An all-fiber configuration system configured to generate temporally coherent supercontinuum pulsed emission, said system comprising a sequential structure of all-fiber sections coupled through fused fiber splices (115, 215), including, in the following order: - a fiber laser seed source (110, 210) configured to produce at least one seed pulse with given optical properties including a spectral bandwidth that corresponds to a Fourier transform limited temporal pulse width of 1 picosecond or below at Full Width Half Maximum, FWHM; - a stretching section (120, 220) including an optical fiber (121, 221) configured to temporally stretch the seed pulse; - an amplification section (130, 230) including an active optical fiber (131, 231), doped with a rare earth element, configured to amplify the stretched pulse by progressively stimulating radiation of active ions of the doped active optical fiber (131, 231); - a compressing section (140, 230) configured to temporally compress the amplified pulse; characterized in that there is further comprised - a spectrum broadening section (150, 250) including a single-mode all normal dispersion, ANDi, microstructured fiber (151, 251) configured to spectrally broaden the compressed pulse by a nonlinear effect of Self Phase Modulation, SPM, while maintaining the temporal coherence of the pulse, such that the pulse at an output of the spectrum broadening section (150, 250) has a FWHM spectral bandwidth of 60 nanometers or more, and is compressible down to a temporal pulse width corresponding to the Fourier limit of its spectral bandwidth, wherein the ANDi microstructured fiber (151, 251) has a length of 1 meter or less, a normal group delay dispersion and a normal group velocity dispersion, said group velocity dispersion being lower than 0 ps/nm/km and higher than -30 ps/nm/km in the whole range of wavelengths comprised within ±150 nm of a central wavelength of emission λ c of the fiber laser seed source (110, 210). - a fiber laser seed source (110, 210) configured to produce at least one seed pulse with given optical properties including a spectral bandwidth that corresponds to a Fourier transform limited temporal pulse width of 1 picosecond or below at Full Width Half Maximum, FWHM; - a stretching section (120, 220) including an optical fiber (121, 221) configured to temporally stretch the seed pulse; - an amplification section (130, 230) including an active optical fiber (131, 231), doped with a rare earth element, configured to amplify the stretched pulse by progressively stimulating radiation of active ions of the doped active optical fiber (131, 231); - a compressing section (140, 230) configured to temporally compress the amplified pulse; characterized in that there is further comprised - a spectrum broadening section (150, 250) including a single-mode all normal dispersion, ANDi, microstructured fiber (151, 251) configured to spectrally broaden the compressed pulse by a nonlinear effect of Self Phase Modulation, SPM, while maintaining the temporal coherence of the pulse, such that the pulse at an output of the spectrum broadening section (150, 250) has a FWHM spectral bandwidth of 60 nanometers or more, and is compressible down to a temporal pulse width corresponding to the Fourier limit of its spectral bandwidth,