IEEE Princeton Section Sarnoff Symposium最新文献_第2页

GaAs Power HBT: COOL Device With HOT Performance GaAs Power HBT: COOL Device With HOT Performance

IEEE Princeton Section Sarnoff Symposium Pub Date : 1995-04-28 DOI: 10.1109/SARNOF.1995.636670

F. Ali

引用次数: 0

Optical gain and refractive index manipulation in coherently prepared atomic systems 相干制备原子系统的光学增益和折射率操纵

IEEE Princeton Section Sarnoff Symposium Pub Date : 1995-04-28 DOI: 10.1109/SARNOF.1995.636716

A. Streater, J. A. Kleinfeld

引用次数: 0

Ultrafast all-optical wavelength and polarization independent demultiplexer 超快全光波长和偏振无关解复用器

IEEE Princeton Section Sarnoff Symposium Pub Date : 1995-04-28 DOI: 10.1109/SARNOF.1995.636754

K. I. Kang, T. Chang, I. Glesk, P. Prucnal

{"title":"Ultrafast all-optical wavelength and polarization independent demultiplexer","authors":"K. I. Kang, T. Chang, I. Glesk, P. Prucnal","doi":"10.1109/SARNOF.1995.636754","DOIUrl":"https://doi.org/10.1109/SARNOF.1995.636754","url":null,"abstract":"Recent developments in all-optical switching devices based on the interferometric principle are very promising for optical communication systems, especially those based on optical time division multiplexing system (OTDM), where a user is allowed to transmit or receive a data in a assigned time slot within a given time frame. One such device based on a Sagnac interferometer is called a Terahertz Optical Asymmetric Demultiplexer (the TOAD). Another device based on a Mach-Zehnder interferometer is a Symmetric Mach-Zehnder (SMZ). Both devices utilize large optical nonlinearities in the resonance regime of the semiconductor, therefore it is possible to operate these devices with a very small optical control pulse energy. The currently demonstrated TOAD can be switched with 0.8 pJ, and the SMZ with 11 pJ. We still can reduce the control pulse energy by optimizing and employing other nonlinear optical materials. The most critical problem associated with a slow recovery time of the resonance nonlinearities has been solved by a special geometrical location of a nonlinear optical element in the Sagnac interferometer, and two control pulses to do independent on and off switching operation for the Mach-Zehnder. We demonstrated a 10 ps switching window by counter-propagating the control and data pulses in the Mach-Zehnder interferometer using 0.65 pJ of control pulse energy. This device is advantageous in its superior rejection capability of the control signal. In terms of the possibility of integration, this device is expected to be a much simpler design than the previously demonstrated systems. Also the utilized optical nonlinear elements are semiconductor optical amplifiers, the data signal can be larger than the input. This may facilitate cascadability and fan-out capability.","PeriodicalId":118150,"journal":{"name":"IEEE Princeton Section Sarnoff Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131512651","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

Challenges for optoelectronic hardware in fiber-to-the home systems 光纤到户系统中光电硬件的挑战

IEEE Princeton Section Sarnoff Symposium Pub Date : 1995-04-28 DOI: 10.1109/SARNOF.1995.636758

C. Armiento, P. Melman, E. Bulat, M. Tabasky

引用次数: 0

2.7-μm InGaAsSb/AlGaAsSb laser diodes with continuous wave operation up to -39°c 2.7 μm InGaAsSb/AlGaAsSb激光二极管，连续波工作可达-39°c

IEEE Princeton Section Sarnoff Symposium Pub Date : 1995-04-28 DOI: 10.1109/SARNOF.1995.636775

D. Garbuzov, R. Martinelli, H. Lee, P. York, R. Menna, J. Connolly, S. Narayan, D. Capewell

引用次数: 4

The PCS Spectrum Auction PCS频谱拍卖

IEEE Princeton Section Sarnoff Symposium Pub Date : 1995-04-28 DOI: 10.1109/SARNOF.1995.636617

D.M. Poticny

{"title":"The PCS Spectrum Auction","authors":"D.M. Poticny","doi":"10.1109/SARNOF.1995.636617","DOIUrl":"https://doi.org/10.1109/SARNOF.1995.636617","url":null,"abstract":"Personal Communications Services (PCS) is a hot topic of discussion in the communication industry at this time. Many people and businesses are trying to determine the best way to participate in this industry. This includes existing telecommunications companies, cable television companies, power companies, small businesses, banks, entrepreneurs, and many people who would like to capitalize on the next \"miracle\" industry. PCS is viewed as the next major \"boom\" industry like cable television or the cellular phone industry and an opportunity not to be missed. With all this attention, what exactly is PCS and how will it be accomplished? This paper will discuss the history and build-up to PCS, the radio spectrum that is being auctioned by the government to support PCS, and the challenges facing those people and businesses who enter this business. The first auction is complete but legal issues are not closed. The second and third auctions Will follow. The cellular industry by attracting over 20 million customers has proven the need for mobiltty and personal communications. The challenges facing the new PCS industry will be even greater than for the cellular industry. We firmly believe that there is substantial unfilled demand and that the new PCS entrants will find new services and ways to attract customers. There is untapped potential in data, video, and competition with existing communications services. The risks are great but spectrum, like land, is limited so the rewards will be greater.","PeriodicalId":118150,"journal":{"name":"IEEE Princeton Section Sarnoff Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115380159","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

Dispersion properties of chiral optical fibers 手性光纤的色散特性

IEEE Princeton Section Sarnoff Symposium Pub Date : 1995-04-28 DOI: 10.1109/SARNOF.1995.636770

R. Qiu, I. Lu

引用次数: 1

Overcoming obstacles to design and fabricate integrated resonant channel-dropping filters 克服设计和制造集成谐振通道下降滤波器的障碍

IEEE Princeton Section Sarnoff Symposium Pub Date : 1995-04-28 DOI: 10.1109/SARNOF.1995.636760

J. Damask, J. Ferrera, V. Wong

{"title":"Overcoming obstacles to design and fabricate integrated resonant channel-dropping filters","authors":"J. Damask, J. Ferrera, V. Wong","doi":"10.1109/SARNOF.1995.636760","DOIUrl":"https://doi.org/10.1109/SARNOF.1995.636760","url":null,"abstract":"The integrated resonant channel-dropping filter was first proposed by H.A. Haus in 1991 for use in wavelength-division multiplexed (WDM) fiber-optic communication systems. The function of the filter is to spatially separate, or \"drop,\" just one channel from a WDM bit, stream without terminating or otherwise disturbing the remaining channels. The WDM bit stream is carried along the center rib waveguide. Only that channel, or wavelength band, that excites the two side-coupled quarter-wave shifted distributed Bragg reflector (QWS-DBR) resonators is removed from the bus to the left-most waveguide. The remaining channels do not excite the resonators and therefore travel through undisturbed. The action of dropping a single channel from the bus can be reversed to create a narrow-band channel-adding filter. The ability to add or drop a single channel from the entire WDM bit stream augments the repertoire of functions that are available to the WDM system architect. There are three critical optical parameters that must be properly interrelated during design and controlled during fabrication to build a channel-dropping filter having specific spectral characteristics. The three parameters are the grating strength, the evanescent waveguide-waveguide coupling strength, and the phase-velocity mismatch between the resonators and the bus. While e-beam and x-ray lithographies are used to control the length and width dimensions to the order of 10 nm, so too must the vertical dimensions be controlled to the order of 10 nm. This requires accurate control of film thicknesses and etch depths. To the extent that all of the dimensions and materials indices cannot be controlled to the requisite tolerance, a trimming technique is required.","PeriodicalId":118150,"journal":{"name":"IEEE Princeton Section Sarnoff Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126652174","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

Trends in wireless technology 无线技术的发展趋势

IEEE Princeton Section Sarnoff Symposium Pub Date : 1995-04-28 DOI: 10.1109/SARNOF.1995.636613

O. J. Benjamin

引用次数: 0

A new class of optical materials for holographic storage and beam steering 一类用于全息存储和光束导向的新型光学材料

IEEE Princeton Section Sarnoff Symposium Pub Date : 1995-04-28 DOI: 10.1109/SARNOF.1995.636740

R. Linke, R. Macdonald, G. Devlin, T. Thio, J. Chadi

引用次数: 0