People

Renan Moreira

~ Senior Research Scientist

Renan received his PhD in electrical engineering from UCSB in 2015, his M.S. from UCSB in 2011, and B.S. in electrical engineering from University of Texas at San Antonio in 2008. Renan completed his PhD under the supervision of Professor Daniel Blumenthal where he worked on integrated optical delay line circuits utilizing the world-record ultra-low loss (ULL) waveguide platform. Following graduation, Renan worked at Freedom Photonics as a senior design scientist where he led and managed projects on photonic integrated circuits (PICs) on a variety of integration platforms, including InP, Si, and polymer waveguides. He is now a senior scientist at OCPI where he is looking for novel applications for the ultra-low loss waveguide platform and leads the group’s effort on InP based PICs

rmoreira@ucsb.edu

Qiancheng Zhao

~ Postdoctoral Researcher

Qiancheng received his Ph.D. degree in Electrical and Computer Engineering with a specialization of integrated photonics in University of California, Irvine, USA in 2017. He obtained his B.S. in Optical Engineering from Zhejiang University, China in 2012. He is currently a postdoctoral researcher in Prof. Blumenthal’s group in University of California, Santa Barbara. His research focuses on developing silicon nitride ultra-low-loss waveguides and high-Q resonators for stimulated Brillouin lasers, optical frequency combs, and integrated photonic devices.

qczhao@ucsb.edu

Grant Brodnik

~ Graduate Student Researcher

Grant received his B.S. in Optical Engineering in 2014 from Rose-Hulman Institute of Technology and a dual-degree M.S. at Rose-Hulman and Seoul National University of Science and Technology, conducting research involving high-power diode laser characterization and performance metrics. He is currently pursuing an ECE Ph.D. in the OCPI Group with a focus on system-level integration of Ultra-Low-Loss (ULL) SiN photonic devices, with applications leveraging narrow linewidth and frequency stablized lasers such as coherent communications, optoelectronic oscillators, and integrated optical sensors. In his spare time Grant enjoys pick-up sports, cookouts and bonfires on the beach, and exploring Santa Barbara with friends.

gbrodnik@ucsb.edu

Debapam Bose

~ Graduate Student Researcher

Debapam completed his B.Tech in Electronics and Communications Engineering from the Motilal Nehru National Institute of Technology, Allahabad in India, in 2016 and joined the OCPI group in December 2016. He is currently working towards integrating various ultra-low-loss photonic devices that have, to-date, required independent wafer processing, onto a single fully integrated SiN chip as well as further lowering the loss of silicon nitride waveguides.

dbose@umail.ucsb.edu

Nitesh Chauhan

~ Graduate Student Researcher

Nitesh received his Bachelors in Electrical Engineering from the Indian Institute of Technology, Indore in 2016. He joined UCSB to pursue his Masters in Fall 2016 and joined the OCPI group in December 2016. He is currently studying topological behavior of light and its applications. During his free time he likes biking, trekking, and photography.

niteshchauhan@umail.ucsb.edu

Jiawei Wang

~ Graduate Student Researcher

Jiawei received his B.Eng. in Electronic Science and Technology from Huazhong University of Science and Technology, Wuhan, China, in 2015 and his M.S. in Electrical Engineering at UCLA in 2017. He is currently working towards his Ph.D. in ECE at UCSB, with research interest in silicon nitride photonics device design and processing, including his current project on non-magnetic Si3N4 isolators with piezo tuning.

jiawei_wang@ucsb.edu

Mark Harrington

~ Graduate Student Researcher

Mark received his B.S. in Electrical Engineering at UC Santa Cruz in 2017. He is currently pursuing a Ph.D. in Electrical and Computer Engineering at UCSB, and is interested in photonics systems engineering. Outside of research, Mark enjoys board games, soccer, and hiking.

mwh@ucsb.edu

Michael Choquer

~ Graduate Student Researcher

Michael received his Bachelor of Science in Electrical Engineering in 2018 from University of Washington Seattle and joined OCPI September 2018. His research interests include photonic device processing and characterization. His current projects use OCPI's ultra-low-loss silicon nitride platform for integrated optical quantum computing networks and handheld-sized miniature atomic clocks. Outside of lab, Michael enjoys triathlon, salsa dancing, and nature photography.

michaelchoquer@ucsb.edu