output by the fiber finger under the excitation of irregular dynamic signal.
[0055] For...
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