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Instabilities and Chaos in TV-optical feedback
Topical Meeting on Optical Bistability, 1983The simplest TV-optical feedback experiment is performed by a TV-camera looking onto its own monitor. If we introduce some signal processing into the system as convolutions, image subtraction, non1inearites, etc., there are many applications: in a first approximation we assumed linear systems and we obtained systems for image restoration, iterative ...
G. Häusler, N. Streibl
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Usability of optically simulated haptic feedback
International Journal of Human-Computer Studies, 2008In this contribution a method will be described to optically simulate haptic feedback without resorting to mechanical force feedback devices. This method exploits the domination of the visual over the haptic modality. The perception of haptic feedback, usually generated by force feedback devices, was simulated by tiny displacements on the cursor ...
Mensvoort, van, K.M. +2 more
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Laser feedback metrology of optical systems
Applied Optics, 1989A simple interferometric metrology instrument based on the effect of weak optical feedback on the power output of laser diodes is described. Laboratory demonstrations of the principle applied to the analysis of wavefront aberrations in optical systems is reported.
P, de Groot +3 more
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Applied Optics, 2007
Optical feedback effects are studied in a birefringence-Zeeman dual frequency laser at high optical feedback levels. The intensity modulation features of the two orthogonally polarized lights are investigated in both isotropic optical feedback (IOF) and polarized optical feedback (POF). In IOF, the intensities of both beams are modulated simultaneously,
Wei, Mao, Shulian, Zhang
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Optical feedback effects are studied in a birefringence-Zeeman dual frequency laser at high optical feedback levels. The intensity modulation features of the two orthogonally polarized lights are investigated in both isotropic optical feedback (IOF) and polarized optical feedback (POF). In IOF, the intensities of both beams are modulated simultaneously,
Wei, Mao, Shulian, Zhang
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Feedback on the Motion of a Single Atom in an Optical Cavity
Physical Review Letters, 2002We demonstrate feedback on the motion of a single neutral atom trapped in the light field of a high-finesse cavity. Information on the atomic motion is obtained from the transmittance of the cavity. This is used to implement a feedback loop in analog electronics that influences the atom's motion by controlling the optical dipole force exerted by the ...
Fischer, T. +4 more
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Optical Engineering, 1980
"Hybrid" TV optical systems seem to be useful for the translation of electronic feedback concepts into optics. They enable us to achieve active feedback and to simulate temporally varying two-dimensional (x,y)-processes. We report three optical counterparts of electronic feedback applications: the operational amplifier, the analog computer and the flip-
G. Ferrano, G. Hausler
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"Hybrid" TV optical systems seem to be useful for the translation of electronic feedback concepts into optics. They enable us to achieve active feedback and to simulate temporally varying two-dimensional (x,y)-processes. We report three optical counterparts of electronic feedback applications: the operational amplifier, the analog computer and the flip-
G. Ferrano, G. Hausler
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Optical Feedback Interferometry
2006This chapter presents an overview of the self-mixing effect in lasers for sensing purposes. The basic theory of the self-mixing effect is presented for a weak feedback. The influence of a moderate and a strong feedback are then discussed before examining some specific cases: • multiple optical feedback due to an asymmetric external cavity • multiple ...
Bosch, Thierry +3 more
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Optical Feedback For Iterative Processing
SPIE Proceedings, 1988Iterative processing techniques can often provide useful solutions to problems, especially problems of inversion, when deterministic solutions are impracticable or too costly. These iterative techniques usually require a feedback path so some measure of the output can affect an input of the system in order to guide it towards the correct solution. This
Anthony J. Ticknor, Harrison H. Barrett
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Phase Estimators with Predetection Feedback for Optical Communication
IEEE Transactions on Communications, 1976Causal, minimum mean-square error (MMSE) estimators of a Gauss-Markov process observed through a conditional Poisson process whose rate parameter is a linear function of the estimation error are presented. Although the conditional estimation performance is data dependent, precomputable upper bounds on the average estimation performance are obtained ...
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A class of optical receivers using optical feedback.
1976Thesis. 1976. Ph.D.--Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science. ; Microfiche copy available in Archives and Engineering. ; Vita. ; Includes bibliographical references. ; by Samuel Joseph Dolinar, Jr. ; Ph.D.
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