A leaky mode or tunneling mode in an optical fiber or other waveguide is a mode having an electric field that decays monotonically for a finite distance in the transverse direction but becomes oscillatory everywhere beyond that finite distance. Such a mode gradually "leaks" out of the waveguide as it travels down it, producing attenuation even if the waveguide is perfect in every respect. In order for a leaky mode to be definable as a mode, the relative amplitude of the oscillatory part (the leakage rate) must be sufficiently small that the mode substantially maintains its shape as it decays.
Leaky modes correspond to leaky rays in the terminology of geometric optics. The propagation of light through optical fibre can take place via meridional rays or skew rays. These skew rays suffer only partial reflection while meridional rays are completely guided. Thus the modes allowing propagation of skew rays are called leaky modes. Some optical power is lost into clad due to these modes.
References
J. Hu and C. R. Menyuk, "Understanding leaky modes: slab waveguide revisited"
Liu, Hsuan-Hao; Chang, Hung-Chun (2013). "Leaky Surface Plasmon Polariton Modes at an Interface Between Metal and Uniaxially Anisotropic Materials". IEEE Photonics Journal. 5 (6): 4800806. Bibcode:2013IPhoJ...500806L. doi:10.1109/JPHOT.2013.2288298.
Liu, Hsuan-Hao; Chang, Hung-Chun (2016). "High-Resolution Analysis of Leaky Modes in Surface Plasmon Stripe Waveguides". J. Lightwave Technol. 34 (11): 2752–2757. Bibcode:2016JLwT...34.2752L. doi:10.1109/JLT.2016.2544843.
leaky, mode, leaky, mode, tunneling, mode, optical, fiber, other, waveguide, mode, having, electric, field, that, decays, monotonically, finite, distance, transverse, direction, becomes, oscillatory, everywhere, beyond, that, finite, distance, such, mode, grad. A leaky mode or tunneling mode in an optical fiber or other waveguide is a mode having an electric field that decays monotonically for a finite distance in the transverse direction but becomes oscillatory everywhere beyond that finite distance Such a mode gradually leaks out of the waveguide as it travels down it producing attenuation even if the waveguide is perfect in every respect In order for a leaky mode to be definable as a mode the relative amplitude of the oscillatory part the leakage rate must be sufficiently small that the mode substantially maintains its shape as it decays Leaky modes correspond to leaky rays in the terminology of geometric optics The propagation of light through optical fibre can take place via meridional rays or skew rays These skew rays suffer only partial reflection while meridional rays are completely guided Thus the modes allowing propagation of skew rays are called leaky modes Some optical power is lost into clad due to these modes References EditJ Hu and C R Menyuk Understanding leaky modes slab waveguide revisited Liu Hsuan Hao Chang Hung Chun 2013 Leaky Surface Plasmon Polariton Modes at an Interface Between Metal and Uniaxially Anisotropic Materials IEEE Photonics Journal 5 6 4800806 Bibcode 2013IPhoJ 500806L doi 10 1109 JPHOT 2013 2288298 Liu Hsuan Hao Chang Hung Chun 2016 High Resolution Analysis of Leaky Modes in Surface Plasmon Stripe Waveguides J Lightwave Technol 34 11 2752 2757 Bibcode 2016JLwT 34 2752L doi 10 1109 JLT 2016 2544843 This article incorporates public domain material from Federal Standard 1037C General Services Administration in support of MIL STD 188 This optics related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Leaky mode amp oldid 1005469645, wikipedia, wiki, book, books, library,
