Monolithic semiconductor lasers are capable of ML at frequencies over a very wide range, but those working at frequencies of 10-30 GHz have recently attracted considerable attention. However, because the repetition rate is inversely proportional to the cavity length, very long cavities (mm) are required to achieved such "low" repetition rates. In this paper we report the advantages of long semiconductor mode-locked lasers (4-5 mm) which use a low-loss passive waveguide, extended cavity laser conJiguration (ECL), instead of having the whole cavity active, all active cavity laser conjiguration (AAL).
{"title":"Monolithically Integrated Passive Waveguides Made By Impurity-free Vacancy Disordering: An Improvement In Mode-locked Semiconductor Lasers","authors":"F. Camacho, E. Avrutin, A. Bryce, J. Marsh","doi":"10.1109/MWP.1997.740225","DOIUrl":"https://doi.org/10.1109/MWP.1997.740225","url":null,"abstract":"Monolithic semiconductor lasers are capable of ML at frequencies over a very wide range, but those working at frequencies of 10-30 GHz have recently attracted considerable attention. However, because the repetition rate is inversely proportional to the cavity length, very long cavities (mm) are required to achieved such \"low\" repetition rates. In this paper we report the advantages of long semiconductor mode-locked lasers (4-5 mm) which use a low-loss passive waveguide, extended cavity laser conJiguration (ECL), instead of having the whole cavity active, all active cavity laser conjiguration (AAL).","PeriodicalId":280865,"journal":{"name":"International Topical Meeting on Microwave Photonics (MWP1997)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121774183","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}
Future telecommunication services inevitably will lead to a varying mixture of broadcasting and interactive services with a wide diversity of bitrate, upand downlink traffic ratio and latency requirements. Therefore, various transport techniques, ATM, LAN traffic and Internet access have to be integrated in a common system architecture. To be economically successful all local loop systems have to support such a flexibility. A smooth service deployment with evolution is mandatory, e.g. starting with digital video broadcasting, then moving gradually towards fully interactive broadband ATM solutions, but not forgetting the medium bandwidth applications needing 2 Mbitls per service and per user.
{"title":"mm-wave Photonics - The Enabling Technology For Broadband Wireless Local Loop Systems","authors":"R. Heidemann","doi":"10.1109/MWP.1997.740220","DOIUrl":"https://doi.org/10.1109/MWP.1997.740220","url":null,"abstract":"Future telecommunication services inevitably will lead to a varying mixture of broadcasting and interactive services with a wide diversity of bitrate, upand downlink traffic ratio and latency requirements. Therefore, various transport techniques, ATM, LAN traffic and Internet access have to be integrated in a common system architecture. To be economically successful all local loop systems have to support such a flexibility. A smooth service deployment with evolution is mandatory, e.g. starting with digital video broadcasting, then moving gradually towards fully interactive broadband ATM solutions, but not forgetting the medium bandwidth applications needing 2 Mbitls per service and per user.","PeriodicalId":280865,"journal":{"name":"International Topical Meeting on Microwave Photonics (MWP1997)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128895120","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}
C. Gonzalez, C. Palma, J. Thuret, J. Benchimol, M. Riet
We present an experimental study of a phototransistor (HPT) based on the heterojunction bipolar transistor technology (HBT). The developed HPT yields an internal gain of 14 dl3 at 20 GHz with an internal gain cut-off fiequency of 33 GHz. Equivalent circuit analysis shows good agreement with experimental results.
{"title":"InP/InGaAs HBT phototransistor as optoelectronic converter up to millimetre-wave bands","authors":"C. Gonzalez, C. Palma, J. Thuret, J. Benchimol, M. Riet","doi":"10.1109/MWP.1997.740288","DOIUrl":"https://doi.org/10.1109/MWP.1997.740288","url":null,"abstract":"We present an experimental study of a phototransistor (HPT) based on the heterojunction bipolar transistor technology (HBT). The developed HPT yields an internal gain of 14 dl3 at 20 GHz with an internal gain cut-off fiequency of 33 GHz. Equivalent circuit analysis shows good agreement with experimental results.","PeriodicalId":280865,"journal":{"name":"International Topical Meeting on Microwave Photonics (MWP1997)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122874175","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":"Intensity Squeezed-light Generation By Non-fluctuating Current Injection In Semiconductor Lasers","authors":"P. Gallion, F. Jérémie","doi":"10.1109/MWP.1997.740279","DOIUrl":"https://doi.org/10.1109/MWP.1997.740279","url":null,"abstract":"","PeriodicalId":280865,"journal":{"name":"International Topical Meeting on Microwave Photonics (MWP1997)","volume":"23 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131688208","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":"A Study Of The Propagation Characteristics Of A Metal Electrode At Optical Wavelengths","authors":"P. Berini, K. Wu","doi":"10.1109/MWP.1997.740246","DOIUrl":"https://doi.org/10.1109/MWP.1997.740246","url":null,"abstract":"","PeriodicalId":280865,"journal":{"name":"International Topical Meeting on Microwave Photonics (MWP1997)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131201045","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":"A Consideration On Radio highway networks using FDM-TDM conversion scheme","authors":"Y. Shoji, K. Tsukamoto, S. Komaki","doi":"10.1109/MWP.1997.740266","DOIUrl":"https://doi.org/10.1109/MWP.1997.740266","url":null,"abstract":"","PeriodicalId":280865,"journal":{"name":"International Topical Meeting on Microwave Photonics (MWP1997)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127549573","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":"Advanced Personal Communication System Using Optical Signal Processing Multibearn Antennas","authors":"K. Inagaki, H. Kawarnura, N. Imail, Y. Karasawa","doi":"10.1109/MWP.1997.740271","DOIUrl":"https://doi.org/10.1109/MWP.1997.740271","url":null,"abstract":"","PeriodicalId":280865,"journal":{"name":"International Topical Meeting on Microwave Photonics (MWP1997)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124135692","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":"Dual Lightwave Technique For Optical Generation And Transport Of Wireless Signals","authors":"K. Kitayama, T. Kuri","doi":"10.1109/MWP.1997.740222","DOIUrl":"https://doi.org/10.1109/MWP.1997.740222","url":null,"abstract":"","PeriodicalId":280865,"journal":{"name":"International Topical Meeting on Microwave Photonics (MWP1997)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124432699","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}
R. Stephens, J. Lee, G. Tangonan, I. Newberg, H. T. Wang
A number of optical beamforming techniques are currently being pursued which make use of low loss, low dispersion, single mode fiber to construct wide-band feed networks for phased array antennas [ l ] . The photonic RF mixing feed is one promising approach which uses the feed network itself to produce phased signals required for beam scanning. This method uses two fiber manifold networks to produce and to distribute two sets of RF modulated optical control signals to the antenna elements. The control signals are subsequently photodetected, and then mixed and filtered in the RF domain to provide each element with the proper output frequency and phase for beam scanning. As was shown in the initial L-band demonstration of this technique (21, the inter-element phase varies linearly with the sum of the two control frequencies and the output frequency is equal to their difference. Subsequent investigations of this technique 13-51 found similar single-beam phase behavior.
{"title":"Photonic RF Mixing Food For Multibeam Arrays","authors":"R. Stephens, J. Lee, G. Tangonan, I. Newberg, H. T. Wang","doi":"10.1109/MWP.1997.740290","DOIUrl":"https://doi.org/10.1109/MWP.1997.740290","url":null,"abstract":"A number of optical beamforming techniques are currently being pursued which make use of low loss, low dispersion, single mode fiber to construct wide-band feed networks for phased array antennas [ l ] . The photonic RF mixing feed is one promising approach which uses the feed network itself to produce phased signals required for beam scanning. This method uses two fiber manifold networks to produce and to distribute two sets of RF modulated optical control signals to the antenna elements. The control signals are subsequently photodetected, and then mixed and filtered in the RF domain to provide each element with the proper output frequency and phase for beam scanning. As was shown in the initial L-band demonstration of this technique (21, the inter-element phase varies linearly with the sum of the two control frequencies and the output frequency is equal to their difference. Subsequent investigations of this technique 13-51 found similar single-beam phase behavior.","PeriodicalId":280865,"journal":{"name":"International Topical Meeting on Microwave Photonics (MWP1997)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122175870","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}
A. Daryoush, K. Sato, Y. Nakasuga, K. Horikawa, H. Ogawa
{"title":"Fiber Optic Links For Ka-band Communication Satellites","authors":"A. Daryoush, K. Sato, Y. Nakasuga, K. Horikawa, H. Ogawa","doi":"10.1109/MWP.1997.740264","DOIUrl":"https://doi.org/10.1109/MWP.1997.740264","url":null,"abstract":"","PeriodicalId":280865,"journal":{"name":"International Topical Meeting on Microwave Photonics (MWP1997)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115641270","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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