Joshua Lederman Email & Phone Number

Princeton, Nj, Us

Princeton, Nj, Us

Princeton, Nj, Us

The Lightwave Lab develops wavelength-division multiplexed integrated analog silicon photonic systems. • Demonstrated a FPGA/photonic RF blind interference cancellation system that performs real-time weight identification with 2 GS/s throughput and 4 ms update latency (published in Nature Communications) • Invented MRR thermal stabilization technique that halves thermal crosstalk using optical self-heating • Demonstrated reconfigurable multi-layer feedforward photonic neural network • Led layout of 24 μm2 silicon multi-project wafer design with 19 photonic systems contributed by researchers across three universitities • Wrote Python SCPI drivers to interface over Ethernet, USB, and GPIB with lab instrumentation equipment, enabling extensive automated experimental data collection (see https://github.com/lightwave-lab/lightlab) • Designed, assembled, installed, and administered a high-performance AlmaLinux (CentOS) multi-CPU laboratory server optimized for virtualization, optical simulation, and redundant data storage • Trained several new lab members and mentored a half-dozen undergraduate and first-year graduate students through semester- or year-long research projects • Served as teaching assistant over four semesters, mentoring students, running laboratories, and grading assignments • Wrote journal and conference papers and presented at multiple research conferences • Contributed to proposals responding to solicitations from NASA, NAVAIR, ONR, NSF, and DARPA, two successful, and acted as a major performer for four funded projects from these agencies

The Jena-Xing group develops electrical devices such as ultraviolet LEDs on III-nitride and other semiconducting substrates.• Developed III-nitride LED light-extraction simulation enabling determination of internal bandgap characteristics from experimental angle-resolved emission pattern measurements• Operated transmission line, IV, temperature-dependent Hall effect, and electroluminescence measurements• Wrote analysis code to extract electrical characteristics from data based on a variety of theoretical models

The Cornell Beam Research Accelerator (COBRA), generates very high energy plasma for a variety of experimental applications, including physical modeling and fusion research. Gas injection serves a key role in the system. • Produced gas puff density images using a Planar Laser Induced Fluorescence system • Diagnosed and resolved timing, sealing, optical, mechanical, and software errors in the test system • Determined and documented the relationship between plena pressures and gas puff density distribution, allowing plasma system users to compensate for long-term changes in the nozzle and to test novel gas distributions

Bedford, Massachusetts, Us

• Interfaced with the autonomous lawnmower "Terra" during initial development to run tests and recover logs• Identified and resolved mechanical, electrical, and software bugs in test robots• Worked with volunteer testers to incorporate user feedback into the robot interface

Ithaca, New York, Us

Designed, populated, programmed, tested, and debugged PCBs for power distribution and inertial measurement

Doctor Of Philosophy - Phd, Electrical Engineering

Bachelor Of Science - Bs, Engineering Physics

High School