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Laser working state control method and optical module

A technology of working state and control method, applied in the field of optical communication, can solve the problem that the laser cannot be started effectively, and achieve the effect of avoiding false shutdown

Active Publication Date: 2017-03-15
HISENSE BROADBAND MULTIMEDIA TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the laser may not be able to start effectively when the optical module is powered on in the related art, the present invention provides a method for controlling the working state of the laser and an optical module

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  • Laser working state control method and optical module
  • Laser working state control method and optical module
  • Laser working state control method and optical module

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] figure 1 is a flow chart of a method for controlling the working state of a laser provided by an embodiment of the present invention, and the method can be applied to figure 2 In the optical module shown, such as figure 2 As shown, the optical module can include microcontroller 01, TEC 02 and laser 03, refer to figure 1 , the party can include:

[0023] Step 101 , after the optical module is activated for a preset period of time, detect whether the current of the TEC in the optical module is greater than a first current threshold.

[0024] Wherein, starting the optical module may refer to starting each component in the optical module, such as a microcontroller (English: Microcontroller Unit; MCU for short) 01 , TEC 02 and l...

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Abstract

The invention discloses a laser working state control method and an optical module, and belongs to the technical field of optical communication. The laser working state control method is applied to the optical module; the laser working state control method comprises the steps of detecting whether a TEC current in the optical module is greater than a first current threshold value or not after the optical module is started for preset duration; and when the TEC current is greater than the first current threshold value, switching off the laser of the optical module. When a microcontroller unit detects whether the TEC current is greater than the first current threshold value or not, the laser is already in a stable working state, so that the TEC current change tends to be stable. Therefore, misjudgement caused by sudden change of the TEC current due to immediate detection after the microcontroller unit is powered on and started can be avoided, thereby avoiding the wrong switching-off of the laser after the laser is powered on and started.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a method for controlling the working state of a laser and an optical module. Background technique [0002] The laser is the light source device in the optical module, and its working performance and service life are closely related to the working temperature. In general, it is necessary to make the laser work in a stable low temperature environment as much as possible. [0003] In the related art, in order to prevent the working temperature of the laser from being too high and affect the life of the device, the optical module is usually provided with a control circuit for controlling the working temperature and working state of the laser. The control circuit mainly includes: a microcontroller, a semiconductor cooler (English: Thermo Electric Cooler; TEC for short), a TEC driver and a temperature sensor. Among them, the TEC can be attached to the laser to cool the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/131
CPCH01S3/131
Inventor 杨世海张强赵其圣
Owner HISENSE BROADBAND MULTIMEDIA TECH
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