Optical signal processing method and system, electronic device

An optical signal processing method, comprising:

• receiving optical signals to be processed by a spectrum analyzer, and outputting a first wavelength range of the optical signals to be processed by the spectrum analyzer,
• primary filtering the first wavelength range based on a pre-set wavelength threshold of red light to obtain a second wavelength range by filtering out wavelength ranges higher than the pre-set wavelength threshold of red light,
• accessing wavelength ranges of a plurality of groups of ambient light acquired in advance, wherein the wavelength ranges of the plurality of groups of ambient light comprise wavelength ranges of ambient light acquired from a dark environment, wavelength ranges of ambient light acquired from outdoor, and wavelength ranges of ambient light acquired from indoor,
• respectively accessing a plurality of upper limit values and a plurality of lower limit values of the wavelength ranges of the plurality of groups of ambient light, respectively determining weighting parameters corresponding to the wavelength ranges of the plurality of groups of ambient light, and calculating a weighted average value of the plurality of upper limit values and a weighted average value of the plurality of lower limit values based on the weighting parameters to obtain a filtering upper limit value based on the plurality of upper limit values and to obtain a filtering lower limit value based on the plurality of lower limit values, and setting a filtering wavelength range based on the filtering upper limit value and the filtering lower limit value,
• re-filtering the second wavelength range based on the filtering wavelength range to obtain a target filtering range of ambient light wavelengths, and
• filtering the optical signals to be processed with the target filtering range to filter out ambient light from the optical signals to be processed.