Enhanced performance of Brillouin distributed fiber sensor with hybrid amplification

Nageswara Lalam; Ping Lu; Michael Buric; Paul R. Ohodnicki

doi:10.1117/12.2518391

14 May 2019 Enhanced performance of Brillouin distributed fiber sensor with hybrid amplification

Nageswara Lalam, Ping Lu, Michael Buric, Paul R. Ohodnicki

Proceedings Volume 11000, Fiber Optic Sensors and Applications XVI; 1100003 (2019) https://doi.org/10.1117/12.2518391
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States

Abstract

The sensing range of Brillouin distributed fiber sensors (BDFS) is typically in the order of tens of kilometers due to the attenuation of the optical fiber and restricted input pump power. This limits the use of BDFS in certain long range applications such as oil and gas pipeline monitoring; where maintenance and safety monitoring requires sensing lengths up to hundreds of kilometers. This deterioration in the sensing performance cannot be counteracted by indefinitely increasing the pump power injected into the sensing fiber; as nonlinear effects such as modulation instability, self-phase modulation, and significant pump depletion occurs within the sensing fiber. In this paper, we demonstrate an extended sensing range system for pipeline monitoring using Brillouin optical time domain reflectometry (BOTDR) combined with Raman amplification and inline erbium-doped fiber amplifier (EDFA). Variations in pump light power, propagation direction, and injection location are explored to allow full control over the signal amplification in any particular section of the total sensing fiber length. Thus, the signal-to-noise ratio (SNR) for a certain location along the length of the fiber can be enhanced to provide more useful localized information. By using a continuous wave 1480nm Raman laser, and 980nm-pumped inline EDFA, the proposed system is theoretically validated over 150 km sensing fiber.

Conference Presentation

Citation Download Citation

Nageswara Lalam, Ping Lu, Michael Buric, and Paul R. Ohodnicki "Enhanced performance of Brillouin distributed fiber sensor with hybrid amplification", Proc. SPIE 11000, Fiber Optic Sensors and Applications XVI, 1100003 (14 May 2019); https://doi.org/10.1117/12.2518391

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