1. Marcuse, D., Theory of Dielectric Waveguides, Academic Press, 1974.
2. Adams, M. J., An Introduction to Optical Waveguides, 250-257, 250-257, 1981.
3. Cherin, A. H., An Introduction to Optical Fibers, 85-98, 85-98, 1987.
4. Snyder, A. W. and J. D. Love, Optical Waveguide Theory, 248-255, 248-255 and 311-315, 1983.
5. Gloge, D., "Dispersion in weakly guiding fibers," Appl. Opt., Vol. 10, 2442-2445, 1971.
6. Gloge, D., "Propagation effects in optical fibers," IEEE Trans. Microwave Theory Tech., Vol. 23, 106-120, 1975.
doi:10.1109/TMTT.1975.1128511
7. Gloge, D., "Weakly guiding fibers," Appl. Opt., Vol. 10, 2252-2258, 1971.
8. Chu, L. J., "Electromagnetic waves in elliptic hollow pipes of metal," J. Appl. Phy., Vol. 9, 583-591, 1938.
doi:10.1063/1.1710459
9. Dyott, R. B. and J. R. Stern, "Group delay in glass fiber waveguides," Electronics Letters, Vol. 7, 82-84, 1971.
10. Singh, U. N., O. N. Singh II, P. Khastgir, and K. K. Dey, "Dispersion characteristics of a helically cIadded step-index optical filber analytical study," J. Opt. Soc. Am. B, 1273-1278, 1995.
11. Kumar, D. and O. N. Singh II, "Modal characteristics equation and dispersion curves for an elliptical step-index fiber with a conducting helical winding on the core-cladding boundary An analytical study," IEEE Journal of Light Wave Technology, Vol. 20, No. 8, 1416-1424, 2002.
doi:10.1109/JLT.2002.800799
12. Kumar, D. and O. N. Singh II, "Some special cases of propagation characteristics of an elliptical step-index fiber with a conducting helical winding on the core-cladding boundary An analytical treatment," Optik, Vol. 112, No. 12, 561-566, 2001.
13. Kumar, D. and O. N. Singh II, "An analytical study of the modal characteristics of annular step-index waveguide of elliptical cross-section with two conducting helical windings on the two boundary surfaces between the guiding and the non-guiding regions," Optik, Vol. 113, No. 5, 193-196, 2002.
14. Watkins, D. A., Topics in Electromagnetic Theory, John Wiley and Sons Inc., 1958.
15. McLachlan, N. W., Theory and Application of Mathieu Functions, Oxford University Press, 1947.
16. Abramowitz, M. and I. A. Stegun, Handbook of Mathematical Functions, Dover Publications, 1965.
17. Tai, C.-T., Generalized Vector and Dyadic Analysis, IEEE Press, 1992.