Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671045 | Apparatus and method for measuring optical signal-to-noise ratio | Chang Hee Lee, Kwang-Uk Chu | 2003-12-30 |
| 6559984 | Apparatus for monitoring optical path based on the identification of optical cross-connect input ports | Chang Hee Lee, Chu Kwang Uk | 2003-05-06 |
| 6404957 | Optical power divider and fabrication method thereof | Hyun-Chae Song, Sang-yun Yi, Woo-Hyuk Jang, Tae-Hyung Rhee | 2002-06-11 |
| 6396574 | Apparatus for measuring the wavelength, optical power and optical signal-to-noise ratio of each optical signal in wavelength-division multiplexing optical communication | Chang Hee Lee, Kwang-Uk Chu | 2002-05-28 |
| 6011641 | Wavelength insensitive passive polarization converter employing electro-optic polymer waveguides | Min-Cheol Oh | 2000-01-04 |
| 5018809 | Fabrication method and structure of optical waveguides | Yung Sung Son | 1991-05-28 |