scholarly journals Palliation of Four-Wave Mixing in Optical Fibers Using Improved DSP Receiver

Electronics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 611
Author(s):  
Fazal Muhammad ◽  
Farman Ali ◽  
Ghulam Abbas ◽  
Ziaul Haq Abbas ◽  
Shahab Haider ◽  
...  
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Performance Metrics ◽  
Polarization Mode Dispersion ◽  
Digital Signal ◽  
Nonlinear Effects ◽  
Four Wave Mixing ◽  
Optical Signal ◽  
Modulation Scheme ◽  
Wave Mixing

A long haul optical communication system (LHOCS) is one of the key resources to fulfill the higher capacity requirements in future communication networks. To launch LHOCS, the system mainly faces high order nonlinear effects. The four-wave mixing (FWM) is one of the major nonlinear effects, which limits the transmission distance. Therefore, in this paper, an advanced duo-binary (DB) modulation scheme-based system is evaluated by employing an improved digital signal processing (IDSP) approach at the receiver side to suppress the FWM effect. In addition, an analytical analysis is also performed for the proposed system. To observe the difference between the IDSP and conventional digital signal processing (DSP), the various performance metrics such as bit error rate (BER), Q-factor, and optical signal-to-noise ratio (OSNR) parameters are evaluated. Variable channel spacing along with polarization mode dispersion (PMD) are analyzed at several ranges of input powers and fiber lengths. The analytical and simulation-based calculations exhibit the effectiveness of the proposed model and hence, FWM effect are compensated to achieve 500 km optical fiber propagation range with a BER below 10−6.

Ultrahigh-efficiency enhancedfour-wave-mixing in Si-Ge-Graphene photonic crystal waveguide

2021 ◽  
Vol 01 ◽  
Author(s):  
Yujun Hou ◽  
Chun Jiang
Keyword(s):  
Signal Processing ◽  
Photonic Crystal ◽  
Conversion Efficiency ◽  
Optical Signal Processing ◽  
Four Wave Mixing ◽  
Optical Signal ◽  
Wave Mixing ◽  
Photonic Crystal Waveguide ◽  
Optical Processing ◽  
All Optical

Background: All-optical processing has a huge superiority in speed and efficiency than traditional optical-electrical-optical signal processing. Four-wave-mixing is an important nonlinear parametric process to achieve all-optical processing. Objective: We proposed the photonic crystal waveguide to enhance the conversion efficiency of four-wave-mixingsignificantly in practical application. Methods: We demonstrate a waveguide composed of silicon with mono-layer graphene coated as core and Si-Ge distributed periodically on both sides as cladding. By the introduction of slow light effect of Si-Ge photonic crystal and the localization effect of graphene, the conversion efficiency of four-wave-mixing has enhanced dramatically. Results: The conversion efficiency can be increased by 16dB compared with silicon waveguide and the maximum efficiency as high as -9.1dB can be achieved in the Si-Ge-Graphene photonic crystal waveguide (SGG-PhCWG).The propagation loss can be decreased as small as 0.032dB/cm. Conclusions: Numerical results of proposed SGG-PhCWGmatch well with nonlinear coupled-mode theory. This configuration offers a new physical mechanism and solution for all-optical signal processing and high efficiency nonlinear nanoscale devices.

Optical signal processing using four wave mixing in highly nonlinear silicon nano-wire

Optik ◽  
2013 ◽  
Vol 124 (18) ◽  
pp. 3439-3442 ◽  
Author(s):  
Jameel Ahmed ◽  
Ashiq Hussain ◽  
Freeha Adeel ◽  
M.Y. Siyal ◽  
Chongxiu Yu
Keyword(s):  
Signal Processing ◽  
Optical Signal Processing ◽  
Four Wave Mixing ◽  
Optical Signal ◽  
Wave Mixing ◽  
Highly Nonlinear

scholarly journals Michelson interferometer system with acoustic optic filter and fiber Bragg grating for reduction of four-wave mixing

2019 ◽  
Vol 15 (7) ◽  
Author(s):  
Fabio Barros De Sousa ◽  
Jorge Everaldo De Oliveira ◽  
Fiterlinge Martins De Sousa ◽  
Marcio Benedito Caldas Costa ◽  
Osmar Tharlles Borges De Oliveira ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Performance Metrics ◽  
Michelson Interferometer ◽  
Single Mode ◽  
Four Wave Mixing ◽  
Optical Signal ◽  
Input Power ◽  
Bragg Grating ◽  
Wave Mixing ◽  
Q Factor

In this paper a simplified design and efficient of a Michelson Interferometer (MI) system is presented, capable of reducing the Four-Wave Mixing (FWM) effects, using fiber Bragg grating and acoustic optic filter (FBG and AOF) with the aid of a highly non-linear photonic crystal fiber (HNL-PCF). The analysis of the MI system based in FBG and AOF was performed according to the effect of fiber length and input power by performance metrics: Optical Spectrum, maximum Quality factor (max. Q-factor), minimum bit error rate (min. BER), eye height, optical signal-to-noise ratio (OSNR) and timing jitter. The numerical simulation results showed that the MI system with FBG and AOF maintained a good signal performance, with Q-factor equal to 33.3 even after 100 km of single mode fiber (SMF) and with downstream signal power by up to 10 dBm.

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