Tag: Optical modulators
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Features of Optical Modulators in Telecommunication Systems
Light emitting PN junction devices such as LEDs and laser diodes are easily modulated by superimposing signals on to the injected current. This is direct modulation. Laser diodes in high-bit rate and long-span optical communication systems are often used under direct modulation. The downside of direct modulation is that, it results in chirping which limits…