Remarkably, there exists optimum coupler access waveguide widths which give minimum imbalance. Low excess loss is also achieved at the optimum width. These model results are supported by simulations, and experimental data from InP/InGaAsP couplers.
{"title":"Optimizing imbalance and loss in 2/spl times/2 3 dB multimode interference couplers via access waveguide width","authors":"M. T. Hill, X. Leijtens, G. Khoe, M. Smit","doi":"10.1109/JLT.2003.818164","DOIUrl":"https://doi.org/10.1109/JLT.2003.818164","url":null,"abstract":"Remarkably, there exists optimum coupler access waveguide widths which give minimum imbalance. Low excess loss is also achieved at the optimum width. These model results are supported by simulations, and experimental data from InP/InGaAsP couplers.","PeriodicalId":432096,"journal":{"name":"Conference on Lasers and Electro-Optics, 2003. CLEO '03.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128060018","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 : 2003-06-06DOI: 10.1108/03056120410512145
M. Moynihan, C. Allen, T. Ho, L. Little, J. Shelnut, B. Sicard, H. Zheng, G. Khanarian
There are a number of organic, inorganic and hybrid inorganic waveguide materials that are currently being used for a wide variety of optical interconnect applications. Depending upon the approach, waveguide formation is performed using a combination of lithographic and/or reactive ion etch techniques. Often the processes involved with waveguide formation require unique processing conditions, hazardous process chemicals and specialized pieces of capital equipment. In addition, many of the materials have been optimized for silicon substrates but are not compatible with printed wire board (PWB) substrates and processes.
{"title":"Aqueous base compatible waveguide materials for optical interconnect applications","authors":"M. Moynihan, C. Allen, T. Ho, L. Little, J. Shelnut, B. Sicard, H. Zheng, G. Khanarian","doi":"10.1108/03056120410512145","DOIUrl":"https://doi.org/10.1108/03056120410512145","url":null,"abstract":"There are a number of organic, inorganic and hybrid inorganic waveguide materials that are currently being used for a wide variety of optical interconnect applications. Depending upon the approach, waveguide formation is performed using a combination of lithographic and/or reactive ion etch techniques. Often the processes involved with waveguide formation require unique processing conditions, hazardous process chemicals and specialized pieces of capital equipment. In addition, many of the materials have been optimized for silicon substrates but are not compatible with printed wire board (PWB) substrates and processes.","PeriodicalId":432096,"journal":{"name":"Conference on Lasers and Electro-Optics, 2003. CLEO '03.","volume":"2 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123693688","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 : 2003-06-06DOI: 10.1109/QELS.2003.238378
Jun Ye, D.J. Jones, R. J. Jones, K. Holman, S. Foreman
Summary form only given. We will discuss the strong impact of precision phase control of optical pulses to fields ranging from ultrafast science Io precision metrology.
只提供摘要形式。我们将讨论光脉冲的精确相位控制对从超快科学到精密计量等领域的强大影响。
{"title":"Precise phase control of short pulses","authors":"Jun Ye, D.J. Jones, R. J. Jones, K. Holman, S. Foreman","doi":"10.1109/QELS.2003.238378","DOIUrl":"https://doi.org/10.1109/QELS.2003.238378","url":null,"abstract":"Summary form only given. We will discuss the strong impact of precision phase control of optical pulses to fields ranging from ultrafast science Io precision metrology.","PeriodicalId":432096,"journal":{"name":"Conference on Lasers and Electro-Optics, 2003. CLEO '03.","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129419044","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}
N. Schupper, Y. Rabin, I. Freund, S. Greenstein, M. Rosenblu
We study the variation in the back-scattered light from a slab of silicate glass on a change of the glass temperature. Coherent illumination scattered from a ground surface of the glass creates a speckle pattern resulting from the sum of two different scattering events: one originating from the backward scattering from the rough surface, and the second from the forward-scattered light, which is Fresnel reflected from the flat back surface of the slab and rescattered (in the forward direction) by the rough surface. Experimental and theoretical studies show that on heating the glasses, the correlation between the initial and the final speckle patterns oscillates as a function of temperature with a frequency proportional to the thermally induced changes in the optical path in the glass. A measurement of the thermal expansion coefficient α is obtained from the oscillations with 0.01% accuracy, provided that the change in refractive index with temperature is known. The observed slow decrease in the amplitude of the temperature-induced oscillations is in agreement with the theoretical analysis of the effect of uniform thermal expansion of the scattering surface. The surface expansion also results in a damped, slow oscillation of the correlation due to the nonrandom motion of the expanding scatterers, which result in the partial rephasing of the scattered waves when the scatterers move a distance on the order of a wavelength. If the refractive index change with temperature is unknown, the decrease in the amplitude of oscillations can be used to determine α, the thermal expansion coefficient while the oscillations can be used to determine the refractive index change with temperature. The method presented is thus an alternative for measuring the thermal expansion coefficient and the change of index with temperature, and can be applied when dealing with strongly scattering surfaces, where one cannot use the normal fringe method. Different glass thicknesses and sample tilts with respect to the incident laser beam are shown to modify the correlation function.
{"title":"Effect of thermal expansion on speckle correlation from surface scattering of a transparent dielectric slab","authors":"N. Schupper, Y. Rabin, I. Freund, S. Greenstein, M. Rosenblu","doi":"10.1117/1.1635833","DOIUrl":"https://doi.org/10.1117/1.1635833","url":null,"abstract":"We study the variation in the back-scattered light from a slab of silicate glass on a change of the glass temperature. Coherent illumination scattered from a ground surface of the glass creates a speckle pattern resulting from the sum of two different scattering events: one originating from the backward scattering from the rough surface, and the second from the forward-scattered light, which is Fresnel reflected from the flat back surface of the slab and rescattered (in the forward direction) by the rough surface. Experimental and theoretical studies show that on heating the glasses, the correlation between the initial and the final speckle patterns oscillates as a function of temperature with a frequency proportional to the thermally induced changes in the optical path in the glass. A measurement of the thermal expansion coefficient α is obtained from the oscillations with 0.01% accuracy, provided that the change in refractive index with temperature is known. The observed slow decrease in the amplitude of the temperature-induced oscillations is in agreement with the theoretical analysis of the effect of uniform thermal expansion of the scattering surface. The surface expansion also results in a damped, slow oscillation of the correlation due to the nonrandom motion of the expanding scatterers, which result in the partial rephasing of the scattered waves when the scatterers move a distance on the order of a wavelength. If the refractive index change with temperature is unknown, the decrease in the amplitude of oscillations can be used to determine α, the thermal expansion coefficient while the oscillations can be used to determine the refractive index change with temperature. The method presented is thus an alternative for measuring the thermal expansion coefficient and the change of index with temperature, and can be applied when dealing with strongly scattering surfaces, where one cannot use the normal fringe method. Different glass thicknesses and sample tilts with respect to the incident laser beam are shown to modify the correlation function.","PeriodicalId":432096,"journal":{"name":"Conference on Lasers and Electro-Optics, 2003. CLEO '03.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127668223","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}
J. Cooley, J.Z. Wu, T. Antonsen, K. Kim, I. Alexeev, J. Fan, M. Milchberg
We present the results of experiments and simulations showing greatly improved coupling of an 80 mJ, 100 fs pulse to pre-formed plasma waveguides with end-funnels produced in backfill He gas.
{"title":"Effective coupling of ultra-intense laser pulses to funnel-mouthed plasma waveguides","authors":"J. Cooley, J.Z. Wu, T. Antonsen, K. Kim, I. Alexeev, J. Fan, M. Milchberg","doi":"10.1063/1.1862248","DOIUrl":"https://doi.org/10.1063/1.1862248","url":null,"abstract":"We present the results of experiments and simulations showing greatly improved coupling of an 80 mJ, 100 fs pulse to pre-formed plasma waveguides with end-funnels produced in backfill He gas.","PeriodicalId":432096,"journal":{"name":"Conference on Lasers and Electro-Optics, 2003. CLEO '03.","volume":"370 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116241826","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}
In this work, we demonstrate properties of a novel dual-pump four-wave mixing (DPFWM) scheme using a distributed-feedback (DFB) laser. The DFB laser acts as the mixing medium and one of the pump sources, while the second pump and the probe are injected. New experimental results are shown, including successful demonstration of the power laws of this scheme. We also show the effects of the wavelength detunings on the conversion efficiency and the signal-to-noise rations of the output signals.
{"title":"Dual-pump four-wave mixing in a distributed-feedback laser","authors":"M. Fisher, S. Chuang, A. Hsu","doi":"10.1117/12.474326","DOIUrl":"https://doi.org/10.1117/12.474326","url":null,"abstract":"In this work, we demonstrate properties of a novel dual-pump four-wave mixing (DPFWM) scheme using a distributed-feedback (DFB) laser. The DFB laser acts as the mixing medium and one of the pump sources, while the second pump and the probe are injected. New experimental results are shown, including successful demonstration of the power laws of this scheme. We also show the effects of the wavelength detunings on the conversion efficiency and the signal-to-noise rations of the output signals.","PeriodicalId":432096,"journal":{"name":"Conference on Lasers and Electro-Optics, 2003. CLEO '03.","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114153352","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}
We explore instantaneous response time of parametric optical nonlinearities that enable ultrafast processing of, and interaction between, spatial and temporal optical waveforms. A review of various signal-processing alternatives based on three- and four-wave-mixing arrangements among spatial and temporal information carrying waveforms will be discussed.
{"title":"Ultrafast information processing with optical nonlinearities","authors":"S. Fainman","doi":"10.1364/OC.2003.OThC3","DOIUrl":"https://doi.org/10.1364/OC.2003.OThC3","url":null,"abstract":"We explore instantaneous response time of parametric optical nonlinearities that enable ultrafast processing of, and interaction between, spatial and temporal optical waveforms. A review of various signal-processing alternatives based on three- and four-wave-mixing arrangements among spatial and temporal information carrying waveforms will be discussed.","PeriodicalId":432096,"journal":{"name":"Conference on Lasers and Electro-Optics, 2003. CLEO '03.","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130573539","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 : 2003-06-01DOI: 10.1007/3-540-27213-5_227
T. Nagashima, M. Hangyo
{"title":"Evaluation of complex optical constants of semiconductor wafers using terahertz ellipsometry","authors":"T. Nagashima, M. Hangyo","doi":"10.1007/3-540-27213-5_227","DOIUrl":"https://doi.org/10.1007/3-540-27213-5_227","url":null,"abstract":"","PeriodicalId":432096,"journal":{"name":"Conference on Lasers and Electro-Optics, 2003. CLEO '03.","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123061215","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}
D. Gusev, I. Soboleva, M. Martemyanov, F.M. Kim, T. Dolgova, A. A. Fedyanin, O. Aktsipetrov, G. Marowsky
Resonances in second- and third-harmonic spectra of two identical coupled porous silicon microcavities reveal strong dependence on parameters of separating photonic crystal.
两个相同耦合多孔硅微腔的二、三次谐振谱与分离光子晶体的参数有很强的相关性。
{"title":"Second- and third-harmonic generation spectroscopy of coupled microcavities formed from all-silicon photonic crystals","authors":"D. Gusev, I. Soboleva, M. Martemyanov, F.M. Kim, T. Dolgova, A. A. Fedyanin, O. Aktsipetrov, G. Marowsky","doi":"10.1557/PROC-797-W1.10","DOIUrl":"https://doi.org/10.1557/PROC-797-W1.10","url":null,"abstract":"Resonances in second- and third-harmonic spectra of two identical coupled porous silicon microcavities reveal strong dependence on parameters of separating photonic crystal.","PeriodicalId":432096,"journal":{"name":"Conference on Lasers and Electro-Optics, 2003. CLEO '03.","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115874213","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 : 2003-06-01DOI: 10.1109/QELS.2003.238327
P. Corkum, H. Niikura, F. Légaré, I. Litvinyuk, P. Dooley, M. Ivanov, D. Villeneuve
Summary form only given. Correlation offers a new route to time resolved measurements. Exploiting correlation we measure H/sub 2//sup +/ double ionization dynamics with sub-femtosecond precision and we measure vibrational wave packet dynamics in D/sub 2//sup +/ with ∼0.03- Angstrom, ∼200-Attosecond precision.
{"title":"Sub-femtosecond resolution wave packet measurements using correlated pairs","authors":"P. Corkum, H. Niikura, F. Légaré, I. Litvinyuk, P. Dooley, M. Ivanov, D. Villeneuve","doi":"10.1109/QELS.2003.238327","DOIUrl":"https://doi.org/10.1109/QELS.2003.238327","url":null,"abstract":"Summary form only given. Correlation offers a new route to time resolved measurements. Exploiting correlation we measure H/sub 2//sup +/ double ionization dynamics with sub-femtosecond precision and we measure vibrational wave packet dynamics in D/sub 2//sup +/ with ∼0.03- Angstrom, ∼200-Attosecond precision.","PeriodicalId":432096,"journal":{"name":"Conference on Lasers and Electro-Optics, 2003. CLEO '03.","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115358046","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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