Recently developed, highly effective technologies enabling slow light propagation as a tunable feature in photonic devices, are reviewed. Several applications in ICT are also demonstrated. Controlling the group velocity of light offers a broadband solution to a necessary functionality in microwave and millimeter wave systems: a tunable time-delay/phase-shift line. Moreover, slow light can highly enhance the nonlinearity, thus opening the way to on chip, nonlinear photonics.
Kirsten Emilie Moselund, Chang Won Lee
Tobias Kippenberg, Viacheslav Snigirev, Grigorii Likhachev
Nicolas Grandjean, Jean-François Carlin, Raphaël Butté