Optical Phase Conjugation Using Nonlinear SOA for Nonlinearity and Dispersion Compensation of Coherent Multi-Carrier Lightwave Systems
Lakshmi Narayanan Venkatasubramani,Aneesh Sobhanan,Anirudh Vijay,R. David Koilpillai,Deepa Venkitesh +4 more
TLDR
The effectiveness of the SOA-based phase conjugator to improve the link budget with a 100 km standard single mode fiber link for 20 GHz coherent OFDM signals, with QPSK and 16QAM modulations and a corresponding net bit-rate of 40 Gbps and 80 Gbps respectively is experimentally demonstrated.Abstract:
We study the use of nonlinear semiconductor optical amplifier (SOA) for generating optical phase conjugate towards compensation of distortions in short distance optical fiber transmission due to Kerr nonlinearity and chromatic dispersion in coherent multi-carrier lightwave signals. We experimentally demonstrate the effectiveness of the SOA-based phase conjugator to improve the link budget with a 100 km standard single mode fiber link for 20 GHz coherent OFDM signals, with QPSK and 16QAM modulations and a corresponding net bit-rate of 40 Gbps and 80 Gbps respectively. Mid-span spectral inversion scheme is employed where the optical phase conjugate is generated through a partially degenerate four-wave mixing process in a nonlinear SOA. We demonstrate a bit error rate performance within $2\times 10^{-2}$ for an average launched power of up to 12 dBm (9 dBm) for QPSK (16QAM) coherent OFDM signals, in a 100 km fiber link. We also investigate the possible improvement in link budget using numerical simulation for 16QAM and 64QAM CO-OFDM signals with the proposed scheme.read more
Citations
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Semiconductor optical amplifiers: recent advances and applications
Deepa Venkitesh,Laura Dybyssova +1 more
TL;DR: In this article , the basic functioning of an optical amplifier and distortions of coherent signals when used as amplifiers are discussed, and optical signal processing techniques enabled by SOAs with an emphasis on all-optical wavelength conversion, optical phase conjugation, and phase quantization of coherent optical signals.
Journal ArticleDOI
Design and Investigation of Fiber Impairment Mitigation Based on Optical Phase Conjugation Technique
TL;DR: In this article , a linear and nonlinear compensation system for the Dense Wave Division Multiplexing (DWDM) transmission system has been created and researched in this work along the optical link, a new method known as optical phase conjugation (OPC) is used as part of the process of improving the performance of communication systems.
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TL;DR: In this article, optical phase conjugation (OPC) is used for compensation of chromatic dispersion and nonlinear impairments in WDM 40-Gb/s long-haul transmission.
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