Injection locking and switching operations of a novel retro-reflector-cavity-based semiconductor micro-ring laser

Injection locking and switching characteristics are investigated in the novel retro-reflector-cavitiy-based semiconductor ring laser with equivalent circular radius of 26 mu m. The allowed de-tuning range is up to similar to 3 GHz wide and the highest side mode suppression ratio of similar to 43.7 dB can be achieved. A fast response speed of similar to 70 ps to the cavity is achieved, which indicates that this device can be utilized as an all optical switch at a data rate of 10 Gb/s or higher.