TELKOMNIKA Telecommunication Computing Electronics and Control
Inverse modeling of few-mode fiber for high-speed optical communication networks

TELKOMNIKA Telecommunication Computing Electronics and Control
Inverse modeling of few-mode fiber for high-speed optical communication networks

Few-mode fiber
Inverse design
Machine learning
Mode-division multiplexing
Ring-core
Weak coupling

Few-mode fibers have been used in contemporary communication with
mode multiplexing and space-division-multiplexing techniques to enhance
the capacity crunch in recent communication links. The design parameters of
the proposed fiber are predicted through machine learning-based inverse
design approach, using regression model. The proposed few-mode fibre
profile parameters are predicted with an accuracy of 99.95% to guide five to
ten modes with weak coupling among the guided modes. In second phase of
this work, the authors used a finite difference method-based solver to obtain
the modal characteristics of the proposed fibre with predicted parameters for
six guided modes, namely, LP01, LP11, LP21, LP31, LP41, and LP51.
The numerical simulation results show that the predicted profile parameter
maximizes effective mode-area and minimizes the inter-channel crosstalk for
mode division multiplexing transmission over C-band. Besides this, the
proposed ring-core few-mode fiber also exhibits nearly zero-dispersion for
LP01 mode at 1550 nm along with low dispersion for other higher-order
modes. Finally, an intensity-modulation and direct-detection mode
multiplexed transmission link without erbium-doped fiber amplifier is
established with six-spatial channels over 50 km and an attenuation of
0.18 dB/km to achieve minimum bit-error-rate of 4.45×10−9

Bhagyalaxmi Behera, Shailendra Kumar Varshney, Mihir Narayan Mohanty

http://telkomnika.uad.ac.id

Oct 26, 2022

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