Ouyang Yuanjiang, Qianwu Zhang, Yetian Huang, Shuaihang Duan, Kechen Yuan, Yingchun Li, Yingxiong Song, Min Wang. MIMO Pre‑Equalization Based Mode Crosstalk Mitigation Method in Mode Division Multiplexing Passive Optical Network[J]. Chinese Journal of Lasers, 2023, 50(6): 0606002
- Chinese Journal of Lasers
- Vol. 50, Issue 6, 0606002 (2023)
Fig. 1. Principal diagram of MIMO pre-equalization based mode crosstalk mitigation in MDM-PON downlink
Fig. 2. Frame structure for MDM-PON downlink channel impulse response estimation
Fig. 3. MIMO pre-equalizer structure at the transmitter. (a) Without dispersion pre-compensation; (b) with dispersion pre-compensation
Fig. 4. Tap coefficient calculation process for MIMO pre-equalizer at the transmitter
Fig. 5. Block diagram for MDM transmission simulation system using linear polarization mode
Fig. 6. BER versus transmitted optical power with or without crosstalk under OBTB and 5 km FMF.
Fig. 7. BER versus transmitted optical power with crosstalk, with MIMO pre-equalization and with ZF precoding under OBTB and 5 km FMF. (a) LP01 mode; (b) LP11 mode; (c) LP21 mode; (d) LP31 mode
Fig. 8. BER versus transmitted optical power with crosstalk and MIMO pre-equalization (with or without dispersion pre-compensation) under 5 km FMF. (a) LP01 mode; (b) LP11 mode; (c) LP21 mode; (d) LP31 mode
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Table 1. Parameters of FMF used in simulation
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Table 2. Coupling coefficient matrix of Mode MUX in simulation
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Table 3. Power transfer matrix between Mode MUX input and Mode DeMUX output under OBTB and 5 km FMF
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