When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Waveguide (optics) - Wikipedia

    en.wikipedia.org/wiki/Waveguide_(optics)

    A strip waveguide is basically a strip of the layer confined between cladding layers. The simplest case is a rectangular waveguide, which is formed when the guiding layer of the slab waveguide is restricted in both transverse directions rather than just one. Rectangular waveguides are used in integrated optical circuits and in laser diodes.

  3. Beam propagation method - Wikipedia

    en.wikipedia.org/wiki/Beam_propagation_method

    Both spatial domain methods, and frequency (spectral) domain methods are available for the numerical solution of the discretized master equation. Upon discretization into a grid, (using various centralized difference, Crank–Nicolson method, FFT-BPM etc.) and field values rearranged in a causal fashion, the field evolution is computed through iteration, along the propagation direction.

  4. Waveguide - Wikipedia

    en.wikipedia.org/wiki/Waveguide

    A waveguide is a structure that guides waves by restricting the transmission of energy to one direction. Common types of waveguides include acoustic waveguides which direct sound, optical waveguides which direct light, and radio-frequency waveguides which direct electromagnetic waves other than light like radio waves.

  5. Coupled mode theory - Wikipedia

    en.wikipedia.org/wiki/Coupled_Mode_Theory

    Coupled mode theory first arose in the 1950s in the works of Miller on microwave transmission lines, [1] Pierce on electron beams, [2] and Gould on backward wave oscillators. [3] This put in place the mathematical foundations for the modern formulation expressed by H. A. Haus et al. for optical waveguides. [4] [5]

  6. Dispersion relation - Wikipedia

    en.wikipedia.org/wiki/Dispersion_relation

    Dispersion may be caused either by geometric boundary conditions (waveguides, shallow water) or by interaction of the waves with the transmitting medium. Elementary particles , considered as matter waves , have a nontrivial dispersion relation, even in the absence of geometric constraints and other media.

  7. Optics - Wikipedia

    en.wikipedia.org/wiki/Optics

    Dispersion occurs when different frequencies of light have different phase velocities, due either to material properties (material dispersion) or to the geometry of an optical waveguide (waveguide dispersion). The most familiar form of dispersion is a decrease in index of refraction with increasing wavelength, which is seen in most transparent ...

  8. Slot-waveguide - Wikipedia

    en.wikipedia.org/wiki/Slot-waveguide

    A slot-waveguide is an optical waveguide that guides strongly confined light in a subwavelength-scale low refractive index region by total internal reflection.. A slot-waveguide consists of two strips or slabs of high-refractive-index (n H) materials separated by a subwavelength-scale low-refractive-index (n S) slot region and surrounded by low-refractive-index (n C) cladding materials.

  9. Arrayed waveguide grating - Wikipedia

    en.wikipedia.org/wiki/Arrayed_waveguide_grating

    The diffracted light from each waveguide within the grating undergoes constructive interference, resulting in a refocusing of the light at the output waveguides (5). The spatial position of the output channels is wavelength-dependent, determined by the array phase shift induced by the constant length increment in the grating waveguides. [2]