H. Ding, D. Grobnic, C. Hnatovsky, P. Lu, R. Walker, S. Mihailov
The graded-index fiber lens was used to couple probe light into the multimode sapphire fiber containing a Bragg grating (SFBG). It improved the spectral resolution of the SFBG and facilitated the packaging of the SFBG as a fiber sensor for applications in high temperature environments.
{"title":"Sapphire fiber Bragg grating coupled with graded-index fiber lens","authors":"H. Ding, D. Grobnic, C. Hnatovsky, P. Lu, R. Walker, S. Mihailov","doi":"10.1109/PN.2019.8819550","DOIUrl":"https://doi.org/10.1109/PN.2019.8819550","url":null,"abstract":"The graded-index fiber lens was used to couple probe light into the multimode sapphire fiber containing a Bragg grating (SFBG). It improved the spectral resolution of the SFBG and facilitated the packaging of the SFBG as a fiber sensor for applications in high temperature environments.","PeriodicalId":448071,"journal":{"name":"2019 Photonics North (PN)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124372489","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}
Benjamin Crockett, L. R. Cortés, S. R. Konatham, J. Azaa
We achieve in-band noise mitigation of isolated waveforms through simultaneous noiseless amplification and sampling in the spectral domain by linear phase-only manipulations derived from the Talbot Effect.
{"title":"On-the-fly Spectral Noise Mitigation through Passive Amplification and Sampling","authors":"Benjamin Crockett, L. R. Cortés, S. R. Konatham, J. Azaa","doi":"10.1109/pn.2019.8819507","DOIUrl":"https://doi.org/10.1109/pn.2019.8819507","url":null,"abstract":"We achieve in-band noise mitigation of isolated waveforms through simultaneous noiseless amplification and sampling in the spectral domain by linear phase-only manipulations derived from the Talbot Effect.","PeriodicalId":448071,"journal":{"name":"2019 Photonics North (PN)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126919277","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 demonstrate the scaling up of highly efficient and photo-chemically stable wafer-level nanowire photocatalysts, comprising of GaN-alloys on Si substrate, for unassisted overall neutral pH $( sim 7.0)$ water splitting under concentrated sunlight.
{"title":"Unassisted Artificial Photosynthesis using GaN-alloys Scaling up Ga(In)N Nanowire Synthesis for Large-scale Water Splitting under Real Sunlight","authors":"N. H. Tran, F. Chowdhury, Z. Mi","doi":"10.1109/PN.2019.8819572","DOIUrl":"https://doi.org/10.1109/PN.2019.8819572","url":null,"abstract":"We demonstrate the scaling up of highly efficient and photo-chemically stable wafer-level nanowire photocatalysts, comprising of GaN-alloys on Si substrate, for unassisted overall neutral pH $( sim 7.0)$ water splitting under concentrated sunlight.","PeriodicalId":448071,"journal":{"name":"2019 Photonics North (PN)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129449386","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}
High power continuous-wave operation of a diode-pumped Yb:YAP laser was demonstrated. The laser generated $>7mathrm {W}$ of output power with 22 W of pump power with the slope efficiency of around 70% while maintaining high beam quality. The combination of high thermal conductivity and broad gain bandwidth makes this laser host an attractive candidate for high power CW and ultrashort pulse generation.
演示了二极管泵浦Yb:YAP激光器的高功率连续波工作。激光器以22w的泵浦功率产生了>7 μ m {W}$的输出功率，斜率效率在70%左右，同时保持了较高的光束质量。高导热性和宽增益带宽的结合使这种激光主机成为高功率连续波和超短脉冲产生的有吸引力的候选者。
{"title":"Diode-pumped continuous-wave Yb:YAP laser","authors":"R. Akbari, J. Xu, X. Xu, A. Major","doi":"10.1109/PN.2019.8819535","DOIUrl":"https://doi.org/10.1109/PN.2019.8819535","url":null,"abstract":"High power continuous-wave operation of a diode-pumped Yb:YAP laser was demonstrated. The laser generated $>7mathrm {W}$ of output power with 22 W of pump power with the slope efficiency of around 70% while maintaining high beam quality. The combination of high thermal conductivity and broad gain bandwidth makes this laser host an attractive candidate for high power CW and ultrashort pulse generation.","PeriodicalId":448071,"journal":{"name":"2019 Photonics North (PN)","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132683420","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}
K. M. Aghdami, Erden Ertorer, Abdullah Rahnama, P. Herman
Femtosecond laser irradiation followed by chemical etching (FLICE) was applied to standard telecommunication fiber, embedding an open-filament, grating array through the silica cladding and guiding core cross-section. Second and third order Bragg air-gratings are presented for the first time, providing nano-fluidic channels accessible to the outer cladding surface. Pishifted fiber Bragg grating responses to chemical etching were used to optimize a novel refractive index sensor for fluids.
{"title":"Femtosecond Laser Opening of Hollow-Filament Arrays: the Fiber Bragg Grating Opto-fluidic Sensor","authors":"K. M. Aghdami, Erden Ertorer, Abdullah Rahnama, P. Herman","doi":"10.1109/PN.2019.8819553","DOIUrl":"https://doi.org/10.1109/PN.2019.8819553","url":null,"abstract":"Femtosecond laser irradiation followed by chemical etching (FLICE) was applied to standard telecommunication fiber, embedding an open-filament, grating array through the silica cladding and guiding core cross-section. Second and third order Bragg air-gratings are presented for the first time, providing nano-fluidic channels accessible to the outer cladding surface. Pishifted fiber Bragg grating responses to chemical etching were used to optimize a novel refractive index sensor for fluids.","PeriodicalId":448071,"journal":{"name":"2019 Photonics North (PN)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131714993","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}
Nurmemet Abdukerim, C. Hnatovsky, D. Grobnic, S. Mihailov
Tilted fiber Bragg gratings are inscribed in nonphotosensitized single mode fibers through the polyimide coating using a femtosecond infrared laser and a phase mask, by translating the focusing lens and the fiber in orthogonal directions.
{"title":"Femtosecond Writing of Tilted Fiber Bragg Gratings Through the Coating with a Phase Mask","authors":"Nurmemet Abdukerim, C. Hnatovsky, D. Grobnic, S. Mihailov","doi":"10.1109/PN.2019.8819595","DOIUrl":"https://doi.org/10.1109/PN.2019.8819595","url":null,"abstract":"Tilted fiber Bragg gratings are inscribed in nonphotosensitized single mode fibers through the polyimide coating using a femtosecond infrared laser and a phase mask, by translating the focusing lens and the fiber in orthogonal directions.","PeriodicalId":448071,"journal":{"name":"2019 Photonics North (PN)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131958544","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}
K. Zeb, Z. Lu, J. Liu, Philip J. Poole, Mohamed Rahim, G. Pakulski, Y. Mao, C. Song, Xiupu Zhang
To support the multi-gigabit/s wireless connectivity in the future wireless access networks, photonic millimeter-wave-over fiber (MMWoF) technologies are of great interest owing to their high bandwidth, high energy efficiency, low complexity and small footprint. In this paper, we experimentally demonstrate a 1 Gbaud four-level pulse amplitude modulation (PAM4) photonic MMWoF system at 47.2 GHz based on a novel dual-wavelength quantum-dash (QD) DFB laser and optical heterodyning.
{"title":"Experimental Demonstration of Photonic MMW-over Fiber System for Next Generation Access Networks","authors":"K. Zeb, Z. Lu, J. Liu, Philip J. Poole, Mohamed Rahim, G. Pakulski, Y. Mao, C. Song, Xiupu Zhang","doi":"10.1109/PN.2019.8819583","DOIUrl":"https://doi.org/10.1109/PN.2019.8819583","url":null,"abstract":"To support the multi-gigabit/s wireless connectivity in the future wireless access networks, photonic millimeter-wave-over fiber (MMWoF) technologies are of great interest owing to their high bandwidth, high energy efficiency, low complexity and small footprint. In this paper, we experimentally demonstrate a 1 Gbaud four-level pulse amplitude modulation (PAM4) photonic MMWoF system at 47.2 GHz based on a novel dual-wavelength quantum-dash (QD) DFB laser and optical heterodyning.","PeriodicalId":448071,"journal":{"name":"2019 Photonics North (PN)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126632475","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 present recent theoretical and experimental developments in the research of novel optical fibers tailored for the guided transmission of OAM and cylindrical vector beams.
我们介绍了用于OAM和圆柱矢量光束的定向传输的新型光纤研究的最新理论和实验进展。
{"title":"Recent Progress in Specialty Optical Fibers for Guiding of OAM and Cylindrical Vector Beams","authors":"B. Ung","doi":"10.1109/PN.2019.8819580","DOIUrl":"https://doi.org/10.1109/PN.2019.8819580","url":null,"abstract":"We present recent theoretical and experimental developments in the research of novel optical fibers tailored for the guided transmission of OAM and cylindrical vector beams.","PeriodicalId":448071,"journal":{"name":"2019 Photonics North (PN)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130950336","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}
Nurmemet Abdukerim, C. Hnatovsky, D. Grobnic, R. Lausten, Stephen Mihailovt
The combined effect of chromatic dispersion and conical diffraction in femtosecond laser writing using the phase mask technique is characterized by measuring the axial intensity distribution. Optimum writing distance from the phase mask is experimentally determined.
{"title":"Effect of Aberrations in Femtosecond Laser Writing Using the Phase Mask Technique","authors":"Nurmemet Abdukerim, C. Hnatovsky, D. Grobnic, R. Lausten, Stephen Mihailovt","doi":"10.1109/PN.2019.8819556","DOIUrl":"https://doi.org/10.1109/PN.2019.8819556","url":null,"abstract":"The combined effect of chromatic dispersion and conical diffraction in femtosecond laser writing using the phase mask technique is characterized by measuring the axial intensity distribution. Optimum writing distance from the phase mask is experimentally determined.","PeriodicalId":448071,"journal":{"name":"2019 Photonics North (PN)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122176460","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}
M. Vivanco, G. Garcia, R. Doti, J. Faubert, J. E. Lugo
In this work, we have followed ethanol evaporation at two different concentrations (70% and 35%) using a fiber optic spectrometer and a screen capture application with a resolving capacity of 10 ms. Porous Silicon microcavities were fabricated by electrochemistry etching of crystalline silicon. The microcavities were designed to have a localized mode at 472 nm (blue band) and an extended mode at 750 nm (red band). Ethanol infiltration produces a redshift of approximately 17 nm. After a few minutes, a phase change from liquid to vapor occurs, and both modes shift back to the blue band. This process happens in a time window of only 60 ms.
{"title":"Time-Resolved Spectroscopy of Ethanol Evaporation on Free-Standing Porous Silicon Photonic Microcavities","authors":"M. Vivanco, G. Garcia, R. Doti, J. Faubert, J. E. Lugo","doi":"10.1109/PN.2019.8819546","DOIUrl":"https://doi.org/10.1109/PN.2019.8819546","url":null,"abstract":"In this work, we have followed ethanol evaporation at two different concentrations (70% and 35%) using a fiber optic spectrometer and a screen capture application with a resolving capacity of 10 ms. Porous Silicon microcavities were fabricated by electrochemistry etching of crystalline silicon. The microcavities were designed to have a localized mode at 472 nm (blue band) and an extended mode at 750 nm (red band). Ethanol infiltration produces a redshift of approximately 17 nm. After a few minutes, a phase change from liquid to vapor occurs, and both modes shift back to the blue band. This process happens in a time window of only 60 ms.","PeriodicalId":448071,"journal":{"name":"2019 Photonics North (PN)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123877845","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：