The laser chip can be subdivided into surface-emitting and edge-emitting laser chips according to the type of light emission:
①The surface emitting laser chip is a VCSEL chip, which is suitable for short-distance scenes;
②The edge-emitting laser chip includes FP, DPF and EML chips.
The FP chip is suitable for medium and short distance scenes, and the DFB and EML chip is suitable for medium and long distance and high speed scenes.
The EML chip adds an electro-absorption modulator on the basis of the DFB chip to increase the output power, transmission rate and temperature stability of the laser.
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