Topic
Polarization mode dispersion
About: Polarization mode dispersion is a research topic. Over the lifetime, 5147 publications have been published within this topic receiving 80055 citations. The topic is also known as: PMD.
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Patent•
21 Jan 1997TL;DR: In this article, the authors proposed a spin function that takes advantage of certain resonances in energy transfer between polarization modes to achieve substantial reductions in PMD for a wide range of beat lengths.
Abstract: The invention provides improved methods for reducing polarization mode dispersion (PMD) in single mode fiber by spinning the fiber during the drawing process in accordance with a spin function having sufficient harmonic content to achieve low levels of PMD for commercial fibers for which the beat lengths of the fibers, including the beat lengths of different portions of the fibers, are variable and thus not readily known in advance. The spin functions of the invention take advantage of certain resonances in energy transfer between polarization modes to achieve substantial reductions in PMD for a wide range of beat lengths. Examples of suitable spin functions include frequency-modulated and amplitude-modulated sine waves.
44 citations
TL;DR: In this article, the effect of temperature change on chromatic dispersion was analyzed in terms of the eye opening penalty and it was shown that for systems operating at 40 Gbit/s and above temperature effects have to be considered in system design.
44 citations
TL;DR: In this paper, an analytical approximation for the dispersion management (pulse propagation in periodically modulated nonlinear optical fibers with piecewise constant dispersion) is developed based on the Gaussian ansatz.
44 citations
25 Jan 1988
TL;DR: Experimental results are presented and the model is extended to show that the second-order effect of polarization dispersion on pulse propagation is an effective chromatic dispersion having opposite signs for the two principal states.
Abstract: Random polarization mode coupling makes modeling the effects of polarization dispersion in long fibers difficult. In a recent paper,1 an approach to this problem was presented in which the first-order effects of polarization dispersion for spectrally narrow sources were considered to arise through a difference in the time of flight for waves launched in two orthogonal principal states. We present experimental results in support of this model and also extend the model to show that the second-order effect of polarization dispersion on pulse propagation is an effective chromatic dispersion having opposite signs for the two principal states. This latter effect is demonstrated in dispersion-shifted fiber by the compression of frequency chirped pulses in one principal state and commensurate broadening in the orthogonal principal state.
44 citations
Patent•
26 Sep 1991TL;DR: In this article, a spatial mode converter is proposed to exchange the optical energy from one propagating spatial mode to another spatial mode whose propagation is supported by the multimode or dual-mode fiber.
Abstract: Chromatic dispersion is efficiently compensated in a compact device by combining a spatial mode converter with a dispersive waveguide having a dispersion characteristic of substantially equivalent magnitude, and opposite sign, to the desired amount of dispersion to be compensated. The spatial mode converter exchange the optical energy from one propagating spatial mode to another spatial mode whose propagation is supported by the multimode or dual-mode fiber. This apparatus is applicable to lightwave repeaters, regenerators, transmitters, and receivers.
44 citations