Pulse advancement and delay in an integrated optical two-port ring-resonator circuit: direct experimental observations

Uranus, H.P. and Zhuang, L. and Roeloffzen, C.G.H. and Hoekstra, H.J.W.M. (2007) Pulse advancement and delay in an integrated optical two-port ring-resonator circuit: direct experimental observations. Optics Letters, 32 (17). pp. 2620-2622. ISSN 0146-9592

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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.
Item Type:	Article
Copyright:	© 2007 The Optical Society of America
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Telecommunication Engineering (TE) Integrated Optical MicroSystems (IOMS)
Link to this item:	http://purl.utwente.nl/publications/62043
Official URL:	http://dx.doi.org/10.1364/OL.32.002620
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