Related Experiment Video
Updated: Jun 30, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Equalization-enhanced phase noise for coherent-detection systems using electronic digital signal processing
1ARC Special Research Center for Ultra-Broadband Information Networks and National ICT Australia, Department of Electrical and Electronic Engineering, The University of Melbourne, Melbourne, VIC 3010, Australia. w.shieh@ee.unimelb.edu.au
Electronic compensation of chromatic dispersion in optical systems can worsen laser phase noise. This equalization-enhanced phase noise (EEPN) limits high-speed systems with significant electronic dispersion compensation.
Area of Science:
- Optical Communications
- Digital Signal Processing
- Photonics Engineering
Background:
- Coherent optical systems utilize electronic digital signal processing for chromatic dispersion compensation.
- Electronic compensation offers an alternative to traditional optical dispersion compensators.
- Electronic equalizers can inadvertently amplify impairments like laser phase noise.
Purpose of the Study:
- To analyze the impact of electronic dispersion compensation on laser phase noise in coherent optical systems.
- To investigate the phenomenon of equalization-enhanced phase noise (EEPN).
- To determine the constraints EEPN imposes on system design parameters.
Main Methods:
- Simulations and theoretical analysis of coherent optical systems.
- Modeling the interaction between electronic dispersion compensation and laser phase noise.
- Evaluating system performance under varying symbol rates and dispersion compensation levels.
Main Results:
- Electronic dispersion compensation enhances laser phase noise impairments.
- The phenomenon termed equalization-enhanced phase noise (EEPN) is identified.
- EEPN introduces stricter requirements for receive laser phase noise in high symbol rate systems with substantial electronic dispersion compensation.
Conclusions:
- EEPN is a critical factor in designing high-performance coherent optical systems.
- System designers must account for EEPN when implementing electronic dispersion compensation.
- Further research is needed to mitigate EEPN for future high-speed optical networks.
More Related Videos
09:01Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
Published on: April 4, 2017
08:39Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
Published on: January 28, 2019
Related Concept Videos
Time and frequency -Domain Interpretation of Phase-lead Control
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
Time and frequency -Domain Interpretation of Phase-lag Control
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any finite,...
Gain
Gain:
Suppose Vin is the input and Vout is the output signal to a circuit.
Electronic Distance Measuring Instruments
Upsampling
Reconstruction of Signal using Interpolation