Driver for optical module, control method, and optical module

A control method for a driver of an optical module, wherein the control method is applied to a regulation apparatus in the driver, and the regulation apparatus is connected to a first detection apparatus, a gain control apparatus, and a second detection apparatus of the driver respectively;

• wherein the first detection apparatus is configured to detect a first signal-to-noise ratio of an input signal of the driver;
• the gain control apparatus is configured to perform gain amplification on the input signal of the driver;
• the second detection apparatus is configured to detect a second signal-to-noise ratio of an output signal of the driver;
• and the control method comprises:
• adjusting a gain of the gain control apparatus based on the first signal-to-noise ratio and the second signal-to-noise ratio.

An optical module, comprising:

• an input apparatus, configured to connect to a switch;
• a driver for an optical module, comprising:
• a first detection apparatus, wherein the first detection apparatus is connected to an input end of the driver, and the first detection apparatus is configured to detect a first signal-to-noise ratio of an input signal of the driver;
• a gain control apparatus, wherein the gain control apparatus is connected between the input end of the driver and an output end of the driver, and the gain control apparatus is configured to perform gain amplification on the input signal of the driver;
• a second detection apparatus, wherein the second detection apparatus is connected to the output end of the driver, and the second detection apparatus is configured to detect a second signal-to-noise ratio of an output signal of the driver;
• and
• a regulation apparatus, wherein the regulation apparatus is connected to the first detection apparatus, the second detection apparatus, and the gain control apparatus respectively, and the regulation apparatus is configured to adjust a gain of the gain control apparatus based on the first signal-to-noise ratio and the second signal-to-noise ratio;
• and
• a laser, wherein a driving end of the laser is connected to an output end of the driver, and the laser is configured to emit an optical signal under the driving of an output signal of the driver.