Single parity check-coded 16QAM over spatial superchannels in multicore fiber transmission.

Single parity check-coded 16QAM over spatial superchannels in multicore fiber transmission.
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DOI:
10.1364/oe.23.014569
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发表时间:
2015-06
期刊:
影响因子:
3.8
通讯作者:
T. Eriksson;R. Luís;B. Puttnam;J. D. Mendinueta;P. Andrekson;M. Karlsson;Y. Awaji;N. Wada;E. Agrell
T. Eriksson;R. Luís;B. Puttnam;J. D. Mendinueta;P. Andrekson;M. Karlsson;Y. Awaji;N. Wada;E. Agrell
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
T. Eriksson;R. Luís;B. Puttnam;J. D. Mendinueta;P. Andrekson;M. Karlsson;Y. Awaji;N. Wada;E. Agrell

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我们使用 7 芯光纤,通过实验研究了基于偏振复用 16 进制正交幅度调制 (PM-16QAM) 的单奇偶校验 (SPC) 编码空间超级通道,用于多芯光纤传输系统。我们研究了背靠背配置中 1、2、4、5 或 7 个内核的 SPC,并比较了与未编码 PM-16QAM 的灵敏度,结果表明,在 20 Gbaud 符号率和 10-3 误码率 (BER) 下,SPC 超级通道的灵敏度分别提高了 2.7 dB、2.0 dB、1.7 dB、1.3 dB 和 1.1 dB。我们对 1、3 和 7 芯 SPC 进行了单通道和波分复用 (WDM) 传输实验,通道间隔为 22 GHz,通道符号率为 20 Gbaud,并将结果与​​具有相同间隔和符号率的 PM-16QAM 进行比较。我们表明,在 WDM 信号中,与 PM-16QAM 相比,基于 hl1 核心的 SPC 可以实现两倍以上的传输距离,但频谱效率 (SE) 为 0.91 位/秒/赫兹/核心。当在 7 个核心上共享奇偶校验位时,SE 的损失仅为 0.13 位/秒/赫兹/核心,而 PM-16QAM 的传输范围增加了 44%。
We experimentally investigate single-parity check (SPC) coded spatial superchannels based on polarization-multiplexed 16-ary quadrature amplitude modulation (PM-16QAM) for multicore fiber transmission systems, using a 7-core fiber. We investigate SPC over 1, 2, 4, 5 or 7 cores in a back-to-back configuration and compare the sensitivity to uncoded PM-16QAM, showing that at symbol rates of 20 Gbaud and at a bit-error-rate (BER) of 10-3, the SPC superchannels exhibit sensitivity improvements of 2.7 dB, 2.0 dB, 1.7 dB, 1.3 dB, and 1.1 dB, respectively. We perform both single channel and wavelength division multiplexed (WDM) transmission experiments with 22 GHz channel spacing and 20 Gbaud channel symbol rate for SPC over 1, 3 and 7 cores and compare the results to PM-16QAM with the same spacing and symbol rate. We show that in WDM signals, SPC over hl1 core can achieve more than double the transmission distance compared to PM-16QAM at the cost of 0.91 bit/s/Hz/core in spectral efficiency (SE). When sharing the parity-bit over 7 cores, the loss in SE becomes only 0.13 bit/s/Hz/core while the increase in transmission reach over PM-16QAM is 44 %.