Optical microresonator offer a unique solution to the ever increasing demand for more telecommunications bandwidth. Using solitonic optical frequency combs generated from our crystalline optical microresonator a telecom channel generator with spacing ranging from 10 GHz to 50 GHz can be created across the both the L and C band. In the laboratory 20 Tbit/s communication rates have already been demonstrated  using optical microresonators.
 J. Pfeifle, et al., "Full C and L-Band Transmission at 20 Tbit/s Using Cavity-Soliton Kerr Frequency Combs" Conf. on Lasers and Electro-Optics (CLEO'15), Postdeadline Paper Digest, San Jose (CA), USA, (2015)