Issued Patents All Time
Showing 51–70 of 70 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7418204 | Passive optical network system providing simultaneously both broadcasting service and data service | Byung-Chang Kang, Yun-Je Oh, Tae-Sung Park | 2008-08-26 |
| 7415205 | Wavelength division multiplexed self-healing passive optical network using wavelength injection method | Hong-Seok Shin | 2008-08-19 |
| 7398021 | Optical transmitter and passive optical network using the same | Hong-Seok Shin, Hyun-Cheol Shin, Seong-Taek Hwang | 2008-07-08 |
| 7369588 | Broad-band optical semiconductor device and a method for manufacturing the same | Seong-Taek Hwang, Jong-In Shim | 2008-05-06 |
| 7340173 | Wavelength division multiplexing optical transmitter using Fabry-Perot laser | Dong-Jae Shin, Jea-Hyuck Lee, Jung-Kee Lee, Jeong-Seok Lee, Seong-Taek Hwang +1 more | 2008-03-04 |
| 7295778 | Wavelength division multiplexed passive optical network system | Jea-Hyuck Lee, Seong-Taek Hwang, Yun-Je Oh | 2007-11-13 |
| 7283748 | Self-healing wavelength division multiplexing-passive optical network system | Yun-Je Oh, Seong-Taek Hwang | 2007-10-16 |
| 7272316 | Wavelength-division-multiplexed optical source and passive optical network system employing the same | Byung-Chang Kang, Tae-Sung Park | 2007-09-18 |
| 7269352 | Wavelength division multiplexing light source apparatus using semiconductor optical amplifier | Yun-Je Oh, Seong-Taek Hwang | 2007-09-11 |
| 7254340 | Apparatus and method for tracking optical wavelength in WDM passive optical network using loop-back light source | Yun-Je Oh, Seong-Taek Hwang | 2007-08-07 |
| 7228021 | Bidirectional optical add/drop multiplexer and wavelength division multiplexed ring network using the same | Yun-Je Oh, Seong-Taek Hwang | 2007-06-05 |
| 7224519 | Low noise multi-wavelength light source and wavelength division multiplexing system using same | Hyun-Cheol Shin, Jeong-Seok Lee, Seong-Taek Hwang | 2007-05-29 |
| 7209609 | Light source apparatus for WDM optical communication and optical communication system | Dong-Jae Shin, Seong-Taek Hwang | 2007-04-24 |
| 7187700 | Method for maintaining wavelength-locking of Fabry-Perot laser regardless of change of external temperature and WDM light source using the method | Dong-Jae Shin, Jea-Hyuck Lee, Jung-Kee Lee, Seong-Taek Hwang, Yun-Je Oh | 2007-03-06 |
| 7149431 | Self-seeded Fabry-Perot laser device for wavelength division multiplexing system | Tae-Sung Park | 2006-12-12 |
| 7123633 | Method for maintaining mode-locked state of fabry-perot laser irrespective of temperature change and WDM light source using the same method | Dong-Jae Shin, Jea-Hyuck Lee, Seong-Taek Hwang, Yun-Je Oh | 2006-10-17 |
| 7073956 | Optical transceiver and passive optical network using the same | Dong-Jae Shin, Chang-Sup Shim, Seong-Taek Hwang | 2006-07-11 |
| 6996138 | Fabry-Perot laser apparatus mode-locked to multi-frequency lasing light source and optical transmission apparatus using the same | Tae-Sung Park, Yun-Je Oh | 2006-02-07 |
| 6813021 | Method and apparatus for monitoring optical signal-to-noise ratio (OSNR) using polarization-nulling method | Yun Chur Chung, Chul Han Kim, Jun Hang Lee | 2004-11-02 |
| 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, Seung Kyun Shin | 2003-07-22 |