In-Fiber Subpicosecond Pulse Shaping for Nonlinear Optical Telecommunication Data Processing at 640 Gbit/s [PDF]
International Journal of Optics, 2012 We review recent work on all-fiber (long-period fiber grating) devices for optical pulse shaping, particularly flat-top pulse generation, down to the subpicosecond range and their application for nonlinear switching (demultiplexing) of optical time ...
J. Azaña +9 more
doaj +2 more sources
Radiation Effects on Long Period Fiber Gratings: A Review [PDF]
Sensors, 2020 Over the last years, fiber optic sensors have been increasingly applied for applications in environments with a high level of radiation as an alternative to electrical sensors, due to their: high immunity, high multiplexing and long-distance monitoring capability.
Flavio Esposito +3 more
openaire +4 more sources
Helical Long Period Fiber Grating Inscribed in Elliptical Core Polarization-Maintaining Fiber
IEEE Access, 2021 A high-quality helical long period fiber grating (HLPFG) in elliptical core polarization-maintaining fiber (PMF) was experimentally demonstrated by using the hydrogen-oxygen flame heating technique.
Cailing Fu +3 more
doaj +1 more source
Raman suppression in high-power fiber laser oscillator by long period fiber grating
Results in Physics, 2021 Stimulated Raman scattering (SRS) is a major limiting factor for better performance of high-power fiber lasers. Several spectral filtering methods have been used for Raman suppression, among which long period fiber grating (LPFG) is relatively simple and
Qihao Hu +5 more
doaj +1 more source
Mode Characteristics and Sensing Performance of Fiber Gratings
Journal of Harbin University of Science and Technology, 2022 Fiber gratings are special optical fibers with a periodic refractive index distribution when the refractive index of the fiber core is modulated. Both the angle and period of the gratings have an influence on the sensing properties of the fiber gratings.
ZHANG Jun-xi +3 more
doaj +1 more source
Virtual long-period fiber gratings [PDF]
SPIE Proceedings, 2004 In this paper a theoretical prediction of a new kind of in-fiber devices is presented. They behave essentially like long-period Bragg gratings except for the fact that they are not permanent but volatile. This is because these devices are not formed by the UV-induced increment of the refractive index but by the twisting of a pristine HiBi fiber.
Jáuregui Misas, César +5 more
openaire +2 more sources
Optical Fiber Interferometers Based on Arc-Induced Long Period Gratings at INESC TEC
Sensors, 2021 In this work, we review the most important achievements of an INESC TEC long-period-grating-based fiber optic Michelson and Mach–Zehnder configuration modal interferometer with coherence addressing and heterodyne interrogation as a sensing structure for ...
Paulo Caldas, Gaspar Rego
doaj +1 more source
An Axial Force Sensor Based on a Long-Period Fiber Grating with Dual-Peak Resonance
Photonics, 2023 A high-sensitivity axial force sensor with a large measurement range based on a dual-peak long-period fiber grating (LPFG) is proposed and experimentally demonstrated.
Weixuan Luo +5 more
doaj +1 more source
Transverse Load and Temperature Sensing Using Multiplexed Long-Period Fiber Gratings
Photonics, 2020 The simultaneous measurement of transverse load and temperature using two long-period fiber gratings multiplexed in the wavelength domain is presented experimentally.
Ismael Torres-Gómez +4 more
doaj +1 more source
Two-photon long-period grating inscription in pure-fused-silica photonic crystal fiber [PDF]
, 2007 Photochemical inscription of a long-period grating in a pure fused silica photonic crystal fiber (PCF) is reported.
Brambilla, Gilberto +7 more
core +1 more source