Results 41 to 50 of about 1,683,790 (202)
Passive Phase Noise Cancellation Scheme [PDF]
Physical Review Letters, 2012 We introduce a new method for reducing phase noise in oscillators, thereby improving their frequency precision. The noise reduction is realized by a passive device consisting of a pair of coupled nonlinear resonating elements that are driven parametrically by the output of a conventional oscillator at a frequency close to the sum of the linear mode ...
Kenig, Eyal +6 more
openaire +3 more sources
Phase Noise Influence in a Dual-Frequency Laser Phase-Shift Range Finder
IEEE Photonics Journal, 2018 The influence of phase noise in a dual-frequency laser phase-shift range finder is theoretically and experimentally investigated. The proposed range finder is based on the use of a coherent dual-frequency laser and direct detection of the backscattered ...
Hongzhi Yang +4 more
doaj +1 more source
PHASE AND FREQUENCY NOISE METROLOGY [PDF]
Frequency Standards and Metrology, 2009 As a consequence of a general trend in the physics of oscillators and clocks towards optics, phase and frequency metrology is rapidly moving to optics too. Yet, optics is not replacing the traditional radio-frequency (RF) and microwave domains. Instead, it adds tough challenges.
Rubiola, Enrico +3 more
openaire +2 more sources
Applied Sciences, 2018 Digital holography is a well-established technology for optical quality control in industrial applications. Two common challenges in digital holographic measurement tasks are the ambiguity at phase steps and the limited depth of focus.
Tobias Seyler +5 more
doaj +1 more source
Quantum-enhanced phase estimation using optical spin squeezing [PDF]
, 2016 Quantum metrology enables estimation of optical phase shifts with precision beyond the shot-noise limit. One way to exceed this limit is to use squeezed states, where the quantum noise of one observable is reduced at the expense of increased quantum ...
Cable, Hugo +4 more
core +3 more sources
A Comprehensive Experimental Emulation for OTFS Waveform RF-Impairments
Sensors, 2022 The orthogonal time-frequency space (OTFS) waveform exceeds the challenges that face orthogonal frequency division multiplexing (OFDM) in a high-mobility environment with high time-frequency dispersive channels.
Abdelrahman Abushattal +3 more
doaj +1 more source
Intrinsic noise-induced phase transitions: Beyond the noise interpretation [PDF]
Physical Review E, 2003 We discuss intrinsic noise effects in stochastic multiplicative-noise partial differential equations, which are qualitatively independent of the noise interpretation (Ito vs. Stratonovich), in particular in the context of noise-induced ordering phase transitions.
Carrillo, O. +4 more
openaire +4 more sources
Influence of phase noise and interchannel interference on the performance of optical heterodyne FSK receiver [PDF]
Serbian Journal of Electrical Engineering, 2003 The moments approach is generally considered a systematic way to perform the analysis of coherent optical systems. Exact moments of the filtered signal corrupted by phase noise enable the construction of the Gaussian quadrature rule, which may be used to
Stefanović Mihajlo, Milić D.
doaj +1 more source
, 2003 The characteristic function of soliton phase jitter is found analytically when the soliton is perturbed by amplifier noise. In additional to that from amplitude jitter, the nonlinear phase noise due to frequency and timing jitter is also analyzed ...
Bissessur +30 more
core +1 more source
Performance of DPSK Signals with Quadratic Phase Noise
, 2004 Nonlinear phase noise induced by the interaction of fiber Kerr effect and amplifier noises is a quadratic function of the electric field. When the dependence between the additive Gaussian noise and the quadratic phase noise is taking into account, the ...
Ho, Keang-Po
core +2 more sources