Results 261 to 270 of about 3,504,310 (335)

Indoor Location Estimation Based on LED Visible Light Communication Using Multiple Optical Receivers

IEEE Communications Letters, 2013
Se-Hoon Yang, E. Jung, Sang‐Kook Han
semanticscholar   +3 more sources

Optical Networks Performance Optimization Based on Hybrid Configurations of Optical Fiber Amplifiers and Optical Receivers

Journal of optical communications, 2019
The 16-channels dense wavelength division multiplexing (DWDM) systems have been optimized by utilizing hybrid configurations of conventional optical fiber amplifiers (EDFA, RAMAN and SOA) and optical photodetectors (PIN, APD(Si) and APD(InGaAs)).
I. Amiri, F. M. A. M. Houssien, A. Rashed, A. Mohammed   +3 more
semanticscholar   +1 more source

Optical Superheterodyne Receiver

Applied Optics, 1967
Optical communications experiments at 6328 A, comparing the fading characteristics of coherent and noncoherent optical detection, have been performed over a 1-km real atmospheric path in different weather conditions. The results show that fading is less severe for noncoherent detection and that the fading characteristic for both types vary ...
R F, Lucy, K, Lang, C J, Peters, K, Duval   +3 more
openaire   +2 more sources

CMOS-Integrated Optical Receivers for On-Chip Interconnects

IEEE Journal of Selected Topics in Quantum Electronics, 2010
S. Assefa, Fengnian Xia, William M. J. Green, C. Schow, A. Rylyakov, Y. Vlasov   +5 more
semanticscholar   +3 more sources

34-GBd Linear Transimpedance Amplifier for 200-Gb/s DP-16-QAM Optical Coherent Receivers

IEEE Journal of Solid-State Circuits, 2019
High spectral efficiency offered by the coherent optical communication links makes them attractive for the next-generation optical communication links.
M. Ahmed, T. Huynh, C. Williams, Yong Wang, P. Hanumolu, A. Rylyakov   +5 more
semanticscholar   +1 more source

Flexible optical receivers

2012 14th International Conference on Transparent Optical Networks (ICTON), 2012
Coherent detection has boosted the applicability of digital signal processing (DSP) in optical fibre communication systems. Based on an universal physical structure, the digital coherent receiver is compatible with a wide range of modulation formats and propagation scenarios. The key for this flexibility lies on an extensive usage of receiver-side DSP.
Armando N. Pinto, Fernando P. Guiomar
openaire   +1 more source

Optical receiver design for high optical return loss

Applied Optics, 1992
A new fiber pigtailed optical receiver design using a single gradient-index rod lens with a beveled exit face achieved a broadband optical return loss of > 65 dB, which was limited by the diffuse reflection from the photodetector front surface. By contrast the optical return loss for a receiver with an unbeveled lens exit face and an on-axis optical ...
D M, Braun, W V, Sorin
openaire   +2 more sources

Optical communications receiver array

SPIE Proceedings, 2010
One of the major challenges to free space laser communications and ladar is the impact of turbulence on beam propagation, one example of which is signal fading. These impacts can be exacerbated on airborne platforms by turbulence in the vicinity of the laser system aperture and the platform wake.
Jonathan M. Saint Clair, Eric Y. Chan, Dennis G. Koshinz, Stephen K. Wilcken, David C. Soreide, Atul Joshi, Hakan Durmus   +6 more
openaire   +1 more source

Optical Receiver Operation

2021
The design of an optical receiver can be quite sophisticated because the receiver must be able to detect weak, distorted signals and make decisions on what type of data was sent based on an amplified and reshaped version of this distorted signal. In the photodetection processes, various noises and distortions will unavoidably be introduced, which can ...
openaire   +1 more source

Metamorphic optical receiver components

The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2003
GaAs based metamorphic HEMT (MHEMT) technology has emerged as an attractive, low cost alternative to InP HEMTs. The strain-induced imperfections caused by high indium content layers on GaAs are eliminated in metamorphic devices by providing a properly grown lattice-matching buffer between the substrate and active device layers.
C.S. Whelan, R.E. Leoni, P.F. Marsh, Y. Zhang, W.E. Hoke, S. Lichwala, S. Lardizabal, J. Hunt, C. Laighton, M. Grigas, T.E. Kazior   +10 more
openaire   +1 more source