Using bidirectional modulation of 2-Ch phase modulator as basis for nonlinear distortion compensation in analog photonic links

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2013,（8）
• 页码范围: 24-27
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201311.080603

摘要

We propose a third-order intermodulation distortion (IMD3) compensation scheme based on the bidirectional modulation of 2-Ch phase modulator (PM).We realize the destructive combination of IMD3 by using different modulation efficiencies and appropriately adjusting the input optical power ratio to satisfy a fixed relationship with modulation efficiency.The primary advantage of this scheme is that out-of-phase IMD3 is introduced using only one 2-Ch PM,thereby resulting in the cancellation of IMD3.Up to 27-dB suppression in IMD3 is experimentally demonstrated-a feature that will be useful in low-distortion analog optical transmission.