Kikuchi Kazuro
Opt Express. 2020 Aug 31;28(18):26007-26017. doi: 10.1364/OE.399814.
This study analyzes the bit-error-rate characteristics of Stokes-vector modulation-demodulation systems employing optically preamplified receivers. We derive unified analytical formulae for the bit-error rate of binary, quad, and octal modulation formats, in which Stokes vectors are modulated in a binary manner per dimension. The receiver sensitivities estimated from the derived bit-error-rate formulae are examined by analyzing the probability-density function of noise in the Stokes-vector direct-detection receiver. In addition, the bit-error-rate formulae enable a comprehensive comparison of the sensitivity among various optical receivers, such as coherent, direct-detection, optically differential direct-detection, and Stokes-vector direct-detection receivers.
本研究分析了采用光前置放大接收机的斯托克斯矢量调制解调系统的误码率特性。我们推导了二进制、四进制和八进制调制格式误码率的统一解析公式，其中斯托克斯矢量在每个维度上以二进制方式进行调制。通过分析斯托克斯矢量直接检测接收机中噪声的概率密度函数，研究了从推导的误码率公式估计出的接收机灵敏度。此外，这些误码率公式能够对各种光接收机（如实相干接收机、直接检测接收机、光差分直接检测接收机和斯托克斯矢量直接检测接收机）之间的灵敏度进行全面比较。
