Design and implementation of a constant current driving circuit for high stability fiber optic device
The stability of the wavelength and output power of the fiber laser is susceptible to fluctuations in the pump drive current, and a high-precision, high-stability constant-current drive system has been designed to cope with this problem. The constant current source part adopts the closed-loop negati...
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| Format: | Article |
| Language: | zho |
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National Computer System Engineering Research Institute of China
2025-04-01
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| Series: | Dianzi Jishu Yingyong |
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| Online Access: | http://www.chinaaet.com/article/3000171274 |
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| _version_ | 1849433347582853120 |
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| author | Wang Tuo Tang Dedong Wang Kai Zhang Shumin Li Xinyu Meng Kun |
| author_facet | Wang Tuo Tang Dedong Wang Kai Zhang Shumin Li Xinyu Meng Kun |
| author_sort | Wang Tuo |
| collection | DOAJ |
| description | The stability of the wavelength and output power of the fiber laser is susceptible to fluctuations in the pump drive current, and a high-precision, high-stability constant-current drive system has been designed to cope with this problem. The constant current source part adopts the closed-loop negative feedback principle to control the consistent current output through the Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), realizing the precise control of the semiconductor laser (LD) drive current. The current-limiting protection circuit protects the LD from overcurrent shocks by utilizing the diode's limiting effect, and the current slow start uses a software-controlled method to protect LD from inrush current damage. The ADA4530 chip is used in the optical power detection circuit to ensure accurate detection of power output even at deficient light levels. The experimental results show that the circuit can achieve continuous adjustment of the drive current from 0 A to 1.2 A, with short-term (120 min) and long-term (24 h) current stability of 0.001 mA and 0.002 mA, respectively. The wavelength fluctuation of the laser center does not exceed 0.03 nm, and the stability of the output power does not exceed 0.084 3%, with an accuracy of less than ±0.15 mW. |
| format | Article |
| id | doaj-art-abbaa8bdaca843369d9063e89e6ba42c |
| institution | Kabale University |
| issn | 0258-7998 |
| language | zho |
| publishDate | 2025-04-01 |
| publisher | National Computer System Engineering Research Institute of China |
| record_format | Article |
| series | Dianzi Jishu Yingyong |
| spelling | doaj-art-abbaa8bdaca843369d9063e89e6ba42c2025-08-20T03:27:06ZzhoNational Computer System Engineering Research Institute of ChinaDianzi Jishu Yingyong0258-79982025-04-01514495310.16157/j.issn.0258-7998.2448263000171274Design and implementation of a constant current driving circuit for high stability fiber optic deviceWang Tuo0Tang Dedong1Wang Kai2Zhang Shumin3Li Xinyu4Meng Kun5College of Electrical Engineering， Chongqing Science and Technology UniversityCollege of Electrical Engineering， Chongqing Science and Technology UniversityPetroChina Southwest Oil & Gas Field Sichuan Northwest Gas Mine SichuanCollege of Electrical Engineering， Chongqing Science and Technology UniversityCollege of Electrical Engineering， Chongqing Science and Technology UniversityQingdao Quenda Terahertz Technology Co.， Ltd.The stability of the wavelength and output power of the fiber laser is susceptible to fluctuations in the pump drive current, and a high-precision, high-stability constant-current drive system has been designed to cope with this problem. The constant current source part adopts the closed-loop negative feedback principle to control the consistent current output through the Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), realizing the precise control of the semiconductor laser (LD) drive current. The current-limiting protection circuit protects the LD from overcurrent shocks by utilizing the diode's limiting effect, and the current slow start uses a software-controlled method to protect LD from inrush current damage. The ADA4530 chip is used in the optical power detection circuit to ensure accurate detection of power output even at deficient light levels. The experimental results show that the circuit can achieve continuous adjustment of the drive current from 0 A to 1.2 A, with short-term (120 min) and long-term (24 h) current stability of 0.001 mA and 0.002 mA, respectively. The wavelength fluctuation of the laser center does not exceed 0.03 nm, and the stability of the output power does not exceed 0.084 3%, with an accuracy of less than ±0.15 mW.http://www.chinaaet.com/article/3000171274fiber laserconstant current drivestabilitypump source |
| spellingShingle | Wang Tuo Tang Dedong Wang Kai Zhang Shumin Li Xinyu Meng Kun Design and implementation of a constant current driving circuit for high stability fiber optic device Dianzi Jishu Yingyong fiber laser constant current drive stability pump source |
| title | Design and implementation of a constant current driving circuit for high stability fiber optic device |
| title_full | Design and implementation of a constant current driving circuit for high stability fiber optic device |
| title_fullStr | Design and implementation of a constant current driving circuit for high stability fiber optic device |
| title_full_unstemmed | Design and implementation of a constant current driving circuit for high stability fiber optic device |
| title_short | Design and implementation of a constant current driving circuit for high stability fiber optic device |
| title_sort | design and implementation of a constant current driving circuit for high stability fiber optic device |
| topic | fiber laser constant current drive stability pump source |
| url | http://www.chinaaet.com/article/3000171274 |
| work_keys_str_mv | AT wangtuo designandimplementationofaconstantcurrentdrivingcircuitforhighstabilityfiberopticdevice AT tangdedong designandimplementationofaconstantcurrentdrivingcircuitforhighstabilityfiberopticdevice AT wangkai designandimplementationofaconstantcurrentdrivingcircuitforhighstabilityfiberopticdevice AT zhangshumin designandimplementationofaconstantcurrentdrivingcircuitforhighstabilityfiberopticdevice AT lixinyu designandimplementationofaconstantcurrentdrivingcircuitforhighstabilityfiberopticdevice AT mengkun designandimplementationofaconstantcurrentdrivingcircuitforhighstabilityfiberopticdevice |