Quasi-single mode operated few-mode fiber for distributed acoustic sensing
Name:
Quasi-Single Mode Operated Few-Mode Fiber for Distributed Acoustic Sensing.pdf
Size:
1.142Mb
Format:
PDF
Description:
Accepted manuscript
Type
Conference PaperKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Photonics Laboratory
KAUST Grant Number
BAS/1/1614-01-01GEN/1/6607-01-01
KCR/1/2081-01-01
Date
2019-11-21Permanent link to this record
http://hdl.handle.net/10754/661887
Metadata
Show full item recordAbstract
We experimentally report a proof-of-concept demonstration of a few-mode fiber (FMF) based distributed acoustic sensor (DAS) design, aiming at upgrading the capabilities of the typical DAS that employs the standard single mode fiber (SMF). We only excite the fundamental mode at the input port of the FMF, and further, we minimize the impact of intermodal coupling within it such that the FMF operates in a quasi-single mode (QSM) state. The QSM operated FMF keeps the basic operation principle of the DAS valid and, in comparison with the standard SMF, it allows injection of higher pump peak-power before reaching the threshold power of nonlinearity. We validate our design by sensing vibration events produced by a piezoelectric transducer (PZT) cylinder. The FMF based DAS successfully figures out the locations and frequencies of these events. This reported design would enable the realization of a DAS design with longer sensing range and higher spatial resolution, in comparison to the standard SMF based DAS.Citation
Ashry, I., Mao, Y., Ng, T. K., Hveding, F., Arsalan, M., & Ooi, B. S. (2019). Quasi-single mode operated few-mode fiber for distributed acoustic sensing. Advanced Sensor Systems and Applications IX. doi:10.1117/12.2537830Sponsors
The authors gratefully acknowledge the financial support provided to this work by the Saudi Aramco under Grant No. RGC/3/3138-01. This work is partially supported by King Abdullah University of Science and Technology (KAUST) baseline funding (BAS/1/1614-01-01), KAUST equipment funding KCR/1/2081-01-01, and GEN/1/6607-01-01.Publisher
SPIE-Intl Soc Optical EngConference/Event name
Advanced Sensor Systems and Applications IX 2019ae974a485f413a2113503eed53cd6c53
10.1117/12.2537830