Scholarlink

<p>Mode division multiplexing (MDM) is capable of effectively enhancing the spectral efficiency of optical communication systems. However, practical mode demultiplexers inevitably introduce mode crosstalk and then result in the degradation of mode extinction ratio (MER). To improve the transmission performance of MDM systems, we propose an all-optical regeneration scheme using a nonlinear bidirectional semiconductor optical amplifier (SOA), and combine it with a passive mode demultiplexer (MDEMUX) to form the called regenerative MDEMUX. Simulations show that the regenerative MDEMUX has an MER improvement of about 6.5&#xa0;dB for the LP<sub>01</sub> and LP<sub>11</sub> modes compared with the passive MDEMUX. To effectively suppress the co-frequency mode crosstalk, the regenerative MDEMUX can be applied to the MIMO-free MDM systems and the maximal Q-factor improvement of on–off keying (OOK) signals is up to 1.99&#xa0;dB and 2.06&#xa0;dB for the two modes, respectively. The dependencies of Q-factor improvement on mode crosstalk frequency spacing, bit rate, modal power, modulation format and ASE noise are also discussed. The proposed regeneration scheme is applied to the future MDM systems and all-optical switching nodes.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Regenerative mode demultiplexer with application to MIMO-free MDM systems

  • 期刊论文

  • 发表日期：

    2025年11月11日

查看全文
  • Yanjun Chen,
  • Baojian Wu,
  • Xinyu Ma,
  • Feng Wen,
  • Kun Qiu

摘要

Mode division multiplexing (MDM) is capable of effectively enhancing the spectral efficiency of optical communication systems. However, practical mode demultiplexers inevitably introduce mode crosstalk and then result in the degradation of mode extinction ratio (MER). To improve the transmission performance of MDM systems, we propose an all-optical regeneration scheme using a nonlinear bidirectional semiconductor optical amplifier (SOA), and combine it with a passive mode demultiplexer (MDEMUX) to form the called regenerative MDEMUX. Simulations show that the regenerative MDEMUX has an MER improvement of about 6.5 dB for the LP01 and LP11 modes compared with the passive MDEMUX. To effectively suppress the co-frequency mode crosstalk, the regenerative MDEMUX can be applied to the MIMO-free MDM systems and the maximal Q-factor improvement of on–off keying (OOK) signals is up to 1.99 dB and 2.06 dB for the two modes, respectively. The dependencies of Q-factor improvement on mode crosstalk frequency spacing, bit rate, modal power, modulation format and ASE noise are also discussed. The proposed regeneration scheme is applied to the future MDM systems and all-optical switching nodes.