A high precision optical fiber time-delay system

Hong Yan; Zhuo Li; Yanze Gao; Suhui Yang; Xin Wang

doi:10.1117/12.2542681

12 March 2020 A high precision optical fiber time-delay system

Hong Yan, Zhuo Li, Yanze Gao, Suhui Yang, Xin Wang

Proceedings Volume 11434, 2019 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 114340G (2020) https://doi.org/10.1117/12.2542681
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

Time-delay technology is widely used in machine vision, optical communication, laser radar (LIDAR), photoelectric detection and other fields. Compared with electric time-delay technology, optical fiber time-delay technology has many advantages under the condition of large delay time, such as high delay accuracy, good delay stability, small jitter, strong anti-electromagnetic interference ability, and less environmental impact, etc. It has attracted much attention in related fields. In order to achieve a larger delay time and a higher delay accuracy, this paper focused on the high-precision CNC (computerized numerical control) optical fiber delay system applied to laser echo simulator. The system consisted of 16 delay fibers, 16 optical fiber jumpers and 17 optical switches. By using binary gated mode, the delay of 0-64553ns was achieved and the laser echo of 0-5km was simulated. Using 10kHz-100MHz modulated laser, the actual length of 16 delay optical fibers was accurately measured by phase method, and the measurement error was less than 28.6mm. Aiming at the problem that the accuracy of long optical fiber cutting was poor in engineering, a compensation method for changing the delay resolution of the system is proposed, so that the delay precision of the whole system is controlled within 0.984 ns. The effects of temperature changes on the refractive index of the fiber and the length of the fiber on the system delay time are analyzed. The experimental device developed can achieve a delay of 0-64553 ns, a delay resolution of 0.984 ns, and a delay measurement accuracy of 0.14 ns. The system has been successfully applied.

Citation Download Citation

Hong Yan, Zhuo Li, Yanze Gao, Suhui Yang, and Xin Wang "A high precision optical fiber time-delay system", Proc. SPIE 11434, 2019 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 114340G (12 March 2020); https://doi.org/10.1117/12.2542681

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Optical fibers

Fiber lasers

Modulation

Optical switching

Refractive index

Optical simulations

Optical testing

Show All Keywords

Keywords/Phrases

Search In:

Publication Years