关键词: 光调制, 眼图, 光接收机, 校准模块

Abstract: A new design method of optical signal eye pattern calibration module is introduced.The parameters of eye diagram measurement,the design principle of eye diagram calibration module and the selection idea of test device are given.The factors such as the output power of tunable laser,polarization direction,optical modulation and startup,the error introduced by microwave amplifier,and the jitter and time base error of the tested equipment are fully considered.Through the rise time test and Jitter Test,the influence of the bandwidth and jitter of optical receiver on the standard eye diagram is analyzed,Finally,the experimental results are given,and the relationships between the optical signal eye height,eye width,extinction ratio,optical modulation amplitude,jitter and the parameters of code rate,code length and bit error rate are analyzed.

Key words: Optical modulation, Eye diagram, Optical receiver, Calibrate module