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Determined polarization state of light is required in nonlinear opticsapplications related to ultrashort and single-cycle light pulse generation.Such short time scales require up to full octave of spectral width of light.Fiber-based, pulse-preserving and linearly polarized supercontinuum can meetthese requirements. We report on the development - from linear simulations ofthe fiber structure, through fabrication of physical fibers to their versatilecharacterization - of polarization maintaining, highly nonlinear photoniccrystal fibers, intended for femtosecond pumping at a wavelength of 1560 nm.Full octave of linearly polarized light around this wavelength would enable tocover amplification bandwidths of the three major fiber amplifiers fromytterbium doped systems up to thulium and holmium doped fiber amplifiers, witha coherent, linearly polarized seed signal. At the same time, an all-normalchromatic dispersion profile over an entire transmission window, and smalldispersion of nonlinearity in the developed fibers, would facilitate use ofcommercially available femtosecond fiber lasers as pump sources for thedeveloped fibers.

Development of highly nonlinear polarization maintaining fibers with normal dispersion across entire transmission window