Results 221 to 230 of about 299,353 (257)
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Raman fiber distributed feedback lasers
Optics Letters, 2011We demonstrate fiber distributed feedback (DFB) lasers using Raman gain in two germanosilicate fibers. Our DFB cavities were 124 mm uniform fiber Bragg gratings with a π phase shift offset from the grating center. Our pump was at 1480 nm and the DFB lasers operated on a single longitudinal mode near 1584 nm.
Paul S, Westbrook +4 more
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A note on the asymptotics of distributed detection with feedback
IEEE Transactions on Information Theory, 1993Summary: The effect of feedback on the performance of a distributed Neyman-Pearson detection system consisting of \(n\) sensors, two-stage local quantizers, and a global detector is investigated. Two feedback schemes are discussed, only one of which yields an asymptotic gain in performance, as measured by an appropriate error exponent.
Hossam M. H. Shalaby, Adrian Papamarcou
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CSI Feedback for Distributed MIMO
2022 IEEE Wireless Communications and Networking Conference (WCNC), 2022Gilwon Lee +2 more
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Distributed binary hypothesis testing with feedback
IEEE Transactions on Systems, Man, and Cybernetics, 1995The problem of binary hypothesis testing is revisited in the context of distributed detection with feedback. Two basic distributed structures with decision feedback are considered. The first structure is the fusion center network, with decision feedback connections from the fusion center element to each one of the subordinate decisionmakers. The second
Dimitrios A. Pados +3 more
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STATE FEEDBACK FOR DISTRIBUTED CONTROL SYSTEMS
IFAC Proceedings Volumes, 1982Abstract This paper describes a new approach in using an industrial distributed control system. A monovariable or multivariable plant is controlled through a state feedback algorithm without any modification of the original DCS, and operators can keep their conventional way of running the equipment : display of reference values and valve positions ...
J.P. Mérisse, J.A. Videau
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Picosecond distributed feedback dye lasers
IEEE Journal of Quantum Electronics, 1986The distributed feedback dye laser is a source of single picosecond pulses tunable in a very wide wavelength range. Operational principles, experimental arrangements, and recent applications are reviewed in this paper.
Bor, Z., Müller, A.
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Gain saturation in distributed feedback lasers
Applied Optics, 1975An approximate method is presented for the analysis of overcoupled distributed feedback lasers. A closed form expression is obtained for the power emitted by a laser normalized to the saturation power in terms of the loss coefficient alpha(L), small signal gain coefficient alpha(0), coupling parameter kappa, and length of the laser L.
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A Smooth Distributed Feedback for Formation Control of Unicycles
IEEE Transactions on Automatic Control, 2017This paper investigates a formation control problem in which a group of kinematic unicycles is made to converge to a desired formation with parallel heading angles and come to a stop. A control law is presented, which solves this problem for almost all initial conditions in any given compact set.
Ashton Roza +2 more
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IEE Proceedings - Optoelectronics, 1997
DFB lasers with axially distributed phase shifts implemented by distributed feedback (DFB) gratings with axially varied pitch lengths (chirped DFB gratings) have been investigated. It is shown that distributed phase shifts can be used to counteract spatial hole burning and reduce the inhomogeneity of the axial photon-density distribution.
Hillmer, Hartmut +2 more
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DFB lasers with axially distributed phase shifts implemented by distributed feedback (DFB) gratings with axially varied pitch lengths (chirped DFB gratings) have been investigated. It is shown that distributed phase shifts can be used to counteract spatial hole burning and reduce the inhomogeneity of the axial photon-density distribution.
Hillmer, Hartmut +2 more
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On the modal control of distributed systems with distributed feedback
IEEE Transactions on Automatic Control, 1966This paper presents a solution to the problem of the control of a class of linear distributed systems. The system is described by a linear operator acting on functions of time and distance. It is shown that if the operator separates in time and distance and the distance operator has a real discrete spectrum (self-adjoint and completely continuous), the
L. Gould, M. Murray-Lasso
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