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OPTIME - Time and frequency dissemination system based on fiber optical network - Local repository project 基于光纤网络的时频传播系统-本地存储库项目
2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331498
L. Buczek, J. Kołodziej, P. Krehlik, M. Lipinski, L. Sliwczynski, A. Czubla, W. Adamowicz, J. Igalson, T. Pawszak, J. Pieczerak, A. Binczewski, W. Bogacki, P. Ostapowicz, M. Stroinski, K. Turza, J. Weglarz, P. Dunst, P. Lejba, D. Lemański, J. Nawrocki, P. Nogas
{"title":"OPTIME - Time and frequency dissemination system based on fiber optical network - Local repository project","authors":"L. Buczek, J. Kołodziej, P. Krehlik, M. Lipinski, L. Sliwczynski, A. Czubla, W. Adamowicz, J. Igalson, T. Pawszak, J. Pieczerak, A. Binczewski, W. Bogacki, P. Ostapowicz, M. Stroinski, K. Turza, J. Weglarz, P. Dunst, P. Lejba, D. Lemański, J. Nawrocki, P. Nogas","doi":"10.1109/EFTF.2014.7331498","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331498","url":null,"abstract":"The main goal of OPTIME project is to design and to create an infrastructure for a long range dissemination system for transfer of ultraprecise time scale and reference frequency signals in telecommunication networks. OPTIME dissemination system is based on three main elements: reference time and frequency laboratories, local time and frequency repositories and fiber optical network with specialized transmission equipment to transfers signals between laboratories, repositories and end-users. This article describes all elements of OPTIME system with particular emphasis on local time and frequency repositories. Moreover this article also describes experience gained during more than two years of experiments on fiber connection between Central Office of Measures (GUM) in Warsaw and the Astrogeodynamic Observatory (AOS) in Borowiec, which are reference laboratories in OPTIME system.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114344120","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}
引用次数: 1
Advanced ordered piezoelectric Ca3NbGa3Si2O14 crystal: Piezoelectric and acoustic properties 先进有序压电晶体Ca3NbGa3Si2O14:压电和声学特性
2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331427
D. Roshchupkin, Olga Plotitcyna, D. Irzhak, E. Emelin, O. Buzanov, S. Sakharov
{"title":"Advanced ordered piezoelectric Ca3NbGa3Si2O14 crystal: Piezoelectric and acoustic properties","authors":"D. Roshchupkin, Olga Plotitcyna, D. Irzhak, E. Emelin, O. Buzanov, S. Sakharov","doi":"10.1109/EFTF.2014.7331427","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331427","url":null,"abstract":"A five-component ordered crystal of lanthanum-gallium silicate family Ca3NbGa3Si2O14 (CNGS) was grown by the Czochralski method. The unit cell parameters were determined by using the powder diffraction technique. Independent piezoelectric strain coefficients d11 and d14 were measured by high-resolution X-ray diffraction under the external electric field application which caused changes in the interplanar spacing because of the reverse piezoelectric effect. Surface acoustic wave (SAW) propagation in CNGS crystal was investigated by X-ray diffraction method at the synchrotron radiation source BESSSY II. The velocities of SAW propagation and power flow angles were measured in the Y-, X-, and yxl/+36°-cuts of CNGS crystal.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117054115","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}
引用次数: 0
Micro-miniature, SMD, ultra low phase noise, high frequency OCXO 微微型、贴片、超低相位噪声、高频OCXO
2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331510
R. Boroditsky, Jorge Gómez
{"title":"Micro-miniature, SMD, ultra low phase noise, high frequency OCXO","authors":"R. Boroditsky, Jorge Gómez","doi":"10.1109/EFTF.2014.7331510","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331510","url":null,"abstract":"Ultra low phase noise (ULPN), high frequency (HF) reference OCXOs have become extremely critical components in radar, communications, military systems, and instrumentation (test and measurement). All of these applications to somewhat different extend would greatly benefit from significantly reduced size, supply voltage, power consumption, and vibration sensitivity of the reference. Current state of the art ULPN (around -180 dBc/Hz on the noise floor) HF (80 to 125 MHz) OCXO are quite bulky - around 20 to 80 cc, use supply voltage of 12 V to 15 V and consume more than 2 W of power at room temperature. Additional vibration isolation would significantly increase the volume even further. The goal of this work was to develop an OCXO with order of magnitude smaller size, light weight, lower supply voltage, lower power consumption, surface mountable, while maintaining outstanding ultra low phase noise and stability performance. The implementation of the original oven and oscillator circuit designs resulted in the development of a SMD OCXO with the dimensions of 21×14×6.8 mm3, volume of 2.0 cc, operating off 5.0 V supply voltage, consuming 1 W of power at room temperature, and exhibiting the phase noise (100 MHz carrier), of -110 dBc/Hz at 10 Hz offset, -163 dBc/Hz at 1 KHz offset, and better than -180 dBc/Hz on the noise floor. The minuscule size allows for implementation in small and PXI based instrumentation. Also it perfectly lends itself to vibration dampening and isolation without adding significant bulk to the system.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115405997","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}
引用次数: 1
Predicting the corrections for the polish timescale UTC(PL) using GMDH and GRNN neural networks 利用GMDH和GRNN神经网络预测波兰时间尺度UTC(PL)的修正
2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331539
L. Sobolewski
{"title":"Predicting the corrections for the polish timescale UTC(PL) using GMDH and GRNN neural networks","authors":"L. Sobolewski","doi":"10.1109/EFTF.2014.7331539","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331539","url":null,"abstract":"The article presents the results of research on the prediction of the polish timescale UTC(PL) based on GMDH and GRNN neural networks, which were compared with the results obtained in the GUM using the analytical linear regression method. The lowest values of the prediction error was obtained for GMDH neural network for time series analysis methods and data prepared on the basis of time series ts1. These results were significantly better than the prediction error values obtained in GUM using analytical linear regression method. In the case of GRNN neural network prediction errors obtained using the regression method and data prepared on the basis of time series ts2 are very close to the values of prediction error obtained in the GUM. However, for data prepared on the basis of time series ts1 reached a very high value.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"54 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123079091","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}
引用次数: 8
Phase-sensitive and fast-scanning laser probe system for radio frequency surface/bulk acoustic wave devices 用于射频表面/体声波器件的相敏快速扫描激光探测系统
2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331425
K. Hashimoto, T. Omori
{"title":"Phase-sensitive and fast-scanning laser probe system for radio frequency surface/bulk acoustic wave devices","authors":"K. Hashimoto, T. Omori","doi":"10.1109/EFTF.2014.7331425","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331425","url":null,"abstract":"This paper reviews a phase-sensitive and fast-scanning laser probe system developed by the authors' group for the diagnosis of radio frequency (RF) surface and bulk acoustic wave (SAW/BAW) devices. The system is based on the Sagnac interferometer, which is insensitive to low frequency vibration. This feature allows us to maximize the scanning speed without sacrificing the signal-to-noise ratio of the measurement. It is demonstrated that high quality two-dimensional (2D) image of SAW/BAW field patterns can be captured in minutes order. Currently the maximum applicable frequency is 6 GHz. Because of the phase sensitivity, the measured field in the space domain is readily converted into the wavenumber domain by the 2D Fourier Transform.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123094474","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}
引用次数: 1
Laser stabilization system for space application based on hydroxide-catalysis bonding 基于氢氧催化键合的空间激光稳定系统
2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331465
Yingxin Luo, Hongyin Li, Huizong Duan, H. Yeh
{"title":"Laser stabilization system for space application based on hydroxide-catalysis bonding","authors":"Yingxin Luo, Hongyin Li, Huizong Duan, H. Yeh","doi":"10.1109/EFTF.2014.7331465","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331465","url":null,"abstract":"A prototype of laser stabilization system for the application of inter-satellite laser ranging has been constructed. A quasi-monolithic optical bench including the cavity and the mode-matching coupling optics is fabricated with ultra-low expansion (ULE) glass by hydroxide-catalysis bonding technique. Nd:YAG solid-state laser is frequency stabilized to the quasi-monolithic cavity via Pound-Drever-Hall (PDH) method with all fiber devices. A digital feedback controller based on FPGA is developed with sufficient control bandwidth. The preliminary testing results is discussed in this report.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129955654","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}
引用次数: 1
Time transfer capabilities in the DTM transmission system DTM传输系统中的时间传输能力
2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331472
Magnus Danielson
{"title":"Time transfer capabilities in the DTM transmission system","authors":"Magnus Danielson","doi":"10.1109/EFTF.2014.7331472","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331472","url":null,"abstract":"This article describes the enhancement of a commercial network system to include network wide time-transfer capability to meet customer needs for GPS independent timing of broadcast transmitters. The Dynamic synchronous Transfer Mode (DTM) transmission system is a network technology based on a 8 kHz Time Division Multiplex (TDM) structure, providing the basis for predictable and reliable transport and switching. With the adaptation of various native signals, it has found use in broadcast networks for both contribution and distribution networks. This article describe how the commercial DTM system was enhanced to include a time-transfer capability within the existing product range in order to support GPS independent transmission network for critical national broadcast networks operating DVB-T SFN transmissions.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129684176","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}
引用次数: 0
Complete bandgap SAW phononic resonators 完整带隙SAW声子谐振器
2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331487
V. Yantchev
{"title":"Complete bandgap SAW phononic resonators","authors":"V. Yantchev","doi":"10.1109/EFTF.2014.7331487","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331487","url":null,"abstract":"2D composite grating building blocks with hexagonal symmetry are proposed as efficient reflectors and transducers in the design of surface acoustic wave (SAW) resonators. Design parameters ensuring complete bandgap characteristics are deduced by means of finite element analysis (FEA). SAW resonators employing phononic building blocks with complete bandgaps are designed, fabricated and tested. Further, the influence of the phononic grating over the spurious responses and the busbar quality are experimentally tested. All test structures are fabricated on 128 Y-X LiNbO3 using low resolution optical lithography and standard metal deposition and etching routines.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130563230","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}
引用次数: 2
Latest improvements in the performances of a cryogenic sapphire oscillator 低温蓝宝石振荡器性能的最新改进
2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331424
S. Grop, C. Fluhr, J. Masson, Y. Kersalé, E. Rubiola, V. Giordano, B. Dubois, G. Haye
{"title":"Latest improvements in the performances of a cryogenic sapphire oscillator","authors":"S. Grop, C. Fluhr, J. Masson, Y. Kersalé, E. Rubiola, V. Giordano, B. Dubois, G. Haye","doi":"10.1109/EFTF.2014.7331424","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331424","url":null,"abstract":"In this paper, we report the characterization results of our cryogenic sapphire oscillators. The oscillator incorporates a sapphire resonator cooled down at the liquid helium temperature in a cryocooled ultra-low vibration cryostat. The phase noise of a single CSO is -104dBc/Hz at 1 Hz offset of the 10 GHz carrier. The frequency fluctuations were measured with three frequency counters using different statistical algorithms. The best result at 1 s integration time is σy(1s) = 6.5 × 10-16. For the integration time above 10 s, the Allan deviation of a single CSOs computed from each data sets reaches a floor around 3.2 × 10-16 at 100 s integration time for a daily frequency stability of 3.5 × 10-15.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"56 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115941715","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}
引用次数: 4
Low-g sensitivity of HBAR oscillator HBAR振荡器的低g灵敏度
2014 European Frequency and Time Forum (EFTF) Pub Date : 2014-06-23 DOI: 10.1109/EFTF.2014.7331528
Baron Thomas, M. Gilles, Bassignot Florent, C. Nicolas, Lesage Jean-Marc, R. Alexandre, Lassagne Pierre-Patrick, Rabus David, Chommeloux Luc, Ballandras Sylvain
{"title":"Low-g sensitivity of HBAR oscillator","authors":"Baron Thomas, M. Gilles, Bassignot Florent, C. Nicolas, Lesage Jean-Marc, R. Alexandre, Lassagne Pierre-Patrick, Rabus David, Chommeloux Luc, Ballandras Sylvain","doi":"10.1109/EFTF.2014.7331528","DOIUrl":"https://doi.org/10.1109/EFTF.2014.7331528","url":null,"abstract":"Vibration sensitivity is an important specification for oscillators dedicated to space or airborne systems. Vibration sensitivity can be due to from resonator, oscillator loop or non-oscillator components as wire for example. Commonly, the main source of acceleration sensitivity is due to the resonator. Active compensation can be used to decrease this effect, but such systems are not easily miniaturized. This paper presents quality factor and temperature coefficient of frequency of three different high-overtone bulk acoustic resonator and phase noise of corresponding oscillators and the first result of oscillator vibration sensitivity based on high-overtone bulk acoustic resonator. Three resonators based on different material are tested.","PeriodicalId":129873,"journal":{"name":"2014 European Frequency and Time Forum (EFTF)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128001788","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}
引用次数: 2
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