Algorithm optimization of Er-doped Superfluorescent Fiber Source Feedback Control Module

• Published in: Chinese Control Conference pp. 4248 - 4252
• Main Authors: Zhang, Enkang, Xue, Bing, Yang, Liu, Liu, Yuanheng, Gao, Zhongxing, Zhang, Yonggang
• Format: Conference Proceeding
• Language: English
• Published: Technical Committee on Control Theory, Chinese Association of Automation 01.07.2019
• Subjects: Er-doped superfluorescent source; Feedback control; Feedback control module; Incremental differential-ahead PID control algorithm; Laser stability; Mean wavelength thermal stability; Output power stability; PD control; PI control; Power generation; Stability analysis; Thermal stability
• ISSN: 1934-1768
• DOI: 10.23919/ChiCC.2019.8866641

Feedback control module, as an important unit that exists in the Er-doped superfluorescent fiber source's (ED-SFS's) circuit system, shows high significance to the output characteristics of ED-SFS. In this paper, we put forward an optimized feedback control module scheme utilizing the incremental differential-ahead proportion-integral-derivation (IDA-PID) control algorithm. We theoretically analyze this control algorithm and compare it with the other two PID control algorithms. The experimental results show that, with the IDA-PID algorithm, the output power stability of ED-SFS can be reduced from 2.13% to 1.65%, and the mean wavelength thermal stability can be reduced from 261ppm to 148ppm over one hundred degrees Celsius (-40°C~+60°).