References
- MARCUSE , D. 1972 . Light Transmission Optics , New York : Van Nostrand Reinhold .
- SODHA , M. S. and GHATAK , A. K. 1977 . Inhomogeneous Optical Waveguides , London : Plenum Press .
- CLARRICOATS , P. J. B. , ed. 1975 . Optical Fibre Waveguides , I.E.E. Reprint Series 1 Stevenage : Peter Peregrinus I.E.E .
- ADAMS , M. J. 1981 . An Introduction to Optical Waveguides , New York : Wiley- Interscience .
- BORN , M. and WOLF , E. 1970 . Principles of Optics , Fourth edition , London : Pergamon Press . Chap. 14
- STOLEN , R. H. , RAMASWAMY , V. , KAISER , P. and PLEIBEL , W. 1978 . Appl. Phys. Lett. , 33 : 699 RAMASWAMY, V., STOLEN, R. H., DIVINO, M. D., PLEIBEL, W., 1979, Appl. Optics, 18, 4080
- RAMASWAMY , V. , FRENCH , W. G. and STANLEY , R. D. 1978 . Appl. Optics , 17 : 3014 SAKAI, J., MACHIDA, S., KIMURA, T., 1981, Optics Lett., 6, 496
- YEH , C. 1962 . J. appl. Phys. , 33 : 3235
- SNYDER , A. W. and YOUNG , W. R. 1978 . J. opt. Soc. Am. , 68 : 297 see also SNYDER, A. W., SAMMUT, R. A., 1979, J. opt. Soc. Am., 69, 1663
- TJADEN , D. L. A. 1978 . Philips J. Res. , 33 : 103 EYGES, L., 1978, Appl. Optics, 17, 1673. EYGES, L., GIANINO, P., WINTERSTEINER, P., 1979, J. opt. Soc. Am., 69, 1226
- ALVAREZ-ESTRADA , R. F. and CALVO , M. L. 1981 . Optica Acta , 28 : 1253
- ALVAREZ-ESTRADA , R. F. and CALVO , M. L. 1982 . Optica Acta , 29 : 667
- LANDAU , L. D. and LIFCHITZ , E. M. 1967 . Mecanique Quantique , 189 – 190 . Moscow : Editions Mir .
- SIMON , B. 1976 . Ann. Phys. , 97 : 279
- MORSE , P. M. and FESCHBACH , H. 1953 . Methods of Theoretical Physics , Vol. I , New York : McGraw-Hill . Chap. 1
- BERRY , M. V. and OZORIO DE ALMEIDA , A. M. 1973 . J. Phys. A , 6 : 1451
- ABRAMOWITZ , M. and STEGUN , I. A. 1965 . Handbook of Mathematical Functions , New York : Dover . Chap. 9