Pub Date : 1900-01-01DOI: 10.1109/MWP.2002.1158906
T. Higashino, K. Tsukamoto, S. Komaki
In this paper, we experimentally demonstrate interference suppression with an optical polarity-reversing correlator (OPRC) in the DOS-CDMA (direct optical switching CDMA) ROF (radio-over-fibre) system, and investigate carrier to interference power ratio (CIR) performance.
{"title":"Experimental study of received signal performance in direct optical switching CDMA ROF system","authors":"T. Higashino, K. Tsukamoto, S. Komaki","doi":"10.1109/MWP.2002.1158906","DOIUrl":"https://doi.org/10.1109/MWP.2002.1158906","url":null,"abstract":"In this paper, we experimentally demonstrate interference suppression with an optical polarity-reversing correlator (OPRC) in the DOS-CDMA (direct optical switching CDMA) ROF (radio-over-fibre) system, and investigate carrier to interference power ratio (CIR) performance.","PeriodicalId":176293,"journal":{"name":"2002 International Topical Meeting on Microwave Photonics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126087112","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 : 1900-01-01DOI: 10.1109/MWP.2002.1158845
M. Tani, Michael Herrmannt, S. Kono, '. KiyomiSakai
In this paper the authors describe photoconductive (PC) antennas, with a special focus on bandwidth properties of PC antennas as THz radiation sources and detectors. They also describe applications of the pulsed THz radiation to imaging based on PC antennas.
{"title":"Generation and detection of terahertz pulsed radiation with photoconductive antennas and their application to imaging","authors":"M. Tani, Michael Herrmannt, S. Kono, '. KiyomiSakai","doi":"10.1109/MWP.2002.1158845","DOIUrl":"https://doi.org/10.1109/MWP.2002.1158845","url":null,"abstract":"In this paper the authors describe photoconductive (PC) antennas, with a special focus on bandwidth properties of PC antennas as THz radiation sources and detectors. They also describe applications of the pulsed THz radiation to imaging based on PC antennas.","PeriodicalId":176293,"journal":{"name":"2002 International Topical Meeting on Microwave Photonics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116152042","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 : 1900-01-01DOI: 10.1109/MWP.2002.1158900
S. Sales, J. Capmany, B. Ortega, D. Pastor
Here, we present an improved device for an SOA based photonic mixer, where two different SOA modulators are placed in tandem, separated by a lossy section. The SOAs are operated under a linear modulation regime. This device shows important advantages in terms of conversion gain over previously reported ones, and can be easily integrated. Furthermore, since it is based on the same technology as multi-electrode semiconductor lasers it is a potential low cost device since it can benefit from the economy of scale of this technology.
{"title":"Two stage integrated SOA modulators as efficient photonic mixers for microwave signals","authors":"S. Sales, J. Capmany, B. Ortega, D. Pastor","doi":"10.1109/MWP.2002.1158900","DOIUrl":"https://doi.org/10.1109/MWP.2002.1158900","url":null,"abstract":"Here, we present an improved device for an SOA based photonic mixer, where two different SOA modulators are placed in tandem, separated by a lossy section. The SOAs are operated under a linear modulation regime. This device shows important advantages in terms of conversion gain over previously reported ones, and can be easily integrated. Furthermore, since it is based on the same technology as multi-electrode semiconductor lasers it is a potential low cost device since it can benefit from the economy of scale of this technology.","PeriodicalId":176293,"journal":{"name":"2002 International Topical Meeting on Microwave Photonics","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126978849","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 : 1900-01-01DOI: 10.1109/MWP.2002.1158879
Chin Hee Lee, V. Postoyalko, T. O’Farrell
This paper presents an analysis of nonlinear distortion in radio-over-fibre (RoF) systems based on an AM-AM/PM behavioural model. Simulation results show similar characteristics to measured results that have been reported. The error vector magnitude (EVM) and spectral regrowth (ACPR) are theoretically analysed and their correlationships are verified by simulation. Uncoded BER degradations are also presented.
{"title":"Analysis and simulation of AM-AM/PM nonlinear distortion due to direct laser modulation in radio over fibre systems","authors":"Chin Hee Lee, V. Postoyalko, T. O’Farrell","doi":"10.1109/MWP.2002.1158879","DOIUrl":"https://doi.org/10.1109/MWP.2002.1158879","url":null,"abstract":"This paper presents an analysis of nonlinear distortion in radio-over-fibre (RoF) systems based on an AM-AM/PM behavioural model. Simulation results show similar characteristics to measured results that have been reported. The error vector magnitude (EVM) and spectral regrowth (ACPR) are theoretically analysed and their correlationships are verified by simulation. Uncoded BER degradations are also presented.","PeriodicalId":176293,"journal":{"name":"2002 International Topical Meeting on Microwave Photonics","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128103217","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 : 1900-01-01DOI: 10.1109/MWP.2002.1158873
B. Gwandu, W. Zhang, J.A.R. Williams
The microwave photonic response of a superstructured fiber Bragg grating is investigated. A bandpass response is achieved with the optical taps controlled by the combination of superstructured fiber grating characteristics and fiber dispersion. A rejection level of >45 dB is demonstrated.
{"title":"Implementation of microwave photonic filtering using a profiled superstructured fiber Bragg grating and dispersive fiber","authors":"B. Gwandu, W. Zhang, J.A.R. Williams","doi":"10.1109/MWP.2002.1158873","DOIUrl":"https://doi.org/10.1109/MWP.2002.1158873","url":null,"abstract":"The microwave photonic response of a superstructured fiber Bragg grating is investigated. A bandpass response is achieved with the optical taps controlled by the combination of superstructured fiber grating characteristics and fiber dispersion. A rejection level of >45 dB is demonstrated.","PeriodicalId":176293,"journal":{"name":"2002 International Topical Meeting on Microwave Photonics","volume":"10 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131775546","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 : 1900-01-01DOI: 10.1109/MWP.2002.1158875
T. Kawanishi, S. Oikawa, K. Higuma, M. Izutsu
We propose a tunable delay-line using an optical frequency shifter, and an optical loop. The optical frequency shifter consists of an optical single sideband modulator. The number of times light circulates in the loop can be controlled by the electric signal fed to the modulator. Packets of any lengths can go through our proposed delay-line without any collisions, even if the length of the packet is larger than that of the delay loop.
{"title":"Tunable optical delay-line using an optical frequency shifter with a single-sideband modulator","authors":"T. Kawanishi, S. Oikawa, K. Higuma, M. Izutsu","doi":"10.1109/MWP.2002.1158875","DOIUrl":"https://doi.org/10.1109/MWP.2002.1158875","url":null,"abstract":"We propose a tunable delay-line using an optical frequency shifter, and an optical loop. The optical frequency shifter consists of an optical single sideband modulator. The number of times light circulates in the loop can be controlled by the electric signal fed to the modulator. Packets of any lengths can go through our proposed delay-line without any collisions, even if the length of the packet is larger than that of the delay loop.","PeriodicalId":176293,"journal":{"name":"2002 International Topical Meeting on Microwave Photonics","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133873333","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 : 1900-01-01DOI: 10.1109/MWP.2002.1158919
V. Lavielle, L. Ménager, I. Lorgeré, J. Le Gouet, S. Tonda, D. Dolfi, J. Huignard
We demonstrate application of spectral hole burning to the spectral analysis of broadband radio frequency signals. The device operates on an optically carried RF signal and achieves the angular separation of the signal spectral components.
{"title":"Broadband radio-frequency spectrum analyzer based on spectral hole burning","authors":"V. Lavielle, L. Ménager, I. Lorgeré, J. Le Gouet, S. Tonda, D. Dolfi, J. Huignard","doi":"10.1109/MWP.2002.1158919","DOIUrl":"https://doi.org/10.1109/MWP.2002.1158919","url":null,"abstract":"We demonstrate application of spectral hole burning to the spectral analysis of broadband radio frequency signals. The device operates on an optically carried RF signal and achieves the angular separation of the signal spectral components.","PeriodicalId":176293,"journal":{"name":"2002 International Topical Meeting on Microwave Photonics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130358005","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 : 1900-01-01DOI: 10.1109/MWP.2002.1158857
C. Liu, A. Seeds, J. S. Chadha, P. Stavrinou, G. Parry, M. Whitehead, A. Krysa, J. Roberts
We have fabricated air-bridged modulators with bandwidths exceeding 10-GHz, the highest yet reported for InGaAsP/InGaAsP MQW AFPMs. Third-order intermodulation between the photodetected downlink signal and the modulated uplink signal is characterised for the first time.
{"title":"Normal-incidence 1.56-/spl mu/m MQW asymmetric Fabry-Perot modulator (AFPM) for passive picocells","authors":"C. Liu, A. Seeds, J. S. Chadha, P. Stavrinou, G. Parry, M. Whitehead, A. Krysa, J. Roberts","doi":"10.1109/MWP.2002.1158857","DOIUrl":"https://doi.org/10.1109/MWP.2002.1158857","url":null,"abstract":"We have fabricated air-bridged modulators with bandwidths exceeding 10-GHz, the highest yet reported for InGaAsP/InGaAsP MQW AFPMs. Third-order intermodulation between the photodetected downlink signal and the modulated uplink signal is characterised for the first time.","PeriodicalId":176293,"journal":{"name":"2002 International Topical Meeting on Microwave Photonics","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133584508","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 : 1900-01-01DOI: 10.1109/MWP.2002.1158856
T. Nakazawa
The recent progress in the development of external LiNbO/sub 3/ modulators is summarized here. Especially, we focus on an approach to reduce drive voltage and enhance frequency performance.
{"title":"Low drive voltage and broad-band LiNbO/sub 3/ modulator","authors":"T. Nakazawa","doi":"10.1109/MWP.2002.1158856","DOIUrl":"https://doi.org/10.1109/MWP.2002.1158856","url":null,"abstract":"The recent progress in the development of external LiNbO/sub 3/ modulators is summarized here. Especially, we focus on an approach to reduce drive voltage and enhance frequency performance.","PeriodicalId":176293,"journal":{"name":"2002 International Topical Meeting on Microwave Photonics","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116457841","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 : 1900-01-01DOI: 10.1109/MWP.2002.1158925
Yan Han, B. Jalali
The time-bandwidth product of the time stretched analog-to-digital converter is modeled in terms of its dependence on physical system parameters. Using the time-bandwidth product as the figure of merit, the performances of baseband double-sideband modulation, passband double-sideband modulation, and single-sideband modulation are compared and quantified.
{"title":"Time-bandwidth product of the time stretched analog-to-digital converter","authors":"Yan Han, B. Jalali","doi":"10.1109/MWP.2002.1158925","DOIUrl":"https://doi.org/10.1109/MWP.2002.1158925","url":null,"abstract":"The time-bandwidth product of the time stretched analog-to-digital converter is modeled in terms of its dependence on physical system parameters. Using the time-bandwidth product as the figure of merit, the performances of baseband double-sideband modulation, passband double-sideband modulation, and single-sideband modulation are compared and quantified.","PeriodicalId":176293,"journal":{"name":"2002 International Topical Meeting on Microwave Photonics","volume":"283 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123438691","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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