Method for achieving semiconductor cooler control loop based on software

A technology of control loop and implementation method, applied in the direction of temperature control, non-electric variable control, control/regulation system, etc., can solve the debugging and testing of optical transceiver modules, inconvenient problem location, no digitization of working parameters, and circuit board layout Area tension and other problems, to achieve the effect of convenient debugging and testing and problem location, saving layout area, and facilitating later maintenance

Inactive Publication Date: 2014-12-03
四川华拓光通信股份有限公司
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  • Abstract
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Problems solved by technology

[0005] The disadvantage of this technology is that the entire control circuit is an analog circuit, and the working parameters are not digitized, which brings some inconvenience to the debugging and testing of the optical transceiver module and problem location
In addition, the packaging of optical transceiver modules is becoming more and more miniaturized, and the layout area of ​​circuit boards is becoming more and more tight, while the control circuit composed of analog circuits occupies a considerable layout area.

Method used

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  • Method for achieving semiconductor cooler control loop based on software
  • Method for achieving semiconductor cooler control loop based on software
  • Method for achieving semiconductor cooler control loop based on software

Examples

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Embodiment

[0082] The resistance value of the thermistor 101 changes as the temperature of the semiconductor laser (not shown) or the electroabsorption modulator (not shown); the thermistor 101, the voltage divider resistor 102, and the reference voltage 103 form a voltage divider network , can output one road representing the voltage value of the current temperature analog of the semiconductor laser (not shown) or electroabsorption modulator (not shown) to 104 A / D converters; 104 A / D converters are used to convert the current temperature analog and The target temperature analog quantity is converted into a digital quantity and sent to the microprocessor 105; the microprocessor 105 calculates the control signal quantity that needs to be output to the refrigeration driver through a software algorithm, and converts the received control signal quantity into After the analog voltage is output, the refrigerator driver outputs and controls the driving current of the semiconductor refrigerator a...

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Abstract

The invention discloses a method for achieving a semiconductor cooler control loop based on software. A control circuit part in a semiconductor refrigeration control loop is digitalized through the software, and debugging, testing and problem positioning on a light receiving and transmitting module are facilitated. An analog control circuit in the technical scheme in the prior art is omitted, the layout area of the circuit board is reduced, the packaging of the light receiving and transmitting module becomes smaller and smaller, the material cost of the light receiving and transmitting module is reduced, a circuit structure and a software scheme through which the circuit board space can be saved and the cost can be reduced can be provided for the light receiving and transmitting module, and the method is worthy of being greatly popularized.

Description

technical field [0001] The invention relates to a semiconductor refrigerator in the field of optical communication, in particular to a method for realizing a control loop of a semiconductor refrigerator based on software. Background technique [0002] Optical communication lasers are usually semiconductor lasers, and the wavelength characteristics of such lasers generally change with temperature. In a Dense Wavelength Division (DWDM) communication system, the wavelength interval between adjacent channels is less than 1nm, so the emission wavelength of the semiconductor laser is required to be very stable, and the change does not exceed 0.2nm, which requires the operating temperature of the semiconductor laser to be very stable. . Moreover, it is often necessary to change the operating wavelength of the semiconductor laser by changing the temperature of the semiconductor laser to meet the requirements of the DWDM communication system for the center wavelength of the laser. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/24
Inventor 范巍卢德海
Owner 四川华拓光通信股份有限公司
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