Light source

The role of the light source is complete electrical / optical conversion, the light emitting device module key.

A light source for optical fiber communications requirements can be summarized as follows:
(1) peak wavelength emitted by the source, should be in the low-loss optical fiber within the window;
(2) there is a sufficiently high and stable output power;
(3) high conversion efficiency, driving low power, long life, high reliability;
(4) good color and direction;
(5) easy to modulate, fast response;
(6) the intensity of noise to be small;
(7) the intensity of the linear drive current is better.