A system comprising: at least one first arrangement configured to provide a particular radiation which includes at least one first electro-magnetic radiation directed to at least one sample (20, 50) and at least one second electro-magnetic radiation directed to a reference arrangement, wherein at least one of the at least one first electro-magnetic radiation or the at least one second electro-magnetic radiation comprises a plurality of wavelengths, and wherein the at least one first arrangement is configured to spectrally disperse the at least one first electro-magnetic radiation along at least one portion of the at least one sample (20, 50); and at least one second arrangement comprising a spectrometer arrangement which is configured to generate data that corresponds to a spectral interference of (i) light reflected from the at least one sample (20, 50) that is associated with the at least one first electro-magnetic radiation and (ii) light from the reference arrangement associated with the at least one second electro-magnetic radiation, wherein the data is generated by the at least one second arrangement for a plurality of depths and transverse locations for the respective depths associated with the at least one sample (20, 50), and characterized in that the data is generated by the at least one second arrangement based on a correlation between information received at at least one first path length of at least two different path lengths of the reference arrangement and at least one second path length of the at least two different path lengths of the reference arrangement. at least one first arrangement configured to provide a particular radiation which includes at least one first electro-magnetic radiation directed to at least one sample (20, 50) and at least one second electro-magnetic radiation directed to a reference arrangement, wherein at least one of the at least one first electro-magnetic radiation or the at least one second electro-magnetic radiation comprises a plurality of wavelengths, and wherein the at least one first arrangement is configured to spectrally disperse the at least one first electro-magnetic radiation along at least one portion of the at least one sample (20, 50); and wherein at least one of the at least one first electro-magnetic radiation or the at least one second electro-magnetic radiation comprises a plurality of wavelengths, and wherein the at least one first arrangement is configured to spectrally disperse the at least one first electro-magnetic radiation along at least one portion of the at least one sample (20, 50); and at least one second arrangement comprising a spectrometer arrangement which is configured to generate data that corresponds to a spectral interference of (i) light reflected from the at least one sample (20, 50) that is associated with the at least one first electro-magnetic radiation and (ii) light from the reference arrangement associated with the at least one second electro-magnetic radiation, wherein the data is generated by the at least one second arrangement for a plurality of depths and transverse locations for the respective depths associated with the at least one sample (20, 50), and characterized in that the data is generated by the at least one second arrangement based on a correlation between information received at at least one first path length of at least two different path lengths of the reference arrangement and at least one second path length of the at least two different path lengths of the reference arrangement. wherein the data is generated by the at least one second arrangement for a plurality of depths and transverse locations for the respective depths associated with the at least one sample (20, 50), and characterized in that the data is generated by the at least one second arrangement based on a correlation between information received at at least one first path length of at least two different path lengths of the reference arrangement and at least one second path length of the at least two different path lengths of the reference arrangement.