Pub Date : 2007-11-12DOI: 10.1109/LEOS.2007.4382517
S. Manipatruni, Qianfan Xu, B. Schmidt, J. Shakya, Michal Lipson
We experimentally demonstrate electrooptic modulation in silicon at 18 Gbps (NRZ) in a micro-ring of 12 micron diameter using a pre-emphasis technique. Device simulations indicate that this technique can extend the bit rate to 40 Gbps.
{"title":"High Speed Carrier Injection 18 Gb/s Silicon Micro-ring Electro-optic Modulator","authors":"S. Manipatruni, Qianfan Xu, B. Schmidt, J. Shakya, Michal Lipson","doi":"10.1109/LEOS.2007.4382517","DOIUrl":"https://doi.org/10.1109/LEOS.2007.4382517","url":null,"abstract":"We experimentally demonstrate electrooptic modulation in silicon at 18 Gbps (NRZ) in a micro-ring of 12 micron diameter using a pre-emphasis technique. Device simulations indicate that this technique can extend the bit rate to 40 Gbps.","PeriodicalId":110592,"journal":{"name":"LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133838847","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 : 2007-11-12DOI: 10.1109/LEOS.2007.4382374
J. Tourrenc, S. Bouchoule, A. Khadour, Jean-Guy Provost, Jean Decobert, A. Miard, J. Harmand, J. Oudar
Optically-pumped vertical-external-cavity surface-emitting laser at 1.55 μm emits 77 mW CW single-mode output power with a SMSR above 60 dB at 20°C. Linewidth measurements showed the importance of low frequency fluctuation stabilization.
{"title":"High-power single-longitudinal-mode VECSEL at 1.55 μm with an hybrid metal-metamorphic bragg mirror","authors":"J. Tourrenc, S. Bouchoule, A. Khadour, Jean-Guy Provost, Jean Decobert, A. Miard, J. Harmand, J. Oudar","doi":"10.1109/LEOS.2007.4382374","DOIUrl":"https://doi.org/10.1109/LEOS.2007.4382374","url":null,"abstract":"Optically-pumped vertical-external-cavity surface-emitting laser at 1.55 μm emits 77 mW CW single-mode output power with a SMSR above 60 dB at 20°C. Linewidth measurements showed the importance of low frequency fluctuation stabilization.","PeriodicalId":110592,"journal":{"name":"LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115381030","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 : 2007-11-12DOI: 10.1109/LEOS.2007.4382463
D. Basu, D. Saha, M. Holub, Z. Mi, C.C. Wu, P. Bhattacharya
The characteristics of a InAs/GaAs self-organized quantum dot (QD) vertical cavity surface-emitting laser (VCSEL) with both non-magnetic and ferromagnetic (FM) contacts under an externally-applied magnetic field in the Faraday geometry is investigated. Considerable enhancement in output light intensity and threshold current reduction when the magnetic field is in the out-of-plane direction is observed. In contrast, little or no change is observed for an in-plane magnetic field.
{"title":"Threshold Current Reduction and Output Power Enhancement with Magnetic Field in Sub-Monolayer InAs Quantum Dot VCSELs","authors":"D. Basu, D. Saha, M. Holub, Z. Mi, C.C. Wu, P. Bhattacharya","doi":"10.1109/LEOS.2007.4382463","DOIUrl":"https://doi.org/10.1109/LEOS.2007.4382463","url":null,"abstract":"The characteristics of a InAs/GaAs self-organized quantum dot (QD) vertical cavity surface-emitting laser (VCSEL) with both non-magnetic and ferromagnetic (FM) contacts under an externally-applied magnetic field in the Faraday geometry is investigated. Considerable enhancement in output light intensity and threshold current reduction when the magnetic field is in the out-of-plane direction is observed. In contrast, little or no change is observed for an in-plane magnetic field.","PeriodicalId":110592,"journal":{"name":"LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115528135","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 : 2007-11-12DOI: 10.1109/LEOS.2007.4382502
A. Tabirian, D. P. Stanley, R. Selleck, L. H. Morton, S. Guch
We demonstrated efficient laser action in MWIR-180 mJ, 17.9% slope efficiency at 3.9 mum and in SWIR-85 mJ, 11% slope efficiency at 1.67 mum in Ho3+ doped fluoride lasers - in TEM00 mode operation.
{"title":"High Energy MWIR and New Eyesafe SWIR Lasers","authors":"A. Tabirian, D. P. Stanley, R. Selleck, L. H. Morton, S. Guch","doi":"10.1109/LEOS.2007.4382502","DOIUrl":"https://doi.org/10.1109/LEOS.2007.4382502","url":null,"abstract":"We demonstrated efficient laser action in MWIR-180 mJ, 17.9% slope efficiency at 3.9 mum and in SWIR-85 mJ, 11% slope efficiency at 1.67 mum in Ho<sup>3+</sup> doped fluoride lasers - in TEM<sub>00</sub> mode operation.","PeriodicalId":110592,"journal":{"name":"LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115673385","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 : 2007-11-12DOI: 10.1109/LEOS.2007.4382446
Gun-duk Kim, Sang‐Shin Lee
A photonic microwave channel selective filter was demonstrated adopting a switch based on tunable polymeric ring resonators. The two channels at 10 and 20 GHz were electrically selected with the crosstalk of better than 24 dB.
{"title":"Integrated Photonic Microwave Channel Selective Filter Using a Switch Based on Tunable Ring Resonators","authors":"Gun-duk Kim, Sang‐Shin Lee","doi":"10.1109/LEOS.2007.4382446","DOIUrl":"https://doi.org/10.1109/LEOS.2007.4382446","url":null,"abstract":"A photonic microwave channel selective filter was demonstrated adopting a switch based on tunable polymeric ring resonators. The two channels at 10 and 20 GHz were electrically selected with the crosstalk of better than 24 dB.","PeriodicalId":110592,"journal":{"name":"LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115934967","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 : 2007-11-12DOI: 10.1109/LEOS.2007.4382282
T. Cao-Huu, A. Brownell, G. Lachiver, S. Wong, G. Brownell
Combined fMRI and optical imaging of intrinsic (hemodynamic) signals has been performed in earlier studied simultaneously. Simultaneous measurements showed a general spatial overlap, low TR (2 sec) and a poor spatial resolution (0.5x1 mm in=plane, slice thickness=2mm) from. Good correspondence between BOLD signal and optically measured Hb was also shown in simultaneous fMRI/DOI human studies, albeit on a low-resolution spatial scale inherent to diffuse optical methods. Multiple-wavelength (spectroscopic) optical imaging of the intrinsic signals enable simultaneous measurements of oxyhemoglobin (HbO), deoxyhemoglobin (Hb) and total hemoglobin (HbT). Quantitative estimates of the concentrations of Hb, HbO, and HbT are obtained by fitting the observed signal changes at all wavelengths to a model, taking into account the respective absorption spectra of HbO and Hb.
在早期的研究中，功能磁共振成像和光学成像同时进行了内在(血流动力学)信号。同时测量显示空间重叠，低TR(2秒)和较差的空间分辨率(0.5x1 mm in=平面，切片厚度=2mm)。在同时进行的fMRI/DOI人体研究中，BOLD信号与光学测量的Hb之间也显示出良好的对应关系，尽管是在漫射光学方法固有的低分辨率空间尺度上。本征信号的多波长(光谱)光学成像能够同时测量血红蛋白(HbO)、脱氧血红蛋白(Hb)和总血红蛋白(HbT)。考虑到HbO和Hb各自的吸收光谱，通过将观测到的所有波长的信号变化拟合到模型中，获得了Hb、HbO和HbT浓度的定量估计。
{"title":"fMRI and DOI Non-Rigid Registration with Discrete Curvature Flows and Mutual Information","authors":"T. Cao-Huu, A. Brownell, G. Lachiver, S. Wong, G. Brownell","doi":"10.1109/LEOS.2007.4382282","DOIUrl":"https://doi.org/10.1109/LEOS.2007.4382282","url":null,"abstract":"Combined fMRI and optical imaging of intrinsic (hemodynamic) signals has been performed in earlier studied simultaneously. Simultaneous measurements showed a general spatial overlap, low TR (2 sec) and a poor spatial resolution (0.5x1 mm in=plane, slice thickness=2mm) from. Good correspondence between BOLD signal and optically measured Hb was also shown in simultaneous fMRI/DOI human studies, albeit on a low-resolution spatial scale inherent to diffuse optical methods. Multiple-wavelength (spectroscopic) optical imaging of the intrinsic signals enable simultaneous measurements of oxyhemoglobin (HbO), deoxyhemoglobin (Hb) and total hemoglobin (HbT). Quantitative estimates of the concentrations of Hb, HbO, and HbT are obtained by fitting the observed signal changes at all wavelengths to a model, taking into account the respective absorption spectra of HbO and Hb.","PeriodicalId":110592,"journal":{"name":"LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124316172","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 : 2007-11-12DOI: 10.1109/LEOS.2007.4382262
Hongjun Yang, Li Chen, Zexuan Qiang, Weidong Zhou
Theoretical and experimental research results on the characteristics of photonic crystal quantum dot infrared photodetectors are presented. The surface normal absorption power in a single defect photonic crystal cavity for different absorption values and the absorption enhancement factor for different absorption values in single defect and defect free cavities are investigated. Current-voltage characteristics at different temperatures and the spectral responses of the devices with and without photonic crystal cavities are measured.
{"title":"Characteristics of Photonic Crystal Cavity Based Infrared Photodetectors","authors":"Hongjun Yang, Li Chen, Zexuan Qiang, Weidong Zhou","doi":"10.1109/LEOS.2007.4382262","DOIUrl":"https://doi.org/10.1109/LEOS.2007.4382262","url":null,"abstract":"Theoretical and experimental research results on the characteristics of photonic crystal quantum dot infrared photodetectors are presented. The surface normal absorption power in a single defect photonic crystal cavity for different absorption values and the absorption enhancement factor for different absorption values in single defect and defect free cavities are investigated. Current-voltage characteristics at different temperatures and the spectral responses of the devices with and without photonic crystal cavities are measured.","PeriodicalId":110592,"journal":{"name":"LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124444047","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 : 2007-11-12DOI: 10.1109/LEOS.2007.4382555
Y. Deng, K. Kravtsov, Y. Huang, B. Wu
The near-far effect in a two-user OCDMA network carrying GbE traffic and employing all-optical thresholding is experimentally evaluated. A packet loss of <1.6% is observed with interfering to desired channel power ratio of 1 dB.
{"title":"Experimental Evaluation of Near-Far Effect in Optically-Thresholded OCDMA Network Transporting Gigabit Ethernet Traffic","authors":"Y. Deng, K. Kravtsov, Y. Huang, B. Wu","doi":"10.1109/LEOS.2007.4382555","DOIUrl":"https://doi.org/10.1109/LEOS.2007.4382555","url":null,"abstract":"The near-far effect in a two-user OCDMA network carrying GbE traffic and employing all-optical thresholding is experimentally evaluated. A packet loss of <1.6% is observed with interfering to desired channel power ratio of 1 dB.","PeriodicalId":110592,"journal":{"name":"LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124541443","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 : 2007-11-12DOI: 10.1109/LEOS.2007.4382266
T. Kuri, K. Kitayama
We newly propose a simple wavelength selective switch, which in principle consists of an arrayed waveguide grating and an optical cross-connect switch, and demonstrate the selection performance and error-free transmission of three radio-over-fiber channels.
{"title":"Dense Wavelength Division Multiplexed Radio-over-Fiber Networks with Novel Simple Wavelength Selective Switch Using AWG","authors":"T. Kuri, K. Kitayama","doi":"10.1109/LEOS.2007.4382266","DOIUrl":"https://doi.org/10.1109/LEOS.2007.4382266","url":null,"abstract":"We newly propose a simple wavelength selective switch, which in principle consists of an arrayed waveguide grating and an optical cross-connect switch, and demonstrate the selection performance and error-free transmission of three radio-over-fiber channels.","PeriodicalId":110592,"journal":{"name":"LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114758743","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 : 2007-11-12DOI: 10.1109/LEOS.2007.4382592
J. Stay, M. Filer, S. Tibuleac
An effective genetic algorithm optimization technique is developed to reduce four-wave mixing crosstalk in a DWDM system operating on low-dispersion fiber. Optimization results are presented for different fiber types and channel counts.
{"title":"Genetic Algorithm Optimized Channel Allocation for DWDM Systems","authors":"J. Stay, M. Filer, S. Tibuleac","doi":"10.1109/LEOS.2007.4382592","DOIUrl":"https://doi.org/10.1109/LEOS.2007.4382592","url":null,"abstract":"An effective genetic algorithm optimization technique is developed to reduce four-wave mixing crosstalk in a DWDM system operating on low-dispersion fiber. Optimization results are presented for different fiber types and channel counts.","PeriodicalId":110592,"journal":{"name":"LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114782226","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：