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2018 IEEE International Frequency Control Symposium (IFCS)最新文献

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A Compact Design of a Transportable Calcium Optical Frequency Standard 可移动钙光频标的紧凑设计
2018 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2018-05-01 DOI: 10.1109/fcs.2018.8597454
Xiaobo Xue, Zhenwei Zhang, Xu Zhang, Huan Zhao, Nuan-rang Wang, Xing Chen, Li Zhang, Ren-fu Yang, Deng Liu
{"title":"A Compact Design of a Transportable Calcium Optical Frequency Standard","authors":"Xiaobo Xue, Zhenwei Zhang, Xu Zhang, Huan Zhao, Nuan-rang Wang, Xing Chen, Li Zhang, Ren-fu Yang, Deng Liu","doi":"10.1109/fcs.2018.8597454","DOIUrl":"https://doi.org/10.1109/fcs.2018.8597454","url":null,"abstract":"Since the instability and uncertainty of optical frequency standards have achieved the level of 10−18, and since the locking time of these frequency standards has become much longer, it is appropriate and necessary to build more practical optical frequency standards. Here we propose a compact design of a transportable Calcium optical frequency standard with the purpose of realizing a long time running optical clock. The design consists of an electronic cabinet and an optical cabinet. The total volume designed is 1.2 m3, with the electronic cabinet 0.8 m3and the optical cabinet 0.4 m3. It is designed to achieve a short term instability of $5times 10^{-14} tau^{-1/2}$ (1–1000s) and a mean time between failures (MTBF) of 8 hours. It may have the potential to be used as an optical timekeeping clock with the long term instability and MTBF optimized.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121924845","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
Direct Selection and Amplification of an Optical Frequency Comb via Injection Locking for Second Cooling Laser of Strontium Optical Clock 锶光钟二次冷却激光注入锁紧直接选择和放大光频梳
2018 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2018-05-01 DOI: 10.1109/FCS.2018.8597540
Qinfang Xu, Mojuan Yin, Shan-he Wang, J. Ju, Dehuan Kong, Yebing Wang, B. Lu, Hong Chang
{"title":"Direct Selection and Amplification of an Optical Frequency Comb via Injection Locking for Second Cooling Laser of Strontium Optical Clock","authors":"Qinfang Xu, Mojuan Yin, Shan-he Wang, J. Ju, Dehuan Kong, Yebing Wang, B. Lu, Hong Chang","doi":"10.1109/FCS.2018.8597540","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597540","url":null,"abstract":"The work presented in this paper is based on an optical frequency comb injection-locking, active filtering and amplification method to build a narrow linewidth laser for second cooling of the strontium atoms in an optical lattice clock. An optical femtosecond laser comb with mode spacing of 250 MHz as master laser is applied to directly inject into an external cavity semiconductor laser at 689 nm called slave laser, a single mode is selected and amplified from the optical femtosecond laser comb.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123340298","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
Highly Stable and Low Phase Noise 10 GHz RF Signal Generation Based on a Sub-Harmonic Injection Locked Optoelectronic Oscillator 基于次谐波注入锁相光电振荡器的高稳定低相位噪声10ghz射频信号生成
2018 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2018-05-01 DOI: 10.1109/FCS.2018.8597445
H. Peng, H. Du, Rui Guo, Yongchi Xu, Cheng Zhang, Jingbiao Chen, Zhangyuan Chen
{"title":"Highly Stable and Low Phase Noise 10 GHz RF Signal Generation Based on a Sub-Harmonic Injection Locked Optoelectronic Oscillator","authors":"H. Peng, H. Du, Rui Guo, Yongchi Xu, Cheng Zhang, Jingbiao Chen, Zhangyuan Chen","doi":"10.1109/FCS.2018.8597445","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597445","url":null,"abstract":"A low phase noise and highly stable 10 GHz RF signal generation system based on a sub-harmonic injection locked optoelectronic oscillator (OEO) is proposed and experimentally demonstrated. By externally injecting a sub-harmonic of the 10 GHz free-running OEO to the OEO loop, the phase noise at 10 Hz offset of the 10 GHz oscillation RF signal is reduced by 40 dB when compared with the free-running OEO. The influence of the power of the injection RF signal on the phase noise performance of the injection locked OEO is also experimentally investigated.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115841407","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: 3
Microwave Frequency Generation Using a Non-Octave-Spanning Optical Frequency Comb 使用非八度跨越光学频率梳产生微波频率
2018 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2018-05-01 DOI: 10.1109/FCS.2018.8597459
J. Cahill, Weimin Zhou, C. Menyuk
{"title":"Microwave Frequency Generation Using a Non-Octave-Spanning Optical Frequency Comb","authors":"J. Cahill, Weimin Zhou, C. Menyuk","doi":"10.1109/FCS.2018.8597459","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597459","url":null,"abstract":"Self-frequency stabilization of the repetition rate of an optical frequency comb using a short-path-length interferometer can be used to generate ultra-low phase noise microwaves. Moreover, this technique is compatible is photonic integration, indicating a pathway towards a chip-scale low-phase-noise microwave frequency source. Separately, difference-frequency stabilization allows ultra-low phase noise microwave generation without carrier-envelope phase locking. In this work, we evaluate the challenges in implementing a difference-frequency stabilization scheme with a short-path-length-interferometer. We find that the combination of a short-path-length and lower frequency multiplication factor will exacerbate electronic noise contributions, influence the ability of the feedback loop to achieve lock. We also find that dispersion management is essential to generating usable error signals for single-mode fiber delay lines that are longer than approximately 4 m.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131900580","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
Route to a Portable Optical Clock 到便携式光时钟的路由
2018 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2018-05-01 DOI: 10.1109/FCS.2018.8597579
Matthew Aldous, S. Viswam, J. Bass, M. Menchetti, Qasim Ubaid, Jonathan M. Jones, David Morris, P. Molony, Markus Gellesch, K. Bongs, Y. Singh, I. Hill, Ross Williams, P. Gill
{"title":"Route to a Portable Optical Clock","authors":"Matthew Aldous, S. Viswam, J. Bass, M. Menchetti, Qasim Ubaid, Jonathan M. Jones, David Morris, P. Molony, Markus Gellesch, K. Bongs, Y. Singh, I. Hill, Ross Williams, P. Gill","doi":"10.1109/FCS.2018.8597579","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597579","url":null,"abstract":"We report on progress in the development of subsystem-level devices which serve as building blocks for the next generation of portable atomic clocks. Specifically, we discuss the engineering of small, low-power, low-temperature strontium vapour dispensers and a compact optical resonator useful for the stabilisation of multiple lasers.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133589074","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
A Physical Sine-to-Square Converter Noise Model 物理正弦平方变换器噪声模型
2018 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2018-05-01 DOI: 10.1109/FCS.2018.8597525
Attila Kinali
{"title":"A Physical Sine-to-Square Converter Noise Model","authors":"Attila Kinali","doi":"10.1109/FCS.2018.8597525","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597525","url":null,"abstract":"While sinusoid signal sources are used whenever low phase noise is required, conversion to a square wave-form is necessary when interfacing with digital circuits. Although have been analyzed a few times in various context, to the best knowledge of the author, there is no complete treatment and explanation of all noise sources within a sine-to-square converter. We attempt to give a quantitative, predictive and physically based noise model of sine-to-square converters without fitting parameters other than those imposed by the circuit itself.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134135888","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
Low Loss Orthogonal Frequency Coded Surface Acoustic Wave Correlator Filters 低损耗正交频率编码表面声波相关滤波器
2018 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2018-05-01 DOI: 10.1109/FCS.2018.8597577
M. ScottSmith, A. Weeks, D. Malocha
{"title":"Low Loss Orthogonal Frequency Coded Surface Acoustic Wave Correlator Filters","authors":"M. ScottSmith, A. Weeks, D. Malocha","doi":"10.1109/FCS.2018.8597577","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597577","url":null,"abstract":"Low loss orthogonal frequency coded (OFC) surface acoustic wave (SAW) correlator filters are demonstrated for use in conjunction with simultaneous transmit and receive (STAR) radios. Single phase unidirectional transducers (SPUDTs) are used to decrease insertion loss of conventional SAW correlators to facilitate use in the transmitter and receiver of STAR radios.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131611946","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
Highly Stable Miniaturized OCXO with Heater-Embedded Ceramic Package 高度稳定的小型化OCXO与加热器嵌入式陶瓷封装
2018 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2018-05-01 DOI: 10.1109/FCS.2018.8597561
W. Hsieh, C. Hsu, Chia-Wei Chen, Chen-Ya Weng, Sheng-Hsiang Kao
{"title":"Highly Stable Miniaturized OCXO with Heater-Embedded Ceramic Package","authors":"W. Hsieh, C. Hsu, Chia-Wei Chen, Chen-Ya Weng, Sheng-Hsiang Kao","doi":"10.1109/FCS.2018.8597561","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597561","url":null,"abstract":"This paper reports on the development of a highly stable miniaturized Oven Controlled Crystal Oscillator (OCXO) in the size of 9.7 × 7.5 mm consisting of heater-embedded ceramic package. The embedded heater layer establishes a symmetrical thermal field to achieve good temperature uniformity, which maintains the oven stability and reduce the power consumption. In addition, the SC-cut crystal is utilized for the proposed miniaturized OCXO to further improve the temperature stability, aging, and phase noise. As a result, this 9.7 × 7.5 mm OCXO has achieved temperature stability of ±3 ppb across −40 to 85 °C. Furthermore, we also demonstrated the proposed miniaturized OCXO could be complied with Stratum 3E requirements.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123328335","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: 6
Investigation into a GPS Time Pulse Radiator for Testing Time-Stamp Accuracy of a Radio Telescope 用于射电望远镜时间戳精度测试的GPS时间脉冲辐射器研究
2018 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2018-05-01 DOI: 10.1109/FCS.2018.8597477
Z. Ramudzuli, T. Abbott
{"title":"Investigation into a GPS Time Pulse Radiator for Testing Time-Stamp Accuracy of a Radio Telescope","authors":"Z. Ramudzuli, T. Abbott","doi":"10.1109/FCS.2018.8597477","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597477","url":null,"abstract":"The MeerKAT radio telescope under construction in South Africa is required to tag the arrival time of a signal to within 10 ns of Coordinated Universal Time (UTC). The telescope has a local maser clock ensemble, compared to UTC by dual-band GPS receivers, and transferred to the digitizers of the array by an optical fiber system. In order to verify the accuracy of the end-to-end time tagging of samples, a portable instrument was constructed that transmits a periodic time signal. This GPS time pulse radiator (GTR) is mounted 10 m away from the telescope L-band feed horn, and radiates a broadband signal of −20 dBm. The signal is modulated by turning off at each UTC second, using the 1PPS output of a GPS receiver. The recorded voltage stream of the telescope is searched for the time signal and the corresponding timestamp compared to its expected value. While less accurate than the masers and dual-band GPS, this technique is simple and the instrument is easily characterized. Laboratory tests of the GTR showed its RF pulse to be at $1.65pm 0.1 mu mathbf{s}$ after the UTC second. Tests on the telescope revealed a $13.0pm 0.3 mu mathrm{s}$ deviation from the expected timestamp value. This was later found to be due to a buffer in the digitizer FPGA, and confirmed by pulsar timing. The GTR concept allows simple, independent testing of a radio telescope pulsar timing system. Future work is planned to improve the shape of the transmitted signal, to study GPS timing errors and correction techniques, and to process the received data using a more standard pulsar timing pipeline.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127543793","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
Method for Measuring the Properties of Liquid by a Single QCM at Different Temperatures 用单个QCM测量不同温度下液体性质的方法
2018 IEEE International Frequency Control Symposium (IFCS) Pub Date : 2018-05-01 DOI: 10.1109/FCS.2018.8597558
Shuang Liao, P. Ye, Feng Tan, Jiquan Chen, Shuaishuai Shi
{"title":"Method for Measuring the Properties of Liquid by a Single QCM at Different Temperatures","authors":"Shuang Liao, P. Ye, Feng Tan, Jiquan Chen, Shuaishuai Shi","doi":"10.1109/FCS.2018.8597558","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597558","url":null,"abstract":"As an ultra-sensitive mass sensing device, quartz crystal microbalance (QCM) is widely used in gas phase and liquid phase. Previous research reported a novel theoretical model and a new method to separate measurement of density and viscosity of liquid only using a single QCM, based on the analysis of frequency response at room temperature. In this paper, current experimental results demonstrate the method for measuring properties of liquid by using a single QCM is valid at different temperatures.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126389105","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
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