Pub Date : 2003-09-10DOI: 10.1109/MWP.2003.1422861
M. Brunel, F. Bretebaker, N. D. Lai, M. Alouini, M. Vallet, O. Emile, A. Le Floch
Two-frequency solid-state lasers are shown to provide beat notes at microwave frequencies with continuous tunability, high spectral purity and 100% modulation depth. Owing to an intra-cavity birefringent crystal providing both electro- and thermo-optic properties, the laser delivers a beat frequency that is both voltage- and temperature-controlled. First, a dual phase-locked loop is experimentally demonstrated to stabilize a two-frequency solid-state laser against a RF synthesizer, resulting in a linewidth of 25 mHz. Second, we show that pump-power modulation can lead to a new two-frequency pulsed operation with pulse-to-pulse RF coherence. Third, a specially designed two-frequency composite Er-Yb:glass-LiTaO/sub 3/ microchip laser is shown to provide a beat note up to 100 GHz with continuous tunability. Applications of these lasers to local oscillators in microwave-photonic systems and to lidar-radars are discussed.
{"title":"Microwave signal generation with high spectral purity using two-frequency solid-state lasers","authors":"M. Brunel, F. Bretebaker, N. D. Lai, M. Alouini, M. Vallet, O. Emile, A. Le Floch","doi":"10.1109/MWP.2003.1422861","DOIUrl":"https://doi.org/10.1109/MWP.2003.1422861","url":null,"abstract":"Two-frequency solid-state lasers are shown to provide beat notes at microwave frequencies with continuous tunability, high spectral purity and 100% modulation depth. Owing to an intra-cavity birefringent crystal providing both electro- and thermo-optic properties, the laser delivers a beat frequency that is both voltage- and temperature-controlled. First, a dual phase-locked loop is experimentally demonstrated to stabilize a two-frequency solid-state laser against a RF synthesizer, resulting in a linewidth of 25 mHz. Second, we show that pump-power modulation can lead to a new two-frequency pulsed operation with pulse-to-pulse RF coherence. Third, a specially designed two-frequency composite Er-Yb:glass-LiTaO/sub 3/ microchip laser is shown to provide a beat note up to 100 GHz with continuous tunability. Applications of these lasers to local oscillators in microwave-photonic systems and to lidar-radars are discussed.","PeriodicalId":432014,"journal":{"name":"MWP 2003 Proceedings. International Topical Meeting on Microwave Photonics, 2003.","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115562916","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 : 2003-09-10DOI: 10.1109/MWP.2003.1422814
A. Tredicucci, R. Kohler, F. Beltram, H. Beere, E. H. Linfield, A. Giles Davies, D. A. Ritchie
Unipolar semiconductor injection lasers emitting at THz frequencies have been demonstrated. The devices, based on the quantum-cascade scheme in GaAs/AlGaAs superlattices, operate in continuous-wave up to 50 K (70 K pulsed) with output powers of several mW.
在太赫兹频率发射的单极半导体注入激光器已经被证明。该器件基于GaAs/AlGaAs超晶格中的量子级联方案，在高达50 K (70 K脉冲)的连续波中工作，输出功率为几mW。
{"title":"Terahertz heterostructure lasers","authors":"A. Tredicucci, R. Kohler, F. Beltram, H. Beere, E. H. Linfield, A. Giles Davies, D. A. Ritchie","doi":"10.1109/MWP.2003.1422814","DOIUrl":"https://doi.org/10.1109/MWP.2003.1422814","url":null,"abstract":"Unipolar semiconductor injection lasers emitting at THz frequencies have been demonstrated. The devices, based on the quantum-cascade scheme in GaAs/AlGaAs superlattices, operate in continuous-wave up to 50 K (70 K pulsed) with output powers of several mW.","PeriodicalId":432014,"journal":{"name":"MWP 2003 Proceedings. International Topical Meeting on Microwave Photonics, 2003.","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121087441","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 : 2003-09-10DOI: 10.1109/MWP.2003.1422871
I. Oh
The Stokes waves in DSF pumped by an AMLL reveal coherence with each other, resulting in the dual Stokes mode. Utilizing the behavior a novel method to recover the optical clock was proposed and demonstrated.
{"title":"Dual Stokes wave generated by an actively mode-locked laser via the coherent stimulated Brillouin scattering in dispersion-shifted fiber","authors":"I. Oh","doi":"10.1109/MWP.2003.1422871","DOIUrl":"https://doi.org/10.1109/MWP.2003.1422871","url":null,"abstract":"The Stokes waves in DSF pumped by an AMLL reveal coherence with each other, resulting in the dual Stokes mode. Utilizing the behavior a novel method to recover the optical clock was proposed and demonstrated.","PeriodicalId":432014,"journal":{"name":"MWP 2003 Proceedings. International Topical Meeting on Microwave Photonics, 2003.","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130351234","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 : 2003-09-10DOI: 10.1109/MWP.2003.1422914
T. Sato, M. Iwanami, S. Hoshino, M. Kishi, M. Tsuchiya
Inversion method of Biot-Savart's law has been successfully applied to one-dimensional current profiling for /spl mu/m-class planar circuits. Indispensable is to use a fiber-edge magneto-optic probe of high spatial resolution and high DUT-accessibility.
{"title":"Current profiling for /spl mu/m-class planar circuit patterns by fiber-edge magneto-optic probe","authors":"T. Sato, M. Iwanami, S. Hoshino, M. Kishi, M. Tsuchiya","doi":"10.1109/MWP.2003.1422914","DOIUrl":"https://doi.org/10.1109/MWP.2003.1422914","url":null,"abstract":"Inversion method of Biot-Savart's law has been successfully applied to one-dimensional current profiling for /spl mu/m-class planar circuits. Indispensable is to use a fiber-edge magneto-optic probe of high spatial resolution and high DUT-accessibility.","PeriodicalId":432014,"journal":{"name":"MWP 2003 Proceedings. International Topical Meeting on Microwave Photonics, 2003.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130992129","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 : 2003-09-10DOI: 10.1109/MWP.2003.1422908
J. Capmany, D. Pastor, A. Martínez, S. Sales, B. Ortega
We propose and experimentally demonstrate a novel technical approach for the implementation of photonic RF filters that is based on the p phase inversion that a RF modulating signal suffers in a EOM Mach-Zehnder modulator depending on whether the positive or the negative linear slope of its modulation transfer function is employed.
{"title":"Using phase inversion in an electro-optic modulator to implement RF incoherent photonic filters with negative coefficients","authors":"J. Capmany, D. Pastor, A. Martínez, S. Sales, B. Ortega","doi":"10.1109/MWP.2003.1422908","DOIUrl":"https://doi.org/10.1109/MWP.2003.1422908","url":null,"abstract":"We propose and experimentally demonstrate a novel technical approach for the implementation of photonic RF filters that is based on the p phase inversion that a RF modulating signal suffers in a EOM Mach-Zehnder modulator depending on whether the positive or the negative linear slope of its modulation transfer function is employed.","PeriodicalId":432014,"journal":{"name":"MWP 2003 Proceedings. International Topical Meeting on Microwave Photonics, 2003.","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131708813","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 : 2003-09-10DOI: 10.1109/MWP.2003.1422848
T. Kuri, K. Kitayama
Channel selection for DWDM/SCM 60-GHz-band radio-on-fiber (ROF) signals by optical heterodyne detection with a dual-mode local light is investigated. Error-free detection of the DWDM/SCM ROF signals after 25-km-long SMF transmission and channel selection is demonstrated.
{"title":"A channel selection scheme with optical heterodyne detection for DWDM/SCM millimeter-wave-band radio-on-fiber signal","authors":"T. Kuri, K. Kitayama","doi":"10.1109/MWP.2003.1422848","DOIUrl":"https://doi.org/10.1109/MWP.2003.1422848","url":null,"abstract":"Channel selection for DWDM/SCM 60-GHz-band radio-on-fiber (ROF) signals by optical heterodyne detection with a dual-mode local light is investigated. Error-free detection of the DWDM/SCM ROF signals after 25-km-long SMF transmission and channel selection is demonstrated.","PeriodicalId":432014,"journal":{"name":"MWP 2003 Proceedings. International Topical Meeting on Microwave Photonics, 2003.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130556089","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 : 2003-09-10DOI: 10.1109/MWP.2003.1422899
H. Ohtsuki, K. Tsukamoto, S. Komaki
This paper proposes the application of optical delay insertion to radio-on-fiber ubiquitous antenna for road-to-vehicle wireless CDM system. As a result, the BER performance is improved by setting up delay time difference between each optical link appropriately.
{"title":"BER improvement effect of optical delay insertion in ROF ubiquitous antenna for road-to-vehicle wireless CDM system","authors":"H. Ohtsuki, K. Tsukamoto, S. Komaki","doi":"10.1109/MWP.2003.1422899","DOIUrl":"https://doi.org/10.1109/MWP.2003.1422899","url":null,"abstract":"This paper proposes the application of optical delay insertion to radio-on-fiber ubiquitous antenna for road-to-vehicle wireless CDM system. As a result, the BER performance is improved by setting up delay time difference between each optical link appropriately.","PeriodicalId":432014,"journal":{"name":"MWP 2003 Proceedings. International Topical Meeting on Microwave Photonics, 2003.","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132195947","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 : 2003-09-10DOI: 10.1109/MWP.2003.1422920
H. Yilmaz, G. Chakam, A. Breuel, W. Vogel, M. Berroth, W. Freude
We present a 1/spl times/2 phased array antenna with optical beamforming and integrated phase shifter. We are able to steer the radiation pattern by a continuous phase shift up to 360/spl deg/.
{"title":"Microstrip line fed patch antenna with liquid crystal phase shifter for optically generated RF-signals","authors":"H. Yilmaz, G. Chakam, A. Breuel, W. Vogel, M. Berroth, W. Freude","doi":"10.1109/MWP.2003.1422920","DOIUrl":"https://doi.org/10.1109/MWP.2003.1422920","url":null,"abstract":"We present a 1/spl times/2 phased array antenna with optical beamforming and integrated phase shifter. We are able to steer the radiation pattern by a continuous phase shift up to 360/spl deg/.","PeriodicalId":432014,"journal":{"name":"MWP 2003 Proceedings. International Topical Meeting on Microwave Photonics, 2003.","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133845748","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 : 2003-09-10DOI: 10.1109/MWP.2003.1422896
B. Vidal, V. Polo, J. Corral, J. Marti
A technique to reduce the cost of photonic microwave filters based on WDM signals and dispersive media is presented. It allows to implement filters showing N/spl times/M taps using N+M components instead of N/spl times/M components, as required in previous proposals.
{"title":"Cost-effective photonic microwave filter employing tap reusing","authors":"B. Vidal, V. Polo, J. Corral, J. Marti","doi":"10.1109/MWP.2003.1422896","DOIUrl":"https://doi.org/10.1109/MWP.2003.1422896","url":null,"abstract":"A technique to reduce the cost of photonic microwave filters based on WDM signals and dispersive media is presented. It allows to implement filters showing N/spl times/M taps using N+M components instead of N/spl times/M components, as required in previous proposals.","PeriodicalId":432014,"journal":{"name":"MWP 2003 Proceedings. International Topical Meeting on Microwave Photonics, 2003.","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134350880","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 : 2003-09-10DOI: 10.1109/MWP.2003.1422866
T. Bánky, B. Horvath, T. Berceli
This paper shows a new way for the enhancement of high Q - low phase noise millimeterwave opto-electronic oscillator structure. The new configuration enables us to improve the oscillator's noise characteristics without the need for the utilization of especially expensive and sensitive elements (such as high Q filters, etc.).
{"title":"A new approach for ultra-low phase noise millimeterwave opto-electronic oscillators","authors":"T. Bánky, B. Horvath, T. Berceli","doi":"10.1109/MWP.2003.1422866","DOIUrl":"https://doi.org/10.1109/MWP.2003.1422866","url":null,"abstract":"This paper shows a new way for the enhancement of high Q - low phase noise millimeterwave opto-electronic oscillator structure. The new configuration enables us to improve the oscillator's noise characteristics without the need for the utilization of especially expensive and sensitive elements (such as high Q filters, etc.).","PeriodicalId":432014,"journal":{"name":"MWP 2003 Proceedings. International Topical Meeting on Microwave Photonics, 2003.","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133615119","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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