| Original Articles |
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Recovery of Graded Index Profile of Planar Waveguide by Cubic Spline Function |
| YANG Yong;CHEN Xian-Feng;LIAO Wei-Jun;XIA Yu-Xing |
| The State Key Laboratory on Fiber-Optic Local Area Communication Networks and Advanced Optical Communication Systems, Department of Physics, anghai Jiao Tong University, Shanghai 200240 |
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| Cite this article: |
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YANG Yong, CHEN Xian-Feng, LIAO Wei-Jun et al 2007 Chin. Phys. Lett. 24 318-321 |
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Abstract A method is proposed to recover the refractive index profile of graded
waveguide from the effective indices by a cubic spline interpolation
function. Numerical analysis of several typical index distributions show
that the refractive index profile can be reconstructed closely to its
exact profile by the presented interpolation model.
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| Keywords:
03.65.Ge
42.79.Gn
78.20.Ci
81.70.Fy
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Received: 29 August 2006
Published: 24 February 2007
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| PACS: |
03.65.Ge
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(Solutions of wave equations: bound states)
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42.79.Gn
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(Optical waveguides and couplers)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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81.70.Fy
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(Nondestructive testing: optical methods)
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