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Optics Letters, 2008
We measure full interferograms of telecom signals impaired by noise and investigate their applicability to in-band optical signal-to-noise ratio (OSNR) monitoring in practical systems. We experimentally establish that the dependence of overall shape of the interferogram on a signal's extinction ratio (ER) is strong but not unique.
George H. Cadena +4 more
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We measure full interferograms of telecom signals impaired by noise and investigate their applicability to in-band optical signal-to-noise ratio (OSNR) monitoring in practical systems. We experimentally establish that the dependence of overall shape of the interferogram on a signal's extinction ratio (ER) is strong but not unique.
George H. Cadena +4 more
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Modal-noise-induced signal-to-noise ratios in optical fibers
Optical Fiber Communication, 1982Daino et al.1 assumed that the statistics of the modal noise in optical fibers are identical to the statistics of conventional speckle patterns.
Audun Weierholt +3 more
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Optical-signal-to-noise ratio monitoring for packet switched networks
31st European Conference on Optical Communications (ECOC 2005), 2005We present the first experimental demonstration of direct optical-signal-noise-ratio (OSNR) monitoring on the packet basis. The OSNR monitoring error is found to be 0.6 dB in a dynamic range from 10 dB to 30 dB. (2 pages)
Xingwen Yi, Wei Chen, William Shieh
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Broadband Coupler to Enhance Signal-to-Noise Ratio of Optical Coherence Tomography
Optical Sensors and Sensing Congress, 2020A tandem Mach-Zehnder directional coupler (MZDC) demonstrates maximally flat wavelength-insensitive optical power divider compared with directional coupler and MZDC. Its 100-nm wavelength response could enhance the signal-to-noise ratio of optical coherence tomography up to 24-dB.
Benedictus Yohanes Bagus Widhianto +2 more
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Controlling the signal-to-noise ratio in optical parametric image amplification
Journal of Optics B: Quantum and Semiclassical Optics, 2003We analyse a scheme for phase-sensitive amplification of an optical image without using Fourier-transforming lenses, as carried out in a recent experiment. Our analysis shows that the scheme works well with a broadband amplifier, which ensures that the output image is a faithful copy of the object.
Luigi A. Lugiato +3 more
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Free-space optical interconnect with improved signal-to-noise ratio
Proceedings 27th European Conference on Optical Communication (Cat. No.01TH8551), 2002In a microlens-based free-space optical interconnect, it is usually assumed that the arrangement of transmitters, microlenses and receivers in their respective arrays is "square". This paper shows that it is possible to improve the optical signal-to-noise ratio by up to 50% by slightly altering the array geometry.
Aleksandar D. Rakić +2 more
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Improvement of signal-to-noise ratio of a write-once optical disk
Conference on Lasers and Electro-Optics, 1986To improve the SNR of a plastic optical disk, on- land recording has been examined.1 By using on- land recording, additional advantages are confirmed, such as the decrease of crosstalk signal level from adjacent track and irrelavance of the groove depth to the signal level. The latter advantage makes groove depth optimization easy.
Y. Kanazawa +3 more
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Signal-to-noise Ratio of Optical System Consisting of Squeezer and Optical Kerr Medium
Journal of Modern Optics, 1994Abstract In this paper, we analyse the properties of a quantum state transformation system consisting of a squeezer and an optical Kerr medium. An average, a variance, and a signal-to-noise ratio (SNR) of a quadrature-phase amplitude are calculated analytically.
Tsuyoshi Satoh +3 more
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Uncorrelated beat noise measurement for optical signal-to-noise ratio monitoring
31st European Conference on Optical Communications (ECOC 2005), 2005We present theoretical analysis and experimental demonstration of a new optical signal-to-noise ratio monitoring method using uncorrelated beat noise. The measurement errors are less than 0.6 dB in a 10 Gb/s system. (2 pages)
Xingwen Yi +4 more
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Signal-to-noise ratio in optical matched filtering using a thermoplastic filter
Applied Optics, 1988Effet de la non linearite de l'enregistrement thermoplastique sur la realisation d'un filtre adapte ...
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