We demonstrate that a multi-mode fiber can operate as a high-resolution spectrometer after calibrating the wavelength-dependent speckle patterns. A 20m fiber provides 8pm resolution and a 2cm fiber enables broadband operation covering the visible spectrum.
{"title":"Using a multimode fiber as a high-resolution, low-loss spectrometer","authors":"B. Redding, S. Popoff, H. Cao","doi":"10.1117/12.2050020","DOIUrl":"https://doi.org/10.1117/12.2050020","url":null,"abstract":"We demonstrate that a multi-mode fiber can operate as a high-resolution spectrometer after calibrating the wavelength-dependent speckle patterns. A 20m fiber provides 8pm resolution and a 2cm fiber enables broadband operation covering the visible spectrum.","PeriodicalId":10254,"journal":{"name":"CLEO: 2013","volume":"59 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72830708","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 : 2013-11-21DOI: 10.1109/IRMMW-THZ.2013.6665715
S. Bartalini, L. Consolino, A. Taschin, P. Bartolini, P. Cancio, M. De Pas, H. Beere, D. Ritchie, M. Vitiello, R. Torre, P. De Natale
The exploitation of a THz frequency comb for absolutely-referenced THz spectroscopy is presented. The frequency of a 2.5-THz QCL, phase-locked to the comb, is swept across a methanol line, providing the spectroscopy with and absolute-frequency scale.
{"title":"THz spectroscopy with an absolute frequency scale by a QCL phase-locked to a THz frequency comb","authors":"S. Bartalini, L. Consolino, A. Taschin, P. Bartolini, P. Cancio, M. De Pas, H. Beere, D. Ritchie, M. Vitiello, R. Torre, P. De Natale","doi":"10.1109/IRMMW-THZ.2013.6665715","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2013.6665715","url":null,"abstract":"The exploitation of a THz frequency comb for absolutely-referenced THz spectroscopy is presented. The frequency of a 2.5-THz QCL, phase-locked to the comb, is swept across a methanol line, providing the spectroscopy with and absolute-frequency scale.","PeriodicalId":10254,"journal":{"name":"CLEO: 2013","volume":"37 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2013-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84891157","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}
New interpretation of the high order harmonic generation in atomic gases interacting with laser fields is presented. The mechanism is in the temporal evolution of atomic electron density spatial distribution in the external laser field.
{"title":"High order optical harmonic generation in ionization-free regime: Origin of the process","authors":"A. Andreev, S. Stremoukhov","doi":"10.1364/JOSAB.30.001794","DOIUrl":"https://doi.org/10.1364/JOSAB.30.001794","url":null,"abstract":"New interpretation of the high order harmonic generation in atomic gases interacting with laser fields is presented. The mechanism is in the temporal evolution of atomic electron density spatial distribution in the external laser field.","PeriodicalId":10254,"journal":{"name":"CLEO: 2013","volume":"53 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76114470","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 : 2013-06-09DOI: 10.1364/CLEO_QELS.2013.QW3E.6
A. Armaroli, M. Droques, A. Mussot, A. Kudlinski, F. Biancalana
We analyze the modulational instability process induced by periodic variations of the parameters of a PCF along the propagation direction, induced by an analogue of the parametric resonance in mechanics.
我们分析了由力学中的参数共振引起的PCF参数沿传播方向的周期性变化所引起的调制不稳定过程。
{"title":"Scalar and vector modulational instability induced by parametric resonance in periodically tapered PCFs","authors":"A. Armaroli, M. Droques, A. Mussot, A. Kudlinski, F. Biancalana","doi":"10.1364/CLEO_QELS.2013.QW3E.6","DOIUrl":"https://doi.org/10.1364/CLEO_QELS.2013.QW3E.6","url":null,"abstract":"We analyze the modulational instability process induced by periodic variations of the parameters of a PCF along the propagation direction, induced by an analogue of the parametric resonance in mechanics.","PeriodicalId":10254,"journal":{"name":"CLEO: 2013","volume":"158 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73497783","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 : 2013-06-09DOI: 10.1364/CLEO_SI.2013.CM3F.7
M. Lee, C. Hsieh, Y. You, V. Su, Po-Hsun Chen, Hung-Chou Lin, Han-Bo Yang, Hung-Ming Chen, C. Kuan
We fabricate four different size grating structure on the top of the quantum well infrared photodetectors, then etch them into four different etching depth. With suitable design, the peak responsivity of the QWIPs is about thirteen times larger than that of the conventional QWIP.
{"title":"Performance enhancement in quantum well infrared photodetector utilizing the grating structure","authors":"M. Lee, C. Hsieh, Y. You, V. Su, Po-Hsun Chen, Hung-Chou Lin, Han-Bo Yang, Hung-Ming Chen, C. Kuan","doi":"10.1364/CLEO_SI.2013.CM3F.7","DOIUrl":"https://doi.org/10.1364/CLEO_SI.2013.CM3F.7","url":null,"abstract":"We fabricate four different size grating structure on the top of the quantum well infrared photodetectors, then etch them into four different etching depth. With suitable design, the peak responsivity of the QWIPs is about thirteen times larger than that of the conventional QWIP.","PeriodicalId":10254,"journal":{"name":"CLEO: 2013","volume":"45 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73827504","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 : 2013-06-09DOI: 10.1364/CLEO_QELS.2013.QF2B.1
D. Berry, M. Hall, H. Wiseman
We use the quantum Fisher information to show the ultimate limit to the accuracy of measurement of a fluctuating phase with a squeezed state. This measurement accuracy is achievable using an adaptive phase measurement.
{"title":"Ultimate limits to quantum-enhanced optical phase tracking","authors":"D. Berry, M. Hall, H. Wiseman","doi":"10.1364/CLEO_QELS.2013.QF2B.1","DOIUrl":"https://doi.org/10.1364/CLEO_QELS.2013.QF2B.1","url":null,"abstract":"We use the quantum Fisher information to show the ultimate limit to the accuracy of measurement of a fluctuating phase with a squeezed state. This measurement accuracy is achievable using an adaptive phase measurement.","PeriodicalId":10254,"journal":{"name":"CLEO: 2013","volume":"21 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74302901","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 : 2013-06-09DOI: 10.1364/CLEO_AT.2013.JTU4A.93
Qingqing Fan, Hongxi Yin, Wei-Shang Chang, Qingchu Zhao, Nan Zhao
An experiment of two channels WDM with 5 Gb/s has been performed. Chaotic characteristics of the propagated signals with different GVD and nonlinear impairments in this optical-fiber link have been analyzed through these experimental data.
{"title":"Experimental investigation on identification of physical defect of WDM optical-fiber links based on chaos theory","authors":"Qingqing Fan, Hongxi Yin, Wei-Shang Chang, Qingchu Zhao, Nan Zhao","doi":"10.1364/CLEO_AT.2013.JTU4A.93","DOIUrl":"https://doi.org/10.1364/CLEO_AT.2013.JTU4A.93","url":null,"abstract":"An experiment of two channels WDM with 5 Gb/s has been performed. Chaotic characteristics of the propagated signals with different GVD and nonlinear impairments in this optical-fiber link have been analyzed through these experimental data.","PeriodicalId":10254,"journal":{"name":"CLEO: 2013","volume":"35 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75164980","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 : 2013-06-09DOI: 10.1364/CLEO_SI.2013.CTU1H.7
B. Erkmen, J. Dahl, Z. Barber
We analyze the performance of FMCW ranging with photon-counting detectors. We derive the Cramér-Rao bound, then determine the optimal fraction of signal-arm photons, given a fixed mean number of source-generated photons.
{"title":"Performance analysis for FMCW ranging using photon-counting detectors","authors":"B. Erkmen, J. Dahl, Z. Barber","doi":"10.1364/CLEO_SI.2013.CTU1H.7","DOIUrl":"https://doi.org/10.1364/CLEO_SI.2013.CTU1H.7","url":null,"abstract":"We analyze the performance of FMCW ranging with photon-counting detectors. We derive the Cramér-Rao bound, then determine the optimal fraction of signal-arm photons, given a fixed mean number of source-generated photons.","PeriodicalId":10254,"journal":{"name":"CLEO: 2013","volume":"6 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75506397","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 : 2013-06-09DOI: 10.1364/CLEO_QELS.2013.QTH1A.5
M. Unlu, C. Berry, Sheng-Shian Li, Shang-Hua Yang, M. R. Hashemi, M. Jarrahi
A meta-surface with electromechanically switchable diamagnetic terahertz meta-molecules is presented and experimentally demonstrated. The presented reconfigurable meta-surface enables record-high modulation depths and modulation bandwidths at terahertz frequencies, without a compromise on modulation speed and modulation voltage.
{"title":"Electromechanically switchable diamagnetism for efficient terahertz modulation","authors":"M. Unlu, C. Berry, Sheng-Shian Li, Shang-Hua Yang, M. R. Hashemi, M. Jarrahi","doi":"10.1364/CLEO_QELS.2013.QTH1A.5","DOIUrl":"https://doi.org/10.1364/CLEO_QELS.2013.QTH1A.5","url":null,"abstract":"A meta-surface with electromechanically switchable diamagnetic terahertz meta-molecules is presented and experimentally demonstrated. The presented reconfigurable meta-surface enables record-high modulation depths and modulation bandwidths at terahertz frequencies, without a compromise on modulation speed and modulation voltage.","PeriodicalId":10254,"journal":{"name":"CLEO: 2013","volume":"2 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74485020","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 : 2013-06-09DOI: 10.1364/CLEO_QELS.2013.QF2C.2
J. Herrmann, M. Lucchini, A. Ludwig, M. Sabbar, R. Locher, L. Gallmann, U. Keller
We use attosecond transient absorption spectroscopy to investigate electron dynamics around the first ionization threshold of helium. Our results expose that electron wave-packet interference effects are insufficient to explain all the observed phenomena.
{"title":"Probing electron wave-packet interference","authors":"J. Herrmann, M. Lucchini, A. Ludwig, M. Sabbar, R. Locher, L. Gallmann, U. Keller","doi":"10.1364/CLEO_QELS.2013.QF2C.2","DOIUrl":"https://doi.org/10.1364/CLEO_QELS.2013.QF2C.2","url":null,"abstract":"We use attosecond transient absorption spectroscopy to investigate electron dynamics around the first ionization threshold of helium. Our results expose that electron wave-packet interference effects are insufficient to explain all the observed phenomena.","PeriodicalId":10254,"journal":{"name":"CLEO: 2013","volume":"29 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74642490","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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