1、 IEC TR 61282-16 Edition 1.0 2022-05 TECHNICAL REPORT Fibre optic communication system design guidelines Part 16:Coherent receivers and transmitters with high-speed digital signal processing IEC TR 61282-16:2022-05(en)THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2022 IEC,Geneva,Switzerland All
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9、guages.Also known as the International Electrotechnical Vocabulary(IEV)online.IEC TR 61282-16 Edition 1.0 2022-05 TECHNICAL REPORT Fibre optic communication system design guidelines Part 16:Coherent receivers and transmitters with high-speed digital signal processing INTERNATIONAL ELECTROTECHNICAL C
10、OMMISSION ICS 33.180.01 ISBN 978-2-8322-0094-0 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.2 IEC TR 61282-16:2022 IEC 2022 CONTENTS FOREWORD.6 INTRODUCTION.8 1 Scope.9 2 Normative references
11、.9 3 Terms,definitions,and abbreviated terms.9 3.1 Terms and definitions.9 3.2 Abbreviated terms.9 4 Background.12 5 Coherent transmission of vector-modulated signals.13 5.1 Typical receiver architecture.13 5.2 Typical transmitter architecture.14 5.3 Vector-modulated signals.15 5.3.1 Mathematical de
12、scription.15 5.3.2 Binary amplitude and phase modulation.16 5.3.3 Quadrature amplitude modulation.17 5.3.4 Polarization multiplexing.18 5.3.5 Higher-dimensional coding and constellation shaping.18 6 Coherent receiver architectures and functional capabilities.19 6.1 Basic principle of coherent detect
13、ion.19 6.1.1 General.19 6.1.2 Homodyne and heterodyne detection.19 6.1.3 Intradyne detection.21 6.1.4 Polarization dependence.21 6.1.5 Frequency dependence.22 6.1.6 Phase and polarization diversity.22 6.2 Single coherent mixer with balanced detection.23 6.2.1 Principle of operation.23 6.2.2 Common-m
14、ode rejection.24 6.2.3 Polarization dependence.26 6.2.4 Homodyne detection.27 6.2.5 Heterodyne detection.28 6.3 Dual coherent mixer with phase diversity.29 6.3.1 Principle of operation.29 6.3.2 Intradyne detection with frequency offset removal.31 6.3.3 Compensation of chromatic dispersion.33 6.3.4 C
15、ompensation of I-Q skew and phase offset.40 6.3.5 Spectral shaping and frequency equalization.42 6.4 Quadruple mixer with phase and polarization diversity.46 6.4.1 Principle of operation.46 6.4.2 Polarization demultiplexing.48 6.4.3 Compensation of polarization-mode dispersion.51 6.4.4 Compensation
16、of polarization-dependent loss and residual CD.53 6.4.5 Carrier phase recovery.54 6.4.6 Impact of laser phase noise.55 6.5 High-resolution spectral analysis with coherent receivers.62 6.5.1 Measurement methods.62 IEC TR 61282-16:2022 IEC 2022 3 6.5.2 Dual mixer with polarization diversity.63 6.5.3 Examples of high-resolution spectral analysis.64 7 Digital signal processing in coherent receivers.66 7.1 Basic features of digital signal processing.66 7.2 Real-time DSPs for fibre optic communication