| 简介 |
A light source unit comprising at least an excitation light source and a photocoupler, a light source medium consisting of one kind of a single fiber added with a rare earth element which is excited by the excitation light source and has two terminals, and an output end formed of an optical fiber. An optical component having at least one of reflection, branching or attenuation function is provided in anywhere of an optical circuit from the light source medium to the output end. The light source unit can output light beams of different wavelengths generated from the rare earth element ions added to the fiber and caused by different peaks of spontaneous emission light, and at least one light beam is a visible light beam. |
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