Pub Date : 2007-12-26DOI: 10.1109/AOE.2007.4410862
Hao Xu, J. Hao, Jiajie Dai, Lei Zhou
It is well known that electromagnetic (EM) waves can not transmit through a metallic waveguide at frequencies well below its cutoff frequency, since only evanescent waves are allowed inside the waveguides under such conditions. However, through inserting local resonance structures of either electric or magnetic type into the waveguide, we find extraordinary transmissions of EM waves with different polarizations through the waveguide at frequencies well below the waveguide's cut-off value [1] [2]. We have identified two different mechanisms for such unusual transparencies, in which the medium at transparency can be characterized either by doubly positive epsiveff and mueff [see Fig. l(left)] or by doubly negative epsiveff and mueff [see Fig. 1 (right)] [see also Ref. 2 for such a mechanism]. We also demonstrated that while a hollow metallic waveguide can be viewed as an effective medium with epsivwg = 1 - fp2/f2, muwg = 1 for the transverse-electric (TE) polarized waves, it should be viewed as a different effective medium with epsivwg = 1, muwg = 1 - fp2/f2 for the transverse-magnetic (TM) polarized waves, where fp is the cut-off frequency of the waveguide. We have designed realistic electric/magnetic resonance structures, and have performed accurate finite-different-time-domain (FDTD) simulations on such realistic structures to successfully demonstrate all theoretical predictions based on the model calculations.
{"title":"Resonance-induced transmissions through waveguides below cut-off frequencies: An effective-medium model for waveguide","authors":"Hao Xu, J. Hao, Jiajie Dai, Lei Zhou","doi":"10.1109/AOE.2007.4410862","DOIUrl":"https://doi.org/10.1109/AOE.2007.4410862","url":null,"abstract":"It is well known that electromagnetic (EM) waves can not transmit through a metallic waveguide at frequencies well below its cutoff frequency, since only evanescent waves are allowed inside the waveguides under such conditions. However, through inserting local resonance structures of either electric or magnetic type into the waveguide, we find extraordinary transmissions of EM waves with different polarizations through the waveguide at frequencies well below the waveguide's cut-off value [1] [2]. We have identified two different mechanisms for such unusual transparencies, in which the medium at transparency can be characterized either by doubly positive epsiv<sub>eff</sub> and mu<sub>eff</sub> [see Fig. l(left)] or by doubly negative epsiv<sub>eff</sub> and mu<sub>eff</sub> [see Fig. 1 (right)] [see also Ref. 2 for such a mechanism]. We also demonstrated that while a hollow metallic waveguide can be viewed as an effective medium with epsiv<sub>wg</sub> = 1 - f<sub>p</sub> <sup>2</sup>/f<sup>2</sup>, mu<sub>wg</sub> = 1 for the transverse-electric (TE) polarized waves, it should be viewed as a different effective medium with epsiv<sub>wg</sub> = 1, mu<sub>wg</sub> = 1 - f<sub>p</sub> <sup>2</sup>/f<sup>2</sup> for the transverse-magnetic (TM) polarized waves, where f<sub>p</sub> is the cut-off frequency of the waveguide. We have designed realistic electric/magnetic resonance structures, and have performed accurate finite-different-time-domain (FDTD) simulations on such realistic structures to successfully demonstrate all theoretical predictions based on the model calculations.","PeriodicalId":370885,"journal":{"name":"2007 Asia Optical Fiber Communication and Optoelectronics Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127299403","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}
Pub Date : 2007-12-26DOI: 10.1109/AOE.2007.4410837
Xue-Wen Chen, Sailing He, Zhi Wang, P. Wai
A two-stage Hermite-Gaussian function expansion method incorporated with anisotropic perfectly matched layers (PMLs) is developed to efficiently calculate the complex propagation constant of a microstructured optical fiber (MOF).
{"title":"Two-stage Hermite-Gaussian function method with perfectly matched layers for analyzing microstructured optical fibers","authors":"Xue-Wen Chen, Sailing He, Zhi Wang, P. Wai","doi":"10.1109/AOE.2007.4410837","DOIUrl":"https://doi.org/10.1109/AOE.2007.4410837","url":null,"abstract":"A two-stage Hermite-Gaussian function expansion method incorporated with anisotropic perfectly matched layers (PMLs) is developed to efficiently calculate the complex propagation constant of a microstructured optical fiber (MOF).","PeriodicalId":370885,"journal":{"name":"2007 Asia Optical Fiber Communication and Optoelectronics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127839639","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}
Pub Date : 2007-12-26DOI: 10.1109/AOE.2007.4410694
Yi-Hsin Lin, Jhih-Ming Yang, Shin‐Tson Wu, C. Liao
A reflective polarizer-free liquid crystal display (LCD) using dye-doped LC gels is demonstrated. The main mechanism is to combine dye absorption and polydomain scattering. The potential applications are electronic papers and flexible displays.
{"title":"Polarizer-free liquid crystal displays","authors":"Yi-Hsin Lin, Jhih-Ming Yang, Shin‐Tson Wu, C. Liao","doi":"10.1109/AOE.2007.4410694","DOIUrl":"https://doi.org/10.1109/AOE.2007.4410694","url":null,"abstract":"A reflective polarizer-free liquid crystal display (LCD) using dye-doped LC gels is demonstrated. The main mechanism is to combine dye absorption and polydomain scattering. The potential applications are electronic papers and flexible displays.","PeriodicalId":370885,"journal":{"name":"2007 Asia Optical Fiber Communication and Optoelectronics Conference","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131674385","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}
Pub Date : 2007-12-26DOI: 10.1109/AOE.2007.4410698
C. Towery, T. Zhang
Dispersion-tolerant technologies like duobinary modulation and Rx-based EDC have gained significant media attention recently. These technologies have important implications for the future development of uncompensated short reach networks and are now maturing with duobinary products available from multiple companies. With Corning LEAF fiber, the integrated application of duobinary modulation with Rx-based EDC can deliver 1500 km of transmission reach without any in-line dispersion compensation and with attractive cost savings. So finally the goal of cost-effective extended reach transmission without any in-line dispersion compensation can be achieved, and this itself translates into a significant advantage for transparent and reconfigurable networks.
{"title":"Reduced dispersion fiber extends reach for dispersion tolerant systems","authors":"C. Towery, T. Zhang","doi":"10.1109/AOE.2007.4410698","DOIUrl":"https://doi.org/10.1109/AOE.2007.4410698","url":null,"abstract":"Dispersion-tolerant technologies like duobinary modulation and Rx-based EDC have gained significant media attention recently. These technologies have important implications for the future development of uncompensated short reach networks and are now maturing with duobinary products available from multiple companies. With Corning LEAF fiber, the integrated application of duobinary modulation with Rx-based EDC can deliver 1500 km of transmission reach without any in-line dispersion compensation and with attractive cost savings. So finally the goal of cost-effective extended reach transmission without any in-line dispersion compensation can be achieved, and this itself translates into a significant advantage for transparent and reconfigurable networks.","PeriodicalId":370885,"journal":{"name":"2007 Asia Optical Fiber Communication and Optoelectronics Conference","volume":"36 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114039385","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}
Pub Date : 2007-12-26DOI: 10.3788/COL20080603.0176
Shu-yuen Wu, H. Ho
We present a new surface plasmon resonance (SPR) sensing system exhibiting a root-mean-square resolution of plusmn 5.2times10-9 refractive index units. This brings non-labeling SPR biosensing closer to that achievable by florescence-based techniques.
{"title":"Single-beam self-referenced phase-sensitive surface plasmon resonance sensor with high detection resolution","authors":"Shu-yuen Wu, H. Ho","doi":"10.3788/COL20080603.0176","DOIUrl":"https://doi.org/10.3788/COL20080603.0176","url":null,"abstract":"We present a new surface plasmon resonance (SPR) sensing system exhibiting a root-mean-square resolution of plusmn 5.2times10-9 refractive index units. This brings non-labeling SPR biosensing closer to that achievable by florescence-based techniques.","PeriodicalId":370885,"journal":{"name":"2007 Asia Optical Fiber Communication and Optoelectronics Conference","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122443730","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}
Pub Date : 2007-12-26DOI: 10.1109/AOE.2007.4410857
F. Gity, M. N. Moghaddasi, L. Ansari
We drive a numerical model, based on physical principles, for a separate confinement heterostructure-quantum well (SCH-QW) laser. Effects of carrier transport on the transient responses and chirp characteristic is analyzed by means of finite-difference method.
{"title":"Modelling and numerical analysis of carrier transport effects on the wavelength chirp of SCH-QW lasers","authors":"F. Gity, M. N. Moghaddasi, L. Ansari","doi":"10.1109/AOE.2007.4410857","DOIUrl":"https://doi.org/10.1109/AOE.2007.4410857","url":null,"abstract":"We drive a numerical model, based on physical principles, for a separate confinement heterostructure-quantum well (SCH-QW) laser. Effects of carrier transport on the transient responses and chirp characteristic is analyzed by means of finite-difference method.","PeriodicalId":370885,"journal":{"name":"2007 Asia Optical Fiber Communication and Optoelectronics Conference","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122679924","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}
Pub Date : 2007-12-26DOI: 10.1109/AOE.2007.4410873
Yan Cheng, X. Liu, Haifeng Li
The RGB color space has been widely used, but has limitations. A new presentation method is put forward. It uses floating-point to characterizing colors in L*a*b* color space. Due to high precision of floating-point and uniform perception of L*a*b* color space, it can present better color perception.
{"title":"Uniform color space for color storage","authors":"Yan Cheng, X. Liu, Haifeng Li","doi":"10.1109/AOE.2007.4410873","DOIUrl":"https://doi.org/10.1109/AOE.2007.4410873","url":null,"abstract":"The RGB color space has been widely used, but has limitations. A new presentation method is put forward. It uses floating-point to characterizing colors in L*a*b* color space. Due to high precision of floating-point and uniform perception of L*a*b* color space, it can present better color perception.","PeriodicalId":370885,"journal":{"name":"2007 Asia Optical Fiber Communication and Optoelectronics Conference","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131494098","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}
Pub Date : 2007-12-26DOI: 10.1109/AOE.2007.4410846
Y. Rao, Fang Liu, Yidong Huang, Wei Zhang
Long range surface plasmon strip waveguide with low refractive index dielectric buffer layers is proposed in this paper. Simulation results show that ultra low propagation loss can be obtained.
{"title":"Low loss performances of long range surface Plasmon polariton waveguides with buffer layer structures","authors":"Y. Rao, Fang Liu, Yidong Huang, Wei Zhang","doi":"10.1109/AOE.2007.4410846","DOIUrl":"https://doi.org/10.1109/AOE.2007.4410846","url":null,"abstract":"Long range surface plasmon strip waveguide with low refractive index dielectric buffer layers is proposed in this paper. Simulation results show that ultra low propagation loss can be obtained.","PeriodicalId":370885,"journal":{"name":"2007 Asia Optical Fiber Communication and Optoelectronics Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127004471","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}
Pub Date : 2007-12-26DOI: 10.1109/AOE.2007.4410890
Li Zhengbin, Peng Chao, Xu Anshi
Summary form only given. Slow light has achieved great progress in waveguide and fibers in room temperature, which could be accelerating the transition of this technique to applications. This talk will review devising methods for tailoring the dispersion of optical materials, such as electromagnetically induced transparency, photonic crystals, and nano-optic resonators over the last decade. And the potential applications of slow light for optical buffering, data synchronization, optical memories, and optical signal processing will be cataloged. Then the interaction between slow light and Sagnac effect is discussed. The concept of the Sagnac effect in a slow-light medium and resonator structure with high group dispersion is investigated. It is found that a slow-light medium can be utilized for relative motion sensing, and a slow-light resonator structure is suitable to detect absolute rotation for navigation purposes. It is noted that the high group dispersion leads to a huge enhancement of the rotation sensor's sensitivity in a resonating structure, and an approach to evaluate and design resonator devices with slow-light property is proposed. Moreover, a folded loop-lattice-based structure is numerically simulated to verify the concept.
{"title":"Slow light and its potential applications","authors":"Li Zhengbin, Peng Chao, Xu Anshi","doi":"10.1109/AOE.2007.4410890","DOIUrl":"https://doi.org/10.1109/AOE.2007.4410890","url":null,"abstract":"Summary form only given. Slow light has achieved great progress in waveguide and fibers in room temperature, which could be accelerating the transition of this technique to applications. This talk will review devising methods for tailoring the dispersion of optical materials, such as electromagnetically induced transparency, photonic crystals, and nano-optic resonators over the last decade. And the potential applications of slow light for optical buffering, data synchronization, optical memories, and optical signal processing will be cataloged. Then the interaction between slow light and Sagnac effect is discussed. The concept of the Sagnac effect in a slow-light medium and resonator structure with high group dispersion is investigated. It is found that a slow-light medium can be utilized for relative motion sensing, and a slow-light resonator structure is suitable to detect absolute rotation for navigation purposes. It is noted that the high group dispersion leads to a huge enhancement of the rotation sensor's sensitivity in a resonating structure, and an approach to evaluate and design resonator devices with slow-light property is proposed. Moreover, a folded loop-lattice-based structure is numerically simulated to verify the concept.","PeriodicalId":370885,"journal":{"name":"2007 Asia Optical Fiber Communication and Optoelectronics Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128137409","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}
Pub Date : 2007-12-26DOI: 10.1109/AOE.2007.4410824
Cheng-Ling Lee, Ray-Kuang Lee, Yee-Mou Kao
A Lagrange multiplier optimization method to the inverse design problems for complex LPGs was developed in the present study. For the first time, an EDFA gain flattening LPG is successfully synthesized by the proposed algorithm.
{"title":"Lagrange multiplier optimization synthesis of long-period fiber gratings","authors":"Cheng-Ling Lee, Ray-Kuang Lee, Yee-Mou Kao","doi":"10.1109/AOE.2007.4410824","DOIUrl":"https://doi.org/10.1109/AOE.2007.4410824","url":null,"abstract":"A Lagrange multiplier optimization method to the inverse design problems for complex LPGs was developed in the present study. For the first time, an EDFA gain flattening LPG is successfully synthesized by the proposed algorithm.","PeriodicalId":370885,"journal":{"name":"2007 Asia Optical Fiber Communication and Optoelectronics Conference","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133963060","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}
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