Pub Date : 2018-10-01DOI: 10.1109/MWP.2018.8552916
R. Bonjour, S. Welschen, J. Johansson, J. Leuthold
We introduce and demonstrate an optical beamformer concept based on a spatial light modulator that enables independent steering and shaping of a large number of beams. In addition, our microwave photonic based system has a relatively small volume and provides additional capabilities when compared to other concepts for next generation high throughput satellites.
{"title":"Steering and Shaping of Multiple Beams with a Spatial Light Modulator based Beamformer","authors":"R. Bonjour, S. Welschen, J. Johansson, J. Leuthold","doi":"10.1109/MWP.2018.8552916","DOIUrl":"https://doi.org/10.1109/MWP.2018.8552916","url":null,"abstract":"We introduce and demonstrate an optical beamformer concept based on a spatial light modulator that enables independent steering and shaping of a large number of beams. In addition, our microwave photonic based system has a relatively small volume and provides additional capabilities when compared to other concepts for next generation high throughput satellites.","PeriodicalId":146799,"journal":{"name":"2018 International Topical Meeting on Microwave Photonics (MWP)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121917819","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 : 2018-10-01DOI: 10.1109/MWP.2018.8552896
A. Beling, J. Morgan, K. Sun, Qianhuan Yu
The talk reviews flip-chip bonded photodiodes, waveguide photodetectors, and integrated photodiode-antenna emitters with bandwidths up to 120 GHz. Recent results from heterogeneous III-V photodiodes on silicon for analog applications will be discussed.
{"title":"High Power Integrated 100 GHz Photodetectors","authors":"A. Beling, J. Morgan, K. Sun, Qianhuan Yu","doi":"10.1109/MWP.2018.8552896","DOIUrl":"https://doi.org/10.1109/MWP.2018.8552896","url":null,"abstract":"The talk reviews flip-chip bonded photodiodes, waveguide photodetectors, and integrated photodiode-antenna emitters with bandwidths up to 120 GHz. Recent results from heterogeneous III-V photodiodes on silicon for analog applications will be discussed.","PeriodicalId":146799,"journal":{"name":"2018 International Topical Meeting on Microwave Photonics (MWP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123925321","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 : 2018-10-01DOI: 10.1109/MWP.2018.8552854
P. Runge, F. Ganzer, T. Beckerwerth, S. Keyvaninia, S. Mutschall, A. Seeger, Martin Schell Fraunhofer
We demonstrate high-speed and high-power evanescently-coupled waveguide modified uni-traveling-carrier photodiode arrays. The arrays are an optically parallel connection of different numbers of photodiodes. A responsivity of 0.46A/W at 1550nm, 3dB-bandwidth of 28GHz and 12dBm RF output power at 40GHz was achieved with such a device. Furthermore, the linearity was measured at different temperatures and frequencies in order to determine the limiting factor of the performance.
{"title":"High-Power Waveguide Integrated Modified Uni-Travelling Carrier Photodiode Arrays","authors":"P. Runge, F. Ganzer, T. Beckerwerth, S. Keyvaninia, S. Mutschall, A. Seeger, Martin Schell Fraunhofer","doi":"10.1109/MWP.2018.8552854","DOIUrl":"https://doi.org/10.1109/MWP.2018.8552854","url":null,"abstract":"We demonstrate high-speed and high-power evanescently-coupled waveguide modified uni-traveling-carrier photodiode arrays. The arrays are an optically parallel connection of different numbers of photodiodes. A responsivity of 0.46A/W at 1550nm, 3dB-bandwidth of 28GHz and 12dBm RF output power at 40GHz was achieved with such a device. Furthermore, the linearity was measured at different temperatures and frequencies in order to determine the limiting factor of the performance.","PeriodicalId":146799,"journal":{"name":"2018 International Topical Meeting on Microwave Photonics (MWP)","volume":"368 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123949263","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 : 2018-10-01DOI: 10.1109/MWP.2018.8552904
U. Habib, M. Steeg, A. Stöhr, N. Gomes
A system for serving a large number of users at millimeter-wave (mmW) frequencies using a single Radio Frequency (RF) chain is presented. A single Remote Antenna Unit (RAU) supported by Radio-over-Fiber transport is used to transmit multiple 60GHz band signals to various users located at different spatial locations using the beamsteering characteristics of a Leaky Wave Antenna (LWA). Error Vector Magnitude analysis has been performed for each user signal up to a maximum of seven users per RF chain with wireless transmission over 2m. A performance comparison for different user-signal frequency spacings has been provided to understand the limitations of the system and results show that the proposed system design with the LWA performs better than systems using waveguide and horn antenna transmitters. A realization to double the number of served users is also presented which shows that up to 10 users can be served using half region of the LWA, with each user transmitting 1Gb/s data rate, delivering an aggregate data rate of 10Gb/s.
{"title":"Radio-over-Fiber-supported Millimeter-wave Multiuser Transmission with Low-Complexity Antenna Units","authors":"U. Habib, M. Steeg, A. Stöhr, N. Gomes","doi":"10.1109/MWP.2018.8552904","DOIUrl":"https://doi.org/10.1109/MWP.2018.8552904","url":null,"abstract":"A system for serving a large number of users at millimeter-wave (mmW) frequencies using a single Radio Frequency (RF) chain is presented. A single Remote Antenna Unit (RAU) supported by Radio-over-Fiber transport is used to transmit multiple 60GHz band signals to various users located at different spatial locations using the beamsteering characteristics of a Leaky Wave Antenna (LWA). Error Vector Magnitude analysis has been performed for each user signal up to a maximum of seven users per RF chain with wireless transmission over 2m. A performance comparison for different user-signal frequency spacings has been provided to understand the limitations of the system and results show that the proposed system design with the LWA performs better than systems using waveguide and horn antenna transmitters. A realization to double the number of served users is also presented which shows that up to 10 users can be served using half region of the LWA, with each user transmitting 1Gb/s data rate, delivering an aggregate data rate of 10Gb/s.","PeriodicalId":146799,"journal":{"name":"2018 International Topical Meeting on Microwave Photonics (MWP)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116603837","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 : 2018-10-01DOI: 10.1109/MWP.2018.8552908
Tongyun Li, H. Shams, C. Renaud, A. Seeds, R. Penty, M. Fice, I. White
This paper demonstrates a novel digital radio over fibre (DRoF) architecture that is able to transport multiple compressed digitised RF services using both optical fibre and wireless millimetre wave (mmW) links. This solution has advantages as a cost effective indoor wireless infrastructure where flexible transmission schemes are required. Experimental results indicate wide RF dynamic range for two LTE services transmitted simultaneously, showing its capability for creating a neutral-host radio access network (RAN) with good spectral efficiency and cost effectiveness.
{"title":"Multi-service Digital Radio over Fibre System with Millimetre Wave Bridging","authors":"Tongyun Li, H. Shams, C. Renaud, A. Seeds, R. Penty, M. Fice, I. White","doi":"10.1109/MWP.2018.8552908","DOIUrl":"https://doi.org/10.1109/MWP.2018.8552908","url":null,"abstract":"This paper demonstrates a novel digital radio over fibre (DRoF) architecture that is able to transport multiple compressed digitised RF services using both optical fibre and wireless millimetre wave (mmW) links. This solution has advantages as a cost effective indoor wireless infrastructure where flexible transmission schemes are required. Experimental results indicate wide RF dynamic range for two LTE services transmitted simultaneously, showing its capability for creating a neutral-host radio access network (RAN) with good spectral efficiency and cost effectiveness.","PeriodicalId":146799,"journal":{"name":"2018 International Topical Meeting on Microwave Photonics (MWP)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126619345","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 : 2018-10-01DOI: 10.1109/MWP.2018.8552882
Xiaojuan Liu, Chaitanya K. Mididoddi, Zhongwei Tan, Guoqing Wang, Liyang Shao, Chao Wang
Most existing microwave photonic transversal filters are implemented in the incoherent regime using multiple optical carrier wavelengths to avoid optical interference. The system therefore becomes complicated and expensive. In this work, we present a novel single-wavelength microwave photonics transversal filter design in the coherent regime using a single multimode fibre. Filter taps are generated from spatial modes excited by multiple narrow optical beams with different incident angles. Therefore, optical interference is eliminated due to space demultiplexing. Time delays between filter taps are obtained due to large modal dispersion and can be simply tuned using spatial slots. In a proof-of-concept experiment, a modal dispersion enabled optical delay line module for a two-tap microwave photonic transversal filter has been demonstrated with avoided optical interference.
{"title":"Tunable Multimode Optical Delay Line for Single-Wavelength Microwave Photonic Transversal Filter","authors":"Xiaojuan Liu, Chaitanya K. Mididoddi, Zhongwei Tan, Guoqing Wang, Liyang Shao, Chao Wang","doi":"10.1109/MWP.2018.8552882","DOIUrl":"https://doi.org/10.1109/MWP.2018.8552882","url":null,"abstract":"Most existing microwave photonic transversal filters are implemented in the incoherent regime using multiple optical carrier wavelengths to avoid optical interference. The system therefore becomes complicated and expensive. In this work, we present a novel single-wavelength microwave photonics transversal filter design in the coherent regime using a single multimode fibre. Filter taps are generated from spatial modes excited by multiple narrow optical beams with different incident angles. Therefore, optical interference is eliminated due to space demultiplexing. Time delays between filter taps are obtained due to large modal dispersion and can be simply tuned using spatial slots. In a proof-of-concept experiment, a modal dispersion enabled optical delay line module for a two-tap microwave photonic transversal filter has been demonstrated with avoided optical interference.","PeriodicalId":146799,"journal":{"name":"2018 International Topical Meeting on Microwave Photonics (MWP)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127506096","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 : 2018-10-01DOI: 10.1109/MWP.2018.8552914
Yang Liu, A. Choudhary, G. Ren, K. Vu, B. Morrison, A. Casas-Bedoya, T. Nguyen, D. Choi, A. Mitchell, S. Madden, D. Marpaung, B. Eggleton
On-chip linear and nonlinear optical effects have shown tremendous potentials for applications in RF photonic signal processing. Combining their complementary optical properties in the same integrated platform is expected to satisfy the future increasing demands of high-performance integrated microwave photonic systems. However, the integration of linear circuits with high-performance optical nonlinearity elements remains challenging. Here, we report the first proof-of-concept demonstration of a microwave photonic notch filter based on the simultaneous integration of active Brillouin circuits and passive ring resonators on the same photonic chip, merging advanced filtering functionality, optimized performance and compactness.
{"title":"Integrating Brillouin processing with functional circuits for enhanced RF photonic processing","authors":"Yang Liu, A. Choudhary, G. Ren, K. Vu, B. Morrison, A. Casas-Bedoya, T. Nguyen, D. Choi, A. Mitchell, S. Madden, D. Marpaung, B. Eggleton","doi":"10.1109/MWP.2018.8552914","DOIUrl":"https://doi.org/10.1109/MWP.2018.8552914","url":null,"abstract":"On-chip linear and nonlinear optical effects have shown tremendous potentials for applications in RF photonic signal processing. Combining their complementary optical properties in the same integrated platform is expected to satisfy the future increasing demands of high-performance integrated microwave photonic systems. However, the integration of linear circuits with high-performance optical nonlinearity elements remains challenging. Here, we report the first proof-of-concept demonstration of a microwave photonic notch filter based on the simultaneous integration of active Brillouin circuits and passive ring resonators on the same photonic chip, merging advanced filtering functionality, optimized performance and compactness.","PeriodicalId":146799,"journal":{"name":"2018 International Topical Meeting on Microwave Photonics (MWP)","volume":"192 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122429971","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 : 2018-10-01DOI: 10.1109/MWP.2018.8552884
B. Hussain, G. Serafino, F. Amato, C. Porzi, A. Bogoni, P. Ghelfi
We present a fast reconfigurable beamforming network with switching time $< 5$ ns, based on photonic integrated circuits. It allows for a complete antenna beam steering, controlling the signal phase over $> 360 ^{circ}$. The proposed beamforming network is tested by transmitting and steering a 2 Gb/s signal, without introducing any signal degradation, demonstrating its suitability to wideband, high bit-rate future 5G communications.
{"title":"Fast Photonics-Assisted Beamforming Network for Wide-Band, High Bit Rate 5G Communications","authors":"B. Hussain, G. Serafino, F. Amato, C. Porzi, A. Bogoni, P. Ghelfi","doi":"10.1109/MWP.2018.8552884","DOIUrl":"https://doi.org/10.1109/MWP.2018.8552884","url":null,"abstract":"We present a fast reconfigurable beamforming network with switching time $< 5$ ns, based on photonic integrated circuits. It allows for a complete antenna beam steering, controlling the signal phase over $> 360 ^{circ}$. The proposed beamforming network is tested by transmitting and steering a 2 Gb/s signal, without introducing any signal degradation, demonstrating its suitability to wideband, high bit-rate future 5G communications.","PeriodicalId":146799,"journal":{"name":"2018 International Topical Meeting on Microwave Photonics (MWP)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122406620","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 : 2018-10-01DOI: 10.1109/MWP.2018.8552849
D. Onori, J. Azaña
A high performance photonics-based RF tunable receiver that exploits a novel digital feed-forward phase noise cancellation technique is proposed and experimentally demonstrated. In the scheme, a signal receiver exploits an optical I/Q architecture fed by two free-running lasers to filter and down-convert to baseband the incoming RF signal. At the same time, a reference receiver acquires the phase-noise of the two free-running lasers by heterodyning them with an optical frequency comb. Then, a digital feed-forward algorithm utilizes the heterodyning signal to extract the differential phase noise between the two free-running lasers so that to cancel the phase noise that the lasers sources introduce to the baseband signal. Moreover, the scheme is effectively divided in a central unit and a remote-antenna module in order to provide improved remoting capability through fiber optic links. An experiment demonstrates low phase noise operation in an RF input range of 0-50 GHz, only limited by the available laboratory equipment. Photonic integration of the scheme will reach high environmental stability and chip-scale footprint, targeting the challenging requirements of next-generation electronic support measures systems.
{"title":"A Microwave Photonic Tunable Receiver with Digital Feed-Forward Phase Noise Cancellation for Electronic Support Measures and Antenna Remoting","authors":"D. Onori, J. Azaña","doi":"10.1109/MWP.2018.8552849","DOIUrl":"https://doi.org/10.1109/MWP.2018.8552849","url":null,"abstract":"A high performance photonics-based RF tunable receiver that exploits a novel digital feed-forward phase noise cancellation technique is proposed and experimentally demonstrated. In the scheme, a signal receiver exploits an optical I/Q architecture fed by two free-running lasers to filter and down-convert to baseband the incoming RF signal. At the same time, a reference receiver acquires the phase-noise of the two free-running lasers by heterodyning them with an optical frequency comb. Then, a digital feed-forward algorithm utilizes the heterodyning signal to extract the differential phase noise between the two free-running lasers so that to cancel the phase noise that the lasers sources introduce to the baseband signal. Moreover, the scheme is effectively divided in a central unit and a remote-antenna module in order to provide improved remoting capability through fiber optic links. An experiment demonstrates low phase noise operation in an RF input range of 0-50 GHz, only limited by the available laboratory equipment. Photonic integration of the scheme will reach high environmental stability and chip-scale footprint, targeting the challenging requirements of next-generation electronic support measures systems.","PeriodicalId":146799,"journal":{"name":"2018 International Topical Meeting on Microwave Photonics (MWP)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134343320","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 : 2018-10-01DOI: 10.1109/MWP.2018.8552905
Kai We, A. Daryoush
Design of broadband optical phase modulators (PM) with improved sensitivity is presented in this paper using lateral coupled micro-strip (CMS) driving electrodes and a photonic crystal (PhC). The 1D PhC structure consists of alternating sub-micometer layers of PMMI and Air materials. This 1D PhC is placed as a superstrate to the optical core and contributes to a slowlightwave structure for a 200fs optical pulse at the center wavelength of 1550 nm. Both optical BPM and FTDT along with HFSS simulation results demonstrate a 3dB bandwidth of 54GHz and about 100% improvement of the figure of merit of $V_{mathbf{pi , }} times L$ of the PM over optical bandwidth 1530 to 1570 nm wavelength.
{"title":"Broadband and Sensitive Lateral Optical Phase Modulators using 1D-PhC for Integrated Si-Photonics","authors":"Kai We, A. Daryoush","doi":"10.1109/MWP.2018.8552905","DOIUrl":"https://doi.org/10.1109/MWP.2018.8552905","url":null,"abstract":"Design of broadband optical phase modulators (PM) with improved sensitivity is presented in this paper using lateral coupled micro-strip (CMS) driving electrodes and a photonic crystal (PhC). The 1D PhC structure consists of alternating sub-micometer layers of PMMI and Air materials. This 1D PhC is placed as a superstrate to the optical core and contributes to a slowlightwave structure for a 200fs optical pulse at the center wavelength of 1550 nm. Both optical BPM and FTDT along with HFSS simulation results demonstrate a 3dB bandwidth of 54GHz and about 100% improvement of the figure of merit of $V_{mathbf{pi , }} times L$ of the PM over optical bandwidth 1530 to 1570 nm wavelength.","PeriodicalId":146799,"journal":{"name":"2018 International Topical Meeting on Microwave Photonics (MWP)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134216330","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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