Zhigang Han, Junbo Li, Siliang Liu, Fangxin Li, Zhenying Yang, Qi Wang, Jiuduo Rui, Hua Shen, Rihong Zhu, "Simultaneous determination of polarization states and mode coefficients of fiber LP modes with four-channel off-axis holography," Chin. Opt. Lett. 21, 120601 (2023)
- Chinese Optics Letters
- Vol. 21, Issue 12, 120601 (2023)
Fig. 1. Superposition of polarization-degenerate modes (blue frame) in the same spatial distribution.
Fig. 2. Setup with four-channel off-axis holography.
Fig. 3. Simulation process.
Fig. 4. Parameter of vectorial laser and light intensity distribution. (a) Mode coefficient set in the simulation; (b) set values of the mode polarization states; (c) intensity of the test light; (d) intensity of the reference light.
Fig. 5. Off-axis hologram of 0° channel and its demodulation results. (a) Off-axis hologram; (b) local spectral distribution; (c) demodulation results of the light intensity; (d) demodulation results of the phase distribution.
Fig. 6. Light intensity distribution in the conjugated position of the fiber end and its MD reconstruction in the 0° channel. (a) Light intensity after virtual transmission; (b) MD coefficients; (c) reconstruction by MD.
Fig. 7. Simulation results of mode analysis. (a) Mode weights; (b) relative phase differences; (c) mode polarization states; (d) reconstruction after mode analysis.
Fig. 8. Experimental setup.
Fig. 9. Reference light intensity on each channel and its DOLP distribution. (a)–(d) Intensity of the reference light on different channels; (e) DOLP distribution of the reference light.
Fig. 10. Holograms in each channel and its demodulation results. (a)–(d) Holograms; (e)–(h) demodulation results of the intensity; (i)–(l) demodulation results of the phase.
Fig. 11. Mode analysis results. (a) Reconstruction by MD; (b) reconstruction by mode analysis; (c) mode coefficients; (d) polarization states.
Fig. 12. Similarities of different MD calculations.
Fig. 13. Mode analysis results based on the reference light on different polarization states. (a) Elliptic polarization; (b) linear polarization; (c) polarization analysis results based on the reference light on different polarization states.
Fig. 14. Effects of the remaining tilt and defocus aberrations on mode analysis.
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20