Huiwen Fu, Ziyue Zhu, Jian Chen. Crosstalk Mitigation Technology in Mode Group Division Multiplexing Transmission Based on Precoding[J]. Acta Optica Sinica, 2021, 41(6): 0606003
- Acta Optica Sinica
- Vol. 41, Issue 6, 0606003 (2021)
Fig. 1. Diagram of a signal transfer path represented by the round-trip transmission matrix. (a) Signal path for the training signal x1(t) only; (b) signal path for the training signal x2(t) only
Fig. 2. Schematic of data transmission and training signal
Fig. 3. Experimental structure of signal transmission in a mode group division multiplexing system
Fig. 4. BER versus transmitted optical power with or without crosstalk. (a) BTB; (b) 500 m FMF
Fig. 5. Signal eye diagrams before and after precoding. (a) Before precoding under BTB; (b) after precoding under BTB; (c) before precoding under 500 m few mode fiber; (d) after precoding under 500 m few mode fiber
Fig. 6. BER versus transmitted optical power with or without precoding. (a) BTB; (b) 500 m FMF
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Table 1. Parameters of an experimental system
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Table 2. Static transfer matrix through back to back
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Table 3. Static transfer matrix through the few mode fiber with a length of 500 m
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