[1] Adel Zaghloul, "Directional Coupler as an Electrooptically Controlled Wavelength Division Demultiplexer," 23th Radio Science Conference, NRSC, Ain Shams, pp. 544 -550, March 2007.
[2] Chung Ho Kwan and Kin Seng Chiang, “Study of Polarization-Dependent Coupling in Optical Waveguide Directional Couplers by the Effective Index Method with Built-in Perturbation Correction,” J. Lightwave Technol., Vol.20, No.6, pp. 1018-1026, June 2002.
[3] H. Z. Hu, J Chen, J. S.Yang, and F. Geng, “Structural Auto-Optimization of Integrated Optical Directional Coupler Polarization Splitters and Reflectors,” J. Lightwave Technol., Vol.20, No.5, pp. 840-844, May 2002.
[4] R. Hereth and G. Schiffner, "Broad-Band Optical Directional Couplers and Polarization Splitters," J. Lightwave Technol., Vol.7, No.6, pp.925-930, June 1989.
[5] Hiroshi Nishhara, Masamitsu Haruna, and Toshiashi Suhara, “Optical Integrated Circuits,” McGraw Hill Book Company, New-York, Ch.2, 2nd editin 1989.
[6] Dietrich Marcuse, “Theory of Dielectric Optical Waveguides,” AT&T New-York, Ch. 8, pp. 330-334, 2nd edition, 1991.
[7] Huawei Liang, Shuaxing Shi, and Lin Ma, "Coupled Mode Theory of Nonparallel Optical Waveguides," J. Lightwave Technol., Vol. 25, No.8, pp. 2233-2235, 2007.
[8] A. N. Kireev and Thomas Graf, "Vector Coupled Mode Theory of Dielectric Wave-guides," IEEE J. Quantum Electronics, Vol.39, No.7, pp. 866-873, jul. 2003.
[9] Athanasion Theocharidis, Thomas Kamalakis, and Thomas Sphicopoulos, "Accuracy of Coupled Mode Theory and Mode Matching Method in the Analysis of Photonic Crystal Waveguide Perturbations" J. Lightwave Technol., Vol.25, No.10, pp. 2193-3201, Oct. 2007.
[10] Manfred Hammer, "Hybrid Analytical/Numerical Coupled-Mode Modeling of Guided-Wave Device," J. Lightwave Technol., Vol25, No.9, pp. 2287-2298, Sep. 2007.
[11] Dietrich Marcuse, “Directional Couplers Made of Nonidentical Asymmetric Slabs. Part I: Synchronous Couplers,” J. Lightwave Technol., Vol. LT-5, No.1, pp. 113-118, Jan.1987.
[12] Adel Zaghloul, "Analysis of Anisotropic Rectangular Waveguide as an Isotropic Waveguide" 23th Radio Science Conference, NRSC, Ain Shams, pp. 544-550, March 2007.
[13] A. M. Zaghloul, “A Simple Analysis of a Multimode Three Optical Slab Waveguide Directional Coupler,” 18th Radio Science Conference, Alexandria, pp.544-552, March 2002
[14] Office of the Manager National Communication System (NSC TIB 00-3), "Wavelength Division Multiplexing (WDM) Networks," National Communication System (NSC TIB 00-3) pp. 1-5, Feb. 2000.
[15] N. Anwar and B. M. Azizur Rahman “Design Consideration for an Electrooptic Directional Coupler Modulator,” J. Lightwave Technol., Vol.17, No.4, pp. 598-605, April 1999.
[16] Matteo Dainese, Marcin Swillo, Lech Wosinski and Lars Thylen, “Directional Coupler Wavelength Selective Filter Based on Dispersive Bragg reflection Waveguide," Optics Comm. 260, pp. 514-521 2006.