Optical signal to noise ratio monitoring using single channel sampling technique

Performance Monitoring of Optical Network using Optical Signal to Noise Ratio

-The high quality signal demands at user end and introduction of impairments due to increased network capacity and data rates made it essential to monitor quality of signal at different points while it travels from source to destination. One of the important parameter to quantize the signal quality is OSNR. In the proposed work effect of Power, Bit Rate, Noise Figure and Signal Gain on OSNR of ...

Single-image signal-to-noise ratio estimation.

A method for estimating the signal-to-noise ratio from a single image is presented in this paper. The autocorrelation-based technique requires that image details be correlated over distances of a few pixels, while the noise is assumed to be uncorrelated from pixel to pixel. The latter is shown to be a good approximation in the case of scanning electron microscope (SEM) images provided that the ...

Improvement of signal to noise ratio in electro optical probing technique by wavelets filtering

Article history: Received 29 May 2015 Received in revised form 17 June 2015 Accepted 18 June 2015 Available online xxxx

Optical signal - to - noise ratio monitoring with gain and frequency conversion

Computational signal-to-noise ratio analysis for optical quadrature microscopy.

Optical quadrature microscopy (OQM) was invented in 1997 to reconstruct a full-field image of quantitative phase, and has been used to count the number of cells in live mouse embryos. Here we present a thorough SNR analysis that incorporates noise terms for fluctuations in the laser, aberrations within the individual paths of the Mach-Zehnder interferometer, and imperfections within the beamspl...