What are waveguides?

Some articles on waveguides, waveguide:

Slot-waveguide - Fabrication
... Planar slot-waveguides have been fabricated in different material systems such as Si/SiO2 and Si3N4/SiO2 ... In vertical slot-waveguides, the slot and strips widths are defined by electron- or photo-lithography and dry etching techniques whereas in horizontal slot-wavegui ... This makes horizontal slot-waveguides less sensitive to scattering optical losses due to interface roughness than vertical configurations ...
Waveguide (electromagnetism) - Dielectric Rods For Microwaves
... Dielectric rod waveguides, in linear arrays of short transverse conductors, and planar resistive conductors use the same principle as optical waveguides ... These function via a refractive index effect where the waveguide slows the EM wave velocity below the free space velocity, continuously bending the relatively wide EM wavefronts towards the narrow waveguide and ... Helical waveguides and linear arrays of short conductors are used as part of "end-fire" antennas such as the helical antenna and Yagi antenna ...
Michal Lipson - Research
... silicon photonic components such as waveguide couplers, ring resonators, modulators, detectors, WDM wavelength sources and sensors on silicon platform ... She published the first paper on a class of versatile waveguides known as Slot-waveguides in 2004, which has since been cited over a hundred times ... citation mentions her work in ring modulators (circular waveguides) as the key contribution of Lipson via the continued refinement of both opto-electronic and purely optical circuits for ...
Waveguide (optics) - Two-dimensional Waveguides - Segmented Waveguides and Photonic Crystal Waveguides
... Optical waveguides typically maintain a constant cross-section along their direction of propagation ... This is for example the case for strip and of rib waveguides ... However, waveguides can also have periodic changes in their cross-section while still allowing lossless transmission of light via so-called Bloch modes ...
Cutoff Frequency - Waveguides - Mathematical Analysis
... It is a property of all the eigenmodes of the electromagnetic waveguide that at least one of the two fields is transverse ... The z axis is defined to be along the axis of the waveguide ... The final step depends on the geometry of the waveguide ...