journal6 ›› 2011, Vol. 32 ›› Issue (5): 59-61.

• Physics and electronics • Previous Articles     Next Articles

Study on the Sensitivity of Symmetrical  Metal-Cladding Dielectric Waveguide


  1. (Department of Physics and Electronic Science,Tongren University,Tongren,554300,Guizhou China)
  • Online:2011-09-25 Published:2012-04-06

Abstract: By applying the perturbation approximation method to dispersion equation of symmetrical metal-Cladding dielectric medium waveguide,the author finds that when the thickness of waveguide layer decreases to sub millimeter range,the effective index will approach  zero,and the ultrahigh-order modes are no longer related to polarization.Then the author defines  the sensitivity of waveguide,and gets its relationship with effective index,thickness,wavelength and dielectric constant.When the effective index approaches zero,the ultrahigh-order modes will have a super high sensitivity.This theory is of certain directive significance to biosensor and photoelectronic device.

Key words: optical waveguides;the dispersion equation;effective refractive index, sensitvity

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