Results 11 to 20 of about 3,274,533 (303)
Coherent detection spectroscopy [PDF]
Physica, 1969 Various methods of optical spectroscopy are compared, with special emphasis on resolution and acceptance of the systems. It is shown that coherent detection with a laser as a local oscillator has important advantages for specific applications in astronomical spectroscopy and interferometry, especially in the infrared.
Bueren, H.G. van
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Study on external cavity diode laser with a wide mode-hopping free tuning range
Frontiers in Physics, 2022 A wide mode-hopping free and narrow linewidth tunable laser diode source with a Littman-Metcalf arrangement based on a diffraction grating is presented. Several experiments are carried out to demonstrate the tuning characteristics and spectral linewidth ...
Aiguo Zhang +15 more
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A Compensation Method for Nonlinearity Errors in Optical Interferometry
Sensors, 2023 Optical coherent detection is widely used for highly sensitive sensing applications, but nonlinearity issues pose challenges in accurately interpreting the system outputs.
Yanlu Li, Emiel Dieussaert
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IEEE Access, 2023 Among various multi-wave imaging methods, the photoacoustic imaging (PAI) has attracted more attention because it can achieve higher resolution and contrast through combining advantages of light excitation and ultrasound detection.
Chuanshi Yang +5 more
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Detecting and estimating coherence based on coherence witnesses [PDF]
Physical Review A, 2021 Quantum coherence has wide-ranging applications from quantum thermodynamics to quantum metrology, quantum channel discrimination and even quantum biology. Thus, detecting and quantifying coherence are two fundamental problems in quantum resource theory.
Zhao Ma +4 more
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Asymmetric self-coherent detection
Optics Express, 2021 The bandwidth upgrade required in short-reach optical communications has prompted the need for detection schemes that combine field reconstruction with a cost-effective subsystem architecture. Here we propose an asymmetric self-coherent detection (ASCD) scheme for the field reconstruction of self-coherent (SC) complex double-sideband (DSB) signals ...
Xueyang Li +5 more
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CPFSK Signal Detection in White and Bursty Impulsive Noises
IEEE Access, 2019 Designing communication techniques for non-Gaussian impulsive noise has been attracting considerable attention from the research community. In this paper, we focus on the continuous phase frequency shift keying (CPFSK) signal detection for both white and
Guosheng Yang +4 more
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Coherent scatterers detection: application over glacier terrain using TerraSAR-X time series data [PDF]
, 2011 This paper investigates the detection of Coherent Scatterers (CSs) in ice and glacier terrain by means of TerraSAR-X time series data in the test site of the Helheim Glacier in Greenland.
Maria J. Sanjuan-Ferrer +5 more
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Homodyne coherent detection of ASK and PSK signals performed by a subcarrier optical phase-locked loop [PDF]
, 2005 Optical transmission systems based on homodyne coherent detection of 2-ASK and pilot carrier 2-PSK signals have been implemented. ASK data has been transmitted at 2.5 Gbps, while 2.5 Gbps and 10 Gbps PSK systems have been tested.
S. Camatel +4 more
core +2 more sources
IEEE Photonics Journal, 2018 Digital coherent receivers employing Alamouti-coding are a promising solution for passive optical networks (PON) with downstream rates of 100 Gb/s/$\lambda$ . To reduce the cost by utilizing high-volume photodiodes designed for 25 Gb/s data-
Md. Saifuddin Faruk +2 more
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