Application of Levenberg-Marquardt algorithm in the Brillouin spectrum fitting

Chuankai Zhang; Yuanhong Yang; Anqi Li

doi:10.1117/12.807646

13 October 2008 Application of Levenberg-Marquardt algorithm in the Brillouin spectrum fitting

Chuankai Zhang, Yuanhong Yang, Anqi Li

Proceedings Volume 7129, Seventh International Symposium on Instrumentation and Control Technology: Optoelectronic Technology and Instruments, Control Theory and Automation, and Space Exploration; 71291Y (2008) https://doi.org/10.1117/12.807646
Event: Seventh International Symposium on Instrumentation and Control Technology, 2008, Beijing, China

Abstract

Brillouin distributed optical fiber sensing system based on spontaneous Brillouin scattering frequency shift measurement may measure temperature in the optical fiber, due to the dependence of spontaneous Brillouin scattering frequency shift on temperature. In this paper, nonlinear theoretical models of the Brillouin spectrum in the BOTDR temperature sensing system are analyzed. The model parameters are optimized with Levenberg-Marquardt algorithm. By numerical calculation, it is indicated that pseudo-Voigt function can approach approximated the Voigt profile well and quickly.

Citation Download Citation

Chuankai Zhang, Yuanhong Yang, and Anqi Li "Application of Levenberg-Marquardt algorithm in the Brillouin spectrum fitting", Proc. SPIE 7129, Seventh International Symposium on Instrumentation and Control Technology: Optoelectronic Technology and Instruments, Control Theory and Automation, and Space Exploration, 71291Y (13 October 2008); https://doi.org/10.1117/12.807646

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available