1. R. Freeman, Fiber-Optic Systems for Telecommunications (Wiley, New York, 2002; Tekhnosfera, Moscow, 2006).
2. H. G. Unger, Planar Optical Waveguides and Fibres (Oxford Univ. Press, Oxford, 1977; Mir, Moscow, 1981).
3. O. K. Sklyarov, Fiber-Optic Networks and Communication Systems (SOLON-Press, Moscow, 2001) [in Russian].
4. D. V. Iorgachev and O. V. Bondarenko, Fiber-Optical Cables and Communication Lines (Eko-Trendz, Moscow, 2002) [in Russian].
5. M. Salib, L. Liao, and R. Jones, Intel Technol. J. 8, 143 (2004).