Adaptive Transmitter Pre-Distortion Using Feedback From the Far-End Receiver

作者：Khanna Ginni^*; Spinnler Bernhard; Calabro Stefano; de Man Erik; Chen Yingkan; Hanik Norbert

来源：IEEE Photonics Technology Letters, 2018, 30(3): 223-226.

DOI：10.1109/LPT.2017.2773650

• Digital pre-distortion
• optical fiber communication
• transmitter skew
• bandwidth limitation
• automatic transmitter characterization

In recent years, digital pre-distortion has emerged as a powerful approach to compensate linear and non-linear imperfections of the transmitter. Previous solutions are either based on factory calibration or use a local auxiliary receiver. Here, we present a digital pre-distortion architecture to compensate transmitter frequency response and I/Q skew, which relies upon a feedback from the far-end receiver and uses the signal propagated over the optical link. The effectiveness of the proposed solution is validated over different transmission systems for dual-polarization 64 QAM net 400 Gb/s and 16 QAM net 200 Gb/s signals.

• 出版日期2018-2-1