Results 31 to 40 of about 127,186 (271)

Composite pulses for high-fidelity population inversion in optically dense, inhomogeneously broadened atomic ensembles [PDF]

open access: yes, 2016
We derive composite pulse sequences that achieve high-fidelity excitation of two-state systems in an optically dense, inhomogeneously broadened ensemble.
Demeter, Gabor
core   +2 more sources

Generation and Transmission of High Symbol Rate Single Carrier Electronically Time-Division Multiplexing Signals

open access: yesIEEE Photonics Journal, 2016
We experimentally investigate the generation and transmission of high-symbol-rate single-carrier signals based on the electronically time-division multiplexing (ETDM) method.
Junwen Zhang, Jianjun Yu
doaj   +1 more source

Structured Optical Receivers for Efficient Deep-Space Communication

open access: yes, 2017
We discuss conceptual designs for structured optical receivers that can alleviate the requirement for high peak-to-average power ratio in photon-starved optical communication.
Banaszek, Konrad, Jachura, Michał
core   +1 more source

Electrically driven optical interferometry with spins in silicon carbide [PDF]

open access: yes, 2019
Interfacing solid-state defect electron spins to other quantum systems is an ongoing challenge. The ground-state spin's weak coupling to its environment bestows excellent coherence properties, but also limits desired drive fields.
Abe, Hiroshi   +13 more
core   +2 more sources

Phase conjugation of twisted Gaussian Schell model beams in stimulated down-conversion

open access: yesNanophotonics, 2021
Stimulated parametric down-conversion is a nonlinear optical process that can be used for phase conjugation and frequency conversion of an optical field.
dos Santos Gustavo H.   +8 more
doaj   +1 more source

Identification and tunable optical coherent control of transition-metal spins in silicon carbide [PDF]

open access: yes, 2018
Color centers in wide-bandgap semiconductors are attractive systems for quantum technologies since they can combine long-coherent electronic spin and bright optical properties.
Bosma, Tom   +11 more
core   +5 more sources

Coherent optical sources for communications [PDF]

open access: yesProceedings of the IEEE, 1970
The development of coherent optical sources, producing usable amounts of power, has provided a stimulus for communications research. Coherent sources in the form of lasers and parametric oscillators are available at wavelengths which span the entire optical spectrum.
Geusic, Joseph E.   +2 more
openaire   +2 more sources

Volterra-assisted Optical Phase Conjugation: a Hybrid Optical-Digital Scheme For Fiber Nonlinearity Compensation [PDF]

open access: yes, 2018
Mitigation of optical fiber nonlinearity is an active research field in the area of optical communications, due to the resulting marked improvement in transmission performance.
Bayvel, Polina   +2 more
core   +2 more sources

Remote Monitoring in Myasthenia Gravis: Exploring Symptom Variability

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Myasthenia gravis (MG) is a rare, autoimmune disorder characterized by fluctuating muscle weakness and potential life‐threatening crises. While continuous specialized care is essential, access barriers often delay timely interventions. To address this, we developed MyaLink, a telemedical platform for MG patients.
Maike Stein   +13 more
wiley   +1 more source

Coherent Optical OFDM With Index Modulation for Long-Haul Transmission in Optical Communication Systems

open access: yesIEEE Access, 2022
In this paper, it is proposed to enhance coherent optical orthogonal frequency-division multiplexing (OFDM) system by using index modulation in terms of bit error rate (BER) and spectral efficiency for different levels of the fiber nonlinearity.
Ahmet Guner
doaj   +1 more source

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