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Blue and Green Upconversion Emission Modification in Tb, Yb Co-Doped Y2Ti2O7 Inverse Opal Tb, Yb共掺Y2Ti2O7逆蛋白石的蓝绿上转换发射改性
2012 Symposium on Photonics and Optoelectronics Pub Date : 2012-05-21 DOI: 10.1109/SOPO.2012.6270541
D. Yan, J. Qiu, Zhiguo Song, Dacheng Zhou, Xue Yu, Yong Yang, Rongfei Wang, Hangjun Wu, Z. Yin, Zhengwen Yang
{"title":"Blue and Green Upconversion Emission Modification in Tb, Yb Co-Doped Y2Ti2O7 Inverse Opal","authors":"D. Yan, J. Qiu, Zhiguo Song, Dacheng Zhou, Xue Yu, Yong Yang, Rongfei Wang, Hangjun Wu, Z. Yin, Zhengwen Yang","doi":"10.1109/SOPO.2012.6270541","DOIUrl":"https://doi.org/10.1109/SOPO.2012.6270541","url":null,"abstract":"We obtained upconversion light-emitting photonic materials (Y<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>: Tb, Yb) with an inverse opal structure by a self-assembly technique in combination with a sol-gel method, and investigated their upconversion emission properties. The results showed that the photonic band gap has a significant influence on the upconversion emission of Yb, Tb co-doped Y<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> inverse opal photonic crystals. Significant suppression of the blue or green upconversion emission was detected if the photonic band gap overlapped with the Tb<sup>3+</sup> ions emission band.","PeriodicalId":159850,"journal":{"name":"2012 Symposium on Photonics and Optoelectronics","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123709833","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
Degenerate Four-Wave Mixing Method in Trace Isotope Analysis of Rubidium, Cesium and Potassium 铷、铯、钾痕量同位素分析中的简并四波混合法
2012 Symposium on Photonics and Optoelectronics Pub Date : 2012-05-21 DOI: 10.1109/SOPO.2012.6270511
Xuemei Cheng, Z. Ren, Jian Wang, Y. Miao, Xunli Yin, J. Bai
{"title":"Degenerate Four-Wave Mixing Method in Trace Isotope Analysis of Rubidium, Cesium and Potassium","authors":"Xuemei Cheng, Z. Ren, Jian Wang, Y. Miao, Xunli Yin, J. Bai","doi":"10.1109/SOPO.2012.6270511","DOIUrl":"https://doi.org/10.1109/SOPO.2012.6270511","url":null,"abstract":"The needs for isotope-level resolution in the measurement of atomic species are significant in environmental studies. By fingerprinting isotopes at sensitive levels, one can track pollutants in various environmental samples and characterize specific locations and sources including those contaminants and chemical runoff. In this work, degenerate four-wave mixing (DFWM) is employed to analyze atomic isotopes and the hyperfine structures. Rubidium (Rb), cesium (Cs) and potassium (K) isotopes are measured. The results show that isotopes and hyperfine structures of the three samples are clearly resolved. Low detect limit as 5.4 fg/ml, 0.63 pg/mL and 0.09 fg/mL are achieved for Rb, Cs and K isotopes respectively. Isotope-level resolution and trace-level sensitivity indicate that DFWM is a potential spectroscopic technique in isotope trace analysis in environment application.","PeriodicalId":159850,"journal":{"name":"2012 Symposium on Photonics and Optoelectronics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122825515","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
A Comparative Analysis for the Intermodal Interference of Elliptical Core Fiber, Panda Fiber and Two-Hole PCF 椭圆芯光纤、熊猫芯光纤和双孔聚光光纤的多模干涉比较分析
2012 Symposium on Photonics and Optoelectronics Pub Date : 2012-05-21 DOI: 10.1109/SOPO.2012.6270479
Feng Liu, Delan Cao, Xuan Guo, Xin Lu
{"title":"A Comparative Analysis for the Intermodal Interference of Elliptical Core Fiber, Panda Fiber and Two-Hole PCF","authors":"Feng Liu, Delan Cao, Xuan Guo, Xin Lu","doi":"10.1109/SOPO.2012.6270479","DOIUrl":"https://doi.org/10.1109/SOPO.2012.6270479","url":null,"abstract":"Intermodal inteference technology is a novel branch of optic-fiber sensor technique. Recently, with the advantages of simple structure and high stability, intermodal interference technology has attracted more people's eyes. In this paper, we investigate the theoretical analysis and experiment results of intermodal interference in several polarization maintaining optic fibers such as elliptical core fiber, panda fiber and two-hole PCF. The mode propagation characteristics, dual-mode operation range and intermodal interference propagation constant difference of these fibers are analysised comparatively. And an experiment is setup to demonstrate the thoerical simulation results and the feasibility of optic-fiber sensors based on intermodal interference technology. The research results show that all these three fiber can be used to design intermodal sensors for measuring extern disturbance such as strain, temperature and stress etc.","PeriodicalId":159850,"journal":{"name":"2012 Symposium on Photonics and Optoelectronics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125019239","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
Preparation and Microstructure Analysis of GaN Nanowires with the Sol-Gel Method 溶胶-凝胶法制备GaN纳米线及其微观结构分析
2012 Symposium on Photonics and Optoelectronics Pub Date : 2012-05-21 DOI: 10.1109/SOPO.2012.6271123
Yi Yang, Xuewen Wang, Yuzhou Jing
{"title":"Preparation and Microstructure Analysis of GaN Nanowires with the Sol-Gel Method","authors":"Yi Yang, Xuewen Wang, Yuzhou Jing","doi":"10.1109/SOPO.2012.6271123","DOIUrl":"https://doi.org/10.1109/SOPO.2012.6271123","url":null,"abstract":"The two-step method, which includes the sol-gel process and ammoniation in high temperature, is used to synthesize GaN nanomaterials on Si (111) substrate. Ga(NO3)3 was used as gallium source, citric acid as the chelating agent and nickel nitrate as catalyst. After the sol can be formed by mixing ethanol solutions of Ga(NO3)3 and citric acid, the precursor films were coated on Si slices with or without the catalyst. and the dried samples are treated in ammonia at different temperatures in an atmosphere furnace. X-ray diffraction instrument (XRD) indicates that the as-prepared samples are hexagonal GaN, and scanning electron microscope (SEM) reveals that the microstucture morphologies of samples are crystal, nanorods and nanowires, and then high-resolution transmission electron microscopy (HTEM) were used to characterize the as-synthesized nanowire is of single-crystalline hexagonal wurtzite structure. The conclusion can be drawn that the catalyst and ammoniation temperature can influence greatly on the microstucture and shape features of as-synthesized GaN samples .","PeriodicalId":159850,"journal":{"name":"2012 Symposium on Photonics and Optoelectronics","volume":"183 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122050521","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
Multiwavelength Pulse Fiber Laser Generated by Stimulated Brillouin Scattering 受激布里渊散射产生的多波长脉冲光纤激光器
2012 Symposium on Photonics and Optoelectronics Pub Date : 2012-05-21 DOI: 10.1109/SOPO.2012.6270951
Xiaorui Li, H. Gong, Yumeng Tu, Yong-xing Jin, Jian-feng Wang, Hanfeng Xu
{"title":"Multiwavelength Pulse Fiber Laser Generated by Stimulated Brillouin Scattering","authors":"Xiaorui Li, H. Gong, Yumeng Tu, Yong-xing Jin, Jian-feng Wang, Hanfeng Xu","doi":"10.1109/SOPO.2012.6270951","DOIUrl":"https://doi.org/10.1109/SOPO.2012.6270951","url":null,"abstract":"Mutiwavelength lasers are of great interest as their wide applications. In this paper, a novel multiwavelength pulse Brillouin Erbium-doped fiber laser was demonstrated and its principle was given. An electro-optic modulator (EOM) was used to modulate continue wave into pulse light. The results show that, the peak values are unstable, about ±3dB, but the wavelength interval was stable, about 0.088nm. And the unstable factor was discussed. Also the influence of the Brillouin pump power on output optical spectrum was discussed in experiment. Both the wavelength number and the power of the output light increased with the increasing of pulse Brillouin pump power.","PeriodicalId":159850,"journal":{"name":"2012 Symposium on Photonics and Optoelectronics","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123478095","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
Dispersive Wave Interaction between Solitons in Fiber Lasers with Saturable Absorbers 可饱和吸收光纤激光器中孤子间色散波相互作用
2012 Symposium on Photonics and Optoelectronics Pub Date : 2012-05-21 DOI: 10.1109/SOPO.2012.6270437
A. Komarov, F. Amrani, A. Dmitriev, Konstantin Komarov, D. Meshcheriakov, F. Sanchez
{"title":"Dispersive Wave Interaction between Solitons in Fiber Lasers with Saturable Absorbers","authors":"A. Komarov, F. Amrani, A. Dmitriev, Konstantin Komarov, D. Meshcheriakov, F. Sanchez","doi":"10.1109/SOPO.2012.6270437","DOIUrl":"https://doi.org/10.1109/SOPO.2012.6270437","url":null,"abstract":"On basis of numerical simulation it is found that the long-distance soliton wings can be formed by dispersive waves emitted by ultrashort pulses due to of various lumped elements in passive mode-locked fiber lasers. Peculiarities of the interaction of two solitons through such wings in lasers with lumped saturable absorbers (SA) are analyzed. Different sets of bound steady-states of two-soliton molecule are obtained. Among them there are sets with and without an alternation of parity of neighboring quantum steady-states. It is shown that the investigated interaction can result in mechanisms of both attraction and repulsion of loosely bound solitons. It is demonstrated a coding of an information by highly-stable bound soliton sequences.","PeriodicalId":159850,"journal":{"name":"2012 Symposium on Photonics and Optoelectronics","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131320060","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
Effect of Well Thickness on the Intersubband Optical Absorptions in AlGaN/GaN/AlGaN Quantum Wells 阱厚度对AlGaN/GaN/AlGaN量子阱子带间光吸收的影响
2012 Symposium on Photonics and Optoelectronics Pub Date : 2012-05-21 DOI: 10.1109/SOPO.2012.6270435
M. Li, B. Fang, R. H. Li, Z. Y. Zhao, W. Zuo, G. Sun, Y. Zhang
{"title":"Effect of Well Thickness on the Intersubband Optical Absorptions in AlGaN/GaN/AlGaN Quantum Wells","authors":"M. Li, B. Fang, R. H. Li, Z. Y. Zhao, W. Zuo, G. Sun, Y. Zhang","doi":"10.1109/SOPO.2012.6270435","DOIUrl":"https://doi.org/10.1109/SOPO.2012.6270435","url":null,"abstract":"By solving the Schrödinger and Poisson equations self-consistently for AlGaN/GaN QWs, we calculate the intersubband optical absorption coefficients for QWs with various well thicknesses. By increasing the well thickness, the amplitude of the dipole matrix increases slowly. However, the decrease of the energy separation results in the red-shift of the resonant absorption peak and the decrease of the magnitude of the absorption peak. Moreover, when the well thickness decreases to 10 Å, the evident decrease of the overlap between wave functions for the first two subbands leads to the abrupt decrease of the amplitude of the dipole matrix and the absorption peak. These results indicate that the intersubband optical absorption can be greatly modulated by the well thickness, the built-in electric field has an important effect on the intersubband absorption coefficients in III-nitride QWs, and III-nitride QWs are potential candidates for the design and application of intersubband devices.","PeriodicalId":159850,"journal":{"name":"2012 Symposium on Photonics and Optoelectronics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116634756","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 Efficient Algorithm Based on Propagation Equations of Tm3+-Doped Double-Clad Fiber Laser 一种基于Tm3+掺杂双包层光纤激光器传输方程的高效算法
2012 Symposium on Photonics and Optoelectronics Pub Date : 2012-05-21 DOI: 10.1109/SOPO.2012.6270946
Jinglin Liu, Huanlong Hu, C. Shuai
{"title":"An Efficient Algorithm Based on Propagation Equations of Tm3+-Doped Double-Clad Fiber Laser","authors":"Jinglin Liu, Huanlong Hu, C. Shuai","doi":"10.1109/SOPO.2012.6270946","DOIUrl":"https://doi.org/10.1109/SOPO.2012.6270946","url":null,"abstract":"An efficient, simple and fast algorithm with the least calculation based on the propagation equations of Tm-doped double-clad fiber laser is proposed. Based on this algorithm, the initial guessing value is directly corrected based on the relation of the two-end boundary values of laser power when the guessed value does not satisfy the boundary conditions, and it is not necessary to know the initial or terminal laser power. The evolutions of the propagation pump and laser powers along the fiber are analyzed by the efficient algorithm. It is proved that the initial guessed laser power can be fast convergent to the truth value regardless of the magnitude of the initial guessed laser power, and this algorithm can be effective even if the pump power is up to kilowatt level. Finally, compared with the improved shooting algorithm based on the Newton-Raphson method, the iteration progress of this algorithm is easier when the initial guessed value do not satisfy the boundary conditions, and the running time is at least 2 times as fast as that of the improved shooting algorithm, so this algorithm can be more quickly and simpler convergent to the truth value. So, this algorithm can be used in the Tm3+-doped double-clad fiber laser efficiently.","PeriodicalId":159850,"journal":{"name":"2012 Symposium on Photonics and Optoelectronics","volume":"390 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123362118","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: 3
A Novel All-Optical Flip-Flop Based on Single-Wavelength SOA-MZI 基于单波长SOA-MZI的新型全光触发器
2012 Symposium on Photonics and Optoelectronics Pub Date : 2012-05-21 DOI: 10.1109/SOPO.2012.6271066
M. Sedghi, H. Kaatuzian, S. Khatami
{"title":"A Novel All-Optical Flip-Flop Based on Single-Wavelength SOA-MZI","authors":"M. Sedghi, H. Kaatuzian, S. Khatami","doi":"10.1109/SOPO.2012.6271066","DOIUrl":"https://doi.org/10.1109/SOPO.2012.6271066","url":null,"abstract":"In this paper, a novel set-reset all-optical flip-flop (SR-AOFF) is proposed. The SR-AOFF is based on semiconductor optical amplifier-Mach Zehnder Interferometer (SOA-MZI) operating at a single wavelength. It is composed of two coupled SOA-MZIs using a common bidirectional coupler. Due to self phase modulation (SPM) and self gain modulation (SGM) in SOAs, two SOA-MZI switches modulate the injected photon rate of each other. This process occurs in a positive feedback loop to demonstrate an optical bistabilty. The simulation results show that excitation pulses with 35ps duration and optical energy of 7.5fJ can switch the output states. Switching transition time is about 110ps and is equal for leading and falling edges. The output power of this flip-flop is estimated to be in the order of 20 milliWatts.","PeriodicalId":159850,"journal":{"name":"2012 Symposium on Photonics and Optoelectronics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134560422","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
Study of the Impact of Wave Distortion in Fourier Transform Spectroscopy 傅里叶变换光谱学中波形畸变影响的研究
2012 Symposium on Photonics and Optoelectronics Pub Date : 2012-05-21 DOI: 10.1109/SOPO.2012.6270428
Ruilong Luo, Ligong Li, Xiaofen Yu, Cheng-Cheng Wang
{"title":"Study of the Impact of Wave Distortion in Fourier Transform Spectroscopy","authors":"Ruilong Luo, Ligong Li, Xiaofen Yu, Cheng-Cheng Wang","doi":"10.1109/SOPO.2012.6270428","DOIUrl":"https://doi.org/10.1109/SOPO.2012.6270428","url":null,"abstract":"In Fourier transform spectroscopy, there is a wave distortion of the optical system, and it has a greater impact on the data obtained by equipment. With analysis for the basic principle of the Fourier transform spectroscopy, we give the interferogram mathematical model of wave distortion. By using this model and the computer simulation method, we simulate with the distortion value 60nm, give the recovery spectrum of the distortion. It can be seen that the impact of distortion will lead to the decrease in intensity and the reduction of spectral details. Therefore, in the process of design and practical application, it's important to control the distortion.","PeriodicalId":159850,"journal":{"name":"2012 Symposium on Photonics and Optoelectronics","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131234785","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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