Adaptive simultaneous algebraic reconstruction technique for retrieving refractive index profiles of optical fiber

Zheng Chang; Sujuan Huang; Tingyun Wang; Yi Shang; Qianwu Zhang; Cheng Yan; Fang Zou

doi:10.1117/1.OE.55.9.093104

20 September 2016 Adaptive simultaneous algebraic reconstruction technique for retrieving refractive index profiles of optical fiber

Zheng Chang, Sujuan Huang, Tingyun Wang, Yi Shang, Qianwu Zhang, Cheng Yan, Fang Zou

Author Affiliations +

Optical Engineering, Vol. 55, Issue 9, 093104 (September 2016). https://doi.org/10.1117/1.OE.55.9.093104

Abstract

An efficient adaptive simultaneous algebraic reconstruction technique (ASART) to calculate optical fiber refractive index profiles is proposed based on phase difference curves obtained by digital holography technique. We develop adaptive relaxation parameter (ARP) on simultaneous algebraic reconstruction technique (SART) to increase the convergence speed and improve the reconstruction accuracy. A formula of ARP is derived mathematically and multilevel scheme (MLS) is used to increase convergence speed in the first iteration. Experimental results show the proposed ASART convergences over 40% faster than SART and achieve significantly higher reconstruction accuracy. Experimental verification shows that ASART is more efficient than SART and filtered back projection in image reconstruction, especially with few projection views. The running time of ASART is much shorter than that of SART, and ASART needs fewer iteration numbers to obtain the same reconstruction effects. In addition, it can be used to measure optical fibers with various diameters that cannot be measured with S14 refractive index profiler (S14).

Citation Download Citation

Zheng Chang, Sujuan Huang, Tingyun Wang, Yi Shang, Qianwu Zhang, Cheng Yan, and Fang Zou "Adaptive simultaneous algebraic reconstruction technique for retrieving refractive index profiles of optical fiber," Optical Engineering 55(9), 093104 (20 September 2016). https://doi.org/10.1117/1.OE.55.9.093104

Published: 20 September 2016

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