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Applications of Photonic Technology最新文献

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Elliptic propagation invariant optical fields: Mathieu beams 椭圆传播不变光场:马修光束
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.473984
S. Chávez-Cerda, M. D. Iturbe Castillo, J. Gutiérrez-Vega
{"title":"Elliptic propagation invariant optical fields: Mathieu beams","authors":"S. Chávez-Cerda, M. D. Iturbe Castillo, J. Gutiérrez-Vega","doi":"10.1117/12.473984","DOIUrl":"https://doi.org/10.1117/12.473984","url":null,"abstract":"The interest in propagation invariant optical fields (PIOF's) is due to the fact that, under optimal conditions, they propagate long distances without significant change of their transverse intensity distribution. These kind of wavefields were first identified and described in terms of Bessel function. Based on the separability of the Helmholtz equation in elliptic cylindrical coordinates we have demonstrated that there exist another class of PIOF's. The lowest order mode may have a highly localised distribution along one of the transverse directions and a sharply peaked quasi-periodic structure along the other. Higher order modes are composed of elliptical vortices and the corresponding intensity profiles are formed by propagation-invariant confocal elliptical rings. These fields are described by the Mathieu-Hankel functions which are exact solutions of Helmholtz equation and for this reason we have called them Mathieu beams. We demonstrate that Bessel beams are a particular case of Mathieu beams, which have a broader fan of interesting features. Since the Mathieu functions form a whole set of exact travelling wave solutions of the Helmholtz wave equation they can be used to describe a class of PIOF's. The McCutchen theorem provides the relation between the general class of PIOF's and these new beams.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121154987","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
Applications of magnetically shaped liquid optical surfaces 磁形液体光学表面的应用
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474405
P. Laird, R. Bergamasco, V. Berube, E. Borra, A. Ritcey, H. Yockell-Lelièvre
{"title":"Applications of magnetically shaped liquid optical surfaces","authors":"P. Laird, R. Bergamasco, V. Berube, E. Borra, A. Ritcey, H. Yockell-Lelièvre","doi":"10.1117/12.474405","DOIUrl":"https://doi.org/10.1117/12.474405","url":null,"abstract":"In this paper we present preliminary results on a new type of optical material. By combining a thin reflective colloidal film with a superparamagnetic liquid known as a ferrofluid, it is possible to produce an optical quality surface that can be shaped by the application of a magnetic field. Ferrofluids are colloidal suspensions of nanometer-sized magnetic particles and are considered a well established, low-risk technology. We have demonstrated deformations of several microns at frequencies exceeding 100 Hz, making the material useful as a deformable mirror for adaptive optics and also of potential interest in numerous other optical devices. Liquid optics are relatively inexpensive when compared to conventional glass surfaces of similar quality and are free of mechanical constraints such as resonance and limits on the displacement of adjacent actuators. We present results to date and discuss some of the potential applications of liquid optics as well as the challenges remaining in realising practical devices based on this technology.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"4833 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130845159","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
Automated alignment for free-space optical systems based on micro-optical-electro-mechanical systems 基于微光机电系统的自由空间光学系统自动对准
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474871
J. Neff, Jianglong Zhang, A. Tuantranont, Yijing Fu, Yung-Cheng Lee, V. Bright
{"title":"Automated alignment for free-space optical systems based on micro-optical-electro-mechanical systems","authors":"J. Neff, Jianglong Zhang, A. Tuantranont, Yijing Fu, Yung-Cheng Lee, V. Bright","doi":"10.1117/12.474871","DOIUrl":"https://doi.org/10.1117/12.474871","url":null,"abstract":"The emerging technology of micro-optical-electro-mechanical systems (MOEMS) offer promise for automating the alignment of free-space optical systems, especially intra-computer optical interconnects. MOEMS-based microlenses and micromirrors have been fabricated for the purpose of providing initial system alignment and dynamic alignment.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"48 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130866541","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
Holographic wavelength filters based on MEMPLEX(r) photopolymer 基于MEMPLEX(r)光聚合物的全息波长滤波器
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474837
R. Burzyński, J. Weibel, M. Casstevens, R. Billmers, E. J. Billmers
{"title":"Holographic wavelength filters based on MEMPLEX(r) photopolymer","authors":"R. Burzyński, J. Weibel, M. Casstevens, R. Billmers, E. J. Billmers","doi":"10.1117/12.474837","DOIUrl":"https://doi.org/10.1117/12.474837","url":null,"abstract":"We present the design, development and characterization of volume holographic wavelength filters recorded in MEMPLEX - a new photoreactive polymer that has widespread applications in holographic technology. These holographic filters are characterized by their narrow wavelength and angular dephasing. MEMPLEX photopolymer exhibits complete lack of shrinkage during recording and post-processing, is completely self-supporting and can be fabricated to a size required by the application, has excellent optical quality, is resistant to most chemicals and has long shelf-life, it is therefore ideally suited for optical filter technology. We have recorded and characterized numerous holographic reflection volume gratings in 2 mm thick samples in order to examine the effect of writing geometry on wavelength and angle selectivity. The presented results show that efficient reflection gratings with more than 75% diffraction efficiency and linewidths of less than 0.2 nm can be recorded. Efficient wavelength filters can be used in many applications including telecom MUX/DMUX, LIDAR, spectroscopy, etc","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126939534","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
Optical add-drop multiplexer based on linear chirped moire fiber gratings 基于线性啁啾云纹光纤光栅的光加降复用器
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474047
Xinhua Xu, Changgui Lu, Chunxiang Xu, Yiping Cui
{"title":"Optical add-drop multiplexer based on linear chirped moire fiber gratings","authors":"Xinhua Xu, Changgui Lu, Chunxiang Xu, Yiping Cui","doi":"10.1117/12.474047","DOIUrl":"https://doi.org/10.1117/12.474047","url":null,"abstract":"In this paper, we show a kind of wavelength selective elements for optical communications using linearly chirped moire fiber gratings. According to the coupled-mode theory, the spectral characteristics of linearly chirped moire fiber gratings are studied. By choosing the grating length, the induced refractive index change, and the linear chirp coefficient, various optical transmission filters based on linearly chirped moire fiber gratings can be achieved. These filters are very useful for add/drop operations in wavelength-division-multiplexed (WDM) systems. A novel scheme of optical add-drop multiplexer (OADM) configuration based on linearly chirped moire fiber grating filter is proposed for flexible multiple wavelengths add-drop in WDM systems.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115928209","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
Performance characteristics of a 5-bit optical receive beamformer 5位光接收波束形成器的性能特性
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474293
S. Palit, S. Granieri, A. Siahmakoun, B. Black, C. Pagel
{"title":"Performance characteristics of a 5-bit optical receive beamformer","authors":"S. Palit, S. Granieri, A. Siahmakoun, B. Black, C. Pagel","doi":"10.1117/12.474293","DOIUrl":"https://doi.org/10.1117/12.474293","url":null,"abstract":"This paper describes implemented methods for characterizing a 5-bit programmable dispersion matrix (PDM) that is built to control a two-channel Receive beamformer in the 1550 nm region. The architecture of the PDM, is based on an array of 5 delay lines each having two spliced fiber Bragg gratings. Phase measurements for 32 possible delay configurations of the PMD are presented. Beam-patterns of this Receive beamformer at RF frequencies of 0.2, 0.5 and 1 GHz agrees well with the theoretical calculations. The main lobe of the beam pattern is shown to be independent of frequency for several target positions thus demonstrating a 'squint-free' characteristic of this optical processor.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115371773","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: 5
Organic Light Emitting Device as a fluorescence spectroscopy's light source : one step towards the lab-on-a-chip device 有机发光器件作为荧光光谱的光源:迈向芯片实验室的一步
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474296
S. Camou, M. Kitamura, J. Gouy, H. Fujita, Y. Arakawa, T. Fujii
{"title":"Organic Light Emitting Device as a fluorescence spectroscopy's light source : one step towards the lab-on-a-chip device","authors":"S. Camou, M. Kitamura, J. Gouy, H. Fujita, Y. Arakawa, T. Fujii","doi":"10.1117/12.474296","DOIUrl":"https://doi.org/10.1117/12.474296","url":null,"abstract":"Many papers were recently dedicated to the lab-on-a-chip applications, where all the basic elements should be integrated directly onto the microchip. The fluorescence spectroscopy is mostly used as a detection method due to its high reliability and sensitivity, but requires light source and photo-detector. For the first time, we then propose to use Organic material Light Emitting Diode (OLED) to supply a light source for the optical detection based on fluorescence spectroscopy. By combining this OLED with micro-fluidic channels patterned in PDMS layer, the integration of light source on the chip is then achieved. First, the ability of Organic Material to excite fluorescent response from dye is demonstrated. Then, some configurations are described in order to decrease the major drawbacks that have to be solved before applying such kind of devices.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122414144","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: 10
Ytterbium-doped fiber laser pumping of a thulium-doped ZBLAN blue fiber laser 掺镱光纤激光泵浦掺铥ZBLAN蓝色光纤激光器
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.476263
D. Faucher, P. Laperle, R. Vallée
{"title":"Ytterbium-doped fiber laser pumping of a thulium-doped ZBLAN blue fiber laser","authors":"D. Faucher, P. Laperle, R. Vallée","doi":"10.1117/12.476263","DOIUrl":"https://doi.org/10.1117/12.476263","url":null,"abstract":"The thulium-doped ZBLAN fiber laser converts infrared radiation in the range 1100-1160 nm to visible radiation around 480 nm through an upconversion pumping process. A brief description of the laser through a rate equation analysis modeling is presented. A compact experimental setup using a diode-pumped Yb3+ fiber laser at 1108 nm is presented. Single transverse mode blue emission at 482 nm with a maximal output power of 96 mW was obtained. A slight increase of the laser threshold due to photoinduced losses from 103 mW to 240 mW was observed, which is significantly less than previously reported values. Further optimization of the laser efficiency is proposed using Raman fiber laser pumping at 1125 and 1160 nm. Numerical simulations are used to calculate the expected increase in blue output power.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128280003","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
Optical Code-Division Multiple Access: Challenges and Solutions 光码分多址:挑战与解决方案
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.473977
Lawrence R. Chen
{"title":"Optical Code-Division Multiple Access: Challenges and Solutions","authors":"Lawrence R. Chen","doi":"10.1117/12.473977","DOIUrl":"https://doi.org/10.1117/12.473977","url":null,"abstract":"Optical code-division multiple-access (OCDMA) is a technique well-suited for providing the required photonic connectivity in local access networks. Although the principles of OCDMA have been known for many years, it has never delivered on its potential. In this paper, we will describe the key challenges and impediments that have prevented OCDMA from delivering on its potential, as well as discuss possible solutions. We focus on the limitations of one-dimensional codes and the benefit of exploiting the additional degrees of freedom in using multiple dimensions for defining the codes. We discuss the advantages of using differential detection in order to implement bipolar communications. We then show how two-dimensional wavelength-time codes can be appropriately combined with differential detection in order to achieve high performance OCDMA systems with a large number of users operating with good BER performance for a large aggregate capacity. We also discuss the impact of channel coding techniques, for example forward error correction or turbo coding, on BER performance.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127850854","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
A porous glass waveguide doped with an electro-optic polymer 掺杂电光聚合物的多孔玻璃波导
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474883
O. Pouraghajani, S. Caron, R. Lessard
{"title":"A porous glass waveguide doped with an electro-optic polymer","authors":"O. Pouraghajani, S. Caron, R. Lessard","doi":"10.1117/12.474883","DOIUrl":"https://doi.org/10.1117/12.474883","url":null,"abstract":"Many devices using the electro-optic effect, in which the index of refraction changes upon application of an external electrical field, have been proposed to control the propagation of light in planar waveguides. Some electro-optic waveguides are made from polymers materials. However, none of them has the circular symmetry of optical fibers. Therefore the connection between optical fibers and planar waveguides is a difficult and costly task. A solution to this problem is to insert electro-optic polymers in a porous optical fiber. Such porous fibers are made of a plurality of interconnected micro-pores in a skeleton of silica glass and can be obtained from phase separation of alkali-borosilicate optical fibers. In this work, we describe porous optical fibers filled with a DR1-polyacrylate electro-optic polymer.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121126354","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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