Results 21 to 30 of about 283,378 (319)
IEEE Photonics Journal, 2023 The performance of a dual-hop mixed radio frequency (RF)/free space optical (FSO) system with co-channel interferences (CCIs) is studied for both fixed-gain and variable-gain amplify-and-forward(AF) relaying scenarios.
Junrong Ding +5 more
doaj +1 more source
Journal of Applied Physics, 2011 We present a generic microcavity platform for cavity experiments on optically active nanostructures, such as quantum dots, nanocrystals, color centers, and carbon nanotubes. The cavity is of the Fabry-Pérot type with a planar back mirror and a miniature concave top mirror with radius of curvature ∼ 100 μm.
Barbour, Russell J. +8 more
openaire +2 more sources
Generation of widely tunable picosecond pulses with large SMSR by externally injecting a gain-switched dual laser source [PDF]
, 2004 The authors demonstrate a procedure of generating picosecond optical pulses that are tunable over a wide wavelength range (65 nm) and have very high spectral purity side-mode suppression ratio [(SMSR)>60 dB].
Anandarajah, Prince M. +2 more
core +1 more source
Tunable photonic crystal filter for terahertz frequency applications [PDF]
, 2003 In this Paper we investigate a tunable metallic photonic crystal filter with a novel mechanical tuning method, suitable for use in terahertz frequency applications.
Blaikie, R.J. +5 more
core +1 more source
High-Efficiency Optical Parametric Oscillator Based on Stimulated Brillouin Scattering Pulse Shaping
IEEE Photonics Journal, 2019 We present an optical parametric oscillator (OPO) that uses a pump pulse shape tailored by stimulated Brillouin scattering. The theoretical analysis is carried out for comparison between Gaussian pump and the step function pulse pump.
Yulei Wang +5 more
doaj +1 more source
Gm-APD LiDAR Single-Source Data Self-Guided: Obtaining High-Resolution Depth Map
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Geiger-mode avalanche photodiode (Gm-APD) array LiDAR has become the current research focus due to its sensitive response, high precision, and easy integration. However, due to the limitations of the fabrication process and manufacturing cost, the images
Boyi Song +5 more
doaj +1 more source
Frontiers in Optics 2014, 2014 We report the implementation of a tunable beam displacer, composed of a polarizing beam splitter (PBS) and two mirrors, that divides an initially polarized beam into two parallel beams whose separation can be continuously tuned. The two output beams are linearly polarized with either vertical or horizontal polarization and no optical path difference is
Salazar Serrano, Luis Jose +2 more
openaire +6 more sources
Tunable periodic microstrip structure on GaAs wafer [PDF]
, 2009 A one dimensional tunable periodic structure in microstip technology on gallium arsenide (GaAs) substrate is numerically investigated. The unit cell contains a number of patches positioned between the ground plane and the microstrip line.
K. ESSELLE +4 more
core +1 more source
Application of DMLF in Pulse Ranging LiDAR System
Applied Sciences, 2021 A novel differential method based on linear fitting is proposed to improve the accuracy of the pulse-ranging system. In this method, the Peak Points (PPs) of the traditional echo signal transformed into the Positive-Going Zero-Crossing Points (PGZCPs) of
Dongbing Guo, Chunhui Wang, Baoling Qi
doaj +1 more source
Modeling of Wireless Sensor Nodes Powered by Tunable Energy Harvesters: HDL-Based Approach [PDF]
, 2012 This paper presents a hardware description language (HDL) approach to modeling a complete wireless sensor node system powered by a tunable vibration energy harvester including both energy generation and consumption.
Merrett, Geoff V. +5 more
core +1 more source