Su-Jae Lee

Title: Su-Jae Lee: Innovator in Photonic Technologies

Introduction

Su-Jae Lee is a prominent inventor based in Daejeon, South Korea. He has made significant contributions to the field of photonic technologies, holding a total of 2 patents. His work focuses on developing advanced optical devices and phase shifters that enhance the performance of telecommunications systems.

Latest Patents

One of Su-Jae Lee's latest patents is a phase shifter with a photonic band gap structure using a ferroelectric thin film. This innovative phase shifter includes a microstrip transmission line that acts as a microwave input/output line, along with a series of tunable capacitors arranged at regular intervals. The design incorporates electrodes on a substrate that apply DC voltages to the capacitors, while RF chokes and quarter wavelength radial-stubs are connected to prevent high frequency signals from interfering with the DC bias terminal. Additionally, a plurality of photonic band gap structures are periodically arrayed on the ground plane of the substrate.

Another notable patent is an optical device for modulating a high frequency optical signal. This device features a light source that generates a pumping light beam, a first oscillator that produces a first light beam with multiple modes, and an optical element that selects a first mode from these modes. A second oscillator generates a second light beam of a different mode, and an optical coupler links the two modes to induce a beat phenomenon, ultimately generating a high frequency optical signal.

Career Highlights

Su-Jae Lee is affiliated with the Electronics and Telecommunications Research Institute, where he continues to push the boundaries of innovation in his field. His work has garnered attention for its potential applications in improving telecommunications technologies.

Collaborations

Throughout his career, Su-Jae Lee has collaborated with notable colleagues, including Kwang-Yong Kang and Young-Tae Kim. These collaborations have contributed to the advancement of research and development in photonic technologies.

Conclusion

Su-Jae Lee's contributions to the field of photonics demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of complex technologies that have the potential to revolutionize telecommunications.