US 11,637,634 B2Granted

Laser emission system and method for compensating for wavelength drift

AssigneeChengdu Superxon Communication Technology Co., Ltd.

InventorHaiyuan Li

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Abstract

Provided are a laser emission system and a method for compensating for wavelength drift. The laser emission system includes a burst signal controller, a laser emitting chip, a TEC controller, and a TEC, the TEC is attached to the laser emitting chip, the burst signal controller is connected with the laser emitting chip and the TEC controller, respectively, the TEC controller is connected with the TEC, and the burst signal controller simultaneously sends a burst control signal to the laser emitting chip and the TEC controller; the laser emitting chip activates or deactivates a laser based on the received burst control signal; the TEC controller correspondingly controls a target temperature of the TEC based on the received burst control signal, so that the target temperature of the TEC is low when the laser is activated, and the target temperature of the TEC is high when the laser is deactivated.

Claims20

Dependent claims

A laser emission system comprising:

a burst signal controller, a laser emitting chip, a Thermoelectric Cooler (TEC) controller, and a Thermoelectric Cooler (TEC),
wherein the TEC is attached directly or indirectly to the laser emitting chip, the burst signal controller is connected with the laser emitting chip and the TEC controller, respectively, and the TEC controller is connected with the TEC;
the burst signal controller is configured to simultaneously send a burst control signal to the laser emitting chip and the TEC controller;
the laser emitting chip is configured to activate or deactivate a laser based on a received burst control signal;
and
the TEC controller is configured to correspondingly control a target temperature of the TEC based on the received burst control signal, so that the target temperature of the TEC is approximated to a first temperature when the laser is activated, and the target temperature of the TEC is approximated to a second temperature when the laser is deactivated, and a temperature difference between the second temperature and the first temperature matches a temperature change resulting from the activation of the laser, wherein the first temperature is lower than the second temperature.

3 more elements

A method for compensating for wavelength drift which is applicable to a laser emission system, the laser emission system comprising a burst signal controller, a laser emitting chip, a TEC controller, and a TEC, wherein the TEC is attached directly or indirectly to the laser emitting chip, the burst signal controller is connected with the laser emitting chip and the TEC controller, respectively, the TEC controller is connected with the TEC, and the method for compensating comprising steps of:

the burst signal controller simultaneously sending a burst control signal to the laser emitting chip and the TEC controller;
the laser emitting chip activating or deactivating a laser based on the received burst control signal;
the TEC controller correspondingly controlling a target temperature of the TEC based on the received burst control signal, so that the target temperature of the TEC is approximated to a first temperature when the laser is activated, and the target temperature of the TEC is approximated to a second temperature when the laser is deactivated, and a temperature difference between the second temperature and the first temperature matches a temperature change resulting from the activation of the laser, wherein the first temperature is lower than the second temperature.

Dependencies are inferred from the claim text.