TY - JOUR
T1 - Proposal of external modulation scheme for fiber-optic correlation-domain distributed sensing
AU - Noda, Kohei
AU - Han, Giwoon
AU - Lee, Heeyoung
AU - Mizuno, Yosuke
AU - Nakamura, Kentaro
N1 - Funding Information:
Acknowledgments The authors are indebted to Prof. Hiroyuki Uenohara, Tokyo Institute of Technology, for his experimental assistance. This work was supported by JSPS KAKENHI Grant Numbers 17H04930 and 17J07226, and by a research grant from the Fujikura Foundation. ORCID iDs Kohei Noda https://orcid.org/0000-0003-4976-9657 Heeyoung Lee https://orcid.org/0000-0003-3179-0386 Yosuke Mizuno https://orcid.org/0000-0002-3362-4720 Kentaro Nakamura https://orcid.org/ 0000-0003-2899-4484
Publisher Copyright:
© 2019 The Japan Society of Applied Physics.
PY - 2019/2
Y1 - 2019/2
N2 - All the previous configurations of optical correlation-domain reflectometry (OCDR) have been based on the direct modulation of laser driving current. However, some lasers are not designed for high-speed large-amplitude modulation, and the modulation amplitude and frequency are mutually dependent. In this work, to mitigate these drawbacks, we propose an external modulation scheme for OCDR. After confirming its basic operation, we show that a non-specially designed laser can be employed. We also clarify that the interdependence of the modulation amplitude and frequency is negligibly small in this scheme, which is not the case for the conventional direct modulation scheme.
AB - All the previous configurations of optical correlation-domain reflectometry (OCDR) have been based on the direct modulation of laser driving current. However, some lasers are not designed for high-speed large-amplitude modulation, and the modulation amplitude and frequency are mutually dependent. In this work, to mitigate these drawbacks, we propose an external modulation scheme for OCDR. After confirming its basic operation, we show that a non-specially designed laser can be employed. We also clarify that the interdependence of the modulation amplitude and frequency is negligibly small in this scheme, which is not the case for the conventional direct modulation scheme.
UR - http://www.scopus.com/inward/record.url?scp=85062286624&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85062286624&partnerID=8YFLogxK
U2 - 10.7567/1882-0786/aaf416
DO - 10.7567/1882-0786/aaf416
M3 - Article
AN - SCOPUS:85062286624
SN - 1882-0778
VL - 12
JO - Applied Physics Express
JF - Applied Physics Express
IS - 2
M1 - 022005
ER -