Acta Optica Sinica, Volume. 6, Issue 10, 930(1986)
Approximate analysis of guided modes in strip waveguides
In this paper we present the perturbation method and variational method used in evaluating propagation constants and field distributions of guided modes in strip waveguides. The formulas are simple in form and easy to apply. The results are more accurate than those obtained by using other approximate methods and agree well with exact computer results.
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QIAO LI, SHE SHOUXIAN. Approximate analysis of guided modes in strip waveguides[J]. Acta Optica Sinica, 1986, 6(10): 930