convincing explanation of the development of femtosecond supercontinua, specifically the reduction of solitons from high orders down to the fundamental and the production of dispersive waves during this process. Fully fibre integrated femtosecond sources have since been developed and demonstrated. Other areas of development since 2000 have included: supercontinua sources that operate in the picosecond, nanosecond and CW regimes; the development of fibres to include new materials, production techniques and tapers; novel methods for generating broader continua; novel propagation equations for describing supercontinuum in photonic nanowires, and the development of numerical models to explain and aid understanding of supercontinuum generation. Unfortunately, an in depth discussion of these achievements is beyond this article but the reader is referred to an excellent review article by Dudley et al. Supercontinuum generation in integrated photonics platforms While optical fibers have been the workhorse of supercontinuum generation since its inception, integrated waveguide based sources of supercontinuum have become an active area of research in the twenty first century. These chip-scale platforms promise to miniaturize supercontinuum sources into devices that are compact, robust, scalable, mass producible and more economical. Such platforms also allow dispersion engineering by varying the cross-sectional geometry of the waveguide. Silicon bases materials such as silica, silicon nitride, crystalline and amorphous silicon have demonstrated supercontinuum generation spanning the visible, near-infrared and mid-infrared regions of the electromagnetic spectrum. As of 2015, the widest supercontinuum generated on chip extends from 470 nm in the visible to 2130 nm for the infrared wavelength region. Description of dynamics of continuum formation in fiber In this section we will briefly discuss the dynamics of the two main regimes in which supercontinua are generated in fibre. As previously stated a supercontinuum occurs through the interaction of many nonlinear processes to cause extensive spectral broadening. Many of these processes such as: self-phase modulation, four-wave mixing and soliton based dynamics have been well understood, individually, for some time. The breakthroughs in recent years have involved understanding and modelling how all these processes interact together to generate supercontinua and how parameters can be engineered to enhance and control continuum formation. The two main regimes are the soliton fission regime and modulation instability regime. The physical processes can be considered to be quite similar and the descriptions really enable us to distinguish between the processes that drive the continuum formation for varying pump conditions. A third regime, pumping in the normal dispersion region,