Fig. 1. Schematic diagram of fiber Mach-Zehnder interferometer

Fig. 2. Schematic diagram of the output end of interferometer

Fig. 3. Interference of linearly polarized Gaussian beams in the same direction. (a) Distribution of light intensity in y direction (x=0); (b) two-dimensional distribution of light intensity in xy direction

Fig. 4. Light intensity distribution of interference of two linearly polarized Gaussian beams (α-β=π/3). (a) Distribution of light intensity in y direction (x=0); (b) two-dimensional distribution of light intensity in xy direction

Fig. 5. Light intensity distribution of interference of two linearly polarized Gaussian beams (α-β=π/2). (a) Distribution of light intensity in y direction (x=0); (b) two-dimensional distribution of light intensity in xy direction

Fig. 6. Two elliptically polarized Gaussian beams with same major axis, minor axis, and ellipse orientation angle, and opposite rotation direction. (a) Distribution of light intensity in y direction (x=0); (b) two-dimensional distribution of light intensity in xy direction

Fig. 7. Two elliptically polarized Gaussian beams with different major axis, minor axis, and ellipse orientation angle. (a) Distribution of light intensity in y direction (x=0) with same rotation direction; (b) two-dimensional distribution of light intensity in xy direction with same rotation direction ; (c) distribution of light intensity in y direction (x=0) with opposite rotation direction; (d) two-dimensional distribution of light intensity in xy direction with opposite rotation direction

Fig. 8. Experiment system

Fig. 9. Interferometry fringe. (a) Interference results of Gaussian beams of same polarization state; (b) interference results of Gaussian beams of orthogonal polarization states; (c) interference results of two elliptically polarized Gaussian beams