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| 2. |
- Eliasson, Henrik, 1985, et al.
(författare)
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Transmitter mask testing for 28 GBaud PM-QPSK
- 2013
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Ingår i: Optical Communication (ECOC 2013), 39th European Conference and Exhibition on. - : Institution of Engineering and Technology. - 9781849197595 ; 2013, s. 282 - 284
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Konferensbidrag (refereegranskat)abstract
- We suggest a method for pass/fail testing of PM-QPSK transmitters. The test is based on mask testing with time-resolved EVM and accepts transmitters where individual impairments cause less than 0.5 dB OSNR penalty. The design of the test is performed by computer simulations followed by experimental verification of some key results.
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| 3. |
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| 4. |
- Hansryd, Jonas, 1972, et al.
(författare)
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Impact of PMD on four-wave-mixing-induced crosstalk in WDM systems
- 2000
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Ingår i: IEEE Photonics Technology Letters. - : Institute of Electrical and Electronics Engineers (IEEE). - 1041-1135 .- 1941-0174. ; 12:9, s. 1261-1263
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Tidskriftsartikel (refereegranskat)abstract
- The impact of polarization-mode dispersion (PMD) on four-wave mixing crosstalk in wavelength-division-multiplexed (WDM) fiber systems is quantified on a commercial system. It is found that even a small amount of PMD reduces the benefit of using polarization-multiplexed channels for suppression of crosstalk. As a rule of thumb, it is suggested that polarization-multiplexed schemes are of significant interest only when system differential group-delay (DGD) is smaller than DGD <1/(4Δf), where Δf is the channel-spacing.
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| 5. |
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| 6. |
- Hellström, E., et al.
(författare)
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Third-order dispersion compensation using a phase modulator
- 2003
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Ingår i: Journal of Lightwave Technology. - 0733-8724 .- 1558-2213. ; 20:5, s. 1188-1197
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Tidskriftsartikel (refereegranskat)abstract
- Compensation of third-order dispersion in a fiber-optic transmission system using a phase modulator is studied both theoretically and experimentally. A sinusoidal signal is used as modulation function, where the amplitude and phase delay are optimized. The 2-ps input pulses (160-Gb/s compatible) were transmitted through a 626-km fiber link, where the characteristic oscillating tail was measured with a 1.6-ps resolution optical sampling system. When applying the phase modulation, the oscillating tail was significantly suppressed. The pulses were also used in a 160-Gb/s transmission experiment, where the eye diagrams were measured with the sampling system. Numerical simulations and practical experiments showed excellent agreement.
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| 7. |
- Karlsson, Magnus, 1967, et al.
(författare)
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Effect of nonlinearities on PMD system degradations
- 2006
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Ingår i: OFC/NFOEC 2006. 2006 Optical Fiber Communication Conference and National Fiber Optic Engineers Conference. ; , s. OWE4-
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Konferensbidrag (refereegranskat)abstract
- We review and discuss cross-phase modulation-induced polarization state changes in WDM systems, so called cross-polarization modulation, XPolM, and how it influences outage probabilities in polarization mode dispersion-limited systems
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| 8. |
- Karlsson, Magnus, 1967, et al.
(författare)
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Effects of Nonlinearities on PMD-Induced System Impairments
- 2006
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Ingår i: Journal of Lightwave Technology. - 0733-8724 .- 1558-2213. ; 24:11, s. 4127-4137
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Tidskriftsartikel (refereegranskat)abstract
- It is well known that cross-phase-modulation-induced polarization rotation, cross-polarization modulation (XPolM), significantly degrades the performance of polarization-mode-dispersion (PMD) compensators. In this paper, the research on XPolM is reviewed, unique simulations of XPolM in the presence of walk off are presented, and some pitfalls are demonstrated with respect to choice of data streams in such simulations. Then, the authors discuss how XPolM affects PMD and PMD-induced outage probabilities (OP) in fiber-communication systems by providing analytical formulas for the OP with and without XPolM. Finally, the XPolM and PMD compensation are tied together by giving simple rules of thumb for when XPolM degrades PMD compensated systems, and PMD mitigation methods that are robust to XPolM are discussed.
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| 9. |
- Karlsson, Magnus, 1967, et al.
(författare)
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High-speed OTDM and impact of PMD
- 1999
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Ingår i: 1999 IEEE LEOS Annual Meeting Conference Proceedings. LEOS'99. 12th Annual Meeting. IEEE Lasers and Electro-Optics Society 1999 Annual Meeting. - 0780356349
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Konferensbidrag (refereegranskat)abstract
- We discuss the impact of polarization mode dispersion (PMD) in high-speed fiber transmission. Special emphasis is put on PMD compensation techniques, and their intrinsic limitations. We also propose a new and simple distributed compensation scheme.
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| 10. |
- Karlsson, Magnus, 1967, et al.
(författare)
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Higher order polarization mode dispersion compensator with three degrees of freedom
- 2001
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Ingår i: Optical Fiber Communication Conference and International Conference on Quantum Information. - 1557526540
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Konferensbidrag (refereegranskat)abstract
- We compare several PMD compensation methods, and find that the simple PMD compensator with a variable polarization controller (PC) and a variable time delay line can compensate for not only first, but also higher order PMD.
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