Micro-conical long-period fiber grating humidity sensor based on micro-nanofiber

The utility model discloses a micro-tapered long-period fiber grating humidity sensor based on a micro-nano optical fiber, which comprises an optical fiber, the middle section of the optical fiber is the micro-nano optical fiber, a micro-tapered fiber grating is arranged on the micro-nano optical fiber, the middle part of the micro-tapered fiber grating is ring-shaped, and the middle part of the micro-tapered fiber grating is annular. The diameter of the micro-conical fiber grating is reduced from the circular ring to the two ends of the micro-conical fiber grating, and the micro-conical fiber grating is covered with a nanofiber membrane. According to the utility model, the sensitivity is improved through the conical structure, the spectrum stability of the grating is obviously improved through the structure obtained through physical deformation and grating, the application scene and the service life of the sensor are further improved, and the responsivity, the stability and the sensitivity of the humidity se