9 research outputs found
Multiple Quantum Well Directional Coupler with Photorefractive Grating
We analyse an asymmetric directional coupler with a thin photorefractive grating as a switching and demultiplexing element with memory. The grating is induced by two external beams interfering in the structure of AlGaAs/GaAs multiple quantum wells with an electric field applied along the quantum well planes
Photorefractive Multiple Quantum Well Waveguide as a Bragg Reflector
An interaction between the signal wave propagating in a planar waveguide and a photorefractive grating is analysed. The waveguide contains an AlGaAs/GaAs multiple quantum well guiding layer biased with an external electric field applied along the wells plane. The grating is formed by two external beams interfering in the multiple quantum well layer. The dependence of the steady-state grating properties on the external waves parameters and applied electric field intensity is presented. Possible application of the grating as an optically controlled Bragg reflector with memory is analysed
Multiple Quantum Well Directional Coupler with Photorefractive Grating
We analyse an asymmetric directional coupler with a thin photorefractive grating as a switching and demultiplexing element with memory. The grating is induced by two external beams interfering in the structure of AlGaAs/GaAs multiple quantum wells with an electric field applied along the quantum well planes
Photorefractive Multiple Quantum Well Waveguide as a Bragg Reflector
An interaction between the signal wave propagating in a planar waveguide and a photorefractive grating is analysed. The waveguide contains an AlGaAs/GaAs multiple quantum well guiding layer biased with an external electric field applied along the wells plane. The grating is formed by two external beams interfering in the multiple quantum well layer. The dependence of the steady-state grating properties on the external waves parameters and applied electric field intensity is presented. Possible application of the grating as an optically controlled Bragg reflector with memory is analysed
Asymmetric Directional Coupler Controlled by Photorefractive Grating
An asymmetric three channel directional coupler with a thin photorefractive grating as an all-optical switching and wavelength demultiplexing element with memory is analysed
Photorefractive Grating in Multiple Quantum Well Planar Waveguide
A photorefractive grating in a slab waveguide based on a semi-insulating AlGaAs/GaAs multiple quantum well structure with an electric field applied along the quantum well planes as an optically controlled, frequency selective mode coupling element with memory is analysed
艢wiat艂ow贸d planarny z warstw膮 fotorefrakcyjnych studni kwantowych
New type of planar optical waveguide with a guiding layer consisting of photorefractive multiple quantum well structure is investigated. Results of optical and electro-optical measurements and possible applications for all-optical switching of guided signals are presented.Opisano nowy rodzaj 艣wiat艂owodu planarnego o warstwie prowadz膮cej zawieraj膮cej fotorefrakcjne studnie kwantowe. Przedstawione s膮 wyniki pomiar贸w w艂asno艣ci optycznych i elektro-optycznych uk艂adu oraz pokazane mo偶liwo艣ci zastosowania do ca艂kowicie optycznego prze艂膮czania sygna艂贸w propaguj膮cych si臋 w 艣wiat艂owodzie
Photorefractive Grating in Multiple Quantum Well Planar Waveguide
A photorefractive grating in a slab waveguide based on a semi-insulating AlGaAs/GaAs multiple quantum well structure with an electric field applied along the quantum well planes as an optically controlled, frequency selective mode coupling element with memory is analysed