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2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference最新文献

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Microwave frequency measurement utilising frequency to time mapping 微波频率测量利用频率到时间的映射
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference Pub Date : 2008-11-05 DOI: 10.1109/MWP.2008.4666704
L. Nguyen
{"title":"Microwave frequency measurement utilising frequency to time mapping","authors":"L. Nguyen","doi":"10.1109/MWP.2008.4666704","DOIUrl":"https://doi.org/10.1109/MWP.2008.4666704","url":null,"abstract":"A novel microwave photonic frequency measurement (MPFM) receiver concept is proposed and demonstrated. This photonic technique directly maps the frequency information of the incoming microwave signal to a time delay utilising a dispersive medium. The measurement of the observed time delay directly equates to value of the input microwave frequency. The frequency-time mapping function from a chirped fiber Bragg grating (FBG) having a dispersion parameter of 1000 ps/nm was measured. Excellent agreement between measurement and theory is demonstrated within the bounds of the group delay ripple (GDR) of the chirped FBG.","PeriodicalId":115448,"journal":{"name":"2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133154301","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: 7
Linear microwave downconverting RF-to-bits link 线性微波下变频射频到比特链路
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference Pub Date : 2008-11-05 DOI: 10.1109/MWP.2008.4666622
T. Clark, M. Dennis
{"title":"Linear microwave downconverting RF-to-bits link","authors":"T. Clark, M. Dennis","doi":"10.1109/MWP.2008.4666622","DOIUrl":"https://doi.org/10.1109/MWP.2008.4666622","url":null,"abstract":"We present a RF digital receiver offering fiber optic transport of microwave signals and the linear conversion of the information band to the digital domain with high resolution. The architecture utilizes linear wideband electro-optic phase encoding, quadrature detection/downconversion and digital signal processing to achieve unprecedented linearity. Applications, results, technology comparisons and directions for future work will be discussed.","PeriodicalId":115448,"journal":{"name":"2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129615325","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: 13
Optical control of microstrip stub on silicon substrate using 650 nm and 850 nm wavelengths illumination 650 nm和850 nm波长照明下硅衬底微带短段的光学控制
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference Pub Date : 2008-11-05 DOI: 10.1109/MWP.2008.4666655
A. Bhadauria, E. Sharma, A. Verma, B.R. Singh
{"title":"Optical control of microstrip stub on silicon substrate using 650 nm and 850 nm wavelengths illumination","authors":"A. Bhadauria, E. Sharma, A. Verma, B.R. Singh","doi":"10.1109/MWP.2008.4666655","DOIUrl":"https://doi.org/10.1109/MWP.2008.4666655","url":null,"abstract":"In this paper we have studied the optical control of transmission behaviour of lambdag/4 microstrip stub on a microstrip line fabricated on high resistivity silicon substrate by illuminating open end of lambdag/4 stub. Here, we have used two different optical wavelength sources 650 nm and 850 nm to illuminate the open end of stub. An optical illumination at the end of an open lambdag/4 stub on a microstrip line has been shown to control the transmitted power at the design frequency which can be used as an optically controlled rf switching or attenuator and further can be used as an optically controlled narrow band matching and stub based filters. In addition to experimental measurement we have also carried out modelling of optically generated load at the end for both the wavelengths along with the simulation on Ansoft Maxwell simulator. The measurement results compare well with those predicted by a simulation carried out on the Ansoft Maxwell Ensemble for both the wavelengths.","PeriodicalId":115448,"journal":{"name":"2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127235747","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
A study on transmission of RF signals over a turbulent free space optical link 湍流自由空间光链路上射频信号传输的研究
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference Pub Date : 2008-11-05 DOI: 10.1109/MWP.2008.4666664
P. Dat, A.M. Shah, K. Kazaura, K. Wakamori, T. Suzuki, K. Takahashi, M. Matsumoto, Y. Aburakawa, T. Nakamura, T. Higashino, K. Tsukamoto, S. Komaki
{"title":"A study on transmission of RF signals over a turbulent free space optical link","authors":"P. Dat, A.M. Shah, K. Kazaura, K. Wakamori, T. Suzuki, K. Takahashi, M. Matsumoto, Y. Aburakawa, T. Nakamura, T. Higashino, K. Tsukamoto, S. Komaki","doi":"10.1109/MWP.2008.4666664","DOIUrl":"https://doi.org/10.1109/MWP.2008.4666664","url":null,"abstract":"In a ubiquitous network society, a universal platform is necessary to satisfy customerspsila increased demand on communication at any-time, anywhere and any-situation. Radio on fiber (RoF) technologies can realize a cost effective universal platform for ubiquitous wireless services. RoF networks can also be extended to radio on free space optics (RoFSO) providing communication links for heterogeneous wireless services where it is not easy or feasible to install optical fiber. In this paper, we present an experimental study on transmission of RF signals over a turbulent FSO channel by using off-the-shelf radio frequency - FSO (RF-FSO) antennas. The performance results show the potential of FSO links for transmission of RF signals and are also used as a benchmark in designing, predicting and evaluating an advanced dense wavelength division multiplexing (DWDM) RoFSO antenna capable of transporting multiple RF signals we are developing. An analytical modeling of the system is also conducted to confirm the suitability of the system and a good result is obtained compared with experimental data under weak turbulence condition.","PeriodicalId":115448,"journal":{"name":"2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126755502","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: 16
Evaluation of effects of MZM nonlinearity on QAM and OFDM signals in RoF transmitter RoF发射机中MZM非线性对QAM和OFDM信号影响的评价
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference Pub Date : 2008-11-05 DOI: 10.1109/MWP.2008.4666642
H. Yang, J. Zeng, Y. Zheng, H. Jung, B. Huiszoon, J. V. van Zantvoort, E. Tangdiongga, A. Koonen
{"title":"Evaluation of effects of MZM nonlinearity on QAM and OFDM signals in RoF transmitter","authors":"H. Yang, J. Zeng, Y. Zheng, H. Jung, B. Huiszoon, J. V. van Zantvoort, E. Tangdiongga, A. Koonen","doi":"10.1109/MWP.2008.4666642","DOIUrl":"https://doi.org/10.1109/MWP.2008.4666642","url":null,"abstract":"We present, both numerically and experimentally, the nonlinearity effect of the intensity modulator in RoF transmitters through the comparison between single-carrier QAM and multi-carrier OFDM signals. The acceptable RF power level of the multi-carrier OFDM signal is 2 dB less compared with the single-carrier signal for the same EVM penalty of 1%, indicating the degradation due to inter-modulation products caused by the modulator nonlinearity for OFDM RoF systems.","PeriodicalId":115448,"journal":{"name":"2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122295494","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: 33
An experimental investigation of applying MIMO to RoF ubiquitous antenna system MIMO应用于RoF泛在天线系统的实验研究
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference Pub Date : 2008-11-05 DOI: 10.1109/MWP.2008.4666671
T. Yamakami, T. Higashino, K. Tsukamoto, S. Komaki
{"title":"An experimental investigation of applying MIMO to RoF ubiquitous antenna system","authors":"T. Yamakami, T. Higashino, K. Tsukamoto, S. Komaki","doi":"10.1109/MWP.2008.4666671","DOIUrl":"https://doi.org/10.1109/MWP.2008.4666671","url":null,"abstract":"This paper proposes the application of MIMO to RoF ubiquitous antenna system. As a result of locating remote antennas ubiquitously, it is experimentally found that the effect of MIMO is maintained and throughput performance is improved.","PeriodicalId":115448,"journal":{"name":"2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131925649","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: 23
Photonic DPASK/QAM signal generation at microwave/millimeter-wave band for Radio-over-Fiber applications 光纤无线电应用中微波/毫米波波段光子DPASK/QAM信号的产生
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference Pub Date : 2008-11-05 DOI: 10.1109/MWP.2008.4666650
Ye Zhang, Kun Xu, Ran Zhu, Hao Huang, Jie Yin, Jian Wu, Jintong Lin
{"title":"Photonic DPASK/QAM signal generation at microwave/millimeter-wave band for Radio-over-Fiber applications","authors":"Ye Zhang, Kun Xu, Ran Zhu, Hao Huang, Jie Yin, Jian Wu, Jintong Lin","doi":"10.1109/MWP.2008.4666650","DOIUrl":"https://doi.org/10.1109/MWP.2008.4666650","url":null,"abstract":"We propose and experimentally demonstrate a novel photonic scheme to generate differential-phase amplitude-shift keying (DPASK) or circular quadrature amplitude modulation (QAM) signal at microwave/millimeter-wave band for Radio-over-Fiber applications. In our proposed scheme, the electronic driven circuits are greatly simplified by employing photonic vector modulation technique in which only an electro-optical phase modulator and two Mach-Zehnder modulators are needed.","PeriodicalId":115448,"journal":{"name":"2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114667908","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
Data throughput tripling by Feed-Forward Equalization and photonic QPSK in a 7 Gbps single-carrier RoF link at 60 GHz 采用前馈均衡和光子QPSK技术实现60ghz频率下7gbps单载波RoF链路数据吞吐量三倍化
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference Pub Date : 2008-11-05 DOI: 10.1109/MWP.2008.4666674
A. Ng'oma, M. Sauer, D. Thelen, J. George
{"title":"Data throughput tripling by Feed-Forward Equalization and photonic QPSK in a 7 Gbps single-carrier RoF link at 60 GHz","authors":"A. Ng'oma, M. Sauer, D. Thelen, J. George","doi":"10.1109/MWP.2008.4666674","DOIUrl":"https://doi.org/10.1109/MWP.2008.4666674","url":null,"abstract":"This paper investigates the use of feed-forward equalization (FFE) to combat performance limitations imposed by non-uniform channel characteristics in a wideband vector signal-modulated single-carrier radio-over-fiber (RoF) system at 60 GHz. A direct photonic QPSK modulator was implemented at 60 GHz and used in the system experiments. By combining photonic QPSK modulation and FFE, 7 Gbps data throughput was achieved over a channel bandwidth of less than 2 GHz, representing a bit-rate increase of three times over simple amplitude shift keying (ASK) modulation. The photonic QPSK modulator incorporates frequency doubling, leading to the simplification of the transmitter. In addition, frequency doubling extends the fiber length limit imposed by signal fading due to chromatic dispersion. FFE is simpler to implement and is less computation intensive than, for instance OFDM. Transmission experiments over 2 km of fiber were conducted.","PeriodicalId":115448,"journal":{"name":"2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125023405","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: 8
150 GS/s real-time oscilloscope using a photonic front end 150gs /s实时示波器采用光子前端
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference Pub Date : 2008-11-05 DOI: 10.1109/MWP.2008.4666628
J. Chou, J. Conway, G. Sefler, G. Valley, B. Jalali
{"title":"150 GS/s real-time oscilloscope using a photonic front end","authors":"J. Chou, J. Conway, G. Sefler, G. Valley, B. Jalali","doi":"10.1109/MWP.2008.4666628","DOIUrl":"https://doi.org/10.1109/MWP.2008.4666628","url":null,"abstract":"We demonstrate an optical front end technology that multiplies the sampling rate of a real-time oscilloscope by a factor of three. Our approach uses an optical pre-processor to compress the signal bandwidth of continuous-time high speed RF waveforms. To operate in continuous-time mode, the optical signal, which carries the RF, must be segmented and demultiplexed into an array of N parallel channels. In prior work, large spectral overlap between channels was needed for calibration and this limited the multiplication factor, M, to values far below the maximum value of N, which is limited by the number of back-end digitizers. In this paper, we demonstrate a novel technique using temporal overlap between channels and achieve higher multiplication. The sampling rate of a four-channel 50 GS/s real-time oscilloscope is increased by a factor of 3, enabling us to digitize a 47 GHz tone at 150 GS/s. To our knowledge, this is a record in continuous time RF digitization.","PeriodicalId":115448,"journal":{"name":"2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference","volume":"42 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123222014","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: 27
ASKAP photonic requirements ASKAP光子要求
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference Pub Date : 2008-11-05 DOI: 10.1109/MWP.2008.4666635
R. Beresford
{"title":"ASKAP photonic requirements","authors":"R. Beresford","doi":"10.1109/MWP.2008.4666635","DOIUrl":"https://doi.org/10.1109/MWP.2008.4666635","url":null,"abstract":"The Australian Square Kilometre Array Pathfinder project will be a radio astronomy synthesis array covering the frequency range 700MHz - 1800 MHz comprised of at least thirty 12 m diameter parabolic reflector antennas located in the remote radio quiet desert Midwest region of Western Australia. This paper looks at the architectural requirements for such a system and the role of cost effective photonics solutions required to transport signals within each antenna, intra-array and to the outside world. Photonics solutions include RF over fibre, short-haul and long-haul wavelength division multiplexed (WDM) point to point digital links. A key enabling technology for ASKAP is the formation of multiple beams within the primary field of view (FOV) of the antenna using broadband focal plane array (FPA) feed techniques. At present this is in the experimental phase of development.","PeriodicalId":115448,"journal":{"name":"2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123732641","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: 16
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