Photonics and Optoelectronics Meetings最新文献

Research of beamforming network based on micro-ring resonator in optically controlled phased array radar 光控相控阵雷达中基于微环谐振器的波束形成网络研究

Photonics and Optoelectronics Meetings Pub Date : 2023-04-10 DOI: 10.1117/12.2672811

Li Lu, Yuan Jiang, Rui Xiao, Cangzhen Meng

引用次数: 0

Prediction of ice thickness of Optical Fiber Composite Overhead Ground Wire (OPGW) based on multi-class support vector machine 基于多类支持向量机的光纤复合架空地线冰厚预测

Photonics and Optoelectronics Meetings Pub Date : 2023-04-10 DOI: 10.1117/12.2671705

Yong-qiang Zhao, Xuan Li, Rui Tian, Xuebin Feng, Jian Wu, Jiakai Hao, Weiwei Dou

引用次数: 0

Core-mismatched SPR temperature sensor based on silver and PDMS films 基于银和PDMS薄膜的核错配SPR温度传感器

Photonics and Optoelectronics Meetings Pub Date : 2023-04-10 DOI: 10.1117/12.2672644

Zhipeng Lin, Ting Liu

{"title":"Core-mismatched SPR temperature sensor based on silver and PDMS films","authors":"Zhipeng Lin, Ting Liu","doi":"10.1117/12.2672644","DOIUrl":"https://doi.org/10.1117/12.2672644","url":null,"abstract":"Surface plasmon resonance (SPR) sensors show great potential in practical applications of concentration and temperature measurement due to their high sensitivity and fast response speed. However, the cumbersome probe preparation process is still a significant problem faced by fiber SPR technology. Here, we propose a simple and rapid method for the fabrication of sensing probes. In this study, the silver mirror reaction was used to coat the silver film on the surface of a core mismatch fiber structure formed by a single-mode fiber (SMF) and two multimode fibers (MMF) to excite the SPR, The core mismatch sensing element is prepared by cleaving and fusion splicing, and the coating of the sensing film adopts a simple silver mirror reaction, so the preparation process is extremely simple. After the silver film is uniformly coated on the single-mode fiber sensing unit, the sensing unit was immersed in polydimethylsiloxane (PDMS) and cured by heating for temperature sensing measurement. Thanks to the higher thermo-optic coefficient, the refractive index of PDMS on the sensor probe will also change when the external temperature changes, so the surface plasmon resonance dip underwent a noticeable wavelength shift. Further, the cured PDMS can also enhance the stability of the probe structure. The results show that in the temperature range of 20℃ to 80℃, the maximum temperature sensitivity is -1.66nm/℃, with good stability, accuracy and repeatability. In addition, the sensor has the advantages of simple structure, convenient fabrication, good reversibility and strong stability. The temperature sensor based on core mismatch is expected to be used in the temperature detection of fields such as biology, medical treatment, and aerospace.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126875906","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

Theoretical and experimental research on output characteristics of oscillating-amplifying integrated fiber laser 振荡放大集成光纤激光器输出特性的理论与实验研究

Photonics and Optoelectronics Meetings Pub Date : 2023-04-10 DOI: 10.1117/12.2672834

Lingfa Zeng, C. Shi, Hairong Zhong, Peng Wang, Baolai Yang, Xiaoming Xi, Hanwei Zhang, Xiao-lin Wang, Xiaojun Xu

引用次数: 1

Anomalous spectral holes in a fiber-loop circuit undergoing dynamic modulation 经过动态调制的光纤环路中的异常光谱空穴

Photonics and Optoelectronics Meetings Pub Date : 2023-04-10 DOI: 10.1117/12.2671665

Lu Ding, Hui Yu, Weichao Du, Chuan Tian, Li Zeng

{"title":"Anomalous spectral holes in a fiber-loop circuit undergoing dynamic modulation","authors":"Lu Ding, Hui Yu, Weichao Du, Chuan Tian, Li Zeng","doi":"10.1117/12.2671665","DOIUrl":"https://doi.org/10.1117/12.2671665","url":null,"abstract":"We investigate theoretically and experimentally anomalous spectral holes, i.e. the cancellations of certain frequency modes inside a wide frequency comb, in a fiber-loop circuit with an incorporated phase modulator (PM). During the process of phase modulation, the frequency modes couple between each other accompanying with a nonreciprocal phase, which mimics an artificial gauge potential for photons. As the light circulates in the fiber loop, coherent interference effects occur between frequency modes in distinct circulations, which are highly influenced by the artificial gauge potential. By carefully choosing the gauge potential via adjusting the modulation phase, we can coherently suppress a series of frequency components within a broad spectrum and flexibly manipulate the positions, widths and depths of these drops. In the experiment, we achieved a hole position shift with ~50 GHz and a hole width with ~30 GHz while the extinction ratio reaches ~15 dB. For even higher modulation depth beyond the experiment range, the simulation shows that the width of main spectral hole will grow linearly with the increase of modulation depth while the position and depth tend to be stable. The study reveals the anomalous cancellation of frequency modes in a fiber loop, which holds great promises for potential applications in optical communications and signal processing.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130913794","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

Design and cavity surface optimization of a new electro-absorption modulation laser 新型电吸收调制激光器的设计与腔面优化

Photonics and Optoelectronics Meetings Pub Date : 2023-04-10 DOI: 10.1117/12.2672740

Zhenqiang Yang, Huayu Jia, Jie Yu

{"title":"Design and cavity surface optimization of a new electro-absorption modulation laser","authors":"Zhenqiang Yang, Huayu Jia, Jie Yu","doi":"10.1117/12.2672740","DOIUrl":"https://doi.org/10.1117/12.2672740","url":null,"abstract":"In order to solve the problems of slow response of the Selective Area Growth – Double Stack Active Laser-Electro-absorption Modulated Laser (SAG-DSAL-EML) in high frequency modulation and catastrophic optical damage (COD) caused by the sharp rise of cavity surface temperature when working at high temperature, a new type of SAG-DSAL-EML is designed, In this paper, the InGaAsP/InP material with 1.31 um iron-doped buried structure is used. The active region of the new SAG-DSAL-EML becomes mesa structure, and the iron-doped InP layer is grown on its two layers of epitaxy, and the cavity surface is coated with Al2O3 ,in the meantime the heat insulation structure is added. Firstly, ALDS and HFSS are used to analyze the laser and modulator of the designed iron-doped buried structure EML, the threshold current of SAG-DSAL laser is reduced by 13% , the lateral limiting ability of iron-doped buried structure is increased by 52% , the difference of far-field transverse and longitudinal angles is reduced by 40% , and the far-field divergence angle is smaller than the traditional ridge waveguide structure Compared with the traditional PNPN burying structure, the response band width of the iron-doped burying structure modulator is improved by about 24% at -3 dB, which meets the basic requirements of high-speed laser communication. Then, the solid heat transfer of the laser model is analyzed numerically and simulated by COMSOL. At 550K,the temperature of the cavity surface is simulated when there is no heat-insulating structure, no heat-insulating structure, no heat-insulating structure and no heat-insulating structure. The experimental results show that the laser with coating and heat insulation can effectively prevent COD at 550K and prolong its service life.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126442771","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

Gain-equalized L-band few-mode erbium-doped fiber amplifier based on extremely simple fiber design 基于极简单光纤设计的增益均衡l波段少模掺铒光纤放大器

Photonics and Optoelectronics Meetings Pub Date : 2023-04-10 DOI: 10.1117/12.2671947

Q. Qiu, Z. Gu, Le He, Yingbo Chu, N. Dai, Jinyan Li

引用次数: 0

Vibration detection and waveform recovery based on sliding root mean square in φ-OTDR 基于滑动均方根的φ-OTDR振动检测与波形恢复

Photonics and Optoelectronics Meetings Pub Date : 2023-04-10 DOI: 10.1117/12.2672642

Cong Chen, Yuhang Feng, Ming-Sien Wen, Jianjun Zhou, Zujun Qin, Wentao Zhang

{"title":"Vibration detection and waveform recovery based on sliding root mean square in φ-OTDR","authors":"Cong Chen, Yuhang Feng, Ming-Sien Wen, Jianjun Zhou, Zujun Qin, Wentao Zhang","doi":"10.1117/12.2672642","DOIUrl":"https://doi.org/10.1117/12.2672642","url":null,"abstract":"Phase-sensitive optical time domain reflectometer (φ-OTDR) has been extensively investigated in fields of intrusion detection and structural health monitoring. It should be noted that phase noises would keep accumulating during pulse transmission. By subtracting an initial phase at the input point from demodulated phases at other positions, the noises related to the laser itself except random noises can be considerably reduced. In order to further decrease the impact of random noises on waveform retrieval of external vibrations, it is necessary to eliminate the accumulated noises before vibration position as much as possible. In this work, a sliding root mean square method (SRMS) is firstly applied to locate vibration events. By the SRMS, the demodulated phase at ~10 m before vibration point is regarded as the modified reference. Then, the vibration waveform can be retrieved after phase subtraction. For comparison purpose, both the input and modified references are employed to retrieve temporal vibration signals. Experimental results show that the SRMS shows good noise performance for vibration location. In terms of signal retrieval, the vibration waveform can be recovered with better noise suppression by the modified reference compared to the input one.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133225556","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

An evaluation method of the interference of ultrawideband signals to out-of-band systems 一种超宽带信号对带外系统干扰的评估方法

Photonics and Optoelectronics Meetings Pub Date : 2023-04-10 DOI: 10.1117/12.2672653

Zhefeng Hu, Xianming Jiang, R. Yuan, Kaixin Chen, Wenbao Sun

引用次数: 0

Preparation and characterization of silica nanospheres for color films 彩色膜用二氧化硅纳米球的制备与表征

Photonics and Optoelectronics Meetings Pub Date : 2023-04-10 DOI: 10.1117/12.2675033

Ye-Qiang Zhang, Ting Liu

{"title":"Preparation and characterization of silica nanospheres for color films","authors":"Ye-Qiang Zhang, Ting Liu","doi":"10.1117/12.2675033","DOIUrl":"https://doi.org/10.1117/12.2675033","url":null,"abstract":"Silica nanospheres have special optical properties such as relatively stable chemical property, high temperature resistance and corrosion resistance, so they can be widely used in Chemistry, biomedical and materials science fields. However, many existing preparation methods of silica nanospheres not only rely on expensive instruments, but also have long preparation cycles. Here, we propose an optimized Stӧber method to prepare silica nanospheres, which is simple, efficient and low-cost. Silica nanospheres with different sizes can be obtained by repeatedly adding the tetraethoxysilane (TEOS) solution dropwise at a constant speed. The characterizations by transmission electron microscope (TEM) and zeta potential meter reveal that the size of silica nanospheres gradually increases with the increase of the amount of TEOS. In addition, different concentrations of ammonia affect not only the rate of reaction, but also the final particle size of the microspheres. Afterwards, the silica nanospheres with sizes of 190 nm, 235 nm, and 284 nm were prepared into colored photonic crystal thin films by chemical self-assembly, and they appeared blue, green and red under the reflection of natural light. Finally, their reflection spectra were measured using a selfbuild characterization system, and found that their peak reflection wavelengths were 427 nm, 511 nm, and 622nm. These results indicate that the reflection peaks of the films gradually red-shift with increasing silica nanosphere size. The proposed optimized Stӧber method for preparing silica nanospheres is simple and efficient, which can greatly expand their application in various fields. For example, the surface of silica nanospheres can be linked to various chemical groups by silanization, which can be used for biochemical sensing. Colored films prepared from silica nanospheres also have potential applications in decoration and other fields.","PeriodicalId":422113,"journal":{"name":"Photonics and Optoelectronics Meetings","volume":"1167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121045144","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