1-km single-mode fiber and spatial pulse compressor dispersion measurement dataset

The process of dataset generation (based on modulation phase shift method) is as follows: a tunable narrow-linewidth fiber laser outputs a continuous optical signal (carrier); The RF square wave signal output by the rubidium atomic clock signal source passes through a bandpass filter and a power divider to obtain two sine signals, one as a reference signal and the other as a measurement signal. After passing through the RF amplifier, it turns into the modulation signal (envelope).

The electro-optic intensity modulator is controlled by a STM32 microcontroller combined with a self-developed algorithm in the laboratory to achieve DC bias point control. The continuous wave sine modulated optical signal output is pre-amplified by a lab-built single clad fiber amplifier and then received by a high-speed photodetector for envelope extraction after passing through the optical component under test; The extracted envelope and reference signal are jointly input into a two-port vector network analyzer to ultimately measure the phase shift and delay. During the measurement, the frequencies of the RF sine signals (measurement signal and reference signal) are both 2 GHz.