Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7149428 | OSNR monitoring method and apparatus using tunable optical bandpass filter and polarization nulling method | Yun Chur Chung, Chul Han Kim | 2006-12-12 |
| 7054553 | Apparatus for monitoring polarization-mode dispersion and chromatic dispersion and transmitting means for transmitting optical signal in optical network | Yeun-Chol Chung, Keun-Ju Park, Hun-Sik Kim, Jun-Heang Lee, Chun-Ju Yun | 2006-05-30 |
| 6597482 | Multiplexing/demultiplexing apparatus for wavelength division multiplexed system and wavelength division multiplexed passive optical subscriber networks using the same apparatus | Yun Chur Chung, Chang Hee Lee, Dae-Kwang Jung | 2003-07-22 |
| 6548806 | Apparatus for monitoring frequency of WDM signals using pilot tone | Yun Chur Chung, Keun Joo Park | 2003-04-15 |
| 6433864 | Apparatus for monitoring optical signal-to-noise ratio of optical signals in WDM optical transmission system | Yun Chur Chung, Keun Joo Park | 2002-08-13 |
| 6349103 | Cold-start wavelength-division-multiplexed optical transmission system | Yun Chur Chung, Jin Jang, Hoon Kim, Keun Joo Park, Kwan-Seop Lee | 2002-02-19 |