NDLI: Digital Pre-Emphasis in Optical Communication Systems: On the Nonlinear Performance

Content Provider	IEEE Xplore Digital Library
Author	Rafique, D. Rahman, T. Napoli, A. Spinnler, B.
Copyright Year	1983
Abstract	Digital signal pre-processing at the transmitter is a key enabler for next-generation optical transceivers. One of the major challenges faced by these transponders is the limited resolution and -3 dB electrical bandwidth of the digital-to-analog converters (DAC), severely limiting the transmission performance. On the other hand, these spectrally efficient flexible transport networks are extremely sensitive to nonlinear channel impairments, essentially limiting the maximum system reach. In this paper, we employ a simple digital pre-emphasis (DPE) algorithm to mitigate DAC-induced signal distortions, and further report on the impact of DPE algorithm on nonlinear transmission performance. We demonstrate, both numerically and experimentally, that DPE not only counteracts DAC low-pass response, allowing for higher baud rate transmission, but also enables better nonlinear channel tolerance. In particular, we first establish the maximum transmittable baud rates in back-to-back configuration for polarization multiplexed m-state quadrature amplitude modulation (PM-mQAM) formats, allowing up to 50, 46 and 44 Gbaud transmission for PM-4QAM, PM-8QAM, and PM-16QAM, respectively assuming typical DAC specifications of 16 GHz -3 dB bandwidth and 5.5 effective number of bits. Furthermore, we show that the performance improvements from DPE increase with increasing modulation order and decreasing span count, with maximum improvements of up to ~2.2 dB. In a conventional standard single mode fiber transmission link with lumped amplification, employing DPE, we report maximum reach of up to ~10 000, ~5000, and ~3000 km, for PM-4QAM, PM-8QAM, and PM-16QAM, respectively. Moreover, at pre-FEC bit-error-rate, relative reach improvements from DPE are found to be up to 21%, 25%, and 27%, respectively. Finally, we show that DPE gains are constant beyond a minimum required channel spacing, with minimum spacing requirements of 1.1 × baud rate, 1.15 × baud rate, and 1.2 × baud rate for PM-4QAM→PM-16QAM, respectively.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	140
Ending Page	150
Page Count	11
File Size	1038541
File Format	PDF
ISSN	07338724
Volume Number	33
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Modulation Bandwidth Q-factor Optical noise Receivers Noise Optical polarization Kerr effect Coherent detection Nyquist digital-to-analog converter pre-emphasis digital signal processing
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Compensation of Dispersion and Nonlinear Impairments Using Digital Backpropagation

Performance Comparison of Single-Sideband Direct Detection Nyquist-Subcarrier Modulation and OFDM

Digital Coherent Optical Receivers: Algorithms and Subsystems

Fiber Nonlinearity Compensation: Commercial Applications and Complexity Analysis

Multi-Level, Multi-Dimensional Coding for High-Speed and High-Spectral-Efficiency Optical Transmission

Electronic Polarization Control Algorithms for Coherent Optical Transmission

Mitigation of Fiber Nonlinearity Using a Digital Coherent Receiver

130-GSa/s photonic analog-to-digital converter with time stretch preprocessor

Reduced Complexity Digital Back-Propagation Methods for Optical Communication Systems

Digital Pre-Emphasis in Optical Communication Systems: On the Nonlinear Performance

Similar Documents

Compensation of Dispersion and Nonlinear Impairments Using Digital Backpropagation

Performance Comparison of Single-Sideband Direct Detection Nyquist-Subcarrier Modulation and OFDM

Digital Coherent Optical Receivers: Algorithms and Subsystems

Fiber Nonlinearity Compensation: Commercial Applications and Complexity Analysis

Multi-Level, Multi-Dimensional Coding for High-Speed and High-Spectral-Efficiency Optical Transmission

Electronic Polarization Control Algorithms for Coherent Optical Transmission

Mitigation of Fiber Nonlinearity Using a Digital Coherent Receiver

130-GSa/s photonic analog-to-digital converter with time stretch preprocessor

Reduced Complexity Digital Back-Propagation Methods for Optical Communication Systems

Digital Pre-Emphasis in Optical Communication Systems: On the Nonlinear Performance