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Double random phase encoding schemes with perfect forward secrecy for robust image cryptography 鲁棒图像密码学中具有完全前向保密性的双随机相位编码方案
IF 1.6
OSA Continuum Pub Date : 2021-08-15 DOI: 10.1364/osac.426537
Inkyu Moon, Youhyun Kim, Samaneh Gholami, Ongee Jeong
{"title":"Double random phase encoding schemes with perfect forward secrecy for robust image cryptography","authors":"Inkyu Moon, Youhyun Kim, Samaneh Gholami, Ongee Jeong","doi":"10.1364/osac.426537","DOIUrl":"https://doi.org/10.1364/osac.426537","url":null,"abstract":"Digital cryptosystems can provide perfect forward secrecy (PFS) for key exchange protocols based on the Diffie–Hellman (DH) scheme. However, key exchange algorithms are optimally designed only to encode small datasets, such as text and voice sets, which makes rapidly processing large-scale datasets difficult. In this paper, we propose new schemes that can efficiently and securely provide PFS in double random phase encoding (DRPE) schemes for robust image cryptography. We demonstrate that the proposed complex sinusoidal waveform versions of the DH algorithm with fusion of a random phase mask (RPM) and ephemeral secret exponents can guarantee PFS. Different experimental results reveal that the proposed schemes can enhance the security of DRPE-based image cryptosystems using a one-time RPM and PFS. We also propose a ring-type PFS scheme in which an unlimited number of users can securely share a temporary session key, which is an extension of PFS for only two users. We provide formal proof for the schemes and prove feasibility through numerical simulations.","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44004825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single-layer Wideband Reflectarray with dual-polarization for multiple OAM beams 用于多OAM波束的单层双偏振宽带反射阵
IF 1.6
OSA Continuum Pub Date : 2021-08-15 DOI: 10.1364/OSAC.427110
Hui-fen Huang, Shuhui Xie
{"title":"Single-layer Wideband Reflectarray with dual-polarization for multiple OAM beams","authors":"Hui-fen Huang, Shuhui Xie","doi":"10.1364/OSAC.427110","DOIUrl":"https://doi.org/10.1364/OSAC.427110","url":null,"abstract":"In this paper, a single-layer wideband dual-linearly polarized reflective element is developed operating from 13GHz to 15.5GHz. The developed reflective metasurface can produce orbital angular momentum (OAM) vortex waves with required modes, beam numbers, direction, x-, y- or both x- and -y polarizations. To demonstrate this versatility, three reflectarrays with multiple modes, multiple beams, and both x- and -y polarizations are designed, and one is fabricated and measured to validate the design. The measured peak gain, aperture efficiency, divergence angle is 19dBi, 11.54%, 6°, respectively. The designed reflectarray has potential applications for high communication rate.","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44180595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Bin-Packing Based Offline Dynamic Bandwidth and Wavelength Allocation Algorithms for Power Efficiency in Super-PON 基于装箱的超级PON离线动态带宽和波长分配算法
IF 1.6
OSA Continuum Pub Date : 2021-08-15 DOI: 10.1364/OSAC.430997
Sukriti Garg, A. Dixit
{"title":"Bin-Packing Based Offline Dynamic Bandwidth and Wavelength Allocation Algorithms for Power Efficiency in Super-PON","authors":"Sukriti Garg, A. Dixit","doi":"10.1364/OSAC.430997","DOIUrl":"https://doi.org/10.1364/OSAC.430997","url":null,"abstract":"Enduring the rapidly growing demand for high data rates is the main challenge for the current network providers. Super passive optical network (Super-PON), a prominent next generation Ethernet PON (NG-EPON) candidate, can suffice this exponentially increasing data rate requirements. However, to appease such requirements, it employs many transceivers and increases the power-consumption of the network. In this work, we focus on reducing the carbon footprint of Super-PON and propose power-efficient dynamic bandwidth and wavelength allocation (DBWA) algorithms, namely best fit bin-packing sleep mode aware (BF-SMA) and updated BF-SMA (UBF-SMA). The proposed algorithms use SMA for bandwidth scheduling and different bin-packing techniques for wavelength allocation. In bin-packing, the number of available wavelengths and their efficient allocation is based on the network load. For restricting the number of available wavelengths, we can switch off the non-essential transceivers at the OLT, which also helps in maximizing the wavelength utilization and increasing the power efficiency. The simulation results show that in comparison to the state-of-the-art DBWA algorithms, the proposed algorithms improve the power efficiency and reduce the average delay of a Super-PON system. Furthermore, we use Jain’s fairness index to validate the fairness of the proposed DBWA algorithms.","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48392083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Detection of Hemoglobin in Blood and UrineGlucose level samples using Graphene-coated SPR based Bio-sensor 基于石墨烯包覆SPR的生物传感器检测血液和尿液中的血红蛋白和血糖水平
IF 1.6
OSA Continuum Pub Date : 2021-08-15 DOI: 10.1364/OSAC.433633
Shahriar Mostufa, A. Paul, K. Chakrabarti
{"title":"Detection of Hemoglobin in Blood and UrineGlucose level samples using Graphene-coated SPR based Bio-sensor","authors":"Shahriar Mostufa, A. Paul, K. Chakrabarti","doi":"10.1364/OSAC.433633","DOIUrl":"https://doi.org/10.1364/OSAC.433633","url":null,"abstract":"In this paper, we have presented a design and simulation of a graphene-coated surface plasmon resonance (SPR) based biosensor for targeting specific biological components. We have explicitly shown the detection of the hemoglobin level in blood samples and the glucose concentration level in urine samples by using the finite element method (FEM) based numerical simulation. In the blood component, the 0.001 refractive index increment causes a 6.1025 g/l hemoglobin (HB) level increment, which has been detected using this SPR based sensor with 200 deg/RIU angular sensitivity. Moreover, we have also detected the presence or absence of diabetes using the glucose concentration level in urine samples with this SPR sensor. Therefore, the novelty of this paper is detecting the blood hemoglobin level and glucose concentration levels in urine samples more accurately than the previously proposed whispering gallery mode (WGM) and photonic crystal nanocavity based optical sensors.","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43994358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 34
Beam shape modification due to the non-linear optical response in a dense rubidium vapor 稠密铷蒸气中非线性光学响应引起的光束形状变化
IF 1.6
OSA Continuum Pub Date : 2021-08-15 DOI: 10.1364/osac.432780
A. J. van Lange, S. P. van Solinge, G. Buist, D. van Oosten
{"title":"Beam shape modification due to the non-linear optical response in a dense rubidium vapor","authors":"A. J. van Lange, S. P. van Solinge, G. Buist, D. van Oosten","doi":"10.1364/osac.432780","DOIUrl":"https://doi.org/10.1364/osac.432780","url":null,"abstract":"Dense atomic vapors have strong non-linear optical properties for near-resonant light. As a result, an initially Gaussian beam profile is strongly distorted due to propagation through such a dense vapor, leading to various distinct beam profiles. In our experiment, we track the detuning from resonance at which these beam profiles occur as a function of intensity. We establish a detuning curve as a function of intensity for each shape at two different cell temperatures. After proper scaling, the detuning curves all collapse onto one universal detuning curve, which suggests that the shapes are manifestations of the same underlying phenomenon.","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48272541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
155 μm highly stable noise-like pulse fiber laser usingnon-PM fiber 155μm高稳定噪声类脉冲光纤激光器
IF 1.6
OSA Continuum Pub Date : 2021-08-13 DOI: 10.1364/osac.434640
Makoto Miyazaki, M. Yoshida, Shota Sekiguchi
{"title":"155 μm highly stable noise-like pulse fiber laser usingnon-PM fiber","authors":"Makoto Miyazaki, M. Yoshida, Shota Sekiguchi","doi":"10.1364/osac.434640","DOIUrl":"https://doi.org/10.1364/osac.434640","url":null,"abstract":"","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41416277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Shaping entangled photons through emulated turbulent atmosphere 通过模拟湍流大气塑造纠缠光子
IF 1.6
OSA Continuum Pub Date : 2021-08-08 DOI: 10.1364/OSAC.431200
Ronen Shekel, Ohad Lib, Alon Sardas, Y. Bromberg
{"title":"Shaping entangled photons through emulated turbulent atmosphere","authors":"Ronen Shekel, Ohad Lib, Alon Sardas, Y. Bromberg","doi":"10.1364/OSAC.431200","DOIUrl":"https://doi.org/10.1364/OSAC.431200","url":null,"abstract":"Scattering by atmospheric turbulence is one of the main challenges in creating long free-space optical links, and specifically links of entangled photons. Classical compensation methods are hard to apply to entangled photons, due to inherently low signal to noise ratios and the fragility of entanglement. We have recently shown that we can use a bright laser beam that pumps spontaneous parametric down conversion to control the spatial correlations between entangled photons for compensating their scattering. In this work, we apply the pump-shaping technique to compensate for the scrambling of correlations between entangled photons that scatter by emulated atmospheric turbulence. We use a spatial light modulator and Kolmogorov’s turbulence model to emulate atmospheric turbulence in the lab, and enhance the entangled photons’ signal by a factor of fifteen using pump optimization. We show this for both a static and dynamic emulated atmosphere, and also demonstrate the compensation of the scattering of a higher-order mode. Our results can open the door towards realizing free-space quantum links with entangled photons, used in applications such as quantum key distribution.","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47564626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Continuous tracking of moving objects in long-distance imaging through a turbulent medium using a 3D point cloud analysis: publisher’s note 通过湍流介质使用三维点云分析在远距离成像中连续跟踪移动物体:出版商说明
IF 1.6
OSA Continuum Pub Date : 2021-07-15 DOI: 10.1364/OSAC.436259
O. Maor, Y. Yitzhaky
{"title":"Continuous tracking of moving objects in long-distance imaging through a turbulent medium using a 3D point cloud analysis: publisher’s note","authors":"O. Maor, Y. Yitzhaky","doi":"10.1364/OSAC.436259","DOIUrl":"https://doi.org/10.1364/OSAC.436259","url":null,"abstract":"This publisher’s note contains corrections to Eqs. (3) and (13) in [OSA Continuum3, 2372 (2020)10.1364/OSAC.393806].","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43149423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spatio-spectral characterization of ultrashort laser pulses with a birefringent delay line 具有双折射延迟线的超短激光脉冲的空间光谱特性
IF 1.6
OSA Continuum Pub Date : 2021-06-19 DOI: 10.1364/osac.430432
S. Jolly, O. Gobert, F. Quéré
{"title":"Spatio-spectral characterization of ultrashort laser pulses with a birefringent delay line","authors":"S. Jolly, O. Gobert, F. Quéré","doi":"10.1364/osac.430432","DOIUrl":"https://doi.org/10.1364/osac.430432","url":null,"abstract":"We utilize a birefringent delay line to perform spatially-resolved Fourier transform spectroscopy at multiple planes around the focus of an ultrashort laser pulse. Combining these measurements at multiple planes with phase-retrieval, i.e. the INSIGHT technique, allows for the determination of the three-dimensional laser field, in both amplitude and phase, lacking only the knowledge of a spatially-uniform spectral phase. We use the device to simultaneously measure two low-order spatio-temporal couplings resulting from a misaligned chromatic lens doublet. Besides being a new implementation of spatio-spectral characterization of ultrashort pulses, this technique allows for more accuracy and stability in spatio-spectral characterization and a push to shorter wavelengths, and may ultimately enable sparse measurements.","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46351263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Comparison of two low-noise CEO frequencystabilization methods foran all-PM Yb:fiber NALM oscillator 全PM Yb:fiber NALM振荡器两种低噪声CEO稳频方法的比较
IF 1.6
OSA Continuum Pub Date : 2021-06-15 DOI: 10.1364/OSAC.424340
S. Salman, Yuxuan Ma, K. Gürel, S. Schilt, Chen Li, P. Pfäfflein, C. Mahnke, J. Fellinger, S. Droste, A. S. Mayer, O. Heckl, T. Südmeyer, C. Heyl, I. Hartl
{"title":"Comparison of two low-noise CEO frequencystabilization methods foran all-PM Yb:fiber NALM oscillator","authors":"S. Salman, Yuxuan Ma, K. Gürel, S. Schilt, Chen Li, P. Pfäfflein, C. Mahnke, J. Fellinger, S. Droste, A. S. Mayer, O. Heckl, T. Südmeyer, C. Heyl, I. Hartl","doi":"10.1364/OSAC.424340","DOIUrl":"https://doi.org/10.1364/OSAC.424340","url":null,"abstract":"We present a comparison of two low-noise carrier-envelope offset (CEO) frequency stabilization methods studied using an ytterbium (Yb) fiber laser oscillator based on a nonlinear amplifying loop mirror. We first investigate the phase locking performance achieved with cross-gain modulation (XGM) via injection of an auxiliary low-power continuous-wave (CW) laser into the fiber gain medium. Amplification of the injected CW laser light cross-modulates the gain of the oscillator, resulting in an intra-cavity power modulation, thus providing control of the CEO frequency. The XGM method is then compared with the conventional pump-current modulation scheme. Both stabilization methods provide similar locking performances with sub-200-mrad of integrated residual carrier-envelope-phase (CEP) noise (10 Hz to 1 MHz), suitable for high-resolution comb spectroscopy applications.","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45152937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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