Issued Patents All Time
Showing 1–25 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11609477 | Liquid crystal based optical deflector and optical scanner using the same | Yong Sung Lee, Yu Deuk Kim, Ju Seong Bang | 2023-03-21 |
| 9891453 | Integratable planar waveguide type non-reciprocal polarization rotator | YuDeuk Kim, Dong Wook Kim, Moon-Hyeok LEE | 2018-02-13 |
| 8724117 | System for measuring electro-optic coefficient by using interference fringe measurement, and method of measuring electro-optic coefficient by using the system | Seoung-Hun Lee, Seung Hwan Kim, El-Hang Lee | 2014-05-13 |
| 8040523 | Measurement method of chromatic dispersion of optical beam waveguide using interference fringe measurement system | Seunghwan KIM, Seounghun Lee, Elhang Lee | 2011-10-18 |
| 7179669 | Tunable semiconductor laser and method thereof | Sahng Gi Park, Moon-Ho Park, Ji Myon Lee, Su Hwan Oh | 2007-02-20 |
| 7099072 | Direct optical modulation type wavelength converter | Joon Tae Ahn, Jong Moo Lee | 2006-08-29 |
| 7065108 | Method of wavelength tuning in a semiconductor tunable laser | Sahng Gi Park, Moon-Ho Park, Ji Myon Lee, Su Hwan Oh | 2006-06-20 |
| 6990283 | Polymeric optical device having low polarization dependence and method of fabricating the same | Jong Moo Lee, Sun Tak Park, Joon Tae Ahn, Jung Jin Ju, Myung Hyun Lee | 2006-01-24 |
| 6950579 | Polarization-independent optical polymeric intensity modulator | Joon Tae Ahn, Sun Tak Park, Jong Moo Lee, Myung Hyun Lee | 2005-09-27 |
| 6873774 | Transmission optical fiber | Hong-Seok SEO, Yong Gyu Choi | 2005-03-29 |
| 6853480 | Optical amplifier | Yong Gyu Choi, Bong Je Park, Hong-Seok SEO, Doo-Hee Cho, Tae Hoon Lee +1 more | 2005-02-08 |
| 6845185 | High-speed wavelength channel selector and high-speed photonic integrated circuit-type space and wavelength multiplexed channel selector employing the same | Joon Tae Ahn, Yong Gyu Choi, Doo-Hee Cho | 2005-01-18 |
| 6785449 | Multimode interference coupler, multi-layer optical planar waveguide using the same and method of manufacturing the same | Jong Moo Lee, Doo-Hee Cho, Joon Tae Ahn, Myung Hyun Lee | 2004-08-31 |
| 6769274 | Method of manufacturing a planar waveguide using ion exchange method | Doo-Hee Cho, Joon Tae Ahn, Min Yong Jeon | 2004-08-03 |
| 6654520 | Periodically poled optical fiber and method for the manufacture thereof | Yong Gyu Choi, Jong-bae Kim, Doo-Hee Cho | 2003-11-25 |
| 6625361 | Method for forming two thin conductive films isolated electrically from each other on a fiber | Sahng Gi Park, Jong-bae Kim, Doo-Hee Cho, Yong Gyu Choi, Bun Lee | 2003-09-23 |
| 6583927 | Optical amplifier incorporating therein holmium-doped optical fiber | Yong Gyu Choi, Bong Je Park | 2003-06-24 |
| 6560247 | Dual wavelength optical fiber laser | Do-Il Chang, Min Yong Jeon | 2003-05-06 |
| 6560251 | Mode-locked laser stabilizing apparatus and method thereof | Min Yong Jeon, Hak Kyu Lee, Dong Sung Lim, Joon Tae Ahn, Do-Il Chang | 2003-05-06 |
| 6556596 | Apparatus for generating an optical fiber laser capable of tuning a wavelength thereof | Ho-Young Kim, Do-Il Chang, Hak Kyu Lee | 2003-04-29 |
| 6549330 | Optical gain fiber doped with rare earth ions | Yong Gyu Choi, Dong Sung Lim, Doo-Hee Cho | 2003-04-15 |
| 6538804 | Planar waveguide-type optical amplifier switch | Yong Gyu Choi, Hak Kyu Lee, Min Yong Jeon, Joon Tae Ahn, Dong Sung Lim +2 more | 2003-03-25 |
| 6490082 | Optical amplifier | Yong Gyu Choi | 2002-12-03 |
| 6459846 | Complex rare-earths doped optical waveguide | Yong Gyu Choi, Dong Sung Lim, Hak Kyu Lee | 2002-10-01 |
| 6426965 | Optical fiber cascaded Raman laser scheme | Do-Il Chang, Min Yong Jeon, Hak Kyu Lee | 2002-07-30 |