Title :
New low-complexity but effective mitigation for penalties from in-band crosstalk of multicore fiber with advanced modulation formats
Author :
Borui Li ; Ming Tang ; Jingchi Cheng ; Songnian Fu ; Shiwei Zhou ; Shum, Perry Ping
Author_Institution :
Sch. of Opt. & Electron. Inf., Huazhong Univ. of Sci&Tech (HUST), Wuhan, China
Abstract :
We have modeled the intercore crosstalk of multicore fiber and proposed an effective method for mitigating the penalties from the crosstalk. Employing the same local oscillator to hybrid with signals in different cores and taking advantage of the estimated phase information of the signal in other cores, the SNR penalty is reduced below 1dB for any core of MCF with QPSK signals before the crosstalk approaches the threshold value where cycle slip occurs, and for 16QAM signal, the crosstalk tolerance has been increased by at most 10dB at 1dB SNR penalty for both inner core and outer core.
Keywords :
computational complexity; optical crosstalk; optical fibre networks; optical modulation; oscillators; phase estimation; quadrature amplitude modulation; quadrature phase shift keying; 16-quadrature amplitude modulation; 16QAM signal; MCF cross talk; QPSK signals; SNR penalty; intercore crosstalk; modulation formats; multicore fiber; penalty mitigation; phase information estimation; quadrature phase shift-keying; signal-to-noise-ratio penalty; crosstalk; multicore fiber; signal recovery;
Conference_Titel :
Optical Communications and Networks (ICOCN), 2014 13th International Conference on
Conference_Location :
Suzhou
DOI :
10.1109/ICOCN.2014.6987063