Abstract

Based on a parallel phase compensation scheme, we propose an efficient wavefront shaping method using a spatial light modulator (SLM) for quickly generating a series of focused spots through a multimode fiber (MMF). The compensated phase mask obtained by a two-step phase-shifting technique is loaded to the SLM for generating a focused spot at an arbitrary target position out of the fiber facet. Furthermore, the parallel algorithm we present makes it possible to obtain a series of compensated phase masks, which could be used to generate a series of focused spots at different locations. We experimentally obtained 100 tightly focused spots, with an average focused efficiency of 21.60% and an average focused diameter of 1.9240 μm, and only one-time parallel-compensated phase retrieval is required without multiple iteration optimization.

© 2019 Optical Society of America

Fast compensation for arbitrary focusing through scattering media

Li Zhan, Dean Liu, Aihua Yang, Jie Miao, and Jianqiang Zhu
Appl. Opt. 58(10) 2624-2629 (2019)

Compensation algorithm for the phase-shift error of polarization-based parallel two-step phase-shifting digital holography

Tatsuki Tahara, Kenichi Ito, Takashi Kakue, Motofumi Fujii, Yuki Shimozato, Yasuhiro Awatsuji, Kenzo Nishio, Shogo Ura, Toshihiro Kubota, and Osamu Matoba
Appl. Opt. 50(7) B31-B37 (2011)

Bayes’ theorem-based binary algorithm for fast reference-less calibration of a multimode fiber

Tianrui Zhao, Liang Deng, Wen Wang, Daniel S. Elson, and Lei Su
Opt. Express 26(16) 20368-20378 (2018)

Parallel two-step phase-shifting digital holography

Yasuhiro Awatsuji, Tatsuki Tahara, Atsushi Kaneko, Takamasa Koyama, Kenzo Nishio, Shogo Ura, Toshihiro Kubota, and Osamu Matoba
Appl. Opt. 47(19) D183-D189 (2008)

Structured light beams created through a multimode fiber via virtual Fourier filtering based on digital optical phase conjugation

Chaojie Ma, Jianglei Di, Jiazhen Dou, Peng Li, Fajun Xiao, Kaihui Liu, Xuedong Bai, and Jianlin Zhao
Appl. Opt. 59(3) 701-705 (2020)