“Optical Frequency Combs: Trends in Sources and Applications” offers an overview of the recent advances on the physics, sources, and applications of optical frequency comb technology – one of the most exciting and fast developing research fields in photonics. The book aims at showcasing recent advances through contributions by key players in a multifaceted research ecosystem, and at the same time at providing a valuable service to the community, by offering an as much comprehensive as possible review which, at the same time, highlights challenges to be solved and promising future directions. The main topics covered include: (i) an overview of different platforms for optical frequency combs generation as fibre lasers, quantum cascade lasers, integrated microresonators and waveguides, fibre resonators, electro-optic modulators and nonlinear fibres, multicore fibres; (ii) a selection of applications in different technologies including sensing, spectroscopy, precision metrology and optical clocks, microscopy, radio-frequency generation, distance ranging, and optical communications; (iii) a diverse range of physical methods for frequency comb generation such as modulation, laser mode-locking techniques, dissipative solitons and parametric gain in nonlinear resonators, nonlinear spectral broadening and supercontinuum formation in waveguides. This book will be a valuable resource for academics, researchers, and postgraduate students working and interested in the field of optical frequency combs, and more broadly in photonic technologies too. Key Features:· Edited by authorities in the field, with chapter contributions from subject area leading experts in academia and industry. · Up-to-date with the latest technological developments, applications, and fundamental research from the field. · Describes comb properties depending on source and generation platform, and comb specifications matching to application needs.