Reconfigurable structured light generation and its coupling to air–core fiber

Yize Liang; Hongya Wang; Xi Zhang; Jianzhou Ai; Zelin Ma; Siddharth Ramachandran; Jian Wang

doi:10.1117/1.APN.2.3.036015

Journals >Advanced Photonics Nexus >Volume 2 >Issue 3 >Page 036015 > Article

Advanced Photonics Nexus
Vol. 2, Issue 3, 036015 (2023)

Reconfigurable structured light generation and its coupling to air–core fiber

Yize Liang^1、2、3, Hongya Wang^1、2、3, Xi Zhang^1、2、3, Jianzhou Ai^1、2、3, Zelin Ma⁴, Siddharth Ramachandran⁴, and Jian Wang^{1、2、3、*}

Author Affiliations

¹Huazhong University of Science and Technology, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Wuhan, China

²Optics Valley Laboratory, Wuhan, China

³Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, China

⁴Boston University, College of Engineering, Boston, Massachusetts, United States

show less

DOI: 10.1117/1.APN.2.3.036015 Cite this Article Set citation alerts

Yize Liang, Hongya Wang, Xi Zhang, Jianzhou Ai, Zelin Ma, Siddharth Ramachandran, Jian Wang. Reconfigurable structured light generation and its coupling to air–core fiber[J]. Advanced Photonics Nexus, 2023, 2(3): 036015 Copy Citation Text

EndNote(RIS)

BibTex

Plain Text

show less

(a) Concept of reconfigurable structured light beams generator employing a single SLM loop. (b) HOPS with l=1. (c) Overlapping degree between polarization distributions of vector beams in initial frames and vector beams in subsequent frames. (d) Experimental setup of reconfigurable structured light beams generator and fiber-coupling system. PC, polarization controller; Col, collimator; BS, beam splitter; PBS, polarization beam splitter; HWP, half-wave plate; QWP, quarter-wave plate; OL, objective lens; CCD, charge-coupled device (Video 1, mp4, 12.2 MB [URL: https://doi.org/10.1117/1.APN.2.3.036015.s1; Video 2, mp4, 12.1 MB [URL: https://doi.org/10.1117/1.APN.2.3.036015.s2).

Fig. 1. (a) Concept of reconfigurable structured light beams generator employing a single SLM loop. (b) HOPS with

l = 1

. (c) Overlapping degree between polarization distributions of vector beams in initial frames and vector beams in subsequent frames. (d) Experimental setup of reconfigurable structured light beams generator and fiber-coupling system. PC, polarization controller; Col, collimator; BS, beam splitter; PBS, polarization beam splitter; HWP, half-wave plate; QWP, quarter-wave plate; OL, objective lens; CCD, charge-coupled device (Video 1, mp4, 12.2 MB [URL: https://doi.org/10.1117/1.APN.2.3.036015.s1; Video 2, mp4, 12.1 MB [URL: https://doi.org/10.1117/1.APN.2.3.036015.s2).

Download full size | View in the Article

Fig. 2. Polarization reconstruction of cylindrical vector beams. Measured intensity profiles of a vector beam with mode order

l = 1

after propagating through (a) an

x

-polarized polarizer; (b) a

y

-polarized polarizer; (c) a

+ 45 \deg

directional QWP and an

x

-polarized polarizer; (d) a

+ 45 \deg

polarizer; (e) a

- 45 \deg

polarizer; (f) a

+ 45 \deg

directional QWP and a

y

-polarized polarizer; (g) intensity profile and polarization distribution of the vector beam with mode order

l = 1

. Measured intensity profiles of a vector beam with mode order

l = 10

after propagating through (h) an

x

-polarized polarizer; (i) a

y

-polarized polarizer; (j) a

+ 45 \deg

directional QWP and an

x

-polarized polarizer; (k) a

+ 45 \deg

polarizer; (l) a

- 45 \deg

polarizer; (m) a

+ 45 \deg

directional QWP and a

y

-polarized polarizer; (n) intensity profile and polarization distribution of the vector beam with mode order

l = 10

Download full size | View in the Article

Fig. 3. Intensity profiles and polarization distributions of diverse seventh-order structured light beams generated in free space. (a), (b)

x

-polarized OAM beams, insets are interference intensity profiles of them. (c), (d)

x

-polarized LP beams. (e), (f) Circularly polarized OAM beams, insets are interference intensity profiles of them. (g), (h) Vector beams. (i)–(l) Four different vector beams; insets are intensity profiles of vector beams passing through different directional polarizers.

Download full size | View in the Article

Fig. 4. Coupling losses of the fourth to seventh OAM and vector beams. RCP, right circular polarization; LCP, left circular polarization; and XP,

x

polarization.

Download full size | View in the Article

Fig. 5. Diverse seventh-order structured light beams after 5-m air–core fiber transmission, insets above figures (a)–(d) are their interference intensity profiles, respectively. (a), (b)