On-chip supercontinuum generation (SCG) combines the advantage of broad spectral coverage with extremely low footprint, offering an integrated solution for spectroscopy, frequency metrology and sensing applications [1] . SCG has been extensively studied in the past two decades and several platforms based on different materials have been demonstrated. For on-chip SCG, silicon nitride (Si 3 N 4 ) is one of the most promising materials owing to the mature fabrication technology, CMOS compatibility and large transparency window from the visible to the mid-IR [2] . There is a rich landscape of nonlinear dynamics leading to SCG and pumping in the anomalous dispersion regime generally yields larger spectral broadening but with extreme noise-sensitivity. All-normal dispersion regime (ANDi) is not as efficient but this regime increases significantly the phase-stability and coherence property of the supercontinuum, making it more suitable for pulse compression applications. To date, there have been very few demonstrations of ANDi on-chip SCG [3] , [4] . Here, we demonstrate fiber-pumped short-wave infrared SCG in a dispersion engineered uncladded Si 3 N 4 waveguide with extreme polarization sensitivity. Specifically, the waveguide is designed to support both ANDi and anomalous pumping SCG depending on the initial polarization of the pump field (transverse magnetic (TM) or transverse electric (TE) polarization). The uncladded design further offers the possibility to deposit a substance directly on-chip making it a promising approach for sensing.