Optical Systems Design and Manufacture

  The approach also means that the resulting optical/laser systems can be much lighter, more rugged and compact and can provide enhanced optical performance.
Next, to guide light between the components in hollow waveguides also formed in the surface of the substrate - essentially it’s a macroscopic form of integrated optics.
Hollow waveguides inherently have a multimode nature.
Here is information about the Hollow Waveguide Optical Circuit Board (optical PCB) technology that I work on.
By adherence to appropriate angular and lateral alignment tolerances, very high (>95%) fundamental-mode transmission fidelity can be achieved in practice.
Assembly of a hollow waveguide integrated optic circuit simply requires the location of the discrete optical components in their associated alignment features.
At any given frequency, the magnitude of the hollow waveguide attenuation coefficient can be made suitably small by appropriate choices of the complex refractive index of the substrate material (the walls of the hollow waveguides) and the hollow waveguide cross-section.
This is the optical system design goal for most systems.
Conversely, for any given operational wavelength, the hollow waveguide can be designed to support the propagation of very high-order modes with very low loss - EH10,10.
Compared with solid core waveguides or optical fibres hollow waveguides have very broad waveband high power transmission characteristics making the applicable to a very wide range of applications.

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