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Optical Multi Input Multi Output signal processing with linearly polarized mode groups to enhance mode division multiplexing

R. GUPTA1,* , R. S. KALER1

Affiliation

  1. Thapar Institute of Engineering and Technology, Department of Electronics and Communication Engineering, Patiala, India

Abstract

This paper investigated the effect of different LPlm mode index grouping combinations (Even, Odd, Random Even+Odd and Symmetric Even+Odd with mode gap) on performance of different OMIMO-Mode division multiplexed configurations (5 × 5, 6 × 6, 7 × 7, 8 × 8 and 9 × 9 MIMO). It is reported that mode index grouping combination (Symmetric Even+Odd with mode gap) provide best results for all optical MIMO MDM configurations covering 120km of transmission distance over MMF with acceptable Quality-factor (>8.3 dB) to enhance the system performance. The optimization of system is done by utilizing LMS (least mean square) adaptive MIMO filter algorithm to minimize the mean-squared error at the output signal in order to avoid mode group coupling in MDM based system. Featuring distinctive simplicity with reduced interference, the proposed design is ideal to cope up with the reliable and error free transmission with minimum use of bandwidth for upcoming optical communication. The proposed transmission system can be used for access related optical and super computer interconnects. This analysis can further be used for mode group division multiplexing to increase the capacity of high speed transmission over multimode fiber link..

Keywords

Optical fiber communication, LP (linearly polarized) modes, MDM (Mode Division Multiplexing), MMF (multi-mode fiber), MM EDFA (Multi-mode Erbium Doped Fiber Amplifier) and OMIMO (Optical Multi-input multi-output).

Citation

R. GUPTA, R. S. KALER, Optical Multi Input Multi Output signal processing with linearly polarized mode groups to enhance mode division multiplexing, Optoelectronics and Advanced Materials - Rapid Communications, 14, 3-4, March-April 2020, pp.154-162 (2020).

Submitted at: Jan. 24, 2019

Accepted at: April 9, 2020