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Current protection device and method for laser

A current protection and laser technology, applied in the field of lasers, can solve problems such as damage to semiconductor lasers, and achieve the effects of low protection, high reliability, and safety protection

Pending Publication Date: 2022-08-09
O NET COMM SHENZHEN
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The existing software current limiting protection scheme still has the risk of causing damage to the semiconductor laser. Therefore, it is very important for this field to design a safe and reliable protection device and method for the maximum operating current of the semiconductor laser.

Method used

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  • Current protection device and method for laser
  • Current protection device and method for laser
  • Current protection device and method for laser

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Embodiment Construction

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] like figure 1 As shown, the present invention provides a preferred embodiment of a current protection device for a laser.

[0035] A laser current protection device, and reference figure 1 , the current protection device of the laser includes a drive unit 1 for driving the laser to work; a power supply unit 2, the output end of the power supply unit 2 is connected to the first input end of the drive unit 1; the current control unit 3, with To control the operating driving current of the laser; the voltage limiting unit 4, the first input end of the voltage limiting unit 4 is connected to the output end of the current control unit 3, and the output end of the voltage limiting unit 4 is connected to the driving unit The second input end of 1 is connected; the voltage adjusting unit 5 , the first output end of the voltage adjusting unit...

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Abstract

The invention relates to the field of lasers, in particular to a current protection device and method of a laser. The circuit comprises a driving unit, a power supply unit, a current control unit, a voltage limiting unit and a voltage adjusting unit, wherein the output end of the power supply unit is connected with the first input end of the driving unit; the first input end of the voltage limiting unit is connected with the output end of the current control unit, and the output end of the voltage limiting unit is connected with the second input end of the driving unit; the first output end of the voltage regulator is connected with the second input end of the voltage limiting unit; the voltage adjusting unit adjusts the clamping voltage of the voltage limiting unit, and the voltage limiting unit limits the voltage input by the current control unit according to the clamping voltage and then outputs the voltage to the driving unit; the current protection device is simple in circuit principle and easy to implement, the maximum driving current of the laser can be accurately protected with low hardware cost, and the current protection device is more reliable compared with a software protection scheme.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a current protection device and method for a laser. Background technique [0002] With the development of optical communication technology, more and more dual-core semiconductor lasers with co-packaged and common power supply have come into commercial use. Protect the maximum drive current of each laser core. [0003] The existing software current limiting protection scheme still has the risk of causing damage to the semiconductor laser. Therefore, it is very important in the art to design a safe and reliable protection device and method for the maximum working current of the semiconductor laser. SUMMARY OF THE INVENTION [0004] The technical problem to be solved by the present invention is to provide a safe and reliable protection device and method for the maximum working current of a semiconductor laser in view of the above-mentioned defects of the prior art, which overcomes the progr...

Claims

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Application Information

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IPC IPC(8): H01S5/042H02H7/20H02H9/04
CPCH01S5/042H02H9/04H02H7/20
Inventor 王智儒杨明春邓韬
Owner O NET COMM SHENZHEN
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