Perfluorinated graded-index plastic optical fiber Bragg gratings: Observation and theoretical analysis of unique dependence on pressure

The pressure dependence of a fiber Bragg grating (FBG) inscribed in a perfluorinated graded-index plastic optical fiber (POF) is investigated at 1550 nm. As pressure is applied, the Bragg wavelength shifts with a relatively long time constant (several tens of minutes) with a coefficient of 1.3 nm/MP...

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Published in2017 22nd Microoptics Conference (MOC) pp. 224 - 225
Main Authors Ishikawa, Ryo, Heeyoung Lee, Lacraz, Amedee, Theodosiou, Antreas, Kalli, Kyriacos, Mizuno, Yosuke, Nakamura, Kentaro
Format Conference Proceeding
LanguageEnglish
Published The Japan Society of Applied Physics 01.11.2017
Subjects
Fiber gratings
Optical fibers
Polymers
Sensors
Ultrafast optics
Wavelength measurement
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Summary:The pressure dependence of a fiber Bragg grating (FBG) inscribed in a perfluorinated graded-index plastic optical fiber (POF) is investigated at 1550 nm. As pressure is applied, the Bragg wavelength shifts with a relatively long time constant (several tens of minutes) with a coefficient of 1.3 nm/MPa, which is over 5 times the highest value previously reported in other POF-FBGs). After the Bragg wavelength becomes constant at 0.5 MPa, the pressure-dependence coefficient is quickly measured to be -0.13 nm/MPa, the sign of which is opposite to those of other POF-FBGs. These unique behaviors are theoretically analyzed.
DOI:10.23919/MOC.2017.8244567