Wideband parametric processing with 1-dB bandwidth of 40nm using dispersion stable PM-HNLF

We confirm the widest parametric processing bandwidth of a dispersion stable polarisation maintaining (PM) highly nonlinear fibre (HNLF) among PM-HNLFs. A wavelength conversion and a quasi-phase-matched FOPA with gain of 19 dB have 1-dB bandwidth of 40 nm.