论文信息 - Scalar-field theory and 2-D ray theory for bent single-mode weakly guiding optical fibers

Scalar-field theory and 2-D ray theory for bent single-mode weakly guiding optical fibers

A purely scalar theory is presented for bent single-mode, weakly guiding, optical fibers, leading to the well-known loss formula and also to simple analytical expressions for the radiating field and the evanescent field reflected by the caustic. It is also established that all these results can be derived from a simple two-dimensional (2-D) ray analysis of the cross-sectional field; the evanescent parts of the field are connected with real rays while the radiating part involves complex rays. Lastly, field-displacement effects are analyzed, within both the field theory and the ray analysis.

C. Vassallo | C. Vassallo

[1] David C. Chang,et al. Electromagnetic waves and curved structures , 1977 .

[2] I. S. Gradshteyn,et al. Table of Integrals, Series, and Products , 1976 .

[3] Donald Ludwig,et al. Uniform asymptotic expansions at a caustic , 1966 .

[4] Dietrich Marcuse,et al. Curvature loss formula for optical fibers , 1976 .

[5] A. Snyder,et al. Radiation from bent optical waveguides , 1975 .

[6] Dietrich Marcuse,et al. Field deformation and loss caused by curvature of optical fibers , 1976 .

[7] K. S. Kaufman,et al. Curvature loss in multimode optical fibers , 1981 .

[8] I. A. White,et al. Radiation from bends in optical waveguides: the volume-current method , 1979 .

[9] Perturbation theory of a doubly clad optical fiber with a low-index inner cladding , 1975 .

[10] J. Arnaud. Transverse coupling in fiber optics part III: Bending losses , 1974 .