Results 111 to 120 of about 3,391 (228)

A Four-Channel Optical Demultiplexer Using Photonic Crystal-Based Resonant Cavities

open access: yes, 2018
The aim of this paper was to propose and design an all optical four-channel demultiplexer using two-dimensional photonic crystals. To do so a resonant cavity was created by reducing the radius of the two adjacent rods. The radius of these defect rods was
Hassan Absalan
core   +1 more source

Analysis of a Modified Y-Branch CWDM Demultiplexer Based on Photonic Crystal Structure

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
This paper attempts to investigate the design of a modified Y-shaped demultiplexer based on photonic crystal. The designed structure is used to select four telecommunication wavelengths. In our design, four resonant cavities (RC)are utilized.
Oualida El Mansouri, Amel Labbani
doaj   +1 more source

Compact silicon-on-insulator wavelength demultiplexer with heterogeneously integrated InAIAs/InGaAs photodetectors

open access: yes, 2008
We present experimental results of a 4-channel demultiplexer with integrated photodetectors. The device consists of a silicon-on-insulator planar concave grating demultiplexer and heterogeneously integrated III-V ...
Brouckaert, Joost   +7 more
core  

New generation of devices for all-optical communications

open access: yes, 2001
To increase the transmission capacity of future communication networks is becoming very critical. This task can only be accomplished by taking advantage of optical networks where multiplexing techniques such as Dense Wavelength Division Multiplexing ...
Glesk, Ivan   +2 more
core  

Demultiplexer-Schaltung mit Silizium-Schottky-Dioden für faseroptische Empfänger hoher Bitrate [PDF]

open access: yes, 2007
A novel demultiplexer circuit using flip-chip bonded Si Schottky diodes sampling circuit is demonstrated for optical communication receiver. A sampler-based demultiplexer circuit theory is presented and simulated for an optically preamplified direct ...
Choi, Jung Han
core  

Onboard multichannel demultiplexer/demodulator

open access: yes, 1987
An investigation performed for NASA LeRC by COMSAT Labs, of a digitally implemented on-board demultiplexer/demodulator able to process a mix of uplink carriers of differing bandwidths and center frequencies and programmable in orbit to accommodate ...
Campanella, S. Joseph, Sayegh, Soheil
core  

High Speed Pulse Slicer/Demultiplexer With Gain For Use In Solid State Regenerative Amplifier Systems

open access: yes, 1996
A mode-locked solid state laser is disclosed for generating ultrashort optical pulses from a semiconductor type laser. A semiconductor pulse slicer/demultiplexer/modulator with gain amplification is used to modulate and amplify a generated optical beam ...
Delfyett, Peter   +2 more
core  

Fabrication and Characterization of a Quantum Dot Polarization Demultiplexer

open access: yes
We fabricate an inversely-designed nanophotonic quantum dot polarization demultiplexer and observe the coupling of single embedded InAs quantum dot to two orthogonal output ...

core   +1 more source

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