1. Kendall, P. C., P. W. A. McIlroy, and M. S. Stern, "Spectral index method for rib waveguide analysis," Electron. Lett., Vol. 25, 107-108, 1989.
doi:10.1049/el:19890079

2. Kendall, P. C., P. W. A. McIlroy, and M. S. Stern, "Analysis of semiconductor rib waveguides: Spectral index method," IEE Colloquium on Integrated Optics, IEE Digest, 13/1-13/4, 1989/93.

3. Mcllroy, P. W. A., M. S. Stern, and P. C. Kendall, "Fast and accurate method for calculation of polarized modes in semiconductor rib waveguides," Electron. Lett., Vol. 25, 1586-1587, 1989.
doi:10.1049/el:19891065

4. Hewson-Browne, R. C. and P. C. Kendall, "Note on optoelectronic propagation using spectral index technique," Electron. Lett., Vol. 25, 1153-1154, 1989.
doi:10.1049/el:19890774

5. Mcllroy, P. W. A., M. S. Stern, and P. C. Kendall, "Spectral index method for polarized modes in semiconductor rib waveguides," IEEE J. Lightwave Technol., Vol. 8, 113-117, 1990.
doi:10.1109/50.45937

6. Stern, M. S., P. C. Kendall, and P. W. A. Mcllroy, "Analysis of the spectral index method for vector modes of rib waveguides," IEE Proc., Vol. 137, Pt. J, 21-26, 1990.

7. Robson, P. N. and P. C. Kendall (Eds.), Rib Waveguide Theory by the Spectral Index Method, Research Studies Press and Wiley, 1990.

8. Vassallo, C. and Y. H. Wang, "A new semirigorous analysis of rib waveguides," IEEE J. Lightwave Technol., Vol. 8, 56-65, 1990.
doi:10.1109/50.45930

9. Vassallo, C., Optical Waveguide Concepts, Elsevier, 1991.

10. Stern, M. S., "Semivectorial polarized finite difference method for optical waveguides with arbitrary index profiles," IEE Proc., Vol. 135, Pt. J, 56-63, 1988.

11. Stern, M. S., "Semivectorial polarized H field solution for dielectric waveguides with arbitrary index profiles," IEE Proc., Vol. 135, Pt. J, 333-338, 1988.
doi:10.1049/ip-d.1988.0049

12. Stern, M. S., "Rayleigh quotient solution of semivectorial field problems for optical waveguides with arbitrary index profiles," IEE Proc., Vol. 138, Pt. J, 185-190, 1991.
doi:10.1049/ip-d.1991.0026

13. Rahman, B. M. A. and J. B. Davies, "Vector-H finite element solution of GaAs/GaAlAs rib waveguides," IEE Proc., Vol. 132, Pt. J, 349-353, 1986.

14. Knox, R. M. and P. P. Toulios, "Integrated circuits for the millimeter through optical frequency range," Proc. of MRI Symposium on Submillimeter Waves, 497-518, Fox, J. (Ed.), Polytechnic Press, 1970.

15. Kendall, P. C., M. J. Adams, S. Ritchie, and M. J. Robertson, "A theory for calculating approximate values for the propagation constants of an optical rib waveguide by weighting the refractive indices," IEE Proc., Vol. 134, Pt. A, 699-702, 1987.

16. Burke, S. V., "Spectral index method applied to coupled rib waveguides," Electron. Lett., Vol. 25, 605-606, 1989.
doi:10.1049/el:19890411

17. Burke, S. V., "Spectral index method applied to rib and strip-loaded directional couplers," IEE Proc., Vol. 137, Pt. J, 7-10, 1990.

18. Burke, S. V., "Spectral index method applied to two nonidentical closely separated rib waveguides," IEE Proc., Vol. 137, Pt. J, 289-292, 1990.

19. Burke, S. V., "Novel semianalytic rib/ridge semiconductor waveguide design including gain and loss," Electron. Lett., Vol. 28, 2280-2282, 1992.
doi:10.1049/el:19921467

20. Burke, S. V., "Analysis of a novel rib waveguide wavelength filter by the spectral index method," Technical Digest on Integrated Photonics Research, Vol. 5, 86-87, 1990.

21. Burke, S. V. and P. C. Kendall, "Analysis of a rib waveguide filter response with variable separation," Technical Digest on Integrated Photonics Research, Vol. 8, 117, 1991.

22. Burke, S. V., P. C. Kendall, S. Ritchie, M. J. Robertson, and P. N. Robson, "Analysis of rib waveguide coupler filters," IEE Proc., Vol. 139, Pt. J, 59-65, 1992.

23. Burke, S. V., M. J. Adarns, P. C. Kendall, P. N. Robson, and G. J. Rees, "Design of ridge waveguide couplers with carrier injection using the discrete spectral index method," Electron. Lett., Vol. 28, 841-843, 1992.
doi:10.1049/el:19920532

24. Burke, S. V., M. J. Adams, P. C. Kendall, P. N. Robson, and G. J. Flees, "Application of the discrete spectral index method to the design of coupled ridge waveguides with carrier injection," Technical Digest on Integrated Photonics Research, Vol. 10, 170-171, 1992.

25. Kendall, P. C., M. S. Stern, and P. N. Robson, "Discrete spectral index method for rib waveguide analysis," Optical and Quantum Electronics, Vol. 22, 555-560, 1990.
doi:10.1007/BF02189505

26. Ramo, S., J. R. Whinnery, and T. Van Duzer, Fields and Waves in Communication Electronics, 2nd Ed., Wiley, 1984.

27. Press, W. H., B. P. Flannery, S. A. Teukolsky, and W. T. Vetterling, "Numerical Recipes: The Art of Scientific Computing," Cambridge University Press, 1992.

28. Collin, R. E., Field Theoy of Guided Waves, 188-189, 2nd Ed., IEEE Press, 1991.

29. Wait, J. R., Electromagnetic Waves in Stratified Media, 2nd Ed., Pergamon Press, 1970.

30. Robertson, M. J., S. Ritchie, and P. Dayan, "Semiconductor waveguides: Analysis of optical propagation in single rib structures and directional couplers," IEE Proc., Vol. 132, Pt. J, 336-342, 1985.

31. Haus, H. A., Waves and Fields in Optoelectronics, Prentice-Hall, 1984.

32. Marcuse, D., Theoy of Dielectric Optical Waveguides, 2nd Edition, Academic Press, 1991.

33. Lagasse, P., et al., "COST-216 comparative study of eigenmode analysis methods for single and coupled integrated optical waveguides," IEE European Conference on Optical Communications, No. 292, 296-299, 1988.

34. Working Group 1, COST 216 "Comparison of different modeling techniques for longitudinally invariant integrated optical waveguides," IEE Proc., Vol. Pt. J, 136, 273-280, 1989.

35. Mao, M. and W. P. Huang, "Analysis of optical rib waveguides and couplers with buried guiding layer," IEEE J. Quantum Electron., Vol. 28, 176-183, 1992.
doi:10.1109/3.119512

36. Albrecht, P., M. Harnacher, H. Heidrich, D. Hofhann, H. P. Nolting, and C. M. Weinert, "TE/TM mode splitters on InGaAsP/InP," IEEE Photon. Technol. Lett., Vol. 2, 114-115, 1990.
doi:10.1109/68.47064

37. Buus, J., "The effective index method and its application to semiconductor lasers," IEEE J. Quantum. Electron., Vol. 18, 1083-1089, 1982.
doi:10.1109/JQE.1982.1071659

38. Oksanen, M. I. and I. V. Lindell, "Complex-valued functionals in variational analysis of waveguides with impedance boundaries," IEE Proc., Vol. 136, Pt. H, 281-288, 1989.

39. Chen, C. H. and Y. W. Kiang, "The variational formulation of physical problems and the associated numerical techniques," Research Topics in Electromagnetic Wave Theory, Kong, J. A., (Ed.), Wiley, 1981.

40. Sharrna, E. K., M. P. Singh, and P. C. Kendall, "Exact multilayer waveguide design including absorbing or metal layers," Electron. Lett., Vol. 27, 408-410, 1991.
doi:10.1049/el:19910259