By using rapid optical frequency sweep technique, we demonstrated ultra-wideband frequency chirp millimeter-wave signal generation whose bandwidth was 6.4 GHz. Ultra fast and precise optical frequency sweep was achieved by using single-sideband modulation, where the theoretical limit of resolution due to the uncertainty between time and frequency was almost obtained, ultra-wideband frequency chirp signals from 9.6 GHz to 16 GHz, which were generated by using a computer controlled arbitrary waveform generator and a wideband frequency multiplier, were fed to an optical single-single sideband modulator consisting of two sub Mach-Zehnder interferometers
{"title":"Ultra-wideband frequency chirp signal generation by using high-speed optical frequency control with optical single-sideband modulation technique","authors":"T. Kawanishi, T. Sakamoto, M. Izutsu","doi":"10.1109/MWP.2006.346554","DOIUrl":"https://doi.org/10.1109/MWP.2006.346554","url":null,"abstract":"By using rapid optical frequency sweep technique, we demonstrated ultra-wideband frequency chirp millimeter-wave signal generation whose bandwidth was 6.4 GHz. Ultra fast and precise optical frequency sweep was achieved by using single-sideband modulation, where the theoretical limit of resolution due to the uncertainty between time and frequency was almost obtained, ultra-wideband frequency chirp signals from 9.6 GHz to 16 GHz, which were generated by using a computer controlled arbitrary waveform generator and a wideband frequency multiplier, were fed to an optical single-single sideband modulator consisting of two sub Mach-Zehnder interferometers","PeriodicalId":305579,"journal":{"name":"2006 International Topical Meeting on Microwave Photonics","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124282872","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}
C. Renaud, M. Pantouvaki, S. Gregoire, I. Lealman, P. Cannard, R. Gwilliam, A. Seeds
We report a monolithic optical frequency comb generator using quaternary/quaternary multiple quantum well InP/InGaAsP material as phase modulator and gain medium in a frequency modulated (FM) laser design. The modulation was generated by quantum confined Stark effect to achieve a comb-line spacing of 24.4 GHz. The laser was fabricated using a single epitaxial growth step and quantum well intermixing to realize low loss phase and modulation sections. The resulting comb generator produces lines with a spacing exactly given by the modulation frequency, differential phase noise between adjacent lines of -82 dBc/Hz at 1 kHz offset and a comb spectrum width of up to 2 THz
{"title":"A Monolithic MQW InP/InGaAsP-Based Comb Generator","authors":"C. Renaud, M. Pantouvaki, S. Gregoire, I. Lealman, P. Cannard, R. Gwilliam, A. Seeds","doi":"10.1109/MWP.2006.346511","DOIUrl":"https://doi.org/10.1109/MWP.2006.346511","url":null,"abstract":"We report a monolithic optical frequency comb generator using quaternary/quaternary multiple quantum well InP/InGaAsP material as phase modulator and gain medium in a frequency modulated (FM) laser design. The modulation was generated by quantum confined Stark effect to achieve a comb-line spacing of 24.4 GHz. The laser was fabricated using a single epitaxial growth step and quantum well intermixing to realize low loss phase and modulation sections. The resulting comb generator produces lines with a spacing exactly given by the modulation frequency, differential phase noise between adjacent lines of -82 dBc/Hz at 1 kHz offset and a comb spectrum width of up to 2 THz","PeriodicalId":305579,"journal":{"name":"2006 International Topical Meeting on Microwave Photonics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129500333","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}
A novel noise reduction scheme called Balanced Modulation and Detection (BMD) is proposed. In this scheme, the modulating RF signal is half-wave rectified in the optical domain, eliminating the DC optical power resulting from pre-biasing of the optical source. A link model employing this scheme has been developed and key parameters describing link performance have been calculated. A comparison with an externally-modulated link called the class-AB (CAB) photonic link is carried out. Improvement in link SNR and dynamic range up to 8.7 dB and 18 dB, respectively, are obtained
提出了一种新的降噪方案——均衡调制与检测(BMD)。在该方案中，调制射频信号在光域中进行半波整流，消除了由于光源的预偏置而产生的直流光功率。采用该方案建立了链路模型，并计算了描述链路性能的关键参数。并与外调制的ab类光子链路进行了比较。链路信噪比和动态范围分别提高到8.7 dB和18 dB
{"title":"Dynamic Range Enhancement in Analog Optical Links with a Balanced Modulation and Detection Scheme","authors":"D. Marpaung, C. Roeloffzen, W. van Etten","doi":"10.1109/MWP.2006.346551","DOIUrl":"https://doi.org/10.1109/MWP.2006.346551","url":null,"abstract":"A novel noise reduction scheme called Balanced Modulation and Detection (BMD) is proposed. In this scheme, the modulating RF signal is half-wave rectified in the optical domain, eliminating the DC optical power resulting from pre-biasing of the optical source. A link model employing this scheme has been developed and key parameters describing link performance have been calculated. A comparison with an externally-modulated link called the class-AB (CAB) photonic link is carried out. Improvement in link SNR and dynamic range up to 8.7 dB and 18 dB, respectively, are obtained","PeriodicalId":305579,"journal":{"name":"2006 International Topical Meeting on Microwave Photonics","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131983692","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}
L. Zhuang, C. Roeloffzen, R. Heideman, A. Borreman, A. Meijerink, W. van Etten
Optical ring resonators (ORRs) can be used as continuously tunable delay elements in a beam forming network for a phased-array antenna system. The bandwidth of such delay elements can be enhanced by cascading multiple ORRs. When delays and splitting/combining circuitry are integrated in one optical circuit, an optical beam forming network (OBFN) is obtained. In this paper, the principles of optical beam forming using ORRs are explained and demonstrated, by presenting measurements on a 1times4 OBFN chip, realized in LPCVD waveguide technology. To our knowledge, this is the first single-chip demonstration of continuous optical beam forming
{"title":"Single-chip optical beam forming network in LPCVD waveguide technology based on optical ring resonators","authors":"L. Zhuang, C. Roeloffzen, R. Heideman, A. Borreman, A. Meijerink, W. van Etten","doi":"10.1109/MWP.2006.346543","DOIUrl":"https://doi.org/10.1109/MWP.2006.346543","url":null,"abstract":"Optical ring resonators (ORRs) can be used as continuously tunable delay elements in a beam forming network for a phased-array antenna system. The bandwidth of such delay elements can be enhanced by cascading multiple ORRs. When delays and splitting/combining circuitry are integrated in one optical circuit, an optical beam forming network (OBFN) is obtained. In this paper, the principles of optical beam forming using ORRs are explained and demonstrated, by presenting measurements on a 1times4 OBFN chip, realized in LPCVD waveguide technology. To our knowledge, this is the first single-chip demonstration of continuous optical beam forming","PeriodicalId":305579,"journal":{"name":"2006 International Topical Meeting on Microwave Photonics","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125055951","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}
A. Nkansah, Anjali Das, Nathan J. Gomes, P. Shen, David Wake
A cost-effective VCSEL-based star/tree radio over fiber architecture for indoor millimeter-wave systems is presented. The indoor pico-cells can be located many km from a Central Office, with the longer distance distribution performed using single-mode fiber and the in-building distribution using multimode fiber. The feasibility of the system is verified through experimental results demonstrating emulated signal transmission (QPSK, 16-QAM, 64-QAM at 6MSps) over the required single-mode and multimode fiber components with good EVM performance
{"title":"VCSEL-based Single-mode and Multimode Fiber Star/Tree Distribution Network for Millimeter-wave Wireless Systems","authors":"A. Nkansah, Anjali Das, Nathan J. Gomes, P. Shen, David Wake","doi":"10.1109/MWP.2006.346504","DOIUrl":"https://doi.org/10.1109/MWP.2006.346504","url":null,"abstract":"A cost-effective VCSEL-based star/tree radio over fiber architecture for indoor millimeter-wave systems is presented. The indoor pico-cells can be located many km from a Central Office, with the longer distance distribution performed using single-mode fiber and the in-building distribution using multimode fiber. The feasibility of the system is verified through experimental results demonstrating emulated signal transmission (QPSK, 16-QAM, 64-QAM at 6MSps) over the required single-mode and multimode fiber components with good EVM performance","PeriodicalId":305579,"journal":{"name":"2006 International Topical Meeting on Microwave Photonics","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116648739","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}
A novel scheme for the generation of a dispersion tolerant DSB-SC optical signal for remote generation of microwave signals is presented. Using the cross-phase modulation effect of a SOA inside a fiber loop upconversion of signals up to 15 GHz was achieved
{"title":"Optical Generation of Microwave Signals based on XPM of SOAs in a Fiber Loop","authors":"I. G. Insua, C. Schaeffer","doi":"10.1109/MWP.2006.346572","DOIUrl":"https://doi.org/10.1109/MWP.2006.346572","url":null,"abstract":"A novel scheme for the generation of a dispersion tolerant DSB-SC optical signal for remote generation of microwave signals is presented. Using the cross-phase modulation effect of a SOA inside a fiber loop upconversion of signals up to 15 GHz was achieved","PeriodicalId":305579,"journal":{"name":"2006 International Topical Meeting on Microwave Photonics","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122611196","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}
Simulation results based on an UltraWideBand (UWB) system employing a gain-switched laser are presented. 156 Mb/s data stream modulates the position of short electrical pulses, which are then used to gain-switch the laser. The output optical pulses are then transmitted over fiber to a Remote Antenna Unit (RAU), where the signal is detected and undergoes spectral shaping (according to UWB requirements). The resulting Pulse Position Modulated (PPM) electrical impulses are then converted to an amplitude-modulated signal and down-converted. Bit Error Rate measurements are carried out on a back-to-back system and a transmission link (over different lengths of fiber)
{"title":"UWB system based on Gain-Switched Laser","authors":"A. Kaszubowska-Anandarajah, L. Barry","doi":"10.1109/MWP.2006.346502","DOIUrl":"https://doi.org/10.1109/MWP.2006.346502","url":null,"abstract":"Simulation results based on an UltraWideBand (UWB) system employing a gain-switched laser are presented. 156 Mb/s data stream modulates the position of short electrical pulses, which are then used to gain-switch the laser. The output optical pulses are then transmitted over fiber to a Remote Antenna Unit (RAU), where the signal is detected and undergoes spectral shaping (according to UWB requirements). The resulting Pulse Position Modulated (PPM) electrical impulses are then converted to an amplitude-modulated signal and down-converted. Bit Error Rate measurements are carried out on a back-to-back system and a transmission link (over different lengths of fiber)","PeriodicalId":305579,"journal":{"name":"2006 International Topical Meeting on Microwave Photonics","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128102689","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}
T. Sono, Y. Takahashi, T. Nakasyotani, H. Toda, T. Kuri, K. Kitayama
We demonstrate for the first time the full-duplex transmission of 25-GHz spacing dense wavelength-division multiplexing (DWDM) millimeter-wave-band radio-on-fiber (RoF) system using a supercontinuum (SC) light source and optical frequency interleaving technique. In the proposed scheme, filtering response of the arrayed waveguide gratings for demultiplexer and multiplexer is used for suppression of undesired optical sidebands. All the 25-GHz spacing SC modes are used for downlink transmission with photonic up-conversion. The uplink RoF signals are generated with photonic down-conversion from the reused downlink signals. The up- and downlinks 60-GHz-band 156-Mbps RoF signals were simultaneously transmitted over 25-km standard single-mode fibers with error-free and 0.5 dB power penalties
{"title":"Full-Duplex 25-GHz Spacing DWDM MM-Wave-Band Radio-on-Fiber System Using a Supercontinuum Light Source and Arrayed-Waveguide-Grating Filters","authors":"T. Sono, Y. Takahashi, T. Nakasyotani, H. Toda, T. Kuri, K. Kitayama","doi":"10.1109/MWP.2006.346523","DOIUrl":"https://doi.org/10.1109/MWP.2006.346523","url":null,"abstract":"We demonstrate for the first time the full-duplex transmission of 25-GHz spacing dense wavelength-division multiplexing (DWDM) millimeter-wave-band radio-on-fiber (RoF) system using a supercontinuum (SC) light source and optical frequency interleaving technique. In the proposed scheme, filtering response of the arrayed waveguide gratings for demultiplexer and multiplexer is used for suppression of undesired optical sidebands. All the 25-GHz spacing SC modes are used for downlink transmission with photonic up-conversion. The uplink RoF signals are generated with photonic down-conversion from the reused downlink signals. The up- and downlinks 60-GHz-band 156-Mbps RoF signals were simultaneously transmitted over 25-km standard single-mode fibers with error-free and 0.5 dB power penalties","PeriodicalId":305579,"journal":{"name":"2006 International Topical Meeting on Microwave Photonics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123229369","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}
R. Czarny, M. Alouini, X. Marcadet, S. Bansropun, J. Doualan, R. Moncorgé, J. Lampin, M. Krakowski, D. Dolfi
We demonstrate a high-spectral-purity continuous-wave terahertz source, using a diode pumped Yb3+:CaF2 dual frequency laser. THz radiation is generated by photomixing the two frequencies in a low-temperature grown In0.23Ga0.77As photoconductor, doped with Be, and loading a spiral antenna. The frequency difference between the two optical modes is tuneable by step from d.c. to 2 THz. A maximum laser power of 215 mW CW has been obtained with a beatnote-linewidth narrower than 30 kHz. Measurements show a tuneable THz emission with a maximum output power in the order of few tens nW
{"title":"Continuous wave THz generation based on a dual-frequency laser and a LTG - InGaAs photomixer","authors":"R. Czarny, M. Alouini, X. Marcadet, S. Bansropun, J. Doualan, R. Moncorgé, J. Lampin, M. Krakowski, D. Dolfi","doi":"10.1109/MWP.2006.346534","DOIUrl":"https://doi.org/10.1109/MWP.2006.346534","url":null,"abstract":"We demonstrate a high-spectral-purity continuous-wave terahertz source, using a diode pumped Yb3+:CaF2 dual frequency laser. THz radiation is generated by photomixing the two frequencies in a low-temperature grown In0.23Ga0.77As photoconductor, doped with Be, and loading a spiral antenna. The frequency difference between the two optical modes is tuneable by step from d.c. to 2 THz. A maximum laser power of 215 mW CW has been obtained with a beatnote-linewidth narrower than 30 kHz. Measurements show a tuneable THz emission with a maximum output power in the order of few tens nW","PeriodicalId":305579,"journal":{"name":"2006 International Topical Meeting on Microwave Photonics","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126001918","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}
An all-optical microwave bandpass filter employing air-core photonic bandgap fiber (PBGF) based loop mirror is proposed and experimentally demonstrated. A segment of 20 m air-core PBGF is used in the experiment. The frequency response with negative coefficient is realized and can be tuned by changing the incident optical wavelength because of the wavelength-dependent high-birefringence of PBGF. When the input wavelength varies from 1566 nm to 1584 nm, the differential group delay (DGD) of PBGF changes from 30ps to 110 ps, therefore, the free-spectral range (FSR) of the proposed filter changes correspondingly from 33 GHz to 9.6 GHz
{"title":"Microwave Bandpass Filter Based on Air-Core Photonic Bandgap Fiber Loop Mirror","authors":"Xianbin Yu, Xiaoping Zheng, Hanyi Zhang","doi":"10.1109/MWP.2006.346552","DOIUrl":"https://doi.org/10.1109/MWP.2006.346552","url":null,"abstract":"An all-optical microwave bandpass filter employing air-core photonic bandgap fiber (PBGF) based loop mirror is proposed and experimentally demonstrated. A segment of 20 m air-core PBGF is used in the experiment. The frequency response with negative coefficient is realized and can be tuned by changing the incident optical wavelength because of the wavelength-dependent high-birefringence of PBGF. When the input wavelength varies from 1566 nm to 1584 nm, the differential group delay (DGD) of PBGF changes from 30ps to 110 ps, therefore, the free-spectral range (FSR) of the proposed filter changes correspondingly from 33 GHz to 9.6 GHz","PeriodicalId":305579,"journal":{"name":"2006 International Topical Meeting on Microwave Photonics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122007067","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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