Results 21 to 30 of about 70,027 (278)
Sensors, 2023 This paper presents a real-time underwater wireless optical communication (UWOC) system. The transmitter of our UWOC system is equipped with four blue LEDs, and we have implemented pre-emphasis technology to extend the modulation bandwidth of these LEDs.
Minglun Zhang, Hongyu Zhou
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On the Use of Gaussian Approximation in Analyzing the Performance of Optical Receivers
IEEE Photonics Journal, 2014 The analytical calculation of the bit error rate (BER) of digital optical receivers that employ avalanche photodiodes (APDs) is challenging due to 1) the stochastic nature of the avalanche photodiode's impulse-response function and 2) the presence of ...
G. El-Howayek +5 more
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Synthesis method for distributed amplifiers
Journal of Telecommunications and Information Technology, 2003 New design method is presented for distributed amplifiers (DA). It is shown that by proper design of the applied transmission lines (TL) between the active devices the image impedance and the cut-off frequency COF of the input or output line of the DA ...
Attila Zólomy
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Quantum Receivers for Entanglement Assisted Classical Optical Communications
IEEE Photonics Journal, 2021 Entanglement assisted (EA) communication represents an interesting alternative to classical communication, in particular in low-brightness and highly noisy regime when it outperforms significantly corresponding classical counterpart in terms of the ...
Ivan Djordjevic
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Characterization of a 450-km Baseline GPS Carrier-Phase Link using an Optical Fiber Link [PDF]
, 2015 A GPS carrier-phase frequency transfer link along a baseline of 450 km has been established and is characterized by comparing it to a phase-stabilized optical fiber link of 920 km length, established between the two endpoints, the Max-Planck-Institut f ...
Bauch, Andreas +8 more
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Total Internal Reflection Lens for Optical Wireless Receivers
Photonics, 2022 This work considers the use of a freeform total internal reflection (TIR) lens for optical concentration and provides for the first time experimental results in the context of optical wireless communications (OWC). The lens is placed on a surface-mounted
René Kirrbach +5 more
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PPM demodulation: On approaching fundamental limits of optical communications
, 2010 We consider the problem of demodulating M-ary optical PPM (pulse-position modulation) waveforms, and propose a structured receiver whose mean probability of symbol error is smaller than all known receivers, and approaches the quantum limit.
Boroson DM +6 more
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Phase tracking for sub-shot-noise-limited receivers
Physical Review Research, 2020 Nonconventional receivers for phase-coherent states based on non-Gaussian measurements such as photon counting surpass the sensitivity limits of shot-noise-limited coherent receivers, the quantum noise limit (QNL). These non-Gaussian receivers can have a
M. T. DiMario, F. E. Becerra
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Characterization of submillimetre quasi-optical twin-slot double-junction SIS mixers [PDF]
, 1996 We report on the continuing development of submillimetre quasi-optical slot antenna SIS mixers, which use two-junction tuning circuits. Direct and heterodyne Fourier transform spectrometer measurements have been performed to compare device performance ...
Bin, M. +5 more
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Time-Controlled SPAD Receivers in Optical Wireless Communication System
IEEE Photonics Journal, 2023 Single-photon avalanche diodes (SPADs) capable of single photon detection are promising optical sensors for use as receivers in optical wireless communication (OWC) systems.
Junzhi Liu +3 more
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