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Hollow Waveguide Optical Systems Design Manufacture Engineering. The hollow waveguides take the form of square-section channels, together with a lid which acts as the upper wall of all the hollow waveguides. The advantage of using the hollow waveguides to guide the light between the circuit of components is that they significantly ease the required angular alignment tolerances compared with the equivalent free-space implementation. Furthermore, the use of the alignment features, for locating and aligning the optical circuit components, means you can circumvent the use of multi-axial angular and translational stages and the associated manual alignment techniques - in conjunction with appropriate "pick & place” robots, this leads to the potential for low cost, quality controlled, automated 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.

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