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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TL;DR: In this article, the authors report on stable soliton propagation experiments in a fiber transmission system consisting of more than 90% normal dispersion fiber, which has a dispersion map much like that used in non-return-to-zero (NRZ) pulse transmission but with a path-average anomalous dispersion of +0.1 ps/nm-km.
Abstract: We report on stable soliton propagation experiments in a fiber transmission system consisting of more than 90% normal dispersion fiber. The transmission system has a dispersion map much like that used in nonreturn-to-zero (NRZ) pulse transmission but with a path-average anomalous dispersion of +0.1 ps/nm-km. A stable soliton pulse train at 8 GHz has been observed after 28 Mm of propagation in a 108-km recirculating fiber-optic loop. A significant enhancement in the average soliton power required for stable transmission in a dispersion map with alternating signs of dispersion is experimentally demonstrated for the first time. Theoretical modeling of our experiment is in good agreement with our findings.
62 citations
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TL;DR: It is found that this fiber has mode coupling properties analogous to elliptical core PM fibers, which yield ~10 × or more lower crosstalk than for conventional LP fiber mode orders with the same Δneff, which confirms that, for OAM modes, birefringent perturbation rather than shape perturbations matter most.
Abstract: Enabled by an enhanced effective index separation (Δneff = 1.7 × 10-4) and low transmission loss (0.8dB/km), OAM states are propagated over 13.4km in an air core fiber using a recirculating fiber loop. We observe that intermodal crosstalk decreases rapidly with increasing effective index separation, Δneff, and an order of magnitude lower crosstalk may be achieved just by doubling Δneff. We find that, in agreement with coupled power theory, our fiber has mode coupling properties analogous to elliptical core PM fibers, which yield ~10 × or more lower crosstalk than for conventional LP fiber mode orders with the same Δneff. This confirms that, for OAM modes, birefringent perturbations rather than shape perturbations matter most. In the process of performing the loop experiment, we demonstrate that OAM states in these fibers can be preserved with low loss (≤ 0.2dB) and low crosstalk (-15dB) while splicing distinct segments of the air-core fiber. For well-designed fibers, we demonstrate that OAM modes can travel distances relevant for large-scale data centers.
62 citations
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TL;DR: Experimental results are reported that show good agreement with the underlying theory based on stochastic differential equations of birefringence correlation length performed on long single-mode telecommunication fibers.
Abstract: Measurements of birefringence correlation length performed on long single-mode telecommunication fibers are reported. The proposed technique relies on the statistical properties of the backscattered-field polarization, which was measured by means of a polarization-sensitive optical time-domain reflectometer. Experimental results are reported that show good agreement with the underlying theory based on stochastic differential equations.
62 citations
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TL;DR: In this article, a procedure is described that allows one to solve the evolution equations in birefringent optical fibers by using repeated diagonalization, and several practical problems are solved in a unified way.
Abstract: A procedure is described that allows one to solve the evolution equations in birefringent optical fibers by using repeated diagonalization. With this approach several practical problems are solved in a unified way. Included are evolution in twisted fibers, sinusoidally rocked fibers, and fibers with randomly varying birefringence. In the last case it is shown that a phenomenological model described by Poole and others applies to fibers whose axes of birefringence can take on any orientation.
61 citations
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20 Jun 1997TL;DR: In this article, the authors proposed a wavelength division multiplex communication link for optical transmissions, which is able to provide a ultra high bit-rate WDM communication at a 1550nm wavelength band using the existing 1300nm band zero dispersion of a single mode fiber network.
Abstract: The invention provides a wavelength division multiplex communication link for optical transmissions, which is able to provide a ultra high bit-rate wavelength division multiplex communication at a 1550nm wavelength band using the existing 1300nm band zero dispersion of a single mode fiber network. A dispersion compensating fiber DCF having a negative dispersion value at a 1550nm wavelength band is connected to a single mode fiber SMF of the existing 1300nm band zero dispersion of a single mode fiber network with a line length which compensates the dispersion slope of the single mode fiber to zero. And, a dispersion flat fiber which makes the dispersion slope zero is further connected, with a line length which makes the remaining dispersion value zero, to the terminal end of a connection link of the single mode fiber SMF and dispersion compensating fiber DCF, whereby both the dispersion slope of a single mode fiber and dispersion value thereof can be adjusted to be zero at the terminal end of the dispersion flat fiber DFF.
61 citations