Article
Optics
Yi Qin, Yuhong Wan, Qiong Gong, Minghua Zhang
Summary: In this paper, a novel optical compressive encryption approach based on deep learning and space multiplexing is proposed. The plaintexts are transformed into scattering images with noise appearances using scattering-imaging-based encryption scheme, and then randomly sampled and integrated into a ciphertext by space multiplexing. The decryption process involves an ill-posed problem, which can be well resolved by deep learning. Experimental results confirm the effectiveness and feasibility of the proposal.
Article
Computer Science, Software Engineering
Pengfei Fang, Han Liu, Chengmao Wu, Min Liu
Summary: This paper first summarizes the development of current image encryption algorithms, then analyzes the advantages, disadvantages, and latest achievements of image encryption algorithms based on chaotic systems, and discusses future research directions and development trends.
Article
Chemistry, Analytical
Muhammad Hanif, Nadeem Iqbal, Fida Ur Rahman, Muhammad Adnan Khan, Taher M. Ghazal, Sagheer Abbas, Munir Ahmad, Hussam Al Hamadi, Chan Yeob Yeun
Summary: This study presents an image encryption scheme based on block-level scrambling, which improves the encryption speed compared to pixel-level operations. Chaotic data streams are generated using the intertwining logistic map, and random numbers are utilized for block swapping and XOR operations. The proposed scheme outperforms many published works in terms of computational time and throughput, showing great potential for real-world application.
Article
Computer Science, Information Systems
Huawei Tong, Tianyou Li, Youyun Xu, Xinzhong Su, Guopeng Qiao
Summary: It is important to ensure the security of communication networks and information. Balancing simplicity and complexity is crucial to improve the effectiveness of schemes in various application scenarios. Current research on the security of digital images and protection of sensitive data can still be further improved. This paper proposes a color image encryption method using the Chaotic Coyote Optimization Algorithm to minimize the correlation between adjacent pixels in the cipher image. It also presents a color image steganography scheme that defends against common image attacks.
MULTIMEDIA TOOLS AND APPLICATIONS
(2023)
Article
Optics
Praveen Kumar, Naveen K. Nishchal, Ayman Alfalou
Summary: A color image encryption scheme is proposed in this study, utilizing the spatially varying polarization states of vector light fields to achieve higher degrees of freedom. This scheme provides strong security and a straightforward way for optical implementation. Simulation and experimental results have been presented to verify the feasibility of the proposed scheme.
Review
Optics
Abdurrahman Hazer, Remzi Yildirim
Summary: This study provides a detailed analysis of optical encryption methods, divided into single-image optical encryption and multiple-image optical encryption, including various techniques and methods.
Article
Engineering, Electrical & Electronic
Suo Gao, Rui Wu, Xingyuan Wang, Jiafeng Liu, Qi Li, Chunpeng Wang, Xianglong Tang
Summary: An asynchronous updating Boolean network is used to simulate and analyze gene expression, revealing the life activity process and disease mechanism. To ensure secure transmission, an encryption algorithm based on chaos is designed, using a novel chaotic system and encoding rule. The method of synchronous scrambling-diffusion is adapted for encryption. Simulation experiments show good security characteristics with low correlation and high information entropy.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY
(2023)
Article
Optics
Bassem Abd-El-Atty, Abdullah M. Iliyasu, Ahmad Alanezi, Ahmed A. Abd El-latif
Summary: This paper proposes a new optical encryption approach based on quantum walks and double random phase encoding technique, utilizing alternate quantum walks and random phase encoding for encryption. Simulation-based validation shows feasibility of the proposed technique through analysis of correlation, histogram, sensitivity, key space, noise, and data loss.
OPTICS AND LASERS IN ENGINEERING
(2021)
Article
Optics
Junhao Zhang, Dongyu Yang, Rui Ma, Yishi Shi
Summary: This article introduces a multi-slice ptychographic encoding method for encrypting multiple and color images, achieving high-quality decryption and high security and robustness against noise, compression, and occlusion.
OPTICS COMMUNICATIONS
(2021)
Article
Optics
Carlos Vargas-Castrillon, Alejandro Velez-Zea, John Fredy Barrera-Ramirez
Summary: In this letter, we propose an opto-digital cryptosystem based on the joint transform correlator architecture that eliminates the need for a reference beam, phase-shifting techniques, or an additional window in the input plane. The system only requires two intensity recordings: the intensity of the key Fourier transform and the joint power spectrum between the key and an arbitrary object with a random phase mask. By combining these recordings with the knowledge of their respective input modules, we use a modified Gerch-berg-Saxton algorithm to recover the phase associated with the encryption key. Computer simulations and experimental results demonstrate the validity of our approach.
Article
Mathematics
Hanshuo Qiu, Xiangzi Zhang, Huaixiao Yue, Jizhao Liu
Summary: This paper proposes an encryption scheme based on an eighth-order hyperchaotic system, which offers a large key space and can resist various attacks, demonstrating excellent security performance.
Article
Optics
Fan Wang, Renjie Ni, Jun Wang, Zheng Zhu, Yuhen Hu
Summary: This paper proposes an invertible encryption network (IENet) for optical image cryptosystem, which applies a novel learning way to optical image encryption for the first time and achieves high security. The effectiveness and superiority of the proposed encryption method are verified by simulation and experiment results, providing a new approach and perspective for learning-based encryption research.
OPTICS AND LASERS IN ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Nianqiao Li, Fei Yan
Summary: This study proposes a single-qubit-based color model for efficient image processing and encryption, enhancing security and efficiency.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Optics
Patnala Vanitha, Bhargavi Manupati, Inbarasan Muniraj, Satish Anamalamudi, Gangi Reddy Salla, R. P. Singh
Summary: This paper presents a Physically Unclonable Function (PUF) based on scattered optical vortices for generating robust encryption keys for optical encoding systems. The proposed key generation method is validated as an effective alternative to digital encryption keys.
APPLIED PHYSICS B-LASERS AND OPTICS
(2022)
Article
Engineering, Electrical & Electronic
Heping Wen, Jiahao Wu, Linchao Ma, Zhen Liu, Yiting Lin, Limengnan Zhou, Huilin Jian, Wenxing Lin, Linhao Liu, Tianle Zheng, Chongfu Zhang
Summary: This paper proposes a hybrid encryption scheme for color images in the frequency and spatial domains based on double random transform and memristor hyperchaotic system. The scheme encrypts the color image through frequency and spatial transformations, and introduces a dynamic key to effectively resist plain attacks. Experimental results demonstrate that the scheme has a large key space, excellent comprehensive performance, and can resist common attacks.
IEEE PHOTONICS JOURNAL
(2023)
Article
Optics
Hang Dong, Zhixin Sun, Jingyi Li, Yahui Li, Wei Zhang, Guangyong Jin
Summary: This paper calculates thermal stresses and adsorption forces to determine laser cleaning conditions and establishes relevant models. Experimental results show that the removal effect is better with increasing nanosecond pulse delay, with the best effect achieved at 600 milliseconds pulse delay. Based on the findings, the mechanisms of oxide film removal involve thermal stress against adsorption and plasma shock wave breaking the oxide layer.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Junjie Zhang, Wenjun Li, Bingtao Li, Zheng-Da Hu, Jicheng Wang, Feng Zhang, Lei Wang
Summary: A multilayer thin film device structure based on Tamm plasmons is proposed for high-performance near-infrared hot electron photodetectors. By optimizing the device structure parameters, high responsivity detection can be achieved.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hong Huang, Zhiguang Han
Summary: This paper proposes a new ghost imaging reconstruction method using ordered orthogonal Hadamard derived speckle as the illumination speckle series, and introduces the alternating direction multiplier method to improve the imaging performance. The evaluation results show that the method can achieve high-quality reconstructed images under low sampling conditions.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Moritsugu Sakamoto, Yuki Ono, Kohei Noda, Tomoyuki Sasaki, Nobuhiro Kawatsuki, Masayuki Tanaka, Hiroshi Ono
Summary: The effect of wavelength and polarization of illuminating light in polarization imaging for birefringent objects placed behind a scattering structure was experimentally investigated. The result shows that the spatial distribution of the birefringent object was more clearly visualized in the longer wavelength combined with circularly polarized light illumination. This finding indicates the potential of using polarization imaging with circularly polarized light illumination in the near-infrared range for visualizing birefringent objects with scattering.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Peihui Du, Hongfang Wang, Pengwei Li, Rukeyemuhan Abadula, Hmbat Batelbek, Min Gao
Summary: In this study, we theoretically demonstrate the strong coupling between Tamm plasmons and exciton polaritons in metal Al/DBR-molecular structures, extending the operating wavelength to the deep ultraviolet region. The coupling strength can be effectively manipulated by adjusting the structure parameters, offering potential benefits for the development of new-style optical filters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Priyanka Chaudhary, Akhilesh Kumar Mishra
Summary: We design and numerically investigate the switching dynamics between two outer waveguides in a parity-time (PT)-symmetric adiabatically coupled three waveguides nonlinear directional coupler (NLDC) system. The study shows that the device can provide switching even when the middle waveguide is nonlinear and the outer waveguides are linear. Furthermore, the effect of loss to gain ratio on critical switching power and the impact of launched light power and gain (loss) value on transmitted power are also studied.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Wei Feng, Yongcong Yi, Shuyang Li, Zhi Xiong, Boya Xie, Zhen Zeng
Summary: Traditional imaging techniques are ineffective in achieving clear underwater imaging due to the presence of scattering media. Single-pixel imaging (SPI) system based on Unet++ offers a solution for reconstructing high-quality images in highly turbid water environments.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiaorui Qu, Jufeng Zhao, Haijun Tian, Junjie Zhu, Guangmang Cui
Summary: This paper studies the structural similarity between RGB and spectral images and proposes a non-iterative Images Structure Similarity (ISS) method for fast reconstruction of spectral images. Additionally, the input of the Deep Image Prior (DIP) method is optimized for the first time by using the initial spectral data reconstructed by ISS, leading to an improved starting value for the iteration. The experimental results show that the proposed method can enhance the reconstruction quality in both spectral and spatial resolutions, while significantly reducing the reconstruction time compared to other DIP-based methods.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Donghe Sheng, Zhe Han, Zanyang Qiao, Tianpei Dong, Chenxi Wang, Huiping Tian
Summary: In this study, a distributed multi-parameter sensor based on an etched few-mode multi-core fiber is proposed, allowing simultaneous sensing of temperature, strain, and sample refractive index. By combining space division multiplexing and stimulated Brillouin scattering, the sensor achieves high sensitivity in detecting these parameters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Dehao Chen, Zhenwu Mo, Zehong Liang, Junjie Jiang, Huilin Tang, Yidan Sun, Ziyu Wang, Quanfeng Wei, Yanru Chen, Dongmei Deng
Summary: In this study, a novel family of elliptical Airyprime vortex beams (EAPVBs) is introduced, which inherits the excellent self-focusing properties of the circular Airyprime vortex beam (CAPVB). The asymmetric focusing of EAPVB leads to some novel properties, such as the splitting of high-order optical vortex and the formation of two foci. By taking advantage of these properties, EAPVB is constructed as a tunable optical bottle for particle capture.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiao Ma, Qiongchan Shao, Jian-Jun He
Summary: In this study, an SHS chip based on Su8 waveguide was designed and fabricated. By physically adjusting the metal electrodes and compensating for transmissivity fluctuations, the generation of side ripples was successfully suppressed.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hongbin Zhang, Jiansen Du, Zongtao Chi, Hailin Cong, Bin Wang
Summary: In this paper, a novel type of dual-wavelength confocal metalens is proposed to solve the spatial crosstalk between two wavelengths. The metalens can greatly reduce the spatial crosstalk and achieve high precision and efficiency in confocal imaging. It can also focus light in specific wavelength ranges, making it suitable for imaging, microscopy, and optical fiber communication.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Rui Qiu, Guanmao Zhang, Shaokai Du, Jie Liu, Hongyu Jib, Kaiyun Bi, Bochuan Xing, Guangchao Diao
Summary: Recent research has developed an achromatic metalens that shows potential for replacing traditional lenses. This study focuses on a continuously variable focus height broadband achromatic metalens for long-wavelength infrared applications. By optimizing materials and parameters, chromatic aberration is effectively corrected, making it suitable for high-resolution LWIR imaging and spectroscopy systems.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Marcos Troncoso-Costas, Gaurav Jain, Yiming Li, Mohammed Patel, Lakshmi Narayanan Venkatasubramani, Sean O'Duill, Frank Smyth, Andrew Ellis, Francisco Diaz-Otero, Colm Browning, Liam Barry
Summary: In this work, a fast-switching tuneable laser capable of wide wavelength coverage, low noise and linewidth levels suitable for high-order modulation formats is demonstrated. The laser is characterized to cover a wavelength range of 35 nm in the C-band with nanosecond switching time. It is used to successfully demonstrate 480 Gbit/s 16QAM transmission over 25 km of single-mode fiber for a wavelength range of 19 nm.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Takeshi Moriyasu, Masahiko Tani, Hideaki Kitahara, Takashi Furuya, Jessica Afalla, Toshiro Kohmoto, Daishiro Koide, Hiroki Sato, Mitsutaka Kumakura
Summary: Optical pump-terahertz probe spectroscopy was used to study the photocarrier dynamics and optical characteristics of semiconductor Si. The results showed that the thickness of Si influenced the transmitted terahertz field amplitude and peak delay time, indicating differences in photocarrier dynamics between different Si materials.
OPTICS COMMUNICATIONS
(2024)