Air salinity monitoring devices based on no core fibre inner chamber sensing

The utility model relates to a monitoring and the aassessment of marine environment air salinity in the atmospheric environmental monitoring field, for realizing the all -weather monitoring of marine environment air salinity high accuracy, the technical scheme of the utility model comprises, air salinity monitoring devices based on no core fibre inner chamber sensing, which comprises a pumping source, the pumping source advances the light path through one of them input coupling of wavelength division multiplexer WDM, wavelength division multiplexer WDM has two tunnel inputs and output all the way, output interlinkage er -doped fiber EDF, the optical isolator ISO input is connected to er -doped fiber EDF output, the sensor is connected to the optical isolator ISO output, is the sensor the single mode the centreless spectral analysis appearance OSA and another input of wavelength division multiplexer WDM are connected respectively to single mode fiber SNS's structure, output, form the annular chamber. The utili