CPR-MIMO-CMA in Mode Division Multiplexing Systems

Bugao Yang; Feng Tian; Xiaodong Liu

doi:10.3788/AOS231675

Acta Optica Sinica, Volume. 44, Issue 5, 0506005(2024)

CPR-MIMO-CMA in Mode Division Multiplexing Systems

Bugao Yang¹, Feng Tian^1、*, and Xiaodong Liu²

¹School of Electronic Engineering, State Key Laboratory of Information Photonics and Optical Communication, Beijing Key Laboratory of Space-Ground Interconnection and Convergence, Beijing University of Posts and Telecommunications, Beijing 100876, China

²Beijing Ancoren Technology Co., Ltd, Beijing 101102, China

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Figures & Tables(9)

Fig. 1. Duplicate data misplacement sending. (a) Fiber link; (b) unaligned data

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Fig. 2. Two mode coupling simulation diagram

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Fig. 3. Relationship among $C_{X T, C P R}$ , coupling strength, and propagation distance. (a) Data is concentrated in areas with low XT intensity and large propagation distance; (b) data is concentrated in high XT intensity areas

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Fig. 4. Flow chart of 3×3 CPR-MIMO-CMA

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Fig. 5. System block diagram of three mode transmission experimental platform

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Fig. 6. Correlation peaks in three signals. (a) Correlation peak of LP01 mode; (b) correlation peak of LP11a mode; (c) correlation peak of LP21 mode

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Fig. 7. Relationship between error rate and received optical power of traditional equalization and equalization with CPR parameters in three modes. (a) $L P 01$ mode; (b) $L P 11$ mode; (c) $L P 21$ mode

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Fig. 8. Comparison of convergence speed between CPR-MIMO-CMA and traditional CMA

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Table 1. Mode coupling parameters of FM SI-4
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Table 1. Mode coupling parameters of FM SI-4
Mode Mode crosstalk /dB
LP01 LP11a LP11b LP21
LP01 0 -21.90 -21.95 -28.46
LP11a -21.90 0 -27.45 -26.32
LP11b -21.95 -27.45 0 -25.23
LP21 -28.46 -26.32 -25.23 0