Results 201 to 210 of about 40,705 (261)
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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
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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
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Optical receiver design for high optical return loss
Applied Optics, 1992A 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
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Optical communications receiver array
SPIE Proceedings, 2010One 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 +6 more
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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 ...
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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 ...
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Metamorphic optical receiver components
The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2003GaAs 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 +10 more
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Ultrahigh speed optical receivers
Optical Fiber Communication Conference, 1989A strong trend in fiber-optic technology has been toward the development of higher capacity transmission systems with bit rates as high as 10 Gbit/s being recently demonstrated in the laboratory1 for long span length direct detection systems. Ultrahigh speed optical receivers are required for these systems as well as for future generation analog and ...
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1975
Astronomy differs from other branches of the exact sciences in certain essential ways. While physicists, chemists, geologists, and most other scientists are able not only to observe events in nature but also to interfere experimentally, experimentation is unavailable to the astronomer (if we make an exception of sending radio signals to the Moon and ...
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Astronomy differs from other branches of the exact sciences in certain essential ways. While physicists, chemists, geologists, and most other scientists are able not only to observe events in nature but also to interfere experimentally, experimentation is unavailable to the astronomer (if we make an exception of sending radio signals to the Moon and ...
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Optical Detectors and Receivers
Journal of Lightwave Technology, 1985In this paper, I will review the subjects of optical detectors and optical receivers. I will do this from both a historical perspective and looking ahead toward useful progress that may occur in the future. I will focus, at times, on the lessons learned while performing my own research and development activities, and on how and why the technology has ...
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Ultrawide bandwidth optical receivers
Journal of Lightwave Technology, 1989Low-noise p-i-n/HEMT optical receivers with bandwidths in excess of 16 GHz have recently been developed using advanced microwave design and packaging techniques. Here, state-of-the-art receiver technology, including design tradeoffs and implementation techniques for this class of ultrawide bandwidth receiver, is discussed.
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2006
The invention relates to a symmetrical optical receiver comprising a photodiode (Ph) and a symmetrical transimpedance amplifier (TIA). The cathode (K) and the anode (A) of the photodiode (Ph) are connected via a first capacitor (C1) and second capacitor (C2), respectively, to the first input and second input, respectively, of the symmetrical ...
HELIX AG +3 more
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The invention relates to a symmetrical optical receiver comprising a photodiode (Ph) and a symmetrical transimpedance amplifier (TIA). The cathode (K) and the anode (A) of the photodiode (Ph) are connected via a first capacitor (C1) and second capacitor (C2), respectively, to the first input and second input, respectively, of the symmetrical ...
HELIX AG +3 more
openaire +1 more source