A Carrier Suppressed Single Sideband(CS-SSB) modulation decoupling control technique based on Dual Parallel Mach-Zehnder Modulator (DPMZM) is proposed to solve the problem that the bias point of the DPMZM leads to the degradation of the modulation signal under the influence of ambient temperature, fiber coupling loss or other factors. This technique introduces three non-disturbing dithering voltages at the bias end of the modulator and detects the power ratio of the optical signal at the output end to realize CS-SSB modulation. Experimental results show that the proposed technique can effectively stabilize Optical Sideband Suppression Ratio(OSSR) above 24dB. This letter also proves that this technique is feasible for other modulators and has great practical value in the microwave photonic system.

中文翻译：

---

双并行Mach-Zehnder调制器的一种新型去耦偏置控制技术

为解决DPMZM的偏置点导致调制信号质量下降的问题，提出了一种基于双并行马赫-曾德尔调制器(DPMZM)的载波抑制单边带(CS-SSB)调制解耦控制技术。环境温度、光纤耦合损耗或其他因素。该技术在调制器偏置端引入三个无干扰的抖动电压，在输出端检测光信号的功率比，实现CS-SSB调制。实验结果表明，所提出的技术可以有效地将光边带抑制比（OSSR）稳定在24dB以上。这封信也证明了该技术对于其他调制器是可行的，在微波光子系统中具有很大的实用价值。