Datalogic [india] offers fibre optics. Target detection using a fibre optic cable can be carried out under critical conditions, e.G., at high temperatures, when mounting space is limited or in the presence of aggressive chemical substances. Fibre optics come with proximity scanner and emitter/receiver functions. Fibre optics are circular dielectric waveguides that can transport optical energy. Fibre optics are commonly included into polyethylene or metal cables. Fibre optics are used basically for small object detection, space limited applications and high temperature applications. The plastic fibre optics can be cut at the desired length. The company also offers spiral fibre versions.