Pub Date : 2014-12-22DOI: 10.1109/MWP.2014.6994522
C. Braggio, Francesco A. Borghesani, G. Carugno
We report about a technique to generate microwave radiation by the irradiation of a nonlinear optical crystal with uniformly spaced, ultrashort optical pulses delivered by a mode-locked laser. By systematically studying the laser polarization and intensity dependence of the microwave signal it is possible to show that it is a nonlinear phenomenon and that it originates from optical rectification. We report in this work wide bandwidth detection of the generated microwave signals, achieved inside a coaxial copper structure.
{"title":"Microwave signal generation based on the interaction of mode-locked laser pulses with a nonlinear optical crystal","authors":"C. Braggio, Francesco A. Borghesani, G. Carugno","doi":"10.1109/MWP.2014.6994522","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994522","url":null,"abstract":"We report about a technique to generate microwave radiation by the irradiation of a nonlinear optical crystal with uniformly spaced, ultrashort optical pulses delivered by a mode-locked laser. By systematically studying the laser polarization and intensity dependence of the microwave signal it is possible to show that it is a nonlinear phenomenon and that it originates from optical rectification. We report in this work wide bandwidth detection of the generated microwave signals, achieved inside a coaxial copper structure.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"661 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115115616","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 : 2014-12-22DOI: 10.1109/MWP.2014.6994540
S. Futatsumori, K. Morioka, A. Kohmura, K. Okada, N. Yonemoto
Based on radio-over-fiber (RoF) technology, we have proposed a novel architecture foreign object debris (FOD) detection system. The FODs on the airport surface may cause damage to aircraft and must be immediately removed. The optically-connected millimeter-wave radar with separated front-ends enables both low-cost and high-detection performance. In this paper, the feasibility and effectiveness of the 96 GHz optically-connected millimeter-wave radar is experimentally confirmed through the target detection test on the airport surface. The distributed millimeter-wave radar system, which is connected by the RoF converter, is fabricated. In addition, the radar reflectors, which are located on the apron of the Sendai airport, are successfully detected by the radar system.
{"title":"Experimental feasibility study of 96 GHz FMCW millimeter-wave radar based upon radio-over-fiber technology-fundamental radar reflector detection test on the Sendai airport surface-","authors":"S. Futatsumori, K. Morioka, A. Kohmura, K. Okada, N. Yonemoto","doi":"10.1109/MWP.2014.6994540","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994540","url":null,"abstract":"Based on radio-over-fiber (RoF) technology, we have proposed a novel architecture foreign object debris (FOD) detection system. The FODs on the airport surface may cause damage to aircraft and must be immediately removed. The optically-connected millimeter-wave radar with separated front-ends enables both low-cost and high-detection performance. In this paper, the feasibility and effectiveness of the 96 GHz optically-connected millimeter-wave radar is experimentally confirmed through the target detection test on the airport surface. The distributed millimeter-wave radar system, which is connected by the RoF converter, is fabricated. In addition, the radar reflectors, which are located on the apron of the Sendai airport, are successfully detected by the radar system.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115681607","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 : 2014-12-22DOI: 10.1109/MWP.2014.6994488
G. Cincotti, S. Shimizu, N. Wada, H. Uenohara, K. Hattori, M. Okuno, S. Mino, A. Himeno, T. Murakawa, T. Kodama, T. Nagashima, M. Hasegawa, T. Konishi
A pioneering energy-efficient all-optical system to transform an OFDM signal into an OTDM data flow is proposed and experimentally demonstrated for the first time, based on an innovative fully passive AWG device that implements the fractional Fourier transform.
{"title":"OFDM to OTDM conversion by fractional Fourier transform","authors":"G. Cincotti, S. Shimizu, N. Wada, H. Uenohara, K. Hattori, M. Okuno, S. Mino, A. Himeno, T. Murakawa, T. Kodama, T. Nagashima, M. Hasegawa, T. Konishi","doi":"10.1109/MWP.2014.6994488","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994488","url":null,"abstract":"A pioneering energy-efficient all-optical system to transform an OFDM signal into an OTDM data flow is proposed and experimentally demonstrated for the first time, based on an innovative fully passive AWG device that implements the fractional Fourier transform.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121813760","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 : 2014-12-22DOI: 10.1109/MWP.2014.6994559
H. Chung, Seunghyun Cho, Changyo Han, Sangsoo Lee, J. Lee, Jong Hyun Lee
We report a design of RoF based mobile fronthaul link considering quality of optical link and LTE/LTE-A signal simultaneously. The requirement of CNR in analog link supporting LTE/LTE-A services is presented, and effects of analog link quality on LTE/LTE-A signal is investigated. The EVM measurement after transmission of LTE-A signal with various numbers of intermediate frequency over 20 km SMF link is also presented.
提出了一种同时考虑光链路和LTE/LTE- a信号质量的基于RoF的移动前传链路设计方案。提出了支持LTE/LTE- a业务的模拟链路中CNR的要求，并研究了模拟链路质量对LTE/LTE- a信号的影响。给出了在20 km SMF链路上传输不同中频数的LTE-A信号后的EVM测量。
{"title":"Design of RoF based mobile fronthaul link with multi-IF carrier for LTE/LTE-A signal transmission","authors":"H. Chung, Seunghyun Cho, Changyo Han, Sangsoo Lee, J. Lee, Jong Hyun Lee","doi":"10.1109/MWP.2014.6994559","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994559","url":null,"abstract":"We report a design of RoF based mobile fronthaul link considering quality of optical link and LTE/LTE-A signal simultaneously. The requirement of CNR in analog link supporting LTE/LTE-A services is presented, and effects of analog link quality on LTE/LTE-A signal is investigated. The EVM measurement after transmission of LTE-A signal with various numbers of intermediate frequency over 20 km SMF link is also presented.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124261271","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 : 2014-12-22DOI: 10.1109/MWP.2014.6994544
Minghua Cao, Jianqiang Li, Kun Xu, Yitang Dai, Feifei Yin, Jintong Lin
We have experimentally presented a novel radio-over-fiber (RoF) based digital receiver architecture for coherent heterodyne detection. It demonstrates the application of using bandpass sampling in a RoF communications system to overcome the high sampling rate requirement of conventional receivers and front-end hardware dependency. In particular, we modified the uniform bandpass sampling theorem to cope with frequency offset produced by independent free running optical local oscillator. Thereafter, a 40Mbit/s QPSK modulated data signal at 2.4GHz RF carrier frequency is experimentally demonstrated by using phase modulated and digital signal processing aided RoF links.
{"title":"Bandpass Sampling in digital coherent receiver with free-running local oscillator laser for phase modulated radio-over-fiber systems","authors":"Minghua Cao, Jianqiang Li, Kun Xu, Yitang Dai, Feifei Yin, Jintong Lin","doi":"10.1109/MWP.2014.6994544","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994544","url":null,"abstract":"We have experimentally presented a novel radio-over-fiber (RoF) based digital receiver architecture for coherent heterodyne detection. It demonstrates the application of using bandpass sampling in a RoF communications system to overcome the high sampling rate requirement of conventional receivers and front-end hardware dependency. In particular, we modified the uniform bandpass sampling theorem to cope with frequency offset produced by independent free running optical local oscillator. Thereafter, a 40Mbit/s QPSK modulated data signal at 2.4GHz RF carrier frequency is experimentally demonstrated by using phase modulated and digital signal processing aided RoF links.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127203612","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 : 2014-12-22DOI: 10.1109/MWP.2014.6994527
H. Kiuchi
In a broadband signal transmission through an optical fiber, the propagation speed depends on the wavelength due to chromatic dispersion caused by external disturbances. Chromatic dispersion distorts the broadband signal. A wide-bandwidth, more than 1 THz, chromatic dispersion measurement method using two optical combs having slightly different frequency spacing has been developed.
{"title":"A wide-bandwidth chromatic dispersion measurement method","authors":"H. Kiuchi","doi":"10.1109/MWP.2014.6994527","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994527","url":null,"abstract":"In a broadband signal transmission through an optical fiber, the propagation speed depends on the wavelength due to chromatic dispersion caused by external disturbances. Chromatic dispersion distorts the broadband signal. A wide-bandwidth, more than 1 THz, chromatic dispersion measurement method using two optical combs having slightly different frequency spacing has been developed.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122966818","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 : 2014-12-22DOI: 10.1109/MWP.2014.6994539
Jianbin Fu, Fangzheng Zhang, Dan Zhu, Jianjiang Zhou, S. Pan
A photonic-assisted transceiver with wavelength reuse for distributed ultra-wideband (UWB) radar is proposed and demonstrated. The transceiver converts an input optical phase modulated signal into an optical UWB pulse train based on phase modulation to intensity modulation conversion using a fiber Bragg grating, and performs wavelength reuse by re-modulating the phase modulated optical signal via an intensity modulator. The transceiver is applied in a UWB ranging radar. A centimeter level accuracy is achieved.
{"title":"A photonic-assisted transceiver with wavelength reuse for distributed UWB radar","authors":"Jianbin Fu, Fangzheng Zhang, Dan Zhu, Jianjiang Zhou, S. Pan","doi":"10.1109/MWP.2014.6994539","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994539","url":null,"abstract":"A photonic-assisted transceiver with wavelength reuse for distributed ultra-wideband (UWB) radar is proposed and demonstrated. The transceiver converts an input optical phase modulated signal into an optical UWB pulse train based on phase modulation to intensity modulation conversion using a fiber Bragg grating, and performs wavelength reuse by re-modulating the phase modulated optical signal via an intensity modulator. The transceiver is applied in a UWB ranging radar. A centimeter level accuracy is achieved.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122016593","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 : 2014-12-22DOI: 10.1109/MWP.2014.6994504
T. Umezawa, K. Akahane, N. Yamamoto, A. Kanno, K. Jitsuno, N. Shibagaki, T. Kawanishi
We have developed a high-conversion-gain analog photo receiver for millimeter-wave radio-over-fiber applications. The performance was tested with an optical back-to-back configuration at a symbol rate of 1.76-2.2 Gbaud in π/2-shift BPSK and 16-QAM at a single carrier frequency of 32 GHz.
{"title":"High-performance analog photo receiver for millimeter-wave radio-over-fiber applications","authors":"T. Umezawa, K. Akahane, N. Yamamoto, A. Kanno, K. Jitsuno, N. Shibagaki, T. Kawanishi","doi":"10.1109/MWP.2014.6994504","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994504","url":null,"abstract":"We have developed a high-conversion-gain analog photo receiver for millimeter-wave radio-over-fiber applications. The performance was tested with an optical back-to-back configuration at a symbol rate of 1.76-2.2 Gbaud in π/2-shift BPSK and 16-QAM at a single carrier frequency of 32 GHz.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128275078","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 : 2014-12-22DOI: 10.1109/MWP.2014.6994526
K. Ikeda
It is known that lightning causes damage to microwave radio equipments used by electric power industry in Japan. We have proposed a system configuration using optical fiber cables instead of metal waveguides in order to protect microwave radio equipment from lightning. In this paper, an experimental demonstration using transmitting radio on fiber (RoF) link and receiving RoF link is introduced and measured total communication characteristics are also reported. In the experiments, antenna side optical to electrical (O/E) and electric to optical (E/O) converters were worked by power over fibers. We have successfully confirmed more than 37dB carrier-to-noise ratio (CNR) under the 26dB dynamic range of received signal strength of 6.74GHz, 64QAM (quadrature amplitude modulation), 37.5Mbps radio frequency (RF) signal. This result shows the proposed configuration can perform applicable communication quality.
{"title":"Lightning protection of microwave radio equipment using radio on fiber and power over fiber experimental demonstration of communication quality","authors":"K. Ikeda","doi":"10.1109/MWP.2014.6994526","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994526","url":null,"abstract":"It is known that lightning causes damage to microwave radio equipments used by electric power industry in Japan. We have proposed a system configuration using optical fiber cables instead of metal waveguides in order to protect microwave radio equipment from lightning. In this paper, an experimental demonstration using transmitting radio on fiber (RoF) link and receiving RoF link is introduced and measured total communication characteristics are also reported. In the experiments, antenna side optical to electrical (O/E) and electric to optical (E/O) converters were worked by power over fibers. We have successfully confirmed more than 37dB carrier-to-noise ratio (CNR) under the 26dB dynamic range of received signal strength of 6.74GHz, 64QAM (quadrature amplitude modulation), 37.5Mbps radio frequency (RF) signal. This result shows the proposed configuration can perform applicable communication quality.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129657699","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 : 2014-12-22DOI: 10.1109/MWP.2014.6994590
Saba Siadat Mousavi, P. Berini, A. Stohr
A surface plasmon nanoantenna-based photo-detector is proposed and investigated. An array of nanodipoles on an InP substrate is assumed, where the detection region consists of volumes of InGaAs located in the gaps of the nanodipoles. The responsivity of the photodetector is estimated to be ~100 mA/W at its peak value. A trend is observed for the power absorption in the detection region as a function of gap size; an optimum gap size exists that maximizes the product of the gap volume and the electric field enhancement in the gap. The 3 dB electrical bandwidth of the device is calculated assuming conventional and ballistic carrier transit in the detection region, yielding 0.7-4 THz.
{"title":"Surface plasmon nanoantenna-based photodetector with Terahertz electrical bandwidth","authors":"Saba Siadat Mousavi, P. Berini, A. Stohr","doi":"10.1109/MWP.2014.6994590","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994590","url":null,"abstract":"A surface plasmon nanoantenna-based photo-detector is proposed and investigated. An array of nanodipoles on an InP substrate is assumed, where the detection region consists of volumes of InGaAs located in the gaps of the nanodipoles. The responsivity of the photodetector is estimated to be ~100 mA/W at its peak value. A trend is observed for the power absorption in the detection region as a function of gap size; an optimum gap size exists that maximizes the product of the gap volume and the electric field enhancement in the gap. The 3 dB electrical bandwidth of the device is calculated assuming conventional and ballistic carrier transit in the detection region, yielding 0.7-4 THz.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130506481","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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