Fig. 1. The fourier central slice theorem

Fig. 2. Filtered back projection diagram

Fig. 3. Schematic of the transmissive microinterferometric tomography system based on cylindrical objective

Fig. 4. Schematic diagram of the microscopic system

Fig. 5. Schematic of the internal structure of the cylindrical objective

Fig. 6. ZEMAX simulation results of the cylindrical objective

Fig. 7. Simulation process of optical fiber refractive index reconstruction

Fig. 8. Simulation results of optical fiber refractive index distribution

Fig. 9. Results of 2D refractive index measurement of optical fiber cross section by cylindrical objective

Fig. 10. Results of 2D refractive index measurement of optical fiber cross section by spherical objective

Fig. 11. 3D tomographic reconstruction process of MMF refractive index

Fig. 12. Refractive index distribution in cross section of MMFand SMF

Fig. 13. Measurement results of MMF refractive index distribution by cylindrical and spherical objective

Fig. 14. Measurement results of SMF refractive index distribution by cylindrical and spherical objective

Fig. 15. Schematic representation of defect distribution in the SMF