Premium
The TM mode in the self‐focusing dielectric planar waveguide
Author(s) -
Lian HanXiong,
Stapleton Shawn
Publication year - 1992
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650051008
Subject(s) - planar , radiation mode , waveguide , optics , wavelength , cutoff frequency , equilibrium mode distribution , coupling (piping) , mode (computer interface) , birefringence , dispersion (optics) , dielectric , cutoff , materials science , transverse mode , mode coupling , physics , single mode optical fiber , optoelectronics , optical fiber , quantum mechanics , laser , computer graphics (images) , computer science , metallurgy , operating system
The TM 0 guided mode in the self‐focusing dielectric planar waveguide and its universal dispersion curves are obtained by an approximation method, The single mode propagation condition of the fundamental mode TE 0 in the self‐focusing planar waveguide is discussed based on the cutoff wavelengths of the higher‐order TE modes and the higher‐order TM modes. The coupling between the fundamental mode TE 0 and the second mode TM 0 is described by the calculation of the birefringence between the TE 0 mode and the TM 0 mode. It was found that the Kerr effect with α > 0 (α is a parameter which describes the film nonlinearity) causes the fields to be confined in the self‐focusing film, which results in the waveguide wavelength decreasing and the cutoff wavelength increasing as α is increased. In addition, the range of the single mode propagation is increased as α is increased. If the self‐focusing planar waveguide can support both the TE 0 mode and the TM 0 mode, then the coupling between the TE 0 mode and the TM 0 mode is very strong and can be decreased by increasing α. © 1992 John Wiley & Sons, Inc.