Results 51 to 60 of about 5,314 (159)
Mechanically Induced Long-Period Fiber Gratings and Applications
PhotonicsLong-period fiber gratings (LPFGs) functioning as band-reject filters have played a pivotal role in the realm of optical communication. Since their initial documentation in 1996, LPFGs have witnessed rapid advancements in areas such as optical sensing ...
Jiaqi Ran +7 more
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Sensing Characteristics of Side-Hole Fiber-Based Long-Period Grating
Advances in Materials Science and Engineering, 2013 Long-period gratings (LPGs) have been fabricated in a side-hole fiber (SHF) by using a pulsed CO2 laser. Sensing characteristics of this SHF-LPG to temperature surrounding refractive index and bend have been investigated.
Yi Xin +5 more
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Coupled Mode Characteristics From the Perturbation of 3D Printed Long-Period Fiber Grating Devices
Photonic Sensors, 2020 Characteristics of electric field from a coupled mode inside an optical fiber under perturbation by three-dimensional (3D) printed long-period fiber grating (LPFG) device have been observed in this work by the experiment and simulation.
Ravivudh Khun-In +4 more
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Long period fiber grating in two-core hollow eccentric fiber
Optics Express, 2015 Long period fiber gratings (LPGs) in a two-core hollow eccentric fiber (TCHF) have been demonstrated experimentally. Two LPGs have been fabricated into the respective core of the TCHF by a high frequency CO2 laser. The coupling characteristics in the TCHF-LPG have been studied using the coupling mode theory (CMT).
Tingting, Yuan +6 more
openaire +2 more sources
IEEE Photonics Journal, 2017 We propose a new method to generate orbital angular momentum (OAM) mode by superposing multiple LP11 modes with microphase difference distributed along fiber propagation. This way, OAM mode can be generated by superposing a series of LP11 mode with phase
Yangjin Li +5 more
doaj +1 more source
Optimization of sensitivity in Long Period Fiber Gratings with overlay deposition
Optics Express, 2005 The deposition of an overlay of higher refractive index than the cladding in a Long Period Fiber Grating (LPFG) permits to improve the sensitivity to ambient refractive index changes in a great manner. When the overlay is thick enough, one of the cladding modes is guided by the overlay.
del Villar, Ignacio +3 more
openaire +4 more sources
Ultra-Broadband Mode Converter Using Cascading Chirped Long-Period Fiber Grating
IEEE Photonics Journal, 2019 We propose and demonstrate an ultra-broadband mode converter based on a cascade chirped long-period fiber grating (CLPFG) written in a two-mode fiber.
Mao Feng +4 more
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Optical vortex fiber laser based on modulation of transverse modes in two mode fiber
APL Photonics, 2019 Optical vortices, characterized by helical phase fronts, are usually generated outside the laser cavity using passive modulation methods. Here, we demonstrate an all-fiber laser to directly deliver mode-locked and continuous-wave vortex beams based on ...
Dong Mao +7 more
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Optical Fiber Link Failure Prediction System Based on Long-Period Fiber Grating Mechanical Sensor
Proceedings, 2018 High data rate optical fiber links are usually deployed in core IP networks to transport bulky [..]
Nelson Sotomaior +5 more
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Thin-Core-Fiber-Based Long-Period Fiber Grating for High-Sensitivity Refractive Index Measurement
IEEE Photonics Journal, 2015 We experimentally demonstrated the fabrication of asymmetric long-period fiber gratings (LPFGs) in thin core fiber by use of focused CO2 laser beam.
Cailing Fu +7 more
doaj +1 more source