Pulse advancement and delay in an integrated-optical two-port ring-resonator circuit: direct experimental observations |
| |
Authors: | Uranus H P Zhuang L Roeloffzen C G H Hoekstra H J W M |
| |
Institution: | Department of Electrical Engineering, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands. |
| |
Abstract: | We report experimental observations of the negative-group-velocity (v(g)) phenomenon in an integrated-optical two-port ring-resonator circuit. We demonstrate that when the v(g) is negative, the (main) peak of output pulse appears earlier than the peak of a reference pulse, while for a positive v(g), the situation is the other way around. We observed that a pulse splitting phenomenon occurs in the neighborhood of the critical-coupling point. This pulse splitting limits the maximum achievable delay and advancement of a single device as well as facilitating a smooth transition from highly advanced to highly delayed pulse, and vice versa, across the critical-coupling point. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|