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Wang B, Zhang X, Tian J, Merabet B, Li Z, Shah SAA, Lei Y, Liu B, Guo K, Guo Z. Research Progress on Router Devices for the OAM Optical Communication. SENSORS (BASEL, SWITZERLAND) 2024; 24:944. [PMID: 38339661 PMCID: PMC10857600 DOI: 10.3390/s24030944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/19/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
Vortex beams carrying orbital angular momentum (OAM) provide a new degree of freedom for light waves in addition to the traditional degrees of freedom, such as intensity, phase, frequency, time, and polarization. Due to the theoretically unlimited orthogonal states, the physical dimension of OAM is capable of addressing the problem of low information capacity. With the advancement of the OAM optical communication technology, OAM router devices (OAM-RDs) have played a key role in significantly improving the flexibility and practicability of communication systems. In this review, major breakthroughs in the OAM-RDs are summarized, and the latest technological standing is examined. Additionally, a detailed account of the recent works published on techniques related to the OAM-RDs has been categorized into five areas: channel multicasting, channel switching, channel filtering, channel hopping, and channel adding/extracting. Meanwhile, the principles, research methods, advantages, and disadvantages are discussed and summarized in depth while analyzing the future development trends and prospects of the OAM-RDs.
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Affiliation(s)
- Binbin Wang
- School of Computer and Information, Hefei University of Technology, Hefei 230009, China; (B.W.); (J.T.); (B.M.); (Z.L.); (Y.L.); (B.L.); (K.G.)
- School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Xizheng Zhang
- School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China;
| | - Jinlong Tian
- School of Computer and Information, Hefei University of Technology, Hefei 230009, China; (B.W.); (J.T.); (B.M.); (Z.L.); (Y.L.); (B.L.); (K.G.)
| | - Badreddine Merabet
- School of Computer and Information, Hefei University of Technology, Hefei 230009, China; (B.W.); (J.T.); (B.M.); (Z.L.); (Y.L.); (B.L.); (K.G.)
| | - Zhixiang Li
- School of Computer and Information, Hefei University of Technology, Hefei 230009, China; (B.W.); (J.T.); (B.M.); (Z.L.); (Y.L.); (B.L.); (K.G.)
| | - Syed Afaq Ali Shah
- School of Computer and Information, Hefei University of Technology, Hefei 230009, China; (B.W.); (J.T.); (B.M.); (Z.L.); (Y.L.); (B.L.); (K.G.)
| | - Yi Lei
- School of Computer and Information, Hefei University of Technology, Hefei 230009, China; (B.W.); (J.T.); (B.M.); (Z.L.); (Y.L.); (B.L.); (K.G.)
| | - Bingyi Liu
- School of Computer and Information, Hefei University of Technology, Hefei 230009, China; (B.W.); (J.T.); (B.M.); (Z.L.); (Y.L.); (B.L.); (K.G.)
| | - Kai Guo
- School of Computer and Information, Hefei University of Technology, Hefei 230009, China; (B.W.); (J.T.); (B.M.); (Z.L.); (Y.L.); (B.L.); (K.G.)
| | - Zhongyi Guo
- School of Computer and Information, Hefei University of Technology, Hefei 230009, China; (B.W.); (J.T.); (B.M.); (Z.L.); (Y.L.); (B.L.); (K.G.)
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Liu X, Huang S, Li C. Color image information transmission based on elliptic optical vortex array encoding/decoding. OPTICS EXPRESS 2023; 31:29755-29767. [PMID: 37710769 DOI: 10.1364/oe.497808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 08/11/2023] [Indexed: 09/16/2023]
Abstract
A multichannel high-dimensional data encoding/decoding scheme based on composite elliptic optical vortex (EOV) arrays is proposed. By exploiting the rotation angle of the EOV, a 4 × 4 composite EOV array is used for high-dimensional data encoding. The conjugate symmetric extension Fourier computer-generated holography algorithm with controllable reconstruction focus is used to assign different reconstruction focus to the data of the three channels (R, G, and B) of the color image. Then, the data of the three channels is transmitted simultaneously by a single hologram to further improve the transmission efficiency. At the receiver, the initial information sequence is decoded by directly identifying the captured intensity patterns with a deep learning-based convolutional neural network. In the experiment, a 128 × 128-pixel color image is successfully transmitted, which confirms the feasibility of our proposed encoding/decoding scheme. This method has great potential for future high-capacity optical communications.
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