Low-Loss Random Fiber Gratings Made With an fs-IR Laser for Distributed Fiber Sensing
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2019.2917389
Abstract: By using the plane-by-plane grating inscription method with an fs-IR laser, random fiber gratings with low laser-induced loss were fabricated in SMF-28 fiber for distributed temperature sensing. Compared to conventional random gratings having broadband backscattering… read more here.
Keywords: loss; random fiber; laser; fiber gratings ... See more keywords
Automatic Arc Discharge-Induced Helical Long Period Fiber Gratings and Its Sensing Applications
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Technology Letters"
DOI: 10.1109/lpt.2017.2693361
Abstract: We experimentally demonstrate an automatic arc discharge technology for inscribing high-quality helically twisted long period fiber gratings (H-LPFGs) with greatly improved inscription efficiency for single mode fibers. The proposed technology has been developed by implementing… read more here.
Keywords: fiber gratings; arc discharge; automatic arc; period fiber ... See more keywords
Improvement of Bandpass Filter Response by Aligning LP11 Mode Between In-Line Fiber Gratings
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Technology Letters"
DOI: 10.1109/lpt.2017.2722439
Abstract: Force-induced long-period fiber gratings are formed in a graded-index two-mode fiber and a step-index two-mode fiber in series to build an all-fiber bandpass filter. The passband transmittance and bandwidth in the filter response are refined… read more here.
Keywords: mode; filter response; fiber gratings; lp11 mode ... See more keywords
Reflective-Type Multiparameter Sensor Based on a Paired Helical Fiber Gratings and a Trapezoid-Like Microcavity
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2022.3169556
Abstract: A reflective-type fiber sensor allowing the simultaneous measurements of directional torsion, strain, and temperature is proposed and experimentally demonstrated, which is realized by using a paired helical long-period fiber gratings and a trapezoid-like microcavity (PHLPGs-TLMC).… read more here.
Keywords: fiber gratings; reflective type; paired helical; fiber ... See more keywords
Long-period fiber gratings inscribed in few-mode fibers for discriminative determination.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.026307
Abstract: We successfully fabricated the long-period fiber gratings in few-mode fibers (FMF-LPFGs) with micro-tapered method, which are different from the traditional LPFGs that only couple the fundamental mode to different cladding modes to obtain multiple resonant… read more here.
Keywords: discriminative determination; mode; fiber gratings; mode fibers ... See more keywords
Efficient long period fiber gratings inscribed with femtosecond pulses and an amplitude mask.
Sign Up to like & getrecommendations! Published in 2019 at "Optics letters"
DOI: 10.1364/ol.44.003980
Abstract: We present efficient long period fiber gratings written with femtosecond laser pulses at 800 nm and an amplitude mask, to the best of our knowledge, for the first time. The measured transmission spectra depict strong resonances,… read more here.
Keywords: amplitude mask; long period; period fiber; fiber gratings ... See more keywords
Review of Helical Long-Period Fiber Gratings
Sign Up to like & getrecommendations! Published in 2021 at "Photonics"
DOI: 10.3390/photonics8060193
Abstract: In this paper, comprehensive remarks are given that focus on the main fabrications and wide applications of helical long-period fiber gratings (HLPGs). Firstly, the techniques of fabricating HLPGs by CO2 laser, hydrogen–oxygen flame heating, and… read more here.
Keywords: long period; helical long; fiber gratings; period fiber ... See more keywords