Signal Processing

Download Electromagnetic Surface Waves. A Modern Perspective by John Polo, Tom Mackay, Akhlesh Lakhtakia PDF

By John Polo, Tom Mackay, Akhlesh Lakhtakia

For a long time, the surface-plasmon-polariton wave guided by way of the interface of straightforward isotropic fabrics ruled the scene. besides the fact that, lately study on electromagnetic floor waves guided by means of planar interfaces has multiplied into new and intriguing components. within the 1990's learn considering advancing wisdom of the newly stumbled on Dyakonov wave. extra lately, a lot of the skin wave learn is inspired by means of the proliferation of nanotechnology and the starting to be variety of fabrics to be had with novel homes. This e-book leads the reader from the rather basic surface-plasmon-polariton wave with isotropic fabrics to the most recent examine on a number of sorts of electromagnetic floor waves guided through the interfaces of complicated fabrics enabled through contemporary advancements in nanotechnology. This comprises: Dyakonov waves guided via interfaces shaped with columnar skinny motion pictures, Dyakonov-Tamm waves guided by means of interfaces shaped with sculptured skinny movies, and a number of modes of surface-plasmon-polariton waves guided by way of the interface of a steel and a periodically various dielectric fabric.

  • Gathers study from the prior five years in one complete view of electromagnetic floor waves.
  • Written via the main specialists and researchers within the field.
  • Layered presentation explains issues with an introductory assessment point as much as a hugely technical level.

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Extra resources for Electromagnetic Surface Waves. A Modern Perspective

Example text

1 lists the types and chief characteristics. The range of directions along which a surface wave of a certain species may propagate in the interface plane is known as the angular existence domain (AED). As AEDs are generally symmetric with respect to certain rotations about the axis normal to the interface plane, two conventions for specifying AEDs are possible. The AED may refer to either (i) a single continuous interval of directions of propagation in the interface plane or (ii) the union of all intervals of directions of propagation in the interface plane.

E. the band gap) of a rugate filter is narrower than of a quarter-wave stack, which is often advantageous in some situations. Another advantage of rugate filters is that reflection bands at integer divisors of the central free-space wavelength of the band gap are greatly suppressed. Because of its simplicity, the rugate filter has been extensively investigated and refined [119,120]. Several fabrication techniques—including PVD methods such as thermal evaporation [121] and reactive sputtering [122], chemical vapor deposition 24 Electromagnetic Surface Waves [123], and electrochemical etching [124]—have been devised for rugate filters.

The large total AED, however, seems to come at the price of a reduced range of allowable values of the refractive index of the isotropic partnering material, compared to Dyakonov waves. When two periodically varying anisotropic dielectric materials are partnered, the interface may support multiple Dyakonov-Tamm-wave modes in some [50–52,183] but not all [53] cases. 5 Emerging Types of Surface Waves In this chapter, and in much of this book, certain assumptions regarding constitutive parameters have been made.

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