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Optical signal-to-noise ratio monitoring based on four-wave mixing
Optical Engineering, 2015The transmission rates of the next generation intelligent optical networks are high, and the use of dense wavelength division multiplexing and a reconfigurable optical add-drop multiplexer makes the traditional optical signal-to-noise ratio (OSNR) monitoring techniques unsuitable. Hence, we investigated the OSNR monitoring method based on the nonlinear
Shanhong You +3 more
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Quantum memory based on optical subradiance: Optimization of the signal-to-noise ratio
Bulletin of the Russian Academy of Sciences: Physics, 2008A scheme for creating subradiant states in an extended system of atoms, based on the use of an external inhomogeneous electric field, is proposed. It is shown that the maximum signal-to-noise ratio at the output of a quantum memory device using such subradiant states for data storage is obtained when the temporal shape of recorded single-photon wave ...
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Optical Signal-to-Noise Ratio Estimation Using Reference Asynchronous Histograms
Journal of Lightwave Technology, 2009This paper presents and experimentally demonstrates a novel method for the estimation of optical signal-to-noise ratio (OSNR) based on the comparison of an asynchronous histogram of the signal under analysis with a reference asynchronous histogram. The latter is acquired from the signal under analysis at a calibration stage.
Ruben S. Luis +2 more
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Signal-to-noise ratio for magneto-optic readout from quadrilayer structures
Applied Physics Letters, 1983We present an experimental investigation of our earlier theoretical predictions regarding the signal-to-noise ratio for magneto-optic readout from quadrilayer structures in a differential detection scheme. Using quadrilayer structures employing amorphous Tb-Fe alloys as the magnetic material, quartz as the dielectric material, and aluminum as the ...
G. A. N. Connell +3 more
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Optical signal-to-noise ratio monitoring using uncorrelated beat noise
IEEE Photonics Technology Letters, 2005We propose and experimentally demonstrate a new technique for monitoring optical signal-to-noise ratio (OSNR). The noisy signal to be measured is split into two paths. With offset optical bandpass filters and balanced radio-frequency subtraction after detection, the signal is separated from the beat noise.
Xingwen Yi +4 more
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Anisoplanatism effects on signal-to-noise ratio performance of adaptive optical systems
Journal of the Optical Society of America A, 1995The effects of turbulence-induced anisoplanatism cause the performance of an adaptive-optics system to be dependent on the angular separation between the object wave front being corrected and the wave front of the reference source. One method of quantifying this angular-dependent performance is through the average optical transfer function (OTF).
Michael C. Roggemann +2 more
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Signal-to-Noise Ratio in Polarization Modulation Method for Magneto-Optical Measurement
Japanese Journal of Applied Physics, 1982The signal-to-shot-noise ratio (SNR) in the polarization modulation method using a photomultiplier for measuring a magneto-optic rotation angle \varPsi is calculated as a function or the modulation amplitude a 0, taking the magneto-optic ellipticity angle χ, the extinction ratio of the polarizer, and the partial polarization of the
Masanori Abe, Manabu Gomi, Keiji Shono
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Optimization of signal-to-noise ratio in integrated planar optical interconnects packages
Optics Communications, 2006The signal-to-noise ratio (SNR) of integrated planar optical (IPO) board-to-board interconnections system is analyzed. The SNR is derived as a function of separation between the boards, beam spot size, optical system efficiency, receiver thermal noise, thickness of the substrate, and the angle of propagation of the beam.
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Optical diffusion tomography signal-to-noise ratio expressions
Biomedical Topical Meeting, 2002Charles L. Matson, Hanli Liu
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Improving the signal-to-noise ratio of event-related optical signals
IEEE Engineering in Medicine and Biology Magazine, 2007Gabriele Gratton +3 more
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