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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.


Papers
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Proceedings ArticleDOI
28 Nov 1983
TL;DR: In this paper, the dispersion of electrical pulses propagating along microstrip transmission lines was investigated and the effects of pulse sharpening by dispersion for initially asymmetric pulses were investigated.
Abstract: Calculations are made showing the dispersion of electrical pulses of a few picoseconds duration when propagating along microstrip transmission lines. The dispersion is primarily due to the geometrical factors affecting the quasi-TEM mode although material properties also contribute. Especially interesting are effects of pulse sharpening by dispersion for initially asymmetric pulses.© (1983) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

22 citations

Journal ArticleDOI
TL;DR: This paper proposes a novel parallel digital timing recovery loop (PDTRL) and embeds a parallel adaptive equalizer in the PDTRL that can be used to complete synchronization, equalization and polarization de-multiplexing simultaneously.
Abstract: The digital coherent receivers combine coherent detection with digital signal processing (DSP) to compensate for transmission impairments, and therefore are a promising candidate for future high-speed optical transmission system. However, the maximum symbol rate supported by such real-time receivers is limited by the processing rate of hardware. In order to cope with this difficulty, the parallel processing algorithms is imperative. In this paper, we propose a novel parallel digital timing recovery loop (PDTRL) based on our previous work. Furthermore, for increasing the dynamic dispersion tolerance range of receivers, we embed a parallel adaptive equalizer in the PDTRL. This parallel joint scheme (PJS) can be used to complete synchronization, equalization and polarization de-multiplexing simultaneously. Finally, we demonstrate that PDTRL and PJS allow the hardware to process 112G bit/s POLMUX-DQPSK signal at the hundreds MHz range.

22 citations

Patent
30 Nov 2000
TL;DR: In this article, the authors propose a mechanism for compensating the polarization dispersion suffered by an optical signal when it is transmitted by an orthogonal optical line by generating a differential time delay between two orthogonality modes and controlling the controller so that it converts the signal transmitted by the line into a compensated optical signal.
Abstract: A device for compensating the polarization dispersion suffered by an optical signal when it is transmitted by an optical line includes a polarization controller. It generates a differential time delay between two orthogonal polarization modes and controls the polarization controller so that it converts the signal transmitted by the line into a compensated optical signal. If the quality of the compensated optical signal remains below a reference quality the device modifies the state of polarization of the optical signal. Applications include long distance optical transmission via standard fibers.

22 citations

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the behavior of the first and second-order polarization mode dispersion of randomly birefringent fibers and provided analytical expressions for the asymptotic statistical properties of PMD.
Abstract: Polarization-mode dispersion (PMD) causes significant impairment for high bit-rate optical telecommunications systems. It is known that PMD can be strongly reduced by spinning the fiber as it is drawn. In this paper, we focus on the case of randomly birefringent fibers spun at a constant rate, providing analytical expressions for the asymptotic statistical properties of PMD. In particular, we investigate the behavior of the first- and second-order PMD, demonstrating that a constantly spun fiber behaves asymptotically as an unspun fiber. Conversely, we show that the distance at which the PMD reaches its asymptotic trend increases with the spin rate up to lengths of several kilometers.

22 citations

Journal ArticleDOI
TL;DR: In this paper, the authors provide a theoretical framework for distributed measurement of cumulative PMD along single-mode optical fiber links, where independent pairs of optical pulses are launched into the fiber, where each pair consists of two pulses having the same state of polarization (SOP) but two different, closely spaced wavelengths.
Abstract: We provide the theoretical framework for a new method of distributed measurement of cumulative PMD along single-mode optical fiber links. Independent pairs of optical pulses are launched into the fiber, where each pair consists of two pulses having the same state of polarization (SOP) but two different, closely spaced wavelengths. The key aspect is that both the SOP and center wavelength of a given pair need not be correlated with those of any other pair. This random-scrambling approach is well suited for an economically designed instrument that is more robust for field applications than previously reported approaches. Since no assumed model of the distributed birefringence behavior is required, the method is suitable for any actual single-mode telecom fiber span encompassing many fiber sections of different types and origins.

22 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202332
202275
202145
202069
201968
201868