1. Yeh, C., "Modes in weakly guiding elliptical fibers," Opt. Quantum Electron., Vol. 8, 43-47, 1976.
doi:10.1007/BF00620439
2. Ikuno, H. and K. Nakashima, "Numerical analysis of ellipticallycored optical fiber," Res. Rep. Inst. Elect. Eng. (Jpn.), Vol. EMT83-4, 83-4, 1983.
3. Kumar, A. and R. K. Varshney, "Propagation characteristics of highly elliptical core optical waveguides: Ap erturbation approach," Opt. Quantum Electron., Vol. 16, 349-354, 1984.
doi:10.1007/BF00620076
4. Dyott, R. B., "Cutoff of the first order modes in elliptical dielectric waveguide: an experimental approach," Electron. Lett., Vol. 26, 1721-1723, 1990.
doi:10.1049/el:19901099
5. Lim, M. H., S. C. Yeow, P. K. Choudhury, and D. Kumar, "On the dispersion characteristics of tapered core dielectric optical fibers," J. Electromag. Waves and Appl., Vol. 20, 1597-1609, 2006.
doi:10.1163/156939306779292417
6. Goell, J. E., "Acircular-harmonic computer analysis of rectangular dielectric waveguides," Bell Syst. Tech. J., Vol. 48, 2133-2160, 1969.
7. Goell, J. E., "Slab-coupled waveguides," Bell. Syst. Tech. J., Vol. 53, 645-674, 1974.
8. Borland, W. C., D. E. Zelmon, C. J. Radens, J. T. Boyd, and H. E. Jackson, "Properties of four-layer planar optical waveguides near cutoff," IEEE J. Quantum Electron., Vol. QE-23, 1172-1179, 1978.
9. Kumar, A., K. Thyagarajan, and A. K. Ghatak, "Analysis of rectangular core dielectric waveguides: an accurate perturbation approach," Opt. Lett., Vol. 8, 63-65, 1983.
10. Choudhury, P. K., "On the modal behaviour of rectangular and deformed planar waveguides," Microw. and Opt. Tech. Lett., Vol. 10, 333-335, 1995.
11. James, J. R. and I. N. L. Gallett, "Modal analysis of triangularcored glass-fiber waveguides," Proc. IEE, Vol. 120, 1362-1370, 1973.
12. Dyott, R. B., "Glass-fiber waveguide with triangular core," Electron. Lett., Vol. 9, 288-290, 1973.
doi:10.1049/el:19730209
13. Ojha, S. P.P. K. Choudhury, and P. Khastgir, "Glass fibers of triangular cross-sections with metal-loading on one or more sides — Acomparativ e modal study," Proc. SPIE, Vol. 1580, 278-287, 1991.
14. Shukla, P. K., P. K. Choudhury, P. Khastgir, and S. P. Ojha, "Comparative aspects of a metal-loaded triangular waveguide with uniform and non-uniform distribution of Goell's matching points," J. Inst. Electron. & Telecommun. Engg., Vol. 41, 217-220, 1995.
15. Choudhury, P. K., P. Khastgir, S. P. Ojha, and L. K. Singh, "Analysis of the guidance of electromagnetic waves by a deformed planar waveguide with parabolic cylindrical boundaries," J. Appl. Phys., Vol. 71, 5685-5688, 1992.
doi:10.1063/1.350502
16. Choudhury, P. K., P. Khastgir, and S. P. Ojha, "Amathematically rigorous cutoff analysis of parabolic cylindrical waveguides," J. Phys. Soc. Jpn., Vol. 61, 3874-3877, 1992.
doi:10.1143/JPSJ.61.3874
17. Choudhury, P. K., P. Khastgir, S. P. Ojha, and K. S. Ramesh, "An exact analytical treatment of parabolically deformed planar waveguides near cutoff," Optik, Vol. 95, 147-151, 1994.
18. Choudhury, P. K. and R. A. Lessard, "Parabolic cylindrical waveguides: revisited," Optik, Vol. 112, 358-361, 2001.
19. Misra, V., P. K. Choudhury, P. Khastgir, and S. P. Ojha, "Modal propagation analysis of a waveguide with a regular pentagonal cross-section with conducting and non-conducting boundaries," Microw. and Opt. Tech. Lett., Vol. 8, 280-282, 1995.
20. Choudhury, P. K., "On the preliminary study of a dielectric guide having a Piet Hein geometry," Ind. J. Phys., Vol. 71B, 191-196, 1997.
21. Misra, V., P. K. Choudhury, P. Khastgir, and S. P. Ojha, "Electromagnetic wave propagation through a dielectric guide having Piet Hein cross-sectional geometry," Microw. and Opt. Tech. Lett., Vol. 12, 250-254, 1996.
doi:10.1002/(SICI)1098-2760(19960805)12:5<250::AID-MOP2>3.0.CO;2-9
22. Choudhury, P. K. and O. N. Singh, "Some multilayered and other unconventional lightguides," Electromagnetic Fields in Unconventional Structures and Materials, 289-357, 2000.
23. Kumar, D., "Apreliminary ground work for the study of the characteristic dispersion equation for a slightly elliptical sheath helix slow-wave structure," J. Electromag. Waves and Appl., Vol. 18, 1033-1044, 2004.
doi:10.1163/1569393042955441
24. Kumar, D. and O. N. Singh II, "Analysis of the propagation characteristics of a step-index waveguide of annular circular crosssection with conducting helical windings on the inner and outer boundary surfaces between the guiding and the non guiding regions," J. Electromag. Waves and Appl., Vol. 18, 1655-1669, 2004.
doi:10.1163/1569393042955199
25. Watkins, D. A., Topics in Electromagnetic Theory, 39-62, 39-62, 1958.
26. Brillouin, L., Wave Propagation in Periodic Structures, Dover Publications, 1953.
27. Kornhauser, E. T., "Radiation field of helical antennas with sinusoidal current," J. Appl. Phys., Vol. 22, 887-891, 1951.
doi:10.1063/1.1700068
28. Mathers, G. W. C. and G. S. Kino, "Some properties of a sheath helix with a center conductor or External shield," Report No. 65, No. '' Report 65, 1953.
29. 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, 561-566, 2001.
30. Kumar, D. and O. N. Singh II, "Modal characteristic equation and dispersion curves for an elliptical step-index fiber with a conducting helical winding on the core-cladding boundary — An analytical study," J. Light. Tech., Vol. 20, 1416-1424, 2002.
doi:10.1109/JLT.2002.800799
31. Kumar, D. and O. N. Singh II, "Elliptical and circular step-index fibers with conducting helical windings on the core-cladding boundaries for different winding pitch angles — Acomparativ e modal dispersion analysis," Progress In Electromagnetics Research, Vol. 52, 1-21, 2005.
doi:10.2528/PIER04052002
32. Verma, K. K. and D. Kumar, The Elements of Vector Calculus, AITBS Publisher and Distributor, 2005.