Mode coupling at connectors in mode-division multiplexed transmission over few-mode fiber
Jordi Vuong,Petros Ramantanis,Yann Frignac,Massimiliano Salsi,Philippe Genevaux,Djalal Falih Bendimerad,Gabriel Charlet +6 more
TLDR
This work analytically derive the coupling matrix of the multimode connector and numerically study the dependence of the matrix coefficients as a function of the butt-joint connection characteristics to assess the impact of the connector on the signal quality investigating different receiver digital signal processing (DSP) schemes.Abstract:
In mode-division multiplexed (MDM) transmission systems, mode coupling is responsible for inter-modal crosstalk. We consider the transmission of modulated signals over a few-mode fiber (FMF) having low mode coupling and large differential mode group delay in the presence of a non-ideal fiber connection responsible for extra mode coupling. In this context, we first analytically derive the coupling matrix of the multimode connector and we numerically study the dependence of the matrix coefficients as a function of the butt-joint connection characteristics. The numerical results are then validated through an experiment with a five-mode setup. Finally, through numerical simulations, we assess the impact of the connector on the signal quality investigating different receiver digital signal processing (DSP) schemes.read more
Citations
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Journal ArticleDOI
Design and fabrication of elliptical-core few-mode fiber for MIMO-less data transmission
TL;DR: This work proposes a design strategy of elliptical core few-mode fiber that supports three spatial modes with enhanced mode spacing between LP11a and LP11b, to suppress intra-mode coupling during mode-division multiplexing (MDM) transmission.
Journal ArticleDOI
Group Delay Management and Multiinput Multioutput Signal Processing in Mode-Division Multiplexing Systems
TL;DR: It is shown that the GD spread is a key factor determining the feasibility of MIMO DSP, and its feasibility requires judicious GD management.
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All-fiber bandwidth tunable ultra-broadband mode converters based on long-period fiber gratings and helical long-period gratings.
TL;DR: The ultra-Broadband mode converter can be adopted as a bandwidth tunable mode converter, which can be applied in ultra-broadband mode-division-multiplexing transmission systems and optical fiber sensing systems based on few-mode fibers.
Journal ArticleDOI
Advanced Spatial-Division Multiplexed Measurement Systems Propositions-From Telecommunication to Sensing Applications: A Review.
TL;DR: The crucial components of SDM techniques, such as laser beam shaping, mode generation and conversion, multimode or multicore elements using special fibers and multiplexers are introduced, along with the recent developments in SDM amplifiers, opto-electronic sources and detection units of sensing systems.
Journal ArticleDOI
Optical Performance Monitoring in Mode Division Multiplexed Optical Networks
TL;DR: 1-D features vector, extracted by projecting a 2-D asynchronous in-phase quadrature histogram (IQH), and the 2D IQH are proposed to achieve OPM in FMF-based network and simulation results show that the proposed 1D projection features vector provides better OPM results than those of the widely used asynchronous amplitude histograms (AAH).
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TL;DR: Mode-division multiplexing is demonstrated over five modes for the first time over 40km few-mode fiber, demultiplexed, and successfully recovered.
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