| 摘要 |
The present invention relates to an optical transmission module with digital adjustment and method for this adjustment, including the laser (21), the driver (22), the auto power control circuit (23), the auto temperature control circuit (24), the digital adjustment circuit (25) and the memory (26). The digital adjustment circuit is comprised of the D/A converter or the digital potential device, which receives the numerical control signal, outputs respectively the extinction ratio and cross point adjusting signal to the driver, the optical wavelength trimming signal to the auto temperature control circuit. The parameters of the optical transmission module and the forward parameters of the laser's optical transmitted power are stored in the memory, which is used to adjust the optical transmission module's parameters promptly. The adjustment is implemented by searching for the list of the optical module's parameters according to the desired optical output power, then the data relevant to the transport of the D/A converter is obtained and written in the digital adjustment circuit, converted to be the adjustment signal of the relevant parameters; according to the A/D conversion result detected by the laser against light, by searching for the list of the forward optical transmitted power, the forward power value is obtained.
|
