Mode-couplings in two cascaded helical long-period fibre gratings and their application to polarization-insensitive band-rejection filter
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2018.04.012
Abstract: Abstract Mode-couplings occurring in cascaded single-helix helical long-period fibre gratings (SHLPGs) have been analysed. Using this type of helical long-period fibre grating combined with a cladding-mode stripper, a simple and efficient method of production of… read more here.
Keywords: rejection; polarization; helical long; filter ... See more keywords
Sensing Characteristics of Helical Long-Period Gratings Written in the Double-Clad Fiber by CO2 Laser
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2018.2855038
Abstract: We demonstrate the fabrication of helical long-period gratings (HLPGs) with the periodic helical index modulation by twisting the double-clad fiber (DCF) while the fiber was exposed by CO2 laser. Torsion, bending, surrounding refractive index, temperature… read more here.
Keywords: double clad; period gratings; co2 laser; fiber ... See more keywords
Helical long-period grating manufactured with a CO2 laser on multicore fiber.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.010405
Abstract: We have demonstrated a helical long-period grating (HLPG) manufactured from multicore fiber (MCF) combined with twist and CO2-laser heating technology. The MCF we used behaves as a kind of single mode fiber. The nineteen cores… read more here.
Keywords: period grating; co2 laser; period; multicore fiber ... See more keywords
Femtosecond laser inscribed helical long period fiber grating for exciting orbital angular momentum.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.449619
Abstract: A method employing femtosecond lasers to inscribe helical long period fiber grating (HLPFG) for exciting orbital angular momentum (OAM) of light is experimentally demonstrated. In this method, the refractive index modulation (RIM) of HLPFG is… read more here.
Keywords: helical long; long period; fiber; period fiber ... See more keywords
Ultrasensitive refractometer based on helical long-period fiber grating near the dispersion turning point.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.456571
Abstract: Precise and accurate measurements of the optical refractive index (RI) for liquids are increasingly finding applications in biochemistry and biomedicine. Here, we demonstrate a dual-resonance helical long-period fiber grating (HLPFG) near the dispersion turning point… read more here.
Keywords: helical long; long period; near dispersion; period fiber ... See more keywords
Multiple core modes conversion using helical long-period fiber gratings.
Sign Up to like & getrecommendations! Published in 2023 at "Optics letters"
DOI: 10.1364/ol.488836
Abstract: We propose and demonstrate the fabrication of an all-fiber mode converter enabling simultaneous generation of multiple high-order core modes, which is realized by inscribing a helical long-period grating (HLPG) in a few-mode fiber (FMF) using… read more here.
Keywords: core; helical long; fiber; core modes ... 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