Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8428460 | Wavelength division multiplexing passive optical network having multiple branches of optical distribution | Chang Hee Lee, Hak Kyu Lee | 2013-04-23 |
| 6560251 | Mode-locked laser stabilizing apparatus and method thereof | Min Yong Jeon, Hak Kyu Lee, Joon Tae Ahn, Do-Il Chang, Kyong Hon Kim | 2003-05-06 |
| 6549330 | Optical gain fiber doped with rare earth ions | Yong Gyu Choi, Doo-Hee Cho, Kyong Hon Kim | 2003-04-15 |
| 6538804 | Planar waveguide-type optical amplifier switch | Kyong Hon Kim, Yong Gyu Choi, Hak Kyu Lee, Min Yong Jeon, Joon Tae Ahn +2 more | 2003-03-25 |
| 6459846 | Complex rare-earths doped optical waveguide | Yong Gyu Choi, Kyong Hon Kim, Hak Kyu Lee | 2002-10-01 |
| 6404788 | Cr and Yb codoped optical material systems for enhanced infrared fluorescence emission and their application schemes | Yong Gyu Choi, Kyong Hon Kim, Hak Kyu Lee | 2002-06-11 |
| 6266145 | Apparatus for measurement of an optical pulse shape | Hak Kyu Lee, Min Yong Jeon, Joon Tae Ahn, Kyong Hon Kim | 2001-07-24 |
| 6266458 | Tunable optical filtering system using fiber-optic polarimetric interferometer | Joon Tae Ahn, Hak Kyu Lee, Min Yong Jeon, Kyong Hon Kim | 2001-07-24 |
| 6256432 | Polarization independent all-optical demultiplexer | Min Yong Jeon, Hak Kyu Lee, Joon Tae Ahn, Kyoung-Hon Kim | 2001-07-03 |
| 6160627 | Optical fiber Mach-Zehnder interferometer filter | Joon Tae Ahn, Hak Kyu Lee, Min Yong Jeon, Kyong Hon Kim, El-Hang Lee | 2000-12-12 |
| 6101027 | All-optical wavelength converter using a semiconductor optical amplifier and a polarization interferometer | Hak Kyu Lee, Kyong Hon Kim, Joon Tae Ahn, Min Yong Jeon, Ho-Young Kim | 2000-08-08 |