Optica Applicata最新文献_第2页

Research on composite manufacturing method of semi-buried 1×32 optical splitter 半埋式1×32光分路器复合制造方法研究

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2023-01-01 DOI: 10.37190/oa230202

Qing Tao, Sihao Xie

引用次数: 0

Evaluation of a high-speed hybrid OAM-OFDM-MDM multiplexed coherent FSO system under desert conditions 沙漠条件下高速混合OAM-OFDM-MDM复用相干FSO系统的评估

4区物理与天体物理

Optica Applicata Pub Date : 2023-01-01 DOI: 10.37190/oa230308

Shivaji Sinha, Chakresh Kumar

{"title":"Evaluation of a high-speed hybrid OAM-OFDM-MDM multiplexed coherent FSO system under desert conditions","authors":"Shivaji Sinha, Chakresh Kumar","doi":"10.37190/oa230308","DOIUrl":"https://doi.org/10.37190/oa230308","url":null,"abstract":"To meet the needs of future wireless optical networks, this paper introduces a high-speed, hybrid multiplexed, coherent free-space optical (FSO) communication system that integrates an orbital angular momentum (OAM) multiplexed signal with an orthogonal frequency division multiplexing (OFDM) technique. Two independent QAM polarized beams, each carrying in-phase and quadrature (I/Q) phase 16-QAM-OFDM modulated data, are combined using mode division multiplexing (MDM) to increase the capacity of the proposed system. The reason of choosing OFDM is its capability to support higher data rate, and mitigating intersymbol interference (ISI). The signal is detected using a coherent detection-based digital signal processing (DSP) algorithm at the receiver end. The proposed hybrid FSO system is evaluated in low and heavy dust environments using bit error rate (BER), link distance, optical signal-to-noise ratio (OSNR), and received optical power performance matrices. The simulation results demonstrate the successful transmission of a 120 Gb/s single carrier over the longest link ranges of 1.5 and 0.40 km, respectively, under low and heavy dust weather environments below the signal degradation threshold value (forward error correction (FEC) limit) of BER 2.2 × 10 –3 in strong turbulent conditions.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135913982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ammonia level sensor using tapered optical fiber coated with titanium dioxide-incorporated porphyrin 氨液位传感器采用锥形光纤涂层与二氧化钛结合卟啉

4区物理与天体物理

Optica Applicata Pub Date : 2023-01-01 DOI: 10.37190/oa230302

Frazna Parasuti, Dyah Hikmawati, Herri Trilaksana, Moh. Yasin

{"title":"Ammonia level sensor using tapered optical fiber coated with titanium dioxide-incorporated porphyrin","authors":"Frazna Parasuti, Dyah Hikmawati, Herri Trilaksana, Moh. Yasin","doi":"10.37190/oa230302","DOIUrl":"https://doi.org/10.37190/oa230302","url":null,"abstract":"Since ammonia is water-soluble, environmental studies have shown that the industrial waste such as fertilizer manufacturing, food products, palm oil, urea fertilizer industry can cause very serious damage to water body ecosystems if not properly managed, resulting in a decrease in water quality. Devices based on optical technology, especially devices that combine optical fibers and nanomaterials, are identified as highly sensitive to the species of interest by detecting changes in physicochemical properties. A practical, easy-to-use, inexpensive instrument for detecting ammonia level was proposed using tapered optical fiber (TOF) coated with titanium dioxide-incorporated porphyrin. TOF was fabricated by simultaneously stretching and heating. The preparation of TiO 2 /porphyrin/gelatine was prepared to coat tapered optical fiber by dipping. SEM analysis shows an increase in length and a decrease in diameter, also the successful coating of titanium dioxide and porphyrin in the taper region. The EDX analysis also proves the presence of the Ti element in the TOF layer. The TOF produces significant sensing performances toward the ammonia liquid concentration level. The TOF coated with titanium dioxide-incorporated porphyrin can detect a one ppm difference in ammonia concentration with a certain range of output voltage for every concentration has.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135914261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical simulations and optimization of highly sensitive biosensor for cancer cell detection 用于癌细胞检测的高灵敏度生物传感器的光学模拟与优化

4区物理与天体物理

Optica Applicata Pub Date : 2023-01-01 DOI: 10.37190/oa230306

Abdelkarim El Mouncharih, Rabi Takassa, Omar Farkad, Abdelaziz Tchenka, El Alami Ibnouelghazi, Driss Abouelaoualim

引用次数: 0

Designing ultra-fast all-optical full-subtractor using the photonic crystal structure 利用光子晶体结构设计超高速全光全减光器

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2023-01-01 DOI: 10.37190/oa230107

引用次数: 1

Research on characteristics of embedded resonator sensor based on PtS2 基于PtS2的嵌入式谐振器传感器特性研究

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2023-01-01 DOI: 10.37190/oa230204

Xin Li, Xieyuan Li, Haitao Zhang, Shuang Chen, Shurong Liu, Yang Li

{"title":"Research on characteristics of embedded resonator sensor based on PtS2","authors":"Xin Li, Xieyuan Li, Haitao Zhang, Shuang Chen, Shurong Liu, Yang Li","doi":"10.37190/oa230204","DOIUrl":"https://doi.org/10.37190/oa230204","url":null,"abstract":"An embedded microring resonator model using PtS2 as the core layer was designed and optimized for sensing. The inner layer is made of PtS2, and SiO2 and Si3N4 are used as cladding. The overall structure is Si3N4-SiO2-PtS2-SiO2-Si3N4. Field strength distribution of longitudinal section of single straight waveguide and the longitudinal section of coupling part of straight and annular waveguides are simulated according to the coupled-mode theory. The transfer matrix method is used to analyze characteristics between the length of the U-shaped feedback waveguide and the circumference of microring and the change of attenuation factor and coupling coefficient on the output spectrum. The simulation results showed that the embedded microring resonator with PtS2 as the core presents excellent optical properties. The resonance depth is more than –50 dB, and the sensitivity can reach 1806.61 dB/RIU. When the resonance wavelength is 1550.86 nm and the self-coupling coefficient is 0.9849. The corresponding detection limit is about 1.66056 × 10–7 dB/RIU, and the quality factor is 2.8848 × 10–5 under the measurement system with a signal-to-noise ratio of 30 dB. Compared with the traditional single microring structure, the proposed microring presents a higher free spectral range and more suitable for the fabrication of high-sensitivity, low-detection limit, and large-measurement range sensors.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70019285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phase retrieval without phase unwrapping for white blood cells in deep-learning phase-shifting digital holography 深度学习移相数字全息中白细胞的相位恢复

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2023-01-01 DOI: 10.37190/oa230109

Shuyang Jin, Xiaoqing Xu, Jili Chen, Yudan Ni

引用次数: 0

An extrinsic Fabry–Pérot interference fiber sensorfor ultrasonic detection of partial discharge 一种用于局部放电超声检测的外源性法布里-普氏干涉光纤传感器

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2023-01-01 DOI: 10.37190/oa230203

Ximin Zhang, Sen Qian, Huixin Liu, Chuan Chen, Chuanlu Deng, Chengyong Hu, Yi Huang

{"title":"An extrinsic Fabry–Pérot interference fiber sensorfor ultrasonic detection of partial discharge","authors":"Ximin Zhang, Sen Qian, Huixin Liu, Chuan Chen, Chuanlu Deng, Chengyong Hu, Yi Huang","doi":"10.37190/oa230203","DOIUrl":"https://doi.org/10.37190/oa230203","url":null,"abstract":"An ultrasonic sensor based on extrinsic Fabry–Pérot interference (EFPI) has been designed and demonstrated to detect the ultrasonic wave signal. The sensitivity and natural frequency of fiber Fabry–Pérot (F-P) sensor with different structure parameter have been simulated by COMSOL. The simulation results illustrate that the sensitivity is up to 1.737 nm/kPa and the natural frequency is 2.1 MHz, when the silica diaphragm thickness is 2 μm, the radius is 90 μm, and the cavity length is 18 μm. The most suitable parameters have been selected and the F-P sensor has been fabricated. When the ultrasonic signals with the frequencies of 40 kHz and 1.2 MHz are respectively applied to the sensor, the frequencies detected by the EFPI ultrasonic sensor are 39 kHz and 1.21 MHz based on a partial discharge detection experiment for the designed demodulation system. The experimental results show that the sensor can accurately detect ultrasonic signals. As an excellent platform for ultrasonic signal sensing, this EFPI ultrasonic sensing system has great potential applications in partial discharge detection field.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70019270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transverse energy propagation and interference of elliptical Gaussian beams 椭圆高斯光束的横向能量传播与干涉

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2023-01-01 DOI: 10.37190/oa230207

Jin Li, Shuang-Cheng Tan

引用次数: 0

Effects of plasma expansion plumes in view of pulses laser irradiating centimeter-scale spherical space debris 脉冲激光照射厘米级球形空间碎片对等离子体膨胀羽流的影响

4区物理与天体物理

Optica Applicata Pub Date : 2023-01-01 DOI: 10.37190/oa230303

None Yingwu Fang

{"title":"Effects of plasma expansion plumes in view of pulses laser irradiating centimeter-scale spherical space debris","authors":"None Yingwu Fang","doi":"10.37190/oa230303","DOIUrl":"https://doi.org/10.37190/oa230303","url":null,"abstract":"The objective of this article was to investigate the dynamic evolution behaviors of plasma expansion plumes by pulses laser irradiating centimeter-scale spherical space debris. A calculated model of centimeter-scale spherical space debris irradiated by pulses laser was firstly deduced based on FEM (finite element method)/COMSOL, and the action rules of plasma expansion plumes by pulses laser-generated irradiating the debris were simulated for different laser powers and action times. The results showed that the velocity of plasma expansion plumes was increased with the increase of laser powers and action times. Especially, when the laser power was 700 kW and the action time was close to 25 μs, the maximum velocity of plasma expansion plumes approached 1.91 km/s, and the diffusion radius of plasma expansion plumes was increased by about 2.5 mm. Further, the diffusion radius was about twice that of 400 kW when the action time reached about 48 μs. As a result, by simulating the transient flow process of nanosecond pulses laser irradiating small spherical space debris, the flow field evolution information and plasma plumes evolution characteristics of centimeter-scale space debris at nanosecond time resolution were revealed.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135913985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0