A modulation scheme for 100 Gb/s modified minimum-shift keying format based on imbalanced bias in IQ components

作者：Tao, Li; Zhu, Jiangbo; Huang, Bo; Zhang, Junwen; Shao, Yufeng; Chi, Nan^*

来源：Optical Fiber Technology, 2011, 17(6): 601-607.

DOI：10.1016/j.yofte.2011.08.004

• Optical MSK signal
• Modulation scheme
• Bias

We propose a modified minimum-shift keying (MSK) modulation scheme by applying the imbalanced bias on the in-phase and quadrature components of a MZM-based MSK modulator. This scheme enables constant envelope and continuous temporal phase shift of 100 Gb/s optical MSK signal by driving the MZMs with traditional sinusoidal signal instead of triangle signal. The principle of generating the optical MSK signal by this imbalanced scheme is presented. Theoretical analysis is given to modulated spectra, BER performance, residual dispersion tolerance and SPM tolerance. It is demonstrated that compared to the existing solutions the proposed scheme is able to decrease 2 dB receiver power penalty and improve SPM tolerance by 2 dB.

• 出版日期2011-12
• 单位华中科技大学; 专用集成电路与系统国家重点实验室; 复旦大学