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Why is the light source power of the fiber collimator different in the output spot size?

Everyone is curious why the light source power of the fiber collimator is different in the size of the emitted light spot. The following editor will talk about the reason why the emitted light spot size is different with different light source power.
First of all, I will popularize the knowledge of fiber collimators: fiber collimators are precisely positioned by pigtails and self-focusing lenses. It can convert the transmitted light in the fiber into collimated light, that is, parallel light; it can also couple the external parallel or nearly parallel light into the single-mode fiber. Next, let’s talk about the reason why the light source power of the fiber collimator is different and the size of the emitted light spot is different: when the power of the light source of the fiber collimator changes, the mode of the light source changes, which in turn leads to the different size of the emitted light spot.
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Author:X Ray Collimator


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