Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9804327 | Phase error compensating apparatus | Heuk Park, Sae-Kyoung KANG | 2017-10-31 |
| 9787395 | Control apparatus and method for monitoring optical fiber link | Seung Hyun CHO, Jong Hyun Lee, Sang Soo Lee, Chan Gyo HAN | 2017-10-10 |
| 9274354 | Polarization control device and method | Sun Hyok Chang | 2016-03-01 |
| 9264171 | Multi-mode fiber-based optical transmission/reception apparatus | Sun Hyok Chang | 2016-02-16 |
| 9240667 | Optical pumping apparatus for few-mode fiber amplification | Sun Hyok Chang | 2016-01-19 |
| 9191121 | Optical transmitter and method thereof | Sun Hyok Chang | 2015-11-17 |
| 8995843 | Multicarrier based optical signal transmitting apparatus and optical signal receiving apparatus | Sun Hyok Chang | 2015-03-31 |
| 8681885 | OFDM receiver and method for compensating for I/Q imbalance | Sun Hyok Chang, Kwang Joon Kim | 2014-03-25 |
| 8670679 | Coherent optical receiving apparatus and optical signal processing method | Sun Hyok Chang | 2014-03-11 |
| 8565620 | Apparatus for receiving optical signal and method of controlling phase offset for differential quadrature phase shift keying | Sun Hyok Chang, Jyung Chan Lee, Kwang Joon Kim | 2013-10-22 |
| 8406625 | Apparatus and method for cross-connecting optical path in wavelength division multiplexing system | Sun Hyok Chang, Sang Soo Lee, Kwang Joon Kim | 2013-03-26 |
| 8260154 | Digital equalization apparatus and method for coherent optical receiver | Sun Hyok Chang, Kwang Joon Kim | 2012-09-04 |
| 8224190 | Channel assignment method and apparatus for wavelength-division-multiplexed transmission system | Sun Hyok Chang, Sang Soo Lee, Kwang Joon Kim | 2012-07-17 |
| 8155521 | Multi-degree cross-connector system, operating method and optical communication network using the same | Kwangloon Kim, Sang Soo Lee, Sun Hyok Chang | 2012-04-10 |
| 8116623 | Multi-ring network operating method and system | Sun Hyok Chang, Sang Soo Lee, Kwang Joon Kim | 2012-02-14 |
| 8036527 | Apparatus and method for protection switching of optical channel | Sun Hyok Chang, Sang Soo Lee, Kwang Joon Kim | 2011-10-11 |
| 8009986 | Optical node for mesh-type WDM optical network | Sun Hyok Chang, Sang Soo Lee, Kwangjoon Kim | 2011-08-30 |
| 7848650 | Device and method of swapping optical labels and reproducing optical payload and optical switching device using the device | Kwangjoon Kim | 2010-12-07 |
| 7751710 | Photonic cross-connector system, WDM system using the same photonic cross-connector, and optical communication network based on the same WDM system | Sun Hyok Chang, Sang Soo Lee, Kwangjoon Kim | 2010-07-06 |
| 7356220 | Apparatus and method for reducing signal noise and OCDMA receiver and method | Heuk Park, Kwang Joon Kim | 2008-04-08 |