Phase Noise Influence in Coherent Optical DnPSK Systems with DSP based Dispersion Compensation
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Abstract
We present a comparative study of the influence of dispersion induced phase noise for n-level PSK systems. From the analysis, we conclude that the phase noise influence for classical homodyne/heterodyne PSK systems is entirely determined by the modulation complexity (expressed in terms of constellation diagram) and the analogue demodulation format. On the other hand, the use of digital signal processing (DSP) in homodyne/intradyne systems renders a fiber length dependence originating from the generation of equalization enhanced phase noise. For future high capacity systems, high constellations must be used in order to lower the symbol rate to practically manageable speeds, and this fact puts severe requirements to the signal and local oscillator (LO) linewidths. Our results for the bit-error-rate (BER) floor caused by the phase noise influence in the case of QPSK, 16PSK and 64PSK systems outline tolerance limitations for the LO performance: 5 MHz linewidth (at 3-dB level) for 100 Gbit/s QPSK; 1 MHz for 400 Gbit/s QPSK; 0.1 MHz for 400 Gbit/s 16PSK and 1 Tbit/s 64PSK systems. This defines design constrains for the phase noise impact in distributed-feed-back (DFB) or distributed-Bragg-reflector (DBR) semiconductor lasers, that would allow moving the system capacity from 100 Gbit/s system capacity to 400 Gbit/s in 3 years (1 Tbit/s in 5 years). It is imperative at the same time to increase the analogue to digital conversion (ADC) speed such that the single quadrature symbol rate goes from today's 25 GS/s to 100 GS/s (using two samples per symbol).
©2014 by Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Amplifiers
- Transmission Properties of Passive Optical Network using Hybrid Raman Amplifiers
- Devices
- Design and Simulation of Four-channel Wavelength Demultiplexer Based on Photonic Crystal Circular Ring Resonators for Optical Communications
- Fibers
- Simple Method for Prediction of Far-Field Patterns of Single-mode Dispersion-shifted and Dispersion-flattened Fibers
- Networks
- In-band Bidirectional Optical Network Based on OCDMA Technique
- DAART: Delay-aware Adaptive Round Time MAC Protocol to Improve Throughput in Light-trail Networks
- Performance Analysis of Hybrid OCDMA/WDM System for Metro Area Network
- Systems
- Impact of Various Weather Condition on the Performance of Free Space Optical Communication System
- Performance Comparison of OFDM based FSO Communication System under Log-normal and Gamma-Gamma Distribution
- Phase Noise Influence in Coherent Optical DnPSK Systems with DSP based Dispersion Compensation
- 10 Gbit/s Bidirectional Long Reach WDM-PON using Externally Modulated Laser for Downlink and RSOA for Uplink with Dispersion Compensating FBG
- Novel Colorless WDM-PON Featuring Optional Broadcast Service and High Reliability
- Theory
- Laser Diode to Single-mode Circular Core Dispersion-shifted/Dispersion-flattened Fiber Excitation via Hemispherical Microlens on the Tip of the Fiber: Evaluation of Coupling Efficiency by ABCD Matrix Formalism
Artikel in diesem Heft
- Frontmatter
- Amplifiers
- Transmission Properties of Passive Optical Network using Hybrid Raman Amplifiers
- Devices
- Design and Simulation of Four-channel Wavelength Demultiplexer Based on Photonic Crystal Circular Ring Resonators for Optical Communications
- Fibers
- Simple Method for Prediction of Far-Field Patterns of Single-mode Dispersion-shifted and Dispersion-flattened Fibers
- Networks
- In-band Bidirectional Optical Network Based on OCDMA Technique
- DAART: Delay-aware Adaptive Round Time MAC Protocol to Improve Throughput in Light-trail Networks
- Performance Analysis of Hybrid OCDMA/WDM System for Metro Area Network
- Systems
- Impact of Various Weather Condition on the Performance of Free Space Optical Communication System
- Performance Comparison of OFDM based FSO Communication System under Log-normal and Gamma-Gamma Distribution
- Phase Noise Influence in Coherent Optical DnPSK Systems with DSP based Dispersion Compensation
- 10 Gbit/s Bidirectional Long Reach WDM-PON using Externally Modulated Laser for Downlink and RSOA for Uplink with Dispersion Compensating FBG
- Novel Colorless WDM-PON Featuring Optional Broadcast Service and High Reliability
- Theory
- Laser Diode to Single-mode Circular Core Dispersion-shifted/Dispersion-flattened Fiber Excitation via Hemispherical Microlens on the Tip of the Fiber: Evaluation of Coupling Efficiency by ABCD Matrix Formalism
