The phase noise spectrum and structure of photons?

2010 ◽  
Author(s):  
Michael J Underhill
Keyword(s):  
Phase Noise ◽  
Noise Spectrum

Computation of Phase Noise Spectrum in Optoelectronic Oscillator

2021 ◽  
pp. 1-1
Author(s):  
Abhijit Banerjee ◽  
Larissa Aguiar Dantas de Britto ◽  
Gefeson Mendes Pacheco
Keyword(s):  
Phase Noise ◽  
Noise Spectrum ◽  
Optoelectronic Oscillator

scholarly journals Joint Effect of Heterogeneous Intrinsic Noise Sources on Instability of MEMS Resonators

2016 ◽  
Vol 19 (2) ◽  
pp. 59
Author(s):  
Olga Jakšić ◽  
Ivana Jokić ◽  
Miloš Frantlović ◽  
Danijela Randjelović ◽  
Dragan Tanasković ◽  
...  
Keyword(s):  
Phase Noise ◽  
Noise Analysis ◽  
Intrinsic Noise ◽  
Noise Spectrum ◽  
Joint Effect ◽  
Noise Sources ◽  
Mems Resonators ◽  
Micro Resonator ◽  
Micro Cantilever ◽  
Nyquist Noise

This article's focus is on the numerical estimation of the overall instability of microelectromechanical-system-based (MEMS) resonators, caused by intrinsic noise mechanisms that are different in nature (electrical, mechanical or chemical). Heterogeneous intrinsic noise sources in MEMS resonators that have been addressed here are Johnson–Nyquist noise, 1/f noise, noise caused by temperature fluctuations and adsorptiondesorption induced noise. Their models are given first (based on analytical modeling or based on empirical expressions with experimentally obtained parameters). Then it is shown how each one contributes to the phase noise, a unique figure of merit of resonators instability. Material dependent constants  and knee position in noise spectrum, needed for empirical formulae referring to 1/f noise, have been obtained experimentally, by measurements of noise of MEMS components produced in the Centre of Microelectronic Technologies of the Institute of Chemistry, Technology and Metallurgy in Belgrade. According to these measurements,  varies in the range from 0.776.10-4 to 2.26.10-4 and cut off frequency for 1/f noise varies from 147 Hz to 1 kHz. The determined values are then used for the modeling of micro-resonator phase noise with electrical origin and overall phase noise of a micro-resonator. Numerical example for calculation of overall phase noise is given for a micro-cantilever, produced by the same technology as measured components. The outlined noise analysis can be easily extended and applied to noise analysis of MEMS resonator of an arbitrary shape.

scholarly journals A Refinement of the Square Wave Phase Noise Evaluation

2018 ◽  
Vol 8 (1) ◽  
pp. 2361-2366
Author(s):  
L. Lubich
Keyword(s):  
Phase Noise ◽  
Noise Spectrum ◽  
Noise Power ◽  
Square Wave ◽  
Frequency Dividers ◽  
Power Spectral ◽  
Power Spectral Densities ◽  
Noise Evaluation ◽  
Oscillator Phase Noise ◽  
Oscillator Phase

Oscillators are often followed by square wave forming circuits and frequency dividers. Traditionally, the level of the phase noise, transferred from the oscillator outputs to the square waves obtained is calculated ignoring the correlations in the oscillator phase noise spectrum. In this paper, accurate expressions are derived, taking into account the phase noise mechanisms in the oscillators. The phase noise power spectral densities are calculated in both the traditional way and by using the proposed expressions and they are compared. The situations where the proposed expressions can be useful are identified.

Study of the phase noise spectrum in RF injection-locked single-loop optoelectronic oscillators

2021 ◽  
Vol 54 (1) ◽  
Author(s):  
Abhijit Banerjee ◽  
Larissa Aguiar Dantas de Britto ◽  
Gefeson Mendes Pacheco
Keyword(s):  
Phase Noise ◽  
Noise Spectrum ◽  
Single Loop ◽  
Optoelectronic Oscillators

Phase Noise Spectrum and Carrier Power Modeling of High Performance Optomechanical Oscillators

CLEO: 2013 ◽  
2013 ◽  
Author(s):  
Alejandro J. Grine ◽  
Karen E. Grutter ◽  
Tristan O. Rocheleau ◽  
Niels Quack ◽  
Turker Beyazoglu ◽  
...  
Keyword(s):  
Phase Noise ◽  
High Performance ◽  
Noise Spectrum ◽  
Power Modeling
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