The calculation of a two-cascade long-period fiber grating of the refractive index
Физика волновых процессов и радиотехнические системы, 2022 A method is proposed for calculating the spectral characteristics of cascade long-period fiber gratings of the refractive index of the core based on the method of partial regions and decomposition. According to the method, the structure is represented as
Roman V. Budaragin +3 more
doaj +1 more source
Arc-Induced Long Period Gratings in Erbium-Doped Fiber
IEEE Photonics Journal, 2019 In this paper, we report about the fabrication of long period gratings (LPGs) directly into an Erbium-doped fiber, by using the electric arc discharge technique. The attention is focused on the writing process and the resulting properties, by considering
Flavio Esposito +2 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
Calculation of optical-waveguide grating characteristics using Green's functions and the Dyson's equation [PDF]
, 2006 We present a method for calculating the transmission spectra, dispersion, and time delay characteristics of optical-waveguide gratings based on Green's functions and Dyson's equation.
Mortensen, Niels Asger, Rindorf, Lars
core +2 more sources
Long-period gratings in chalcogenide fibers
Optics Express, 2006 We report the first demonstration of long period gratings in single mode As(2)Se(3) chalcogenide glass fiber. The grating is implemented by pressing a threaded rod against a short piece of fiber. Its strength can be tuned over a 25 dB range, has high repeatability, and is fully reversible.
Dominik, Pudo +2 more
openaire +2 more sources
Sensing Features of Arc-induced Long Period Gratings
Proceedings, 2019 In this work, we report a systematic investigation about the sensitivity of arc-induced Long Period Gratings in standard SMF28 fiber. Several gratings were fabricated with period Λ in range 330−630 µm and characterized towards changes in ...
Flavio Esposito +3 more
doaj +1 more source
Fabrication of strong long-period gratings in hydrogen-free fibers with 157-nm F
, 2001 Long-period gratings were fabricated in standard telecommunication fiber (Corning SMF-28) by use of what is believed to be record short-wavelength light from a 157-nm F2 laser.
Chen, KP, Herman, PR, Tam, R, Zhang, J
core +1 more source
Ultra-wide detuning planar Bragg grating fabrication technique based on direct UV grating writing with electro-optic phase modulation [PDF]
, 2013 A direct UV grating writing technique based on phase-controlled interferometry is proposed and demonstrated in a silica-on-silicon platform, with a wider wavelength detuning range than any previously reported UV writing technology.
Gates, J.C. +6 more
core +1 more source
Compact focusing grating couplers for silicon-on-insulator integrated circuits [PDF]
, 2007 —We report experimental results on compact and broadband focusing grating couplers, both in silicon-on-insulator (SOI) and gold on SOI. An eight-fold length reduction of the coupling structure from fiber to photonic wire in SOI, as com-pared to a linear ...
Dirk Taillaert +10 more
core +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