Front Cover: Nonlinear photonic waveguides for on‐chip optical pulse compression (Laser Photonics Rev. 9(3)/2015)

Fundamental to the temporal compression of optical pulses is the generation of new spectral content through amedium's nonlinearity and their synchronization in time using an appropriate amount of optical dispersion. The ability to generate large amounts of dispersion on a chip as well as large nonlinear parameters have recently enabled integrated optical pulse compressors with high compression factors to be demonstrated.We review recent research progress in the field as well as opportunities for further development. (Picture: D. T. H. Tan et al., 10.1002/lpor.201400420 pp. 294–308, in this issue)