TY - JOUR
T1 - Physically-Secured Ghost Diffraction and Transmission
AU - Cao, Yonggui
AU - Xiao, Yin
AU - Pan, Zilan
AU - Zhou, Lina
AU - Chen, Wen
N1 - This work was supported in part by the Guangdong Basic and Applied Basic Research Foundation under Grant 2022A1515011858, in part by the Hong Kong Research Grants Council under Grant C5011-19G and Grant 15224921, and in part by The Hong Kong Polytechnic University under Grant 1-W19E and Grant 1-BD4Q.
Publisher Copyright:
© 1989-2012 IEEE.
PY - 2022/11/15
Y1 - 2022/11/15
N2 - A new approach to realizing physically-secured ghost diffraction and transmission is proposed in this letter. A series of random 2D arrays of numbers are used as optical information carriers to transmit original data, e.g., analog signals or images as ghosts. Computer-generated magnification factors are applied for optical data encoding, and physically-generated scaling factors are generated with absorptive filters in free-space optical data transmission. The series of computer-generated magnification factors and physically-generated scaling factors serves as security keys, and is explored to realize high-fidelity and high-security free-space optical data (ghost) transmission. It is experimentally demonstrated that the proposed method is feasible and effective in different environments, i.e., without or with scattering media. The proposed physically-secured ghost diffraction scheme offers a new research perspective on secured optical information (e.g., analog signal) transmission in free space.
AB - A new approach to realizing physically-secured ghost diffraction and transmission is proposed in this letter. A series of random 2D arrays of numbers are used as optical information carriers to transmit original data, e.g., analog signals or images as ghosts. Computer-generated magnification factors are applied for optical data encoding, and physically-generated scaling factors are generated with absorptive filters in free-space optical data transmission. The series of computer-generated magnification factors and physically-generated scaling factors serves as security keys, and is explored to realize high-fidelity and high-security free-space optical data (ghost) transmission. It is experimentally demonstrated that the proposed method is feasible and effective in different environments, i.e., without or with scattering media. The proposed physically-secured ghost diffraction scheme offers a new research perspective on secured optical information (e.g., analog signal) transmission in free space.
KW - free space
KW - optical analog-signal transmission
KW - Optical encoding
KW - physical-layer security
KW - scattering media
UR - http://www.scopus.com/inward/record.url?scp=85139523074&partnerID=8YFLogxK
U2 - 10.1109/LPT.2022.3210026
DO - 10.1109/LPT.2022.3210026
M3 - Journal article
AN - SCOPUS:85139523074
SN - 1041-1135
VL - 34
SP - 1238
EP - 1241
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 22
ER -