The European Physical Journal D

, Volume 46, Issue 1, pp 157–164 | Cite as

Radiation induced force between two planar waveguides

  • F. Riboli
  • A. RecatiEmail author
  • M. Antezza
  • I. Carusotto
Optical Physics


We study the electromagnetic force exerted on a pair of parallel slab waveguides by the light propagating through them. We have calculated the dependence of the force on the slab separation by means of the Maxwell–Stress tensor formalism and we have discussed its main features for the different propagation modes: spatially symmetric (antisymmetric) modes give rise to an attractive (repulsive) interaction. We have derived the asymptotic behaviors of the force at small and large separation and we have quantitatively estimated the mechanical deflection induced on a realistic air-bridge structure.


03.50.De Classical electromagnetism, Maxwell equations 41.20.-q Applied classical electromagnetism 42.79.Gn Optical waveguides and couplers 


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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Authors and Affiliations

  • F. Riboli
    • 1
  • A. Recati
    • 2
    Email author
  • M. Antezza
    • 2
  • I. Carusotto
    • 2
  1. 1.LENSFirenzeItaly
  2. 2.CNR-INFM Center on Bose-Einstein Condensation and Dipartimento di Fisica, Universitá di TrentoPovo TrentoItaly

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