Acta Optica Sinica, Volume. 6, Issue 7, 620(1986)
Bending losses of asymmetric slab waveguides
Based on the model of a four-layer dielectric slab wave-guide, the eigenvalue equation of a bent asymmetric slab wave-guide is derived from Maxwell s electromagnetic theory. The bending loss formula is then obtained with the change in propagation constant taken into consideration by perturbation method. Numerical calculations indicate that the formula is very accurate.
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CAO ZHANGQI, YANG FUZI, FANG JUNXIN. Bending losses of asymmetric slab waveguides[J]. Acta Optica Sinica, 1986, 6(7): 620