TY - GEN
T1 - Influence of core diameter and length of polymer optical fiber on Brillouin scattering properties
AU - Mizuno, Yosuke
AU - Ishigure, Takaaki
AU - Nakamura, Kentaro
PY - 2012/2/20
Y1 - 2012/2/20
N2 - Brillouin scattering in perfluorinated graded-index polymer optical fibers (PFGI-POFs) is potentially useful in developing high-accuracy distributed temperature sensors with reduced strain sensitivity. In this study, we investigate, both experimentally and theoretically, the influence of the fiber core diameter and length on the Brillouin gain spectra (BGS) in PFGI-POFs. First, we show that smaller core diameter drastically enhances the Stokes power using PFGI-POFs with 62.5-μm and 120-μm core diameters, and discuss the Brillouin threshold power. Then, we demonstrate that the PFGI-POF length has little influence on the BGS when the length is longer than 50 m. We also predict that, at 1.55-μm wavelength, it is difficult to reduce the Brillouin threshold power of PFGI-POFs below that of long silica single-mode fibers even if their core diameter is sufficiently reduced to satisfy the single-mode condition. Finally, making use of the enhanced Stokes signal, we confirm the Brillouin linewidth narrowing effect.
AB - Brillouin scattering in perfluorinated graded-index polymer optical fibers (PFGI-POFs) is potentially useful in developing high-accuracy distributed temperature sensors with reduced strain sensitivity. In this study, we investigate, both experimentally and theoretically, the influence of the fiber core diameter and length on the Brillouin gain spectra (BGS) in PFGI-POFs. First, we show that smaller core diameter drastically enhances the Stokes power using PFGI-POFs with 62.5-μm and 120-μm core diameters, and discuss the Brillouin threshold power. Then, we demonstrate that the PFGI-POF length has little influence on the BGS when the length is longer than 50 m. We also predict that, at 1.55-μm wavelength, it is difficult to reduce the Brillouin threshold power of PFGI-POFs below that of long silica single-mode fibers even if their core diameter is sufficiently reduced to satisfy the single-mode condition. Finally, making use of the enhanced Stokes signal, we confirm the Brillouin linewidth narrowing effect.
KW - Brillouin gain spectrum
KW - Brillouin scattering
KW - distributed optical fiber sensors
KW - polymer (plastic) optical fiber
UR - http://www.scopus.com/inward/record.url?scp=84856822447&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84856822447&partnerID=8YFLogxK
U2 - 10.1117/12.916047
DO - 10.1117/12.916047
M3 - Conference contribution
AN - SCOPUS:84856822447
SN - 9780819490278
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Third Asia Pacific Optical Sensors Conference
T2 - 3rd Asia Pacific Optical Sensors Conference
Y2 - 31 January 2012 through 3 February 2012
ER -