Hak Kyu Lee

Title: Hak Kyu Lee: Inventor of a Tunable Wavelength Filter

Introduction

Hak Kyu Lee is an inventor based in Seoul, South Korea. His work includes an invention designed to improve wavelength stability in tunable laser systems. He is associated with Solidsystems Inc. and Chem Optics Inc. Lee is credited with 1 patent in the information provided.

Latest Patents

Lee’s listed patent is “Tunable Wavelength Filter with Embedded Metal Temperature Sensor and Its Application to External-Cavity Type Tunable Wavelength Laser.” The invention describes a tunable wavelength filter with an embedded metal temperature sensor, along with an external-cavity tunable wavelength laser module.

The design uses a metal thin film whose electrical resistance changes with temperature. The sensor is placed on an isothermal layer that shares the optical waveguide’s temperature distribution, enabling more accurate measurement of the waveguide’s temperature. This approach is intended to support wavelength stability in the laser module.

Career Highlights

Lee’s listed professional affiliations include Solidsystems Inc. and Chem Optics Inc. The available information does not specify his roles or the dates of his work at these companies.

Collaborations

Lee’s listed coworkers include Woo Jin Lee and Jun Kyu Seo. The available information does not detail their specific contributions to the patent.

Conclusion

Hak Kyu Lee’s listed invention combines temperature sensing with tunable optical filtering to help maintain wavelength stability in an external-cavity laser module.