Publication # 062

H. A. Haus and D. A. B. Miller, "Attenuation of Cutoff Modes and Leaky Modes of Dielectric Slab Structures," IEEE J. Quantum Electron. QE-22, 310-324 (1986).

A simple formula is developed for the attenuation constant of higher order cutoff modes of a dielectric slab guide and of the modes of leaky guides. The formula is based on a perturbation analysis that reduces the problem to that of the transmission characteristic of a Fabry-Perot resonator. Under certain approximations, the formula for leaky guides reduces to that of D.B. Hall and C. Yeh (1973) but the formula has a wider range of applicability

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