Ayan, ArmanLiu, JunqiuKippenberg, Tobias JBres, Camille-Sophie2024-03-182024-03-182024-03-182023-11-2010.1364/OE.502648https://infoscience.epfl.ch/handle/20.500.14299/206291WOS:001124481100001Broadband continuous-wave parametric gain and efficient wavelength conversion is an important functionality to bring on-chip. Recently, meter-long silicon nitride waveguides have been utilized to obtain continuous-traveling-wave parametric gain, establishing the great potential of photonic-integrated-circuit-based parametric amplifiers. However, the effect of spiral structure on the performance and achievable bandwidth of such devices have not yet been studied. In this work, we investigate the efficiency-bandwidth performance in up to 2 meter-long waveguides engineered for broadband operation. Moreover, we analyze the conversion efficiency fluctuations that have been observed in meter-long Si3N4 waveguides and study the use of temperature control to limit the fluctuations.Physical SciencesSupercontinuum GenerationWavelength Conversiontext::journal::journal article::research article