Pulse Delay and Advancement in SOI Microring Resonators With Mutual Mode Coupling

• In this paper, we experimentally demonstrate continuously tunable pulse propagation in SOI microring resonators with mutual mode coupling, which is induced by nanosized gratings along the ring sidewalls. In the presence of the mutual mode coupling, dispersion-induced group delay is investigated in single-waveguide and double-waveguide coupled single-ring resonators, respectively. In particular, pulse propagation in the drop channel of a double-waveguide coupled resonator is observed and exhibits continuously tunable delay and advancement features in the experiment. Delayed pulses are also obtained at the reflection port of a single-waveguide coupled resonator due to the existence of backward whispering gallery mode (WGM).

Nyckelord

Group delay

microring resonator

pulse propagation

silicon photonics

fast light

optical bistability

ring-resonator

slow

filters

single

propagation

dispersion

line

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)