“…However, for most of the OAM beams-based interferometers reported to date, the configurations, such as MI or MZI, are of the two different paths in geometrical structure, which inevitably increase the size and complexity of measuring setup [6][7][8][9][10] . As a result, the stability of the entire measurement system would be considerably degraded, which makes the measurement results very susceptible to the external perturbations, such as the vibrations, the atmospheric turbulence, the temperature fluctuation, and the power and wavelength fluctuations in the utilized light source.…”