1. Weakly guiding fibres;Gloge;Appl. Opt.,1971
2. Theory of Dielectric Optical Waveguides;Marcuse,1994
3. Optical Waveguide Theory;Snyder,1983
4. Coupled wave theory of distributed feedback lasers;Kogelnik;J. Appl. Phys.,1972
5. Filter response of nonuniform almost-periodic structures;Kogelnik;Bell. Syst. Tech. J.,1976