Pub Date : 2014-12-22DOI: 10.1109/MWP.2014.6994477
P. Dat, A. Kanno, T. Kawanishi
We propose a high-speed uplink burst-mode LTE-A signal transmission on a converged millimeter-wave and radio-over-fiber system. By using a newly developed burst-mode optical amplifier, we successfully transmit an uplink 5-carrier component LTE-A signal over a converged 5-m 92.5-GHz wireless link and 20-km radio-over-fiber system.
{"title":"Uplink burst LTE-A signal transmission on a converged millimeter-wave and RoF system","authors":"P. Dat, A. Kanno, T. Kawanishi","doi":"10.1109/MWP.2014.6994477","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994477","url":null,"abstract":"We propose a high-speed uplink burst-mode LTE-A signal transmission on a converged millimeter-wave and radio-over-fiber system. By using a newly developed burst-mode optical amplifier, we successfully transmit an uplink 5-carrier component LTE-A signal over a converged 5-m 92.5-GHz wireless link and 20-km radio-over-fiber system.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"38 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":"123497015","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.2014.6994480
S. Babiel, R. Chuenchom, A. Stohr, J. Mitchell, Y. Leiba
A new coherent optical heterodyne radio-over-fiber (CRoF) scheme is proposed for seamless integration of next generation millimeter-wave wireless systems into a (ultra-dense) next generation passive optical network (NG-PON2). For seamless integration with the (ultra-dense) WDM infrastructure of high-capacity and longer-reach NG-PON2 networks, we propose novel radio access units (RAU) using coherent optical heterodyne detection for the generation of the millimeter-wave radio signals. The proposed CRoF concept supports the provision of multiple services over a single optical distribution network including next generation optical and wireless access services and high-capacity fixed wireless links for mobile backhaul. A proof-of-concept experiment is demonstrated in the context of backhauling. An E-band RAU utilizing CRoF is used for converting 2.5 Gb/s optical baseband data after 20 km fiber transmission to a 76 GHz wireless signal. After subsequent wireless transmission over 40 m (limited by the lab environment), the wireless E-band signal is directly reconverted to 2.5 Gb/s baseband data using a low-cost 76 GHz wireless receiver with RF envelope detection. The receiver's sensitivity is only -47 dBm for a bit error rate (BER) of 2.10-3. Within international regulations, the transmit RF power can be further increased by about 68 dB, i.e. wireless distances way beyond 2 km can be expected even in the case of rain.
{"title":"Coherent radio-over-fiber (CRoF) approach for heterogeneous wireless-optical networks","authors":"S. Babiel, R. Chuenchom, A. Stohr, J. Mitchell, Y. Leiba","doi":"10.1109/MWP.2014.6994480","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994480","url":null,"abstract":"A new coherent optical heterodyne radio-over-fiber (CRoF) scheme is proposed for seamless integration of next generation millimeter-wave wireless systems into a (ultra-dense) next generation passive optical network (NG-PON2). For seamless integration with the (ultra-dense) WDM infrastructure of high-capacity and longer-reach NG-PON2 networks, we propose novel radio access units (RAU) using coherent optical heterodyne detection for the generation of the millimeter-wave radio signals. The proposed CRoF concept supports the provision of multiple services over a single optical distribution network including next generation optical and wireless access services and high-capacity fixed wireless links for mobile backhaul. A proof-of-concept experiment is demonstrated in the context of backhauling. An E-band RAU utilizing CRoF is used for converting 2.5 Gb/s optical baseband data after 20 km fiber transmission to a 76 GHz wireless signal. After subsequent wireless transmission over 40 m (limited by the lab environment), the wireless E-band signal is directly reconverted to 2.5 Gb/s baseband data using a low-cost 76 GHz wireless receiver with RF envelope detection. The receiver's sensitivity is only -47 dBm for a bit error rate (BER) of 2.10-3. Within international regulations, the transmit RF power can be further increased by about 68 dB, i.e. wireless distances way beyond 2 km can be expected even in the case of rain.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"83 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":"116683860","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.2014.6994567
Chao Wang, N. Gomes
A novel approach to sensing broadband radio frequency (RF) spectrum beyond the Nyquist limit based on photonic temporal channelization and compressive sensing is proposed. A spectrally-sparse RF signal with unknown frequencies is modulated onto a highly chirped optical pulse. An optical channelizer slices the modulated pulse spectrum, which is equivalent to temporally sampling the RF waveform thanks to the dispersion-induced wavelength-to-time mapping. This serial-to-parallel conversion avoids the use of a high-speed detector and digitizer. Furthermore, compressive sensing with optical random demodulation is achieved using a spatial light modulator, enabling the system to capture the wideband multi-tone RF signal with a sampling rate far lower than the Nyquist rate. It is demonstrated that the temporal channelization system with a channel spacing of 20 GHz achieves RF spectrum sensing with a high resolution of 196 MHz. With an equivalent sampling rate of only 25 GHz, a 50-GHz broadband two-tone RF signal can be captured and reconstructed by the system thanks to compressive sensing with a compression ratio of 4.
{"title":"Photonics-enabled sub-Nyquist radio frequency sensing based on temporal channelization and compressive sensing","authors":"Chao Wang, N. Gomes","doi":"10.1109/MWP.2014.6994567","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994567","url":null,"abstract":"A novel approach to sensing broadband radio frequency (RF) spectrum beyond the Nyquist limit based on photonic temporal channelization and compressive sensing is proposed. A spectrally-sparse RF signal with unknown frequencies is modulated onto a highly chirped optical pulse. An optical channelizer slices the modulated pulse spectrum, which is equivalent to temporally sampling the RF waveform thanks to the dispersion-induced wavelength-to-time mapping. This serial-to-parallel conversion avoids the use of a high-speed detector and digitizer. Furthermore, compressive sensing with optical random demodulation is achieved using a spatial light modulator, enabling the system to capture the wideband multi-tone RF signal with a sampling rate far lower than the Nyquist rate. It is demonstrated that the temporal channelization system with a channel spacing of 20 GHz achieves RF spectrum sensing with a high resolution of 196 MHz. With an equivalent sampling rate of only 25 GHz, a 50-GHz broadband two-tone RF signal can be captured and reconstructed by the system thanks to compressive sensing with a compression ratio of 4.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"76 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":"126306191","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: 10.1587/TRANSELE.E98.C.764
A. Beling, J. Campbell, Kejia Li, Qinglong Li, Ye Wang, M. Woodson, Xiaojun Xie, Zhanyu Yang
This talk reviews modified uni-traveling carrier (MUTC) photodiodes that have achieved high RF output power levels of up to 1.8 Watt. Discrete wideband photodiodes, narrowband photodiodes, and photodiode arrays and their applications in analog links and photonic microwave generation are discussed.
{"title":"High-power photodiodes for analog applications","authors":"A. Beling, J. Campbell, Kejia Li, Qinglong Li, Ye Wang, M. Woodson, Xiaojun Xie, Zhanyu Yang","doi":"10.1587/TRANSELE.E98.C.764","DOIUrl":"https://doi.org/10.1587/TRANSELE.E98.C.764","url":null,"abstract":"This talk reviews modified uni-traveling carrier (MUTC) photodiodes that have achieved high RF output power levels of up to 1.8 Watt. Discrete wideband photodiodes, narrowband photodiodes, and photodiode arrays and their applications in analog links and photonic microwave generation are discussed.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"110 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":"124088679","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.2014.6994574
H. Shams, M. Fice, K. Balakier, C. Renaud, A. Seeds, F. van Dijk
We experimentally demonstrate photonic generation of a multichannel THz wireless signal at 200 GHz, with data rate up to 40 Gb/s QPSK modulation format using an optical heterodyne technique and digital coherent detection. The BER measurements were carried out for three subcarriers each modulated with 5 Gbaud QPSK or for two subcarriers modulated with 10 Gbaud QPSK, giving a total speed of 30 Gb/s or 40 Gb/s, respectively. The proposed system can provide a high-speed wireless transmission capability by using spectrally efficient subcarrier channels that increase the overall speed and reduce the requirement for electronic bandwidth.
{"title":"Multichannel 200GHz 40Gb/s wireless communication system using photonic signal generation","authors":"H. Shams, M. Fice, K. Balakier, C. Renaud, A. Seeds, F. van Dijk","doi":"10.1109/MWP.2014.6994574","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994574","url":null,"abstract":"We experimentally demonstrate photonic generation of a multichannel THz wireless signal at 200 GHz, with data rate up to 40 Gb/s QPSK modulation format using an optical heterodyne technique and digital coherent detection. The BER measurements were carried out for three subcarriers each modulated with 5 Gbaud QPSK or for two subcarriers modulated with 10 Gbaud QPSK, giving a total speed of 30 Gb/s or 40 Gb/s, respectively. The proposed system can provide a high-speed wireless transmission capability by using spectrally efficient subcarrier channels that increase the overall speed and reduce the requirement for electronic bandwidth.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"5 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":"131071583","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.2014.6994523
M. Ameya, S. Kurokawa
In this paper, we propose a new method for electromagnetic interference (EMI) noise analysis using an analog radio-over-fiber (RoF) link, cross domain analyzer, and mobile robot. With this new method, both the phase distribution and amplitude distribution of an electric field radiated by an EMI noise source can be measured. From the measured and simulated results obtained using the method of moments technique, we show that we can differentiate between noise sources in different positions using the phase distribution measured on a measurement circle.
{"title":"EMI noise source discrimination using cross domain analyzer and analog RoF link with mobile robot","authors":"M. Ameya, S. Kurokawa","doi":"10.1109/MWP.2014.6994523","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994523","url":null,"abstract":"In this paper, we propose a new method for electromagnetic interference (EMI) noise analysis using an analog radio-over-fiber (RoF) link, cross domain analyzer, and mobile robot. With this new method, both the phase distribution and amplitude distribution of an electric field radiated by an EMI noise source can be measured. From the measured and simulated results obtained using the method of moments technique, we show that we can differentiate between noise sources in different positions using the phase distribution measured on a measurement circle.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"113 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":"133435603","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.2014.6994528
Y. N. Wijayanto, A. Kanno, T. Kawanishi, H. Murata, Y. Okamura
We propose z-cut LiNbO3 optical modulators using patch-antennas with orthogonal-gaps for millimeter-wave radar applications. They are fabricated on thin LiNbO3 crystals bonded with low-k dielectric materials. Large modulation efficiency and low noise response are obtainable.
{"title":"Z-cut LiNbO3 optical modulator using patch-antenna with orthogonal-gaps for millimeter-wave radar applications","authors":"Y. N. Wijayanto, A. Kanno, T. Kawanishi, H. Murata, Y. Okamura","doi":"10.1109/MWP.2014.6994528","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994528","url":null,"abstract":"We propose z-cut LiNbO3 optical modulators using patch-antennas with orthogonal-gaps for millimeter-wave radar applications. They are fabricated on thin LiNbO3 crystals bonded with low-k dielectric materials. Large modulation efficiency and low noise response are obtainable.","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":"123822554","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.2014.6994478
Yuting Fan, Anthony E. Aighobahi, N. Gomes, Kun Xu
In this paper, we experimentally investigate the throughput of IEEE 802.11n 2×2 multiple-input-multiple-output (MIMO) signals in a radio-over-fiber-based distributed antenna system (DAS) with different fiber links. Both a MIMO-supported access point (AP) and a spatial-diversity-supported AP were separately employed in the experiments. Throughput measurements were carried out with wireless users at different locations in a typical office environment. The results indicate that MIMO signals can maintain high throughput when the fiber length difference between the two remote antenna units (RAUs) is under 100 m and falls quickly when the length difference is greater. For the spatial diversity signals, high throughput can be maintained even when the difference is 150m.
{"title":"Performance of commercial MIMO access point in distributed antenna system with different fiber lengths","authors":"Yuting Fan, Anthony E. Aighobahi, N. Gomes, Kun Xu","doi":"10.1109/MWP.2014.6994478","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994478","url":null,"abstract":"In this paper, we experimentally investigate the throughput of IEEE 802.11n 2×2 multiple-input-multiple-output (MIMO) signals in a radio-over-fiber-based distributed antenna system (DAS) with different fiber links. Both a MIMO-supported access point (AP) and a spatial-diversity-supported AP were separately employed in the experiments. Throughput measurements were carried out with wireless users at different locations in a typical office environment. The results indicate that MIMO signals can maintain high throughput when the fiber length difference between the two remote antenna units (RAUs) is under 100 m and falls quickly when the length difference is greater. For the spatial diversity signals, high throughput can be maintained even when the difference is 150m.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"5 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":"132954331","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.2014.6994501
Y. Fukuchi, Taku Sekine, Kazuhiro Ohnaka
We propose a bismuth-based actively and harmonically mode-locked short-cavity fiber laser. A 1.5-m-long bismuth-oxide-based nonlinear erbium-doped fiber is used as both a gain medium and a noise suppressor, and ultra-stable 10GHz short pulses are generated.
{"title":"Ultra-stable short pulse generation from an actively and harmonically mode-locked fiber laser employing a bismuth-oxide-based nonlinear erbium-doped fiber","authors":"Y. Fukuchi, Taku Sekine, Kazuhiro Ohnaka","doi":"10.1109/MWP.2014.6994501","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994501","url":null,"abstract":"We propose a bismuth-based actively and harmonically mode-locked short-cavity fiber laser. A 1.5-m-long bismuth-oxide-based nonlinear erbium-doped fiber is used as both a gain medium and a noise suppressor, and ultra-stable 10GHz short pulses are generated.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"19 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":"128884121","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.2014.6994507
S. Mieda, S. Shiratori, N. Yokota, H. Yasaka, W. Kobayashi
An optically controlled semiconductor laser with broad 3-dB bandwidth is achieved by introducing a phase- and intensity-controllable external cavity into a DFB laser. The external cavity functions as a passive-feedback section for the semiconductor laser. The optimum structure of an optically controlled passive-feedback laser (OC-PFL) for widening the 3-dB bandwidth of the laser is numerically analyzed. A broad 3-dB bandwidth of up to 40 GHz is experimentally confirmed by using a fabricated OC-PFL with a structure designed on the basis of the analysis results. It is also experimentally confirmed that it is possible to achieve 3-dB bandwidth of more than 50 GHz.
{"title":"High-speed optically controlled semiconductor light source with an external cavity","authors":"S. Mieda, S. Shiratori, N. Yokota, H. Yasaka, W. Kobayashi","doi":"10.1109/MWP.2014.6994507","DOIUrl":"https://doi.org/10.1109/MWP.2014.6994507","url":null,"abstract":"An optically controlled semiconductor laser with broad 3-dB bandwidth is achieved by introducing a phase- and intensity-controllable external cavity into a DFB laser. The external cavity functions as a passive-feedback section for the semiconductor laser. The optimum structure of an optically controlled passive-feedback laser (OC-PFL) for widening the 3-dB bandwidth of the laser is numerically analyzed. A broad 3-dB bandwidth of up to 40 GHz is experimentally confirmed by using a fabricated OC-PFL with a structure designed on the basis of the analysis results. It is also experimentally confirmed that it is possible to achieve 3-dB bandwidth of more than 50 GHz.","PeriodicalId":220534,"journal":{"name":"Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on","volume":"8 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":"129158629","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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