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Laser wavelength control method and device

A wavelength control and laser technology, applied in the field of lasers, can solve the problems of adjusting the wavelength center value and errors for a long time, achieve the effect of improving accuracy and efficiency, and saving debugging time

Active Publication Date: 2022-05-13
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, manual operation is required to adjust the wavelength to stabilize it within the required range, but due to manual operation, inevitable errors are introduced and it takes a long time to adjust the disadvantages of the central value of the wavelength.

Method used

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  • Laser wavelength control method and device
  • Laser wavelength control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An embodiment of the present invention provides a laser wavelength control method, characterized in that the method includes:

[0029] applying a perturbation signal to the laser die heater;

[0030] Detect disturbance response signal;

[0031] According to the disturbance response signal, a locking center value of the laser die heater is set; the locking center value is used to lock the wavelength of the laser.

[0032] In the embodiment of the present invention, by applying a disturbance signal to the laser die heater; detecting the disturbance response signal; and setting the locking center value of the laser die heater according to the disturbance response signal, manual adjustment is not required, only writing The data provided by the supplier achieves the effect of automatic wavelength adjustment, saves debugging time, and thus significantly improves the wavelength locking accuracy and efficiency.

[0033] Prefixes such as "first" and "second" used in the embodi...

Embodiment 2

[0101] Such as figure 2 and Figure 9 As shown, a laser wavelength control device, the device includes a control unit 91 and a storage unit 92; the storage unit 92 stores a laser wavelength control computer program, and the control unit executes the computer program to achieve the following steps:

[0102] applying a perturbation signal to the laser die heater;

[0103] Detect disturbance response signal;

[0104]According to the disturbance response signal, a locking center value of the laser die heater is set; the locking center value is used to lock the wavelength of the laser.

[0105] Wherein, the control unit in the embodiment of the present invention can be FPGA, and the storage unit is a storage module built in the FPGA; of course, the control unit in the embodiment of the present invention can also be a CPU (Central Processing Unit).

[0106] In the embodiment of the present invention, by applying a disturbance signal to the laser die heater; detecting the disturb...

Embodiment 3

[0127] An embodiment of the present invention provides a computer-readable storage medium, which is characterized in that the storage medium stores a laser wavelength control computer program, and when the computer program is executed by at least one processor, any A step of said method.

[0128] The computer readable storage medium in the embodiment of the present invention may be RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art. A storage medium may be coupled to the processor such that the processor can read information from, and write information to, the storage medium, or it may be an integral part of the processor. The processor and storage medium may be located in an application specific integrated circuit.

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PUM

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Abstract

The invention discloses a laser wavelength control method and device, which are used to improve the wavelength adjustment precision of the existing laser and reduce the wavelength adjustment time. The method includes: applying a disturbance signal to a laser die heater; detecting a disturbance response signal; setting a locking center value of the laser die heater according to the disturbance response signal; the locking center value is used to lock the Laser wavelength.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a laser wavelength control method and device. Background technique [0002] At present, the main function of the laser automatic power control circuit (APC circuit, Automatic Power Control) is to stabilize the bias current of the laser. When the bias current of the laser remains unchanged, in order to keep the output light wavelength (frequency) of the laser stable, it is necessary to Ensure that the temperature of the laser die is stable. The main function of the laser automatic temperature control circuit (ATC circuit, Automatic Temperature Control) is to stabilize the temperature of the optical device substrate. When the temperature of the optical device substrate is higher than the design working temperature, the ATC control circuit makes the cooler (TEC, Thermo Electric Cooler) in the laser component obtain a positive cooling current, the cooler absorbs heat, and the temperature of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/13
CPCH01S3/1305
Inventor 吴龙龙
Owner ZTE CORP
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