Abstract

Relations are investigated between phase index N = c/v_p and group index M = c/v_g of a guided mode in slab dielectric waveguides, where v_p and v_g are the phase and group velocities of the mode, and c is the velocity of light in free space. Examination of the properties of the M vs N curve shows that there exists the upper bound to M, which is expressed in terms of the refractive indices of the film and the substrate.

© 1976 Optical Society of America

Relation between phase and group indices in anisotropic inhomogeneous guiding media

S. Nemoto and T. Makimoto
J. Opt. Soc. Am. 67(1) 124-126 (1977)

Electromagnetic momentum and momentum flow in dielectric waveguides

H. A. Haus and H. Kogelnik
J. Opt. Soc. Am. 66(4) 320-327 (1976)

Further discussion of the relation between phase and group indices in anisotropic inhomogeneous guiding media

S. Nemoto and T. Makimoto
J. Opt. Soc. Am. 67(9) 1281-1283 (1977)

Effective electro-optic coefficient of multilayer dielectric waveguides: Modulation enhancement

A. B. Buckman
J. Opt. Soc. Am. 66(1) 30-34 (1976)

Log-amplitude and phase fluctuations of a guided beam mode in asymmetric slab waveguides

M. Imai and T. Asakura
J. Opt. Soc. Am. 66(7) 668-673 (1976)