Results 51 to 60 of about 35,600 (283)

Numerical Analysis of Thermal Dependence of the Spectral Response of Polymer Optical Fiber Bragg Gratings [PDF]

Iraqi Journal for Electrical and Electronic Engineering, 2016
The thermal dependence of the spectral response (i.e. transmission, reflection and time delay (
r) responses) of uniform polymer optical fiber (POF) Bragg gratings has been investigated. In addition to the temperature dependence, the effects of grating
Hisham K. Hisham
doaj  

Perimeter System Based on a Combination of a Mach-Zehnder Interferometer and the Bragg Gratings

Advances in Electrical and Electronic Engineering, 2016
Fiber optic interferometers and Bragg gratings belong to the group of very precise and sensitive devicesthat allow measuring very small deformation, temperature or vibration changes.
Marcel Fajkus, Jan Nedoma, Petr Siska, Lukas Bednarek, Stanislav Zabka, Vladimir Vasinek   +5 more
doaj   +1 more source

In-Fiber Thermally Diffused Coupler and Fiber Bragg Grating Inscribed in Twin-Core Fiber for Sensitivity-Enhanced Vector Bending Sensing

Photonic Sensors, 2023
A vector bending fiber sensor based on core-by-core inscribed fiber Bragg gratings in a twin-core fiber has been proposed and experimentally demonstrated.
Lingzhi Meng, Hongye Wang, Qi Xia, Tingting Yuan, Xiaotong Zhang, Libo Yuan   +5 more
doaj   +1 more source

Phase modulation technique for high modulation wide band planar Bragg grating fabrication [PDF]

, 2013
Direct UV Grating Writing (DGW) is effective route for fabricating high quality Bragg gratings, similar to fiber Bragg gratings, in a planar geometry. We will present a phase modulation controlled DGW method using an Electro-Optical Modulator for planar ...
Gates, J.C., Holmes, C., Mennea, Paolo, Rogers, Helen, Sima, C., Smith, P.G.R., Zervas, M.N.   +6 more
core   +1 more source

Multiband processing of multimode light: combining 3D photonic lanterns with waveguide Bragg gratings

, 2013
The first demonstration of narrowband spectral filtering of multimode light on a 3D integrated photonic chip using photonic lanterns and waveguide Bragg gratings is reported. The photonic lanterns with multi-notch waveguide Bragg gratings were fabricated
Gross, Simon, Ireland, Michael J., Jovanovic, Nemanja, Lawrence, Jon S., Spaleniak, Izabela, Williams, Robert J., Withford, Michael J.   +6 more
core   +1 more source

The Infrared Imaging Spectrograph (IRIS) for TMT: Volume phase holographic grating performance testing and discussion [PDF]

, 2014
Maximizing the grating efficiency is a key goal for the first light instrument IRIS (Infrared Imaging Spectrograph) currently being designed to sample the diffraction limit of the TMT (Thirty Meter Telescope). Volume Phase Holographic (VPH) gratings have
Chen, Shaojie, Larkin, James E., Maire, Jerome, Meyer, Elliot, Mieda, Etsuko, Moore, Anna M., Simard, Luc, Wright, Shelley A.   +7 more
core   +2 more sources

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +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

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

Advanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner, Julian Burkhart, Kateryna Borysova, Chiara Mazzariol, Klaus Müller‐Buschbaum   +4 more
wiley   +1 more source

Etched Polymer Fibre Bragg Gratings and Their Biomedical Sensing Applications

Sensors, 2017
Bragg gratings in etched polymer fibres and their unique properties and characteristics are discussed in this paper. Due to the change in material and mechanical properties of the polymer fibre through etching, Bragg gratings inscribed in such fibres ...
Ginu Rajan, Kishore Bhowmik, Jiangtao Xi, Gang-Ding Peng   +3 more
doaj   +1 more source