Numerical observations of negative group velocity in a two-port ring-resonator circuit and its potential for sensing applications


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Uranus, H.P. and Hoekstra, H.J.W.M. (2006) Numerical observations of negative group velocity in a two-port ring-resonator circuit and its potential for sensing applications. In: IEEE/LEOS Benelux Chapter 2006 Annual Symposium, November 30 - December 1, 2006, Eindhoven, The Netherlands.

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Abstract:A two-port ring-resonator circuit is studied theoretically. It is shown that superluminal and negative group velocity (vg) phenomena can occur in both a passive two-port ring-resonator circuit with loss and an active one with gain. We present numerical observations of temporal behavior of a Gaussian pulse passing through circuits having such properties. We also show that when the negative vg is ‘slow’ (|vg|<<c), there is enhanced sensitivity of the phase shift to the ring effective index changes, which suggests its potential for highly sensitive optical sensing applications.
Item Type:Conference or Workshop Item
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Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/66744
Proceedings URL:http://www.photonics-benelux.org/index.php/leosb-documents/symposium-proceedings/2006
Organisation URL:http://www.photonics-benelux.org/
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