Results 221 to 230 of about 39,570 (287)
A Survey of Visible-Light-Communication-Based Indoor Positioning Systems. [PDF]
Sensors (Basel)Wang R, Niu G, Cao Q, Chen CS, Ho SW.
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Integrated silicon reconfigurable optical transmitter
Optics Letters, 2020We demonstrate an integrated silicon reconfigurable optical transmitter based on the reconfigurability of the Mach–Zehnder interferometer (MZI). By incorporating modulators into the tunable MZI structure and manipulating the operation states, different modulation formats, including amplitude/phase modulated binary/quaternary signals, as well as ...
Wei Liu, Sidong Fu, Yu Yu
openaire +2 more sources
2021
Digital coherent optical systems use advanced digital signal processing and modulation techniques at the transmitter and receiver. Therefore, we begin this chapter by reviewing the fundamentals of digital communications, including principles of modulation, channel modeling, and detection. After that, we analyze the basic building blocks that make up an
Darli Augusto de Arruda Mello +1 more
openaire +1 more source
Digital coherent optical systems use advanced digital signal processing and modulation techniques at the transmitter and receiver. Therefore, we begin this chapter by reviewing the fundamentals of digital communications, including principles of modulation, channel modeling, and detection. After that, we analyze the basic building blocks that make up an
Darli Augusto de Arruda Mello +1 more
openaire +1 more source
Optical transmittance of 3D printing materials
Applied Optics, 2021The increasing prevalence of three-dimensional (3D) printing of optical housings and mounts necessitates a better understanding of the optical properties of printing materials. This paper describes a method for using multithickness samples of 3D printing materials to measure transmittance spectra at wavelengths from 400 to 2400 nm [visible to short ...
Shannon M. Hamp +2 more
openaire +2 more sources
Transmitter Optimized Optical Networks
Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2013, 2013Future optical networks will be resource limited and thus optical bandwidth and power must be used sparingly. This paper illustrates the potential network gains available by optimizing the transmitter power, constellation and DWDM channel allocations.
David J. Ives, Seb J. Savory
openaire +1 more source
Optical transmittance measurement system for coated elements with low transmittance
Applied Optics, 2012The low-transmittance elements required for a high power laser facility have stringent specifications about transmittance. To validate optic performance against specifications, a metrology system for transmittance is proposed. The system is composed of a laser source, an integrating sphere, a power meter, and four uncoated wedged glasses.
Wang, Hongyun +3 more
openaire +3 more sources
Optical transmitter for fiber-optic interconnects
Optical Engineering, 1991An optical transmitter for fiber optic interconnects that consists of an off-chip centralized laser in conjunction with on-chip multiple quantum well electroabsorption modulators is proposed and demonstrated, and its performance is discussed.
openaire +1 more source
High-power optical transmitter for optical communication
Integrated Photonics Research, 1990Many optical communication systems, such as those based on free-space propagation, require significantly higher diffraction-limited transmitter power than is available from single-stripe laser diodes. An attractive solution is to use a high-power coupled stripe laser-diode array or broad stripe laser that is externally injection locked to achieve a ...
L. Goldberg +3 more
openaire +1 more source
Reconfigurable optical transmitters and receivers
SPIE Proceedings, 2012Recent advances in electronic data processing allow constructing reconfigurable optical transmitters and receivers, where modulation formats and symbol rates are set by software-controlled field programmable gate arrays (FPGA). We report on such a real-time optical transmitter for 8 modulation formats, which can be swapped in 5 ns without data loss ...
Freude, W. +9 more
openaire +2 more sources