{"title":"Monolithic p-i-n GaAlAs photorefractive devices","authors":"P. Tayebati, C. Hantzis, R. Sacks","doi":"10.1109/LEOS.1996.565207","DOIUrl":"https://doi.org/10.1109/LEOS.1996.565207","url":null,"abstract":"Summary form only given. Photorefractive epitaxial devices are band-gap engineered, high speed, real-time holograms that operate by a combination of charge transport and resonant electrooptic nonlinearities in semiconductors. In this work we report successful demonstration of a number of monolithic photorefractive devices consisting of an MQW photorefractive device structure on a GaAlAs-AlAs quarter-wave stack mirror.","PeriodicalId":332726,"journal":{"name":"Conference Proceedings LEOS'96 9th Annual Meeting IEEE Lasers and Electro-Optics Society","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132771796","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}
{"title":"Lasers and electro-optics in the health care of the future","authors":"J. Parrish","doi":"10.1109/LEOS.1996.565093","DOIUrl":"https://doi.org/10.1109/LEOS.1996.565093","url":null,"abstract":"Summary form only given. Medical practice is being rapidly redefined by market forces on one side and new technologies on the other. The shift from inpatient to outpatient surgery is a good example of this. Advances in procedural medicine will be built upon the core technologies of high speed computing, robotics, systems engineering, lasers, optics, imaging and biomedical engineering. These technologies cut across traditional disciplines and have the possibilities of making medical care better, safer and less expensive.","PeriodicalId":332726,"journal":{"name":"Conference Proceedings LEOS'96 9th Annual Meeting IEEE Lasers and Electro-Optics Society","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133649134","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}
{"title":"Optical near-field photocurrent spectroscopy as a new tool for analyzing optoelectronic devices","authors":"A. Richter, C. Lienau, J. Tomm, T. Elsaesser","doi":"10.1109/LEOS.1996.565110","DOIUrl":"https://doi.org/10.1109/LEOS.1996.565110","url":null,"abstract":"Optical near-field spectroscopy and related methods display a rapid development as powerful new analytical tools for the investigation of optoelectronic devices such as, e.g., semiconductor lasers. Photocurrent spectroscopy, belonging to the traditional methods of semiconductor physics, gained an entirely new range of application by employing an optical near-field microscope as the optical excitation source. Thus near-field optical beam induced current (NOBIC) spectroscopy has been developed. It combines the spatial resolution of less than some 100 nm of electron beam based techniques such as electron beam induced current (EBIC) with the advantages of providing selective excitation of the laser structure if a tunable wavelength excitation source is used and being completely non-destructive. Here, a NOBIC study of different GaAs-AlGaAs high power diode laser array structures such as double quantum well (DQW) graded index separate confinement heterostructures as well as step index AlGaAs structures is presented.","PeriodicalId":332726,"journal":{"name":"Conference Proceedings LEOS'96 9th Annual Meeting IEEE Lasers and Electro-Optics Society","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122429583","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}
{"title":"Vertical-cavity surface-emitting lasers and smart pixels for optical interconnection systems","authors":"T. Kurokawa","doi":"10.1109/LEOS.1996.571655","DOIUrl":"https://doi.org/10.1109/LEOS.1996.571655","url":null,"abstract":"Though TDM (and recently WDM) are generally adopted to increase the total throughput in optical communication systems, SDM must be more effective in most optical interconnection systems. This is because SDM has more advantage in cost and power consumption than TDM, when the transmission distance is rather short, i.e. less than a few hundred meters. VCSEL and smart pixel arrays are very important for constructing optical interconnection systems because they can emit, switch and process a number of broadband optical signals simultaneously. This paper reviews VCSELs and VCSEL-based smart pixels, and discusses the issues for their application to optical interconnections. VCSELs and smart pixels are applicable to three types of parallel optical interconnections: 1) parallel optical fiber link-the optical signals from the SEL array are transmitted through a fiber ribbon for distances less than a few hundred meters; 2) free-space optical interconnects-high-density optical signals from a two-dimensional SEL array are distributed into several ports for distance shorter than one meter; 3) reconfigurable optical interconnects nterconnect patterns among processors are changed dynamically by means of free-space photonic switching networks.","PeriodicalId":332726,"journal":{"name":"Conference Proceedings LEOS'96 9th Annual Meeting IEEE Lasers and Electro-Optics Society","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115352240","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}
M. Kondow, S. Nakatsuka, T. Kitatani, Y. Yazawa, M. Okai
{"title":"Continuous wave operation of GaInNAs laser diode at room temperature","authors":"M. Kondow, S. Nakatsuka, T. Kitatani, Y. Yazawa, M. Okai","doi":"10.1109/LEOS.1996.565256","DOIUrl":"https://doi.org/10.1109/LEOS.1996.565256","url":null,"abstract":"Summary form only given. We have succeeded in continuous wave (CW) operation of a GaInNAs single active layer QW laser diode at room temperature, for the first time. The use of GaInNAs greatly improved the high temperature performance of long-wavelength-range laser diodes. Thus, the applicatability of GaInNAs, which is a novel material for laser diodes used in optical-fiber communications, was demonstrated.","PeriodicalId":332726,"journal":{"name":"Conference Proceedings LEOS'96 9th Annual Meeting IEEE Lasers and Electro-Optics Society","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116197996","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}
M. Hu, J.Z. Huang, R. Scarmozzino, M. Levy, R. Osgood
{"title":"Electronically tunable Mach-Zehnder polarization splitter","authors":"M. Hu, J.Z. Huang, R. Scarmozzino, M. Levy, R. Osgood","doi":"10.1109/LEOS.1996.571637","DOIUrl":"https://doi.org/10.1109/LEOS.1996.571637","url":null,"abstract":"In this paper, we report a new approach to a GaAs-AlGaAs TE/TM beam splitter which permits operation in the III-V materials system. Since III-V semiconductors do not show intrinsic material birefringence, our device is based on the birefringence induced by the electro-optical effect. Specifically, the device utilizes the large difference in propagation constants of the first-higher-order TE mode (TE/sub 01/) and the fundamental TM mode (TM/sub 00/) in the mode-sorting Y-branch.","PeriodicalId":332726,"journal":{"name":"Conference Proceedings LEOS'96 9th Annual Meeting IEEE Lasers and Electro-Optics Society","volume":"515 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116210304","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}
{"title":"The effects of strain and crystallographic orientation on nonlinearities in quantum well devices","authors":"A. Smirl, E. Towe","doi":"10.1109/LEOS.1996.571951","DOIUrl":"https://doi.org/10.1109/LEOS.1996.571951","url":null,"abstract":"The author discusses their progress in investigating the influences of crystallographic orientation and of strain on the nonlinear and electro-optical properties of III-V semiconductor compounds, and they present examples of how these orientation-dependent properties can be used to design novel optical devices.","PeriodicalId":332726,"journal":{"name":"Conference Proceedings LEOS'96 9th Annual Meeting IEEE Lasers and Electro-Optics Society","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116512758","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}
{"title":"Temperature sensitivity of oscillation wavelength in 1.3 /spl mu/m-GaInAsP/InP quantum-well semiconductor lasers","authors":"T. Higashi, T. Yamamoto, S. Ogita","doi":"10.1109/LEOS.1996.565096","DOIUrl":"https://doi.org/10.1109/LEOS.1996.565096","url":null,"abstract":"Characteristics of optical sources for access networks are required to be insensitive to the environment temperature change. In a relatively long-haul (> 10 km) and high bit-rate (>100Mb/s) transmission system, the effect of dispersion of optical fiber could not be negligible. Therefore, the stability of the oscillation wavelength to the temperature change could also be required. In this paper, we experimentally examined the temperature sensitivity of the oscillation wavelength in 1.3 /spl mu/m GaInAsP-InP QW semiconductor lasers.","PeriodicalId":332726,"journal":{"name":"Conference Proceedings LEOS'96 9th Annual Meeting IEEE Lasers and Electro-Optics Society","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122065941","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}
{"title":"Information processing with short optical pulses","authors":"M. Nuss","doi":"10.1109/LEOS.1996.565271","DOIUrl":"https://doi.org/10.1109/LEOS.1996.565271","url":null,"abstract":"Compact, practical, and cost effective femtosecond lasers are beginning to show up commercially both as solid-state and fiber lasers. These femtosecond sources can be used to great advantage in many communications and information processing applications. Interestingly enough, most of these applications are not related to the speed of these pulses, but rather use some other aspect of femtosecond laser pulses such as large spectral bandwidth, spectral coherence, intensity, short coherent length, or signal-to-noise advantages. For example, the 3 THz spectral bandwidth of a 100 fs laser pulse is wide enough to support 30 WDM channels spaced at 100 GHz, all covered by a single laser source. These channels can now be modulated using either a modulator array or even only a single modulator when the femtosecond pulses are chirped by propagation in optical fiber, as in chirped-pulse WDM. Using diode-pumped erbium fiber lasers, such a femtosecond WDM source can support many channels in a cost effective way. A single TDM modulator running at a multiple of the repetition rate of the laser can now both define as well as encode data onto the WDM channels sequentially. Interesting applications also result when we take advantage of space-time analogies in optical systems involving short pulses. This principle can be used for all-optical packet header recognition of terabit-per-second data streams. Using computer-generated holograms (CGH), we have generated and subsequently recognized 8-bit pulse sequences at a 1 Tb/s data rate.","PeriodicalId":332726,"journal":{"name":"Conference Proceedings LEOS'96 9th Annual Meeting IEEE Lasers and Electro-Optics Society","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121662153","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}