victoria secret
Newbie level 2

what is 'wavelength interrogation or angular interrogation' in these sentence?
' the sensitivity of SPR refractive index sensors using wavelength interrogation and intensity measurement increases with the wavelength'.
' While the operating range of intensity-measurement-based SPR sensors is naturally limited due to the limited width of the SPR dip, the operating range of angular and wavelength interrogation-based SPR sensors may be made much wider'.
thanks.
' the sensitivity of SPR refractive index sensors using wavelength interrogation and intensity measurement increases with the wavelength'.
' While the operating range of intensity-measurement-based SPR sensors is naturally limited due to the limited width of the SPR dip, the operating range of angular and wavelength interrogation-based SPR sensors may be made much wider'.
thanks.