We experimentally compare the nonlinear tolerance of DWDM 21.4-Gbit/s RZ-DQPSK and 21.4-Gbit/s POLMUX-RZ-DPSK modulation over an 800-km SSMF straight-line. We show that the small depolarization penalty of POLMUX-RZ-DPSK makes it a possible alternative to RZ-DQPSK modulation for next-generation transmission.
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机译：我们通过在800公里的SSMF直线上通过实验地比较DWDM 21.4-Gbit / S RZ-DQ-DQ-DQ-DQ-DQ-DQ-DQ-DQPSK和21.4-Gbit / s Polmux-RZ-D6SK调制的非线性容差。我们表明，Polmux-Rz-DPSK的小型去极化损失使其成为下一代传输的RZ-DQPSK调制的可能替代方案。
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