Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8861963 | Shared high-intensity broadband light source for a wavelength-division multiple access passive optical network | Chang Hee Lee, Bong-Soo Kim | 2014-10-14 |
| 7646978 | Methods and apparatuses to provide a wavelength division-multiplexing passive optical network based on wavelength-locked wavelength-division-multiplexed light sources | Chang Hee Lee, Kwang-Uk Chu | 2010-01-12 |
| 7171123 | Method for decreasing and compensating the transmission loss at a wavelength-division-multiplexed passive optical network and an apparatus therefor | Chang Hee Lee, Kwang-Uk Chu | 2007-01-30 |
| 6999653 | 4-port wavelength selective router | Chang Hee Lee, Hyun Deok Kim, Shin Jeong Hun, Cho Yun Hee | 2006-02-14 |
| 6952308 | Multi-stage bidirectional optical amplifier | Chang Hee Lee, Hyun Deok Kim, Shin Jeong Hun, Cho Yun Hee | 2005-10-04 |
| 6832017 | Bidirectional add/drop multiplexer and bidirectional add/drop amplifier module for band-split bidirectional networks | Chang Hee Lee, Hyun Deok Kim, Jeong Hun Shin, Yun Hee Cho | 2004-12-14 |
| 6529656 | Bi-Directional add/drop multiplexer and bidirectional add/drop amplifier module for wavelength interleaved bidirectional networks | Chang Hee Lee, Hyun Deok Kim, Jeong Hun Shin, Yun Hee Cho | 2003-03-04 |
| 6411660 | Device for reducing lock-up time of Frequency synthesizer | — | 2002-06-25 |