Large signal-to-noise-ratio enhancement of ultrashort pulsed optical signals using a power-symmetric Nonlinear Optical Loop Mirror with output polarisation selection

2009 ◽  
Vol 15 (2) ◽  
pp. 172-180 ◽  
Author(s):  
O. Pottiez ◽  
B. Ibarra-Escamilla ◽  
E.A. Kuzin
Keyword(s):  
Nonlinear Optical ◽  
Signal To Noise Ratio ◽  
Large Signal ◽  
Signal To Noise ◽  
Optical Signals ◽  
Nonlinear Optical Loop Mirror ◽  
Noise Ratio ◽  
Loop Mirror

Signal-to-noise ratio analysis of 100 Gb/s demultiplexing using nonlinear optical loop mirror

1997 ◽  
Vol 15 (2) ◽  
pp. 194-201 ◽  
Author(s):  
K. Uchiyama ◽  
T. Morioka ◽  
S. Kawanishi ◽  
H. Takara ◽  
M. Saruwatari
Keyword(s):  
Nonlinear Optical ◽  
Signal To Noise Ratio ◽  
Ratio Analysis ◽  
Signal To Noise ◽  
Nonlinear Optical Loop Mirror ◽  
Noise Ratio ◽  
Loop Mirror

Gravity meter observation of free modes excited by the August 19, 1977 Indonesia earthquake

1979 ◽  
Vol 69 (5) ◽  
pp. 1445-1454
Author(s):  
John A. Linton ◽  
D. E. Smylie ◽  
O. G. Jensen
Keyword(s):  
Signal To Noise Ratio ◽  
Quartz Fiber ◽  
Large Signal ◽  
Signal To Noise ◽  
Definitive Evidence ◽  
Long Period ◽  
Noise Ratio

abstract Free modes with signal-to-noise ratio in the range of 40 to 55 dB were observed in the record taken by a vertical broadband quartz fiber gravimeter system opeating in Montreal following the event of August 19, 1977 in Indonesia. The large signal-to-noise ratio has permitted very stable Q estimates to be made for a number of the fundamental spheroidal modes. The very long-period band shows no definitive evidence of signal other than the expected tidal lines.

Metastable yield of argon between 23 and 37 eV by electron impact

1979 ◽  
Vol 57 (10) ◽  
pp. 1624-1633 ◽  
Author(s):  
P. Marchand ◽  
J. Cardinal
Keyword(s):  
Electron Impact ◽  
Excited States ◽  
Signal To Noise Ratio ◽  
Negative Ion ◽  
Photon Yield ◽  
Large Signal ◽  
Signal To Noise ◽  
Monoenergetic Electron ◽  
Yield Curves ◽  
Noise Ratio

The metastable yield of argon excited by monoenergetic electron impact has been measured between 23 and 37 eV. Thanks to a large signal-to-noise ratio, many very small structures have been detected superimposed on the metastable continuum and are attributed to Ar− negative-ion states and to highly excited states of Ar. The results are compared with broadband photon yield curves and electroionization curves.

Non-linear filtering of rare events with large signal-to-noise ratio

1987 ◽  
Vol 24 (04) ◽  
pp. 929-948
Author(s):  
A. J. Heunis
Keyword(s):  
Conditional Distribution ◽  
Signal To Noise Ratio ◽  
Sample Path ◽  
Rare Event ◽  
Dirac Measure ◽  
Linear Filtering ◽  
Large Signal ◽  
Signal To Noise ◽  
Non Linear ◽  
Noise Ratio

The theory of robust non-linear filtering in Clark (1978) and Davis (1980), (1982) is used to evaluate the limiting conditional distribution of a diffusion, given an observation of a ‘rare-event' sample-path of the diffusion, as the signal-to-noise ratio and the diffusion noise-intensity converge to infinity and zero respectively. Under mild conditions it is shown that the limiting conditional distribution is a Dirac measure concentrated at a trajectory which solves a variational problem parametrised by the sample-path of the observed signal.

ON THE DISTRIBUTION OF THE PRODUCT OF DIODE DETECTOR WAVEFORMS

1956 ◽  
Vol 34 (7) ◽  
pp. 679-691 ◽  
Author(s):  
E. L. R. Webb
Keyword(s):  
Probability Distribution ◽  
Signal To Noise Ratio ◽  
Rayleigh Distribution ◽  
Large Signal ◽  
Signal To Noise ◽  
Radio Receivers ◽  
Impulse Function ◽  
Diode Detector ◽  
Mean And Variance ◽  
Noise Ratio

The probability distribution of the product of two waveforms such as come from the diode second detectors of radio receivers is examined over the whole range of signal to noise ratios. Computed curves of probability density are given for small and moderate values of signal to noise ratio and the limiting form for large signal to noise indicated. The pure noise case is the only one immediately available in terms of tabulated functions. Compared to the Rayleigh distribution it rises much faster, reaches its maximum sooner and lower, and decays much more slowly. The very large signal to noise ratio case approaches an impulse function. Estimates of mean and variance are given.

Local symmetric distortion boosted photon up-conversion and thermometric sensitivity in lanthanum oxide nanospheres

Nanoscale ◽  
2018 ◽  
Vol 10 (19) ◽  
pp. 9245-9251 ◽  
Author(s):  
Hao Suo ◽  
Xiaoqi Zhao ◽  
Zhiyu Zhang ◽  
Rui Shi ◽  
Yanfang Wu ◽  
...  
Keyword(s):  
Lanthanum Oxide ◽  
Signal To Noise Ratio ◽  
Site Symmetry ◽  
Large Signal ◽  
Signal To Noise ◽  
Local Site ◽  
Noise Ratio

Realizing sensitive sub-tissue thermometry with a large signal-to-noise ratio via finely tailoring the local site symmetry in La2O3:Er3+/Yb3+ nanospheres.

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