Results 71 to 80 of about 35,600 (283)

High-Q distributed-Bragg-grating laser cavities [PDF]

, 2011
Applying Bragg gratings in Al2O3 channel waveguides, we demonstrate distributed Bragg reflectors with Q-factors of 1.02x10e6. An integrated Al2O3:Yb3+ waveguide laser with 67% slope efficiency and 47 mW output power is achieved with such ...
Bernhardi, E.H., Pollnau, M., Ridder, R.M. de, Wolferen, H.A.G.M. van, Wörhoff, K.   +4 more
core   +2 more sources

Long continuously chirped fibre Bragg gratings for compensation of linear- and 3rd order-dispersion

, 1997
For the first time long broadband chirped fibre Bragg gratings with a dispersion profile designed to compensate 3rd order-dispersion are presented. These results demonstrate how the increased demands for dispersion compensation at very high bit-rates can
Cole, M.J., Durkin, M., Ennser, K., Ibsen, M., Laming, R.I.   +4 more
core   +1 more source

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

Advanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi, Norma Mallegni, Andrea Dorigato, Mario Milazzo   +3 more
wiley   +1 more source

Resonant THz sensor for paper quality monitoring using THz fiber Bragg gratings

, 2013
We report fabrication of THz fiber Bragg gratings (TFBG) using CO2 laser inscription on subwavelength step-index polymer fibers. A fiber Bragg grating with 48 periods features a ~4 GHz-wide stop band and ~15 dB transmission loss in the middle of a stop ...
Bock, Wojtek J., Chinifooroshan, Yasser, Markov, Andrey, Skorobogatiy, Maksim, Tripathi, Saurabh M., Yan, Guofeng   +5 more
core   +1 more source

Bioresorbable optical fiber Bragg gratings [PDF]

Optics Letters, 2018
We demonstrate, for the first time, an inscription and wet dissolution study of Bragg gratings in a bioresorbable calcium-phosphate glass optical fiber. Bragg gratings, with average refractive index changes of 5.8×10-4, were inscribed using 193 nm excimer laser radiation.
Pugliese D., Konstantaki M., Konidakis I., Ceci-Ginistrelli E., Boetti N. G., Milanese D., Pissadakis S.   +6 more
openaire   +4 more sources

Optoelectrical Devices for Neural Interfacing: Engineering Integration, Stability, and Multimodal Sensing

Advanced Healthcare Materials, EarlyView.
Implantable optoelectrical devices are an effective resource for the modulation and monitoring of neural activity with high spatiotemporal resolution. This review discusses current challenges faced by these devices and outlines future perspectives for the development of next‐generation neural interfaces targeting chronic, multisite, and multimodal ...
Stella Aslanoglou, Barbara Spagnolo, Antonio Balena, Massimo De Vittorio, Ferruccio Pisanello   +4 more
wiley   +1 more source

Long-term stability decay of standard and regenerated Bragg gratings tailored for high temperature operation

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
Thermal stability of both standard and regenerated Bragg gratings written in normal and photosensitive optical fibers was accessed. An apparent spectral wavelength stabilization of common gratings with no thermal hysteresis was reached after thermal ...
F. K. Coradin, V. de Oliveira, M. Muller, H. J. Kalinowski, J. L. Fabris   +4 more
doaj   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Multi-Directional Strain Measurement in Fiber-Reinforced Plastic Based on Birefringence of Embedded Fiber Bragg Grating

Sensors
Embedded fiber Bragg gratings are increasingly applied for in-situ strain measurement in fiber-reinforced plastics, integral to high-end aerospace equipment.
Chunhua Zhou, Changhao Chen, Zilong Ye, Qi Wu, Ke Xiong   +4 more
doaj   +1 more source

Recording of the Multiplexed Bragg Diffraction Gratings for Waveguides Using Phase Mask

Photonics, 2020
The paper describes a stable method for multiplexed recording of the Bragg diffraction gratings for waveguides using a phase mask. Diffraction waveguides in this experiment were made of photo-thermo-refractive glass.
Maria Shishova, Alexander Zherdev, Dmitrii Lushnikov, Sergey Odinokov   +3 more
doaj   +1 more source