National Laboratory of Photonic Networks, Consorzio Nazionale Interuniversitario per le Telecomunicazioni, Pisa, Italy.
Opt Lett. 2012 Sep 15;37(18):3831-3. doi: 10.1364/ol.37.003831.
A colorless all-optical scheme performing the subtraction and addition of phases between phase-shift keying (PSK) signals exploiting cascaded sum and difference frequency generation in a periodically poled lithium niobate waveguide is introduced and experimentally demonstrated. The subtraction of phases of two 40 Gb/s differential quadrature PSK signals has been experimentally tested and performances have been analyzed in terms of bit error rate measurements.
介绍并实验演示了一种基于级联和频差频产生的、在周期性极化铌酸锂波导中实现相移键控（PSK）信号之间相位相减和相加的无色全光方案。实验测试了两个 40 Gb/s 差分正交 PSK 信号的相位相减，并从误码率测量的角度分析了其性能。
