Transmission of few-mode fibers at 355 nm using pulsed Nd-YAG laser

The spectral UV properties of silica-based multi-mode and few-modes fibers will be shown using pulsed 355 nm lasers with pulse density levels close to damage threshold. A new experimental set-up with spectral analyses and parallel damaging will be introduced and discussed. Using pulsed UV-laser with good beam quality, low-mode fibers can be studied in respect to spectral losses in a wavelength region significantly below the wavelength of operation.