Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12407417 | Method and apparatus for optimizing performance of optical transceiver | Hun Sik Kang, In Ki HWANG, Seung Woo Lee | 2025-09-02 |
| 11408822 | Method of generating terahertz wave and apparatuses performing the same | Sang Rok MOON | 2022-08-09 |
| 11079548 | Optical connection apparatus and optical connection method using the same | Joon Ki LEE | 2021-08-03 |
| 10904043 | Optical transmission apparatus and method for processing signal based on direct detection | Hun Sik Kang, Sang Rok MOON, Seung Woo Lee, In Ki HWANG | 2021-01-26 |
| 10523333 | Optical signal transmission apparatus for generating multi-level optical signal and method performed by the same | Jie Hyun Lee, Joon Young HUH, Sae-Kyoung KANG, Joon Ki LEE | 2019-12-31 |
| 10523323 | Apparatus and method for equalization and compensation of chromatic dispersion in optical transmission | Hun Sik Kang, Sang Rok MOON, Seung Woo Lee, In Ki HWANG | 2019-12-31 |
| 9787401 | Mode division multiplexed passive optical network (MDM-PON) apparatus, and transmission and reception method using the same | Kwang Joon Kim, Hyun Jae Lee, Chan Gyo HAN | 2017-10-10 |
| 9274354 | Polarization control device and method | Hwan Seok CHUNG | 2016-03-01 |
| 9264171 | Multi-mode fiber-based optical transmission/reception apparatus | Hwan Seok CHUNG | 2016-02-16 |
| 9240667 | Optical pumping apparatus for few-mode fiber amplification | Hwan Seok CHUNG | 2016-01-19 |
| 9191121 | Optical transmitter and method thereof | Hwan Seok CHUNG | 2015-11-17 |
| 8995843 | Multicarrier based optical signal transmitting apparatus and optical signal receiving apparatus | Hwan Seok CHUNG | 2015-03-31 |
| 8681885 | OFDM receiver and method for compensating for I/Q imbalance | Hwan Seok CHUNG, Kwang Joon Kim | 2014-03-25 |
| 8670679 | Coherent optical receiving apparatus and optical signal processing method | Hwan Seok CHUNG | 2014-03-11 |
| 8565620 | Apparatus for receiving optical signal and method of controlling phase offset for differential quadrature phase shift keying | Hwan Seok CHUNG, Jyung Chan Lee, Kwang Joon Kim | 2013-10-22 |
| 8406625 | Apparatus and method for cross-connecting optical path in wavelength division multiplexing system | Hwan Seok CHUNG, Sang Soo Lee, Kwang Joon Kim | 2013-03-26 |
| 8260154 | Digital equalization apparatus and method for coherent optical receiver | Hwan Seok CHUNG, Kwang Joon Kim | 2012-09-04 |
| 8224190 | Channel assignment method and apparatus for wavelength-division-multiplexed transmission system | Hwan Seok CHUNG, Sang Soo Lee, Kwang Joon Kim | 2012-07-17 |
| 8155521 | Multi-degree cross-connector system, operating method and optical communication network using the same | Hwan Seok CHUNG, Kwangloon Kim, Sang Soo Lee | 2012-04-10 |
| 8116623 | Multi-ring network operating method and system | Hwan Seok CHUNG, Sang Soo Lee, Kwang Joon Kim | 2012-02-14 |
| 8036527 | Apparatus and method for protection switching of optical channel | Hwan Seok CHUNG, Sang Soo Lee, Kwang Joon Kim | 2011-10-11 |
| 8009986 | Optical node for mesh-type WDM optical network | Hwan Seok CHUNG, Sang Soo Lee, Kwangjoon Kim | 2011-08-30 |
| 7751710 | Photonic cross-connector system, WDM system using the same photonic cross-connector, and optical communication network based on the same WDM system | Hwan Seok CHUNG, Sang Soo Lee, Kwangjoon Kim | 2010-07-06 |
| 7385753 | Hybrid optical amplifier using gain-clamped semiconductor optical amplifier enabling raman amplification | Hee Sang CHUNG, Kwangjoon Kim | 2008-06-10 |
| 7230958 | Raman amplifier and raman pumping method | Hee Sang CHUNG, Jin Soo Han, Ji-Sung Jung, Heuk Park, Won Kyoung Lee +1 more | 2007-06-12 |