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Topic 3. Dielectric Waveguides and. Optical Fibers. Kasap Chapter 2. 2. 901 37500 ????. Contents (Kasap Chapter 2). 1 Symmetric Planar Dielectric Slab Waveguide. 2 Modal and Waveguide Dispersion in the Planar Waveguide. 3 Step Index Fiber. 4 Numerical Aperture. 5 Dispersion in Single Mode Fibers. 6 Bit Rate
6 Sep 2005 Two other key concept concerning dielectric waveguides deserve attention. The first is that, due to the symmetry of the geometry, the fields will either be symmetric or anti-symmetric about the y-z plane. The second is that in order for the field to be guided by the high-permittivity dielectric slab, the fields
1 Apr 1996 Received October 12, 1995. We present the dispersion relations for symmetric planar waveguides in general isotropic media. The planar waveguide structure that utilizes chiral media in the cladding regions is emphasized. Unlike other symmetric planar waveguide configurations in isotropic media, this
In this paper we have studied the asymmetric versus symmetric planar waveguide in terms of their usefulness in optical fiber communication systems. We have explored the thin waveguide versus thick waveguide first. Later on usefulness of asymmetric versus symmetric waveguide is carried out to target for WDM optical
Keywords: Propagation constant, effective refractive index, slab waveguide, symmetric waveguide. 1 Introduction. The analysis of TE modes are started with the electric field polarized along y direction for a symmetric step index slab waveguide. This calculation is performed to determine the profile mode slab waveguides,
For each value of V : -determine the number of existing symmetrical and antisymmetrical modes. Ex : V="5" => 1 symm. mode and 1 antisymm. mode. -determine the corresponding discrete values of u. -deduce the corresponding propagation constant. 22. 0 ?/2 ? 3?/2 ?
We derive the eigenvalue equation and the expressions for the field distribution for the TM modes of an anisotropic symmetric slab waveguide; the TE modes.
The light is guided inside the slab by total internal reflection. The inner medium is usually called the "core", and the media on both sides are called. "cladding" of the waveguide. In this section, we study the propagation of light in a symmetric planar dielectric waveguide made of a slab of width d and refractive index.
Figure 6.2-3 The lowest order symmetric mode of a slab waveguide. Figure 6.2-4 Mode patterns for a two-moded slab guide. CUTOFF CONDITIONS. At higher frequencies still, even more patterns are possible. We can work out how many modes can propagate at any given frequency as follows. Particular modes cease to be.
In this paper, we only consider symmetric planar dielectric waveguide, which is the cover and subtract have the same refraction index. 2: Waveguide modes. Because only certain reflection angle ? are allowed. We need self consistency condition to find ?m which can survive in the waveguide, and m means mth mode.
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