Method for integrating modulator in feedback laser module

[0005] The present invention mainly solves the integrated manufacture of the modem and the feedback laser module: for the distributed feedback semiconductor laser, the grating is placed in the active area of ​​the semiconductor laser instead of the reflective surface for reflection. The optical oscillation with the same wavelength as the grating's natural wavelength is selected in the spectrum, thereby outputting single longitudinal mode laser light.

[0006] The light-emitting device in the feedback light source is the feedback laser, which can be roughly divided into 1310nm, 1550nm, CWDM, DWDM and other light sources according to different working wavelengths and uses. The first aspect of the present invention is based on the technology of the feedback type high-stability light source, by adopting precise secondary refrigeration technology and structural design technology such as photoelectric separation, the short-term stability and long-term stability of the output optical pow