Feng Lipeng, Li Yan, Zhou HongHang, Wu Sihan, Yang Chen, Li Wei, Qiu Jifang, Guo Hongxiang, Hong Xiaobin, Wu Jian
Appl Opt. 2018 Dec 20;57(36):10528-10533. doi: 10.1364/AO.57.010528.
This paper proposes and experimentally demonstrates an all-fiber conversion method that transfers the polarization-division multiplexing (PDM) signals to the mode-division multiplexing (MDM) signals. The conversion scheme is based on a mode converter and a polarization-mode controller. The input X-polarized/Y-polarized fundamental modes are converted to the first-order linear-polarized LP11A/LP11B modes with crosstalk of -10 dB/-18 dB and insertion losses of 3.04 dB/3.1 dB at 1550 nm, respectively. Using the proposed converter, 11.2 GBaud/s polarization-division-multiplexed quadrature-phase-shift keying (PDM-QPSK) and 16 quadrature-amplitude-modulation (PDM-16QAM) signals are successfully converted to 11.2 GBaud/s MDM-QPSK and MDM-16QAM signals.
本文提出并通过实验证明了一种全光纤转换方法，该方法可将偏振复用（PDM）信号转换为模式复用（MDM）信号。该转换方案基于一个模式转换器和一个偏振模式控制器。在1550nm波长下，输入的X偏振/Y偏振基模分别被转换为一阶线偏振LP11A/LP11B模式，串扰为-10dB/-18dB，插入损耗分别为3.04dB/3.1dB。使用所提出的转换器，11.2GBaud/s的偏振复用正交相移键控（PDM-QPSK）和16正交幅度调制（PDM-16QAM）信号成功转换为11.2GBaud/s的MDM-QPSK和MDM-16QAM信号。
