1、 IEC/TR 61282-4 Edition 2.0 2013-11 TECHNICAL REPORT Fibre optic communication system design guides Part 4:Accommodation and utilization of non-linear effects IEC/TR 61282-4:2013(E)Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-27-2014 by James Madison
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9、sistance,please contact the Customer Service Centre:csciec.ch.Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.IEC/TR 61282-4 Edition 2.0 2013-11 TECH
10、NICAL REPORT Fibre optic communication system design guides Part 4:Accommodation and utilization of non-linear effects INTERNATIONAL ELECTROTECHNICAL COMMISSION S ICS 33.180.01 PRICE CODE ISBN 978-2-8322-1174-8 Registered trademark of the International Electrotechnical Commission Warning!Make sure t
11、hat you obtained this publication from an authorized distributor.Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.2 TR 61282-4 IEC:2013(E)CONTENTS FOR
12、EWORD.3 1 Scope.5 2 Normative references.5 3 Abbreviations and symbols.5 3.1 Abbreviations.5 3.2 Symbols.6 4 General.7 4.1 System trends leading to non-linear effects.7 4.2 Optical amplifiers and non-linearities.7 4.3 Background and notation.8 4.3.1 Wavelength and frequency.8 4.3.2 Various velocitie
13、s.8 4.3.3 Chromatic dispersion.10 4.3.4 Fibre types.10 4.4 General optical non-linearities.10 5 Optical non-linearities based on scattering.11 5.1 General description of scattering.11 5.2 Stimulated Brillouin scattering(SBS).12 5.2.1 Phenomenon.12 5.2.2 Effects.13 5.2.3 Mitigation.14 5.3 Stimulated
14、Raman scattering(SRS).14 5.3.1 Phenomenon.14 5.3.2 Effects.15 5.3.3 Mitigation.15 6 Optical non-linearities based on index effects.16 6.1 General description of induced non-linear phase.16 6.2 Self-phase modulation(SPM).16 6.3 Cross-phase modulation(XPM or CPM).17 6.4 Modulation instability(MI).18 6
15、.5 Four-wave mixing(FWM).19 6.5.1 Effect.19 6.5.2 Transmission impairments.19 6.5.3 Mitigation.20 6.6 Compensation for non-linear impairments with digital signal processing.20 7 Summary.20 Bibliography.22 Figure 1 Power effects of stimulated Brillouin scattering for a narrow-band source.14 Figure 2
16、Schematic of a fibre Raman laser.16 Figure 3 SPM Non-linear phase shift and frequency change during pulse modulation.17 Figure 4 MI Spectral side-lobes 100 ps wide,7 W peak pulse in 1 km fibre.18 Figure 5 FWM Input and output photon frequencies.19 Table 1 Correspondence of wavelength and frequency.9 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when prin