Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11899334 | Silicon photonics-based optical modulator | Sanghwa YOO, Sooyeon Kim, Jyung Chan Lee, Joon Ki LEE | 2024-02-13 |
| 11609474 | Terahertz signal generation apparatus and terahertz signal generation method using the same | Won Kyoung Lee, Seung Hyun CHO | 2023-03-21 |
| 11429006 | Silicon photonics-based optical transmission apparatus | Sanghwa YOO, Joon Ki LEE | 2022-08-30 |
| 11409047 | Optical coupling method and apparatus | Sanghwa YOO, Sae-Kyoung KANG, Joon Young HUH, Jongtae SONG, Joon Ki LEE | 2022-08-09 |
| 10476625 | Optical network system using wavelength channels included in O-band | Han Hyub Lee, Hwan Seok CHUNG | 2019-11-12 |
| 10003427 | Bidirectional optical element | Hwan Seok CHUNG | 2018-06-19 |
| 9900991 | Flexible printed circuit board for optical module | Sae-Kyoung KANG, Hwan Seok CHUNG | 2018-02-20 |
| 9804327 | Phase error compensating apparatus | Sae-Kyoung KANG, Hwan Seok CHUNG | 2017-10-31 |
| 9720170 | Arrayed waveguide grating device and method for manufacturing the same | Sang Soo Lee | 2017-08-01 |
| 9397778 | Tunable optical network unit for multi-wavelength passive optical network system and operating method thereof | Jie Hyun Lee, Jyung Chan Lee, Sang Soo Lee | 2016-07-19 |
| 8270406 | Method and apparatus for blocking forged multicast packets | Jong Tae Song, Kyung-Gyu Jeon, Soon Seok Lee | 2012-09-18 |
| 8010978 | Method and apparatus for providing personalized advertisements in internet protocol TV (IPTV) system | Soon Seok Lee | 2011-08-30 |
| 7755073 | Acousto-optic filter and optical CDMA system using the same | Bong Kyu Kim, Sang Jo Park, Kwang Joon Kim | 2010-07-13 |
| 7356220 | Apparatus and method for reducing signal noise and OCDMA receiver and method | Hwan Seok CHUNG, Kwang Joon Kim | 2008-04-08 |
| 7242834 | Dispersion-shifted fiber for optical parametric amplifier | Won Kyoung Lee, Hyun Jae Lee | 2007-07-10 |
| 7230958 | Raman amplifier and raman pumping method | Sun Hyok Chang, Hee Sang CHUNG, Jin Soo Han, Ji-Sung Jung, Won Kyoung Lee +1 more | 2007-06-12 |
| 7142570 | Apparatus and method for generating optical carrier for microwave and millimeterwave photonics system | Sang Soo Lee, Hyunwoo Cho, Sang-Kyu Lim, Je Soo Ko | 2006-11-28 |
| 7133196 | Erbium doped fiber amplifier for reducing transient phenomena of OSNR and BER in dynamic WDM system and amplifying method thereof | Won Kyoung Lee, Kwang Joon Kim | 2006-11-07 |
| 6498802 | Organic micro-cavity laser | Hye Yong Chu, Jeong Ik Lee, Seong Hyun Kim, Lee-Mi Do, Do Hoon Hwang +1 more | 2002-12-24 |
| 6317247 | Bias voltage stabilizing method for electricity-optical modulator based on off-level sampling | Choong Reul Yang, Wol-Yon Hwang, Hyun Hah Hong, Sun Gyu Han | 2001-11-13 |
| 5949089 | Organic light emitting diode having thin insulating layer | Jang-Joo Kim | 1999-09-07 |