Pub Date : 2012-12-01DOI: 10.1109/PGC.2012.6457990
F. Sun, N. Duan, G. Lo
A new structure of silicon photomultiplier (SiPM) is presented, where lateral bulk-Si resistors was introduced to replace the conventional poly-Si quenching resistors. The replacement can not only eliminate the poly-Si related fabrication process, but also greatly reduce the area of metal wires. Thus the fill factor of the device can be increased noticeably. Furthermore, due to the separation of the contact region and the active region, the quantum efficiency of the device can also be improved, especially for light with visible or ultraviolet wavelengths. The functionality of the device proposed and its performance improvements have been confirmed by numerical simulation. The quantum efficiency at 300nm wavelength increases from 20% to 86%. Therefore, SiPM devices with very high photon detection efficiency will be very likely to be achieved.
{"title":"Silicon photomultiplier with lateral Bulk-Si quenching resistors","authors":"F. Sun, N. Duan, G. Lo","doi":"10.1109/PGC.2012.6457990","DOIUrl":"https://doi.org/10.1109/PGC.2012.6457990","url":null,"abstract":"A new structure of silicon photomultiplier (SiPM) is presented, where lateral bulk-Si resistors was introduced to replace the conventional poly-Si quenching resistors. The replacement can not only eliminate the poly-Si related fabrication process, but also greatly reduce the area of metal wires. Thus the fill factor of the device can be increased noticeably. Furthermore, due to the separation of the contact region and the active region, the quantum efficiency of the device can also be improved, especially for light with visible or ultraviolet wavelengths. The functionality of the device proposed and its performance improvements have been confirmed by numerical simulation. The quantum efficiency at 300nm wavelength increases from 20% to 86%. Therefore, SiPM devices with very high photon detection efficiency will be very likely to be achieved.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123925349","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 : 2012-12-01DOI: 10.1109/PGC.2012.6458039
C. Boonsri, S. Sumriddetchkajorn, P. Buranasiri
This article proposes and shows that a low-optical-power laser when arranged in a zigzag fashion in a free space can create strong air thermal stress and form a chemical-free optical net that is capable of repelling adult mosquitoes away. Experimental proof of concept using a pointer-like diode-pump solid-state laser (447 nm wavelength and 500 mW maximum) and reflective sheets shows that all 80 adult Aedes albopictus mosquitoes are completely trapped inside the open glass chamber. Most of the adult mosquitoes prefer to stay near the bottom of the open glass chamber as it is cooler than the top part that contains several zigzagging laser beams. Reducing air thermal stress via increasing the spacing between the two adjacent laser beams allows the adult mosquitoes to easily escape out of the zone of the laser beams.
{"title":"Laser-based mosquito repelling module","authors":"C. Boonsri, S. Sumriddetchkajorn, P. Buranasiri","doi":"10.1109/PGC.2012.6458039","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458039","url":null,"abstract":"This article proposes and shows that a low-optical-power laser when arranged in a zigzag fashion in a free space can create strong air thermal stress and form a chemical-free optical net that is capable of repelling adult mosquitoes away. Experimental proof of concept using a pointer-like diode-pump solid-state laser (447 nm wavelength and 500 mW maximum) and reflective sheets shows that all 80 adult Aedes albopictus mosquitoes are completely trapped inside the open glass chamber. Most of the adult mosquitoes prefer to stay near the bottom of the open glass chamber as it is cooler than the top part that contains several zigzagging laser beams. Reducing air thermal stress via increasing the spacing between the two adjacent laser beams allows the adult mosquitoes to easily escape out of the zone of the laser beams.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128016505","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 : 2012-12-01DOI: 10.1109/PGC.2012.6458063
K. Abedi, P. Ghasemi
In this paper, a new tunable photonic crystal electro-optic device is proposed and analyzed. In the proposed device, each period (or unit cell) of the photonic crystal lattice is composed of three different materials as ABAB'A in which A, B and B' layers are materials such as GaAs, LiNbO3 and KH2PO4, respectively. The refraction indices of the B and B' layers are changed by applying voltage. We employ the transfer matrix approach to obtain the transmittance of the photonic crystal device, and transmission spectra are drawn for a different number of unit cells N = 10, 20 with consideration of TE and TM modes. We observe from these transmission spectra that the band width at the high frequencies region is broadened by means of an increase in applied voltage.
{"title":"A new tunable photonic crystal electro-optic device","authors":"K. Abedi, P. Ghasemi","doi":"10.1109/PGC.2012.6458063","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458063","url":null,"abstract":"In this paper, a new tunable photonic crystal electro-optic device is proposed and analyzed. In the proposed device, each period (or unit cell) of the photonic crystal lattice is composed of three different materials as ABAB'A in which A, B and B' layers are materials such as GaAs, LiNbO3 and KH2PO4, respectively. The refraction indices of the B and B' layers are changed by applying voltage. We employ the transfer matrix approach to obtain the transmittance of the photonic crystal device, and transmission spectra are drawn for a different number of unit cells N = 10, 20 with consideration of TE and TM modes. We observe from these transmission spectra that the band width at the high frequencies region is broadened by means of an increase in applied voltage.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121311248","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 : 2012-12-01DOI: 10.1109/PGC.2012.6458065
Liu Bo, Kou-Chen Liu, Huang-Qi Xiao, Cheng-Han Wu, Chao-Sung Lai
In order to enhance efficiency of organic lighting emission diodes(OLED), we introduce metal nanoparticles into our device, which use the localized surface plasmon resonance(LSPR) to increase local electric field to promote luminescence. It is found that the luminance intensity enhance markedly if the absorption spectrum of nano metal particles matches the emission light spectrum.
{"title":"Gold nanoparticles enhanced fluorescence in organic lighting emission diodes","authors":"Liu Bo, Kou-Chen Liu, Huang-Qi Xiao, Cheng-Han Wu, Chao-Sung Lai","doi":"10.1109/PGC.2012.6458065","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458065","url":null,"abstract":"In order to enhance efficiency of organic lighting emission diodes(OLED), we introduce metal nanoparticles into our device, which use the localized surface plasmon resonance(LSPR) to increase local electric field to promote luminescence. It is found that the luminance intensity enhance markedly if the absorption spectrum of nano metal particles matches the emission light spectrum.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117086630","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 : 2012-12-01DOI: 10.1109/PGC.2012.6458090
Mu Xu, Jiayang Wu, Zhiming Zhuang, Fei Li, Tao Wang, Linjie Zhou, Yikai Su
We propose a racetrack ring based optical modulator employing an electro-optic polymer infiltrated silicon-plasmonic hybrid phase shifter. From simulation results, an extinction ratio of higher than 15 dB is achieved at 1550-nm wavelength under a 1.2-V bias. A modulation bandwidth of more than 100 GHz can be potentially obtained due to a fast response speed of the Pockels effect, a reduced RC delay, and a decreased quality factor of the ring.
{"title":"Design of a silicon-plasmonic hybrid electro-optic modulator","authors":"Mu Xu, Jiayang Wu, Zhiming Zhuang, Fei Li, Tao Wang, Linjie Zhou, Yikai Su","doi":"10.1109/PGC.2012.6458090","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458090","url":null,"abstract":"We propose a racetrack ring based optical modulator employing an electro-optic polymer infiltrated silicon-plasmonic hybrid phase shifter. From simulation results, an extinction ratio of higher than 15 dB is achieved at 1550-nm wavelength under a 1.2-V bias. A modulation bandwidth of more than 100 GHz can be potentially obtained due to a fast response speed of the Pockels effect, a reduced RC delay, and a decreased quality factor of the ring.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114393603","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 : 2012-12-01DOI: 10.1109/PGC.2012.6457972
X. Tu, Junfeng Song, Xianshu Luo, T. Liow, Mingbin Yu, G. Lo
Si3N4 strip and slot waveguide passive devices platform are demonstrated based on standard CMOS process including athermal MZI filter, multi-channel ring filter, two-ring EIT and AWG. The loss of Si3N4 strip waveguide is 0.6dB/cm for TE mode and 0.66dB/cm for TM mode. A 20-channel micro-ring filter with 25GHz channel spacing is realized with 15dB cross-talk on this Si3N4 platform. Thermal tuning EIT is demonstrated with two-ring filter structure with heater on one of the ring resonator. A 16-channel AWG is realized with a 100GHz channel spacing and 15 dB extinction ratio.
{"title":"High performance Si3N4 waveguide devices platform","authors":"X. Tu, Junfeng Song, Xianshu Luo, T. Liow, Mingbin Yu, G. Lo","doi":"10.1109/PGC.2012.6457972","DOIUrl":"https://doi.org/10.1109/PGC.2012.6457972","url":null,"abstract":"Si<sub>3</sub>N<sub>4</sub> strip and slot waveguide passive devices platform are demonstrated based on standard CMOS process including athermal MZI filter, multi-channel ring filter, two-ring EIT and AWG. The loss of Si<sub>3</sub>N<sub>4</sub> strip waveguide is 0.6dB/cm for TE mode and 0.66dB/cm for TM mode. A 20-channel micro-ring filter with 25GHz channel spacing is realized with 15dB cross-talk on this Si<sub>3</sub>N<sub>4</sub> platform. Thermal tuning EIT is demonstrated with two-ring filter structure with heater on one of the ring resonator. A 16-channel AWG is realized with a 100GHz channel spacing and 15 dB extinction ratio.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115165616","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 : 2012-12-01DOI: 10.1109/PGC.2012.6458099
R. Dasgupta, S. Ahlawat, P. Gupta, J. Xavier, J. Joseph
High numerical aperture (NA) objective lenses used in optical tweezers typically limit the axial working range below 100 μm and since these lenses have magnification at the higher end (typically 100X) offer a narrow field of view resulting studies possible only over a small sample volume. Therefore, the light gradient field of phase engineered multiple plane wave three dimensional interference patterns generated at the focal plane of a low NA objective lens was used to stably trap particles in three dimensions. By employing a spatial light modulator to phase engineer the interfering plane waves the approach could be used to generate single or multiple trap points. Objective lens with NA 0.55, working distance as long as ~ 9 mm and magnification of 50x could be used to optically trap objects allowing for manipulation as well as imaging over a large sample volume using this technique.
{"title":"Optical trapping with low numerical aperture objective lens","authors":"R. Dasgupta, S. Ahlawat, P. Gupta, J. Xavier, J. Joseph","doi":"10.1109/PGC.2012.6458099","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458099","url":null,"abstract":"High numerical aperture (NA) objective lenses used in optical tweezers typically limit the axial working range below 100 μm and since these lenses have magnification at the higher end (typically 100X) offer a narrow field of view resulting studies possible only over a small sample volume. Therefore, the light gradient field of phase engineered multiple plane wave three dimensional interference patterns generated at the focal plane of a low NA objective lens was used to stably trap particles in three dimensions. By employing a spatial light modulator to phase engineer the interfering plane waves the approach could be used to generate single or multiple trap points. Objective lens with NA 0.55, working distance as long as ~ 9 mm and magnification of 50x could be used to optically trap objects allowing for manipulation as well as imaging over a large sample volume using this technique.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114612534","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 : 2012-12-01DOI: 10.1109/PGC.2012.6457953
Xianshu Luo, Junfeng Song, Q. Fang, X. Tu, T. Liow, Mingbin Yu, G. Lo
We demonstrate a multiple-channel optical receiver integrating multiple thermally tunable microring resonator as the WDM demultiplexing and Ge photodetector for light detection. We fabricated 4-channel and 10-channel of such WDM receivers using CMOS-compatible fabrication process. We show that with the thermal tunability, the channel wavelengths can be adjusted to align with the selected channel grid. Proof-of-principle demonstrations using 4-channel receiver shows up to 160 Gbit/s date transmissions with high data quality.
{"title":"Thermal-tunable microring resonator-based WDM optical receiver for on-chip optical interconnect","authors":"Xianshu Luo, Junfeng Song, Q. Fang, X. Tu, T. Liow, Mingbin Yu, G. Lo","doi":"10.1109/PGC.2012.6457953","DOIUrl":"https://doi.org/10.1109/PGC.2012.6457953","url":null,"abstract":"We demonstrate a multiple-channel optical receiver integrating multiple thermally tunable microring resonator as the WDM demultiplexing and Ge photodetector for light detection. We fabricated 4-channel and 10-channel of such WDM receivers using CMOS-compatible fabrication process. We show that with the thermal tunability, the channel wavelengths can be adjusted to align with the selected channel grid. Proof-of-principle demonstrations using 4-channel receiver shows up to 160 Gbit/s date transmissions with high data quality.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114898642","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 : 2012-12-01DOI: 10.1109/PGC.2012.6458000
Deng Jun, Jia Wei, V. Kumar, C. Png, A. Bettiol, A. Danner
Photonic crystals realized in LiNbO3 have a great potential to reduce the size and increase the functionality of integrated optical devices. In order to accomplish these aims, fabrication know-how must be mastered yet it remains relatively uncharted. In this work we report the fabrication and optical characterization of photonic crystal structures in annealed proton exchanged (APE) LiNbO3 waveguides. In our work, channel waveguides were fabricated by photolithography patterning followed by immersing LiNbO3 wafers in molten benzoic acid at 235°C for 5 h. The thickness and the composition profiles of the APE waveguides were measured using the secondary ion mass spectroscopy (SIMS) method. The experimental characterization of the photonic crystal waveguides was performed and a photonic stop band with good sharpness can be observed from the transmission spectra.
{"title":"Photonic crystals in proton-exchanged LiNbO3 waveguides for photonic applications","authors":"Deng Jun, Jia Wei, V. Kumar, C. Png, A. Bettiol, A. Danner","doi":"10.1109/PGC.2012.6458000","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458000","url":null,"abstract":"Photonic crystals realized in LiNbO3 have a great potential to reduce the size and increase the functionality of integrated optical devices. In order to accomplish these aims, fabrication know-how must be mastered yet it remains relatively uncharted. In this work we report the fabrication and optical characterization of photonic crystal structures in annealed proton exchanged (APE) LiNbO3 waveguides. In our work, channel waveguides were fabricated by photolithography patterning followed by immersing LiNbO3 wafers in molten benzoic acid at 235°C for 5 h. The thickness and the composition profiles of the APE waveguides were measured using the secondary ion mass spectroscopy (SIMS) method. The experimental characterization of the photonic crystal waveguides was performed and a photonic stop band with good sharpness can be observed from the transmission spectra.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125358072","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 : 2012-12-01DOI: 10.1109/PGC.2012.6458032
Yangjié Liu, R. Ang
Čerenkov radiation has hinted people to unfold energy transfer from kinetic energy of moving electrons to electromagnetic waves, evanescent or traveling. However, such dissipative motion-induced radiations require particles to move faster than light in medium or to encounter velocity transition to pump energy. An emergent Transformation Optics strategy provides possibility to manipulate light flow almost arbitrarily. Therefore such a curved electromagnetic space becomes an energy-pumping candidate from motion-induced radiation of particles. Inspired by a method to detect cloak by observing radiation of a fast-moving electron bunch going through it by Zhang et al., we attempt to derive another transition radiation of moving electron bunch going through a differently curved geometry of light: Maxwell's fish-eye, which in principle provides unlimited resolution as a perfect imaging lens. Our calculation may pave the way to investigate new scheme of transferring energy from electron to radiation.
{"title":"Analysis of motion-induced radiation of charged particles","authors":"Yangjié Liu, R. Ang","doi":"10.1109/PGC.2012.6458032","DOIUrl":"https://doi.org/10.1109/PGC.2012.6458032","url":null,"abstract":"Čerenkov radiation has hinted people to unfold energy transfer from kinetic energy of moving electrons to electromagnetic waves, evanescent or traveling. However, such dissipative motion-induced radiations require particles to move faster than light in medium or to encounter velocity transition to pump energy. An emergent Transformation Optics strategy provides possibility to manipulate light flow almost arbitrarily. Therefore such a curved electromagnetic space becomes an energy-pumping candidate from motion-induced radiation of particles. Inspired by a method to detect cloak by observing radiation of a fast-moving electron bunch going through it by Zhang et al., we attempt to derive another transition radiation of moving electron bunch going through a differently curved geometry of light: Maxwell's fish-eye, which in principle provides unlimited resolution as a perfect imaging lens. Our calculation may pave the way to investigate new scheme of transferring energy from electron to radiation.","PeriodicalId":158783,"journal":{"name":"2012 Photonics Global Conference (PGC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125735339","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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