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A list of all the posts and pages found on the site. For you robots out there is an XML version available for digesting as well.
Pages
About me
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Posts
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Blog Post number 1
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portfolio
Ultrafast avalanche photodetectors for imaging and ranging
Improving the time resolution and sensitivity of Avalanche Photodetectors (APDs-SPADs) is critical for increasing the resolution of Time-of-Flight imaging systems, optical communications, and fluorescence-based biosensors. My research is focused in enhancing the bandwidth, gain and detection efficiency of such detectors by controlling the depth of light absorption, delivering the light in critical regions of the semiconductor. This can be achieved by the implementation of novel photon trapping structures, that has been extensively studied in our lab and implemented in Silicon, Ge-on-Si and III-V photodetectors. 1
Silicon and Ge-on-Silicon PIN photodetectors for optical communications
We aim to enable monolithic integration of silicon photodiodes with the high-speed and responsivity with the receiver electronics in order to reduce the cost and improve the performance of short reach optical interconnects in data centers. In addition, we are developing highly sensitive Germanium on Silicon photodiodes. These photodiodes have potential for many applications, such as inter-/intra-datacenters, passive optical networks, metro and long-haul dense wavelength division multiplexing systems, eye-safe lidar systems, and quantum communications. 
Photonic Integrated Biosensors
Silicon photonics allow the integration of ultra-sensitive biosensors in small, portable chips. I am collaborating the fabrication of photonic integrated molecular biosensor in a Silicon Nitride platform. The project involves the design of waveguides, splitters, MZI and ring resonators in a device and a system level. Such work is done in collaboration with the department of Chemical Engineering. 
publications
High speed surface illuminated Si photodiode using microstructured holes for absorption enhancements at 900-1000 nm wavelength
Published in ACS Photonics, 2017
Recommended citation: Y. Gao et al., "High Speed Surface Illuminated Si Photodiode Using Microstructured Holes for Absorption Enhancements at 900-1000 nm Wavelength," ACS Photonics, vol. 4, no. 8, pp. 2053-2060, 2017. http://cesarbartolo.github.io/files/sipd_acs.pdf
A new paradigm in high-speed and high-efficiency silicon photodiodes for communication-Part II: device and VLSI integration challenges for low-dimensional structures
Published in IEEE Transactions on Electron Devices, 2017
Recommended citation: H. Cansizoglu et al., "A New Paradigm in High-Speed and High-Efficiency Silicon Photodiodes for Communication-Part II: Device and VLSI Integration Challenges for Low-Dimensional Structures," IEEE Transactions on Electron Devices, vol. 65, no. 2, pp. 382-391, 2018. http://cesarbartolo.github.io/files/new_paradigm.pdf
Surface-illuminated photon-trapping high-speed Ge-on-Si photodiodes with improved efficiency up to 1700nm
Published in Photonics Research, 2018
Recommended citation: H. Cansizoglu et al., "Surface-illuminated photon-trapping high-speed Ge-on-Si photodiodes with improved efficiency up to 1700nm," Photonics Research, vol. 6, no. 7, p. 734, 2018. http://cesarbartolo.github.io/files/geonsi.pdf
High-Speed High-Efficiency Photon-Trapping Broadband Silicon PIN Photodiodes for Short-Reach Optical Interconnects in Data Centers
Published in Journal of Lightwave Technology, 2019
Recommended citation: S. Ghandiparsi et al., "High-Speed High-Efficiency Photon-Trapping Broadband Silicon PIN Photodiodes for Short-Reach Optical Interconnects in Data Centers," Journal of Lightwave Technology, vol. 37, no. 23, pp. 5748-5755, 2019. http://cesarbartolo.github.io/files/ligthwave_technology.pdf
Rigorous coupled-wave analysis of absorption enhancement in vertically illuminated silicon photodiodes with photon-trapping hole arrays
Published in Nanophotonics, 2019
Recommended citation: G. Jun et al., "Rigorous coupled-wave analysis of absorption enhancement in vertically illuminated silicon photodiodes with photon-trapping hole arrays," (in English), Nanophotonics, vol. 8, no. 10, pp. 1747-1756, 2019. http://cesarbartolo.github.io/files/rcwa.pdf
Dramatically Enhanced Efficiency in Ultra-Fast Silicon MSM Photodiodes Via Light Trapping Structures
Published in IEEE Photonics Technology Letters, 2019
Recommended citation: H. Cansizoglu et al., "Dramatically Enhanced Efficiency in Ultra-Fast Silicon MSM Photodiodes Via Light Trapping Structures," IEEE Photonics Technology Letters, vol. 31, no. 20, pp. 1619-1622, 2019. http://cesarbartolo.github.io/files/dramatically_enhanced.pdf
Maximizing Absorption in Photon-Trapping Ultrafast Silicon Photodetectors
Published in Advanced Photonics Research, 2021
Recommended citation: C. Bartolo-Perez et al., "Maximizing Absorption in Photon-Trapping Ultrafast Silicon Photodetectors," Advanced Photonics Research n/a, 2000190. http://cesarbartolo.github.io/files/maximizing_absorption_speed.pdf
Single Microhole per Pixel in CMOS Image Sensors With Enhanced Optical Sensitivity in Near-Infrared
Published in IEEE Sensors, 2021
Recommended citation: E. P. Devine et al., "Single Microhole per Pixel in CMOS Image Sensors With Enhanced Optical Sensitivity in Near-Infrared," IEEE Sensors Journal 21, 10556-10562 (2021). http://cesarbartolo.github.io/files/sensors_microhole.pdf
Avalanche photodetectors with photon trapping structures for biomedical imaging applications
Published in Optics Express, 2021
Recommended citation: Cesar Bartolo-Perez, Soroush Chandiparsi, Ahmed S. Mayet, Hilal Cansizoglu, Yang Gao, Wayesh Qarony, Ahasan AhAmed, Shih-Yuan Wang, Simon R. Cherry, M. Saif Islam, and Gerard Arino-Estrada, "Avalanche photodetectors with photon trapping structures for biomedical imaging applications," Opt. Express 29, 19024-19033 (2021) http://cesarbartolo.github.io/files/avalanche-biomedical.pdf
Engineering the gain and bandwidth in avalanche photodetectors
Published in Optics Express, 2022
Recommended citation: Cesar Bartolo-Perez, Ahasan Ahamed, Ahmed S. Mayet, Amita Rawat, Lisa McPhillips, Soroush Ghandiparsi, Julien Bec, Gerard Arino-Estrada, Simon Cherry, Shih-Yuan Wang, Laura Marcu, and M. Saif Islam, "Engineering the gain and bandwidth in avalanche photodetectors," Opt. Express 30, 16873-16882 (2022) http://cesarbartolo.github.io/files/engineering-penetrationdepth.pdf
talks
Talk 1 on Relevant Topic in Your Field
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Conference Proceeding talk 3 on Relevant Topic in Your Field
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teaching
Teaching experience 1
Undergraduate course, University 1, Department, 2014
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Teaching experience 2
Workshop, University 1, Department, 2015
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