Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6413891 | Glass material suitable for a waveguide of an optical amplifier | Doo-Hee Cho, Yong Gyu Choi | 2002-07-02 |
| 6404788 | Cr and Yb codoped optical material systems for enhanced infrared fluorescence emission and their application schemes | Yong Gyu Choi, Hak Kyu Lee, Dong Sung Lim | 2002-06-11 |
| 6385216 | Optical fiber mode-locked laser | Do-Il Chang, Ho-Young Kim, Min Yong Jeon | 2002-05-07 |
| 6298074 | Mode-locked fiber laser and fiber amplifier using single pump laser | Min Yong Jeon, Hak Kyu Lee, Seung-Beom Kang | 2001-10-02 |
| 6266458 | Tunable optical filtering system using fiber-optic polarimetric interferometer | Joon Tae Ahn, Hak Kyu Lee, Min Yong Jeon, Dong Sung Lim | 2001-07-24 |
| 6266145 | Apparatus for measurement of an optical pulse shape | Hak Kyu Lee, Dong Sung Lim, Min Yong Jeon, Joon Tae Ahn | 2001-07-24 |
| 6160627 | Optical fiber Mach-Zehnder interferometer filter | Joon Tae Ahn, Hak Kyu Lee, Min Yong Jeon, Dong Sung Lim, El-Hang Lee | 2000-12-12 |
| 6101027 | All-optical wavelength converter using a semiconductor optical amplifier and a polarization interferometer | Hak Kyu Lee, Joon Tae Ahn, Min Yong Jeon, Dong Sung Lim, Ho-Young Kim | 2000-08-08 |
| 6097861 | Multi-wavelength channel transmission filter | Hak Kyu Lee, Joon Tae Ahn, El-Hang Lee | 2000-08-01 |
| 6055345 | Multi-wavelength channel transmission-type optical filter | Joon Tae Ahn, Hak Kyu Lee, El-Hang Lee | 2000-04-25 |
| 5999545 | Optical fiber laser and a method of locking a combined mode utilizing thereof | Min Yong Jeon, Hak Kyu Lee, El-Hang Lee | 1999-12-07 |
| 5898716 | Structure of a passively mode-locked optical fiber laser | Joon Tae Ahn, Hack Kyu Lee | 1999-04-27 |
| 5828680 | Hybrid type passively and actively mode-locked laser scheme | Seo-Yeon Park, Hak Kyu Lee, Min Yong Jeon | 1998-10-27 |
| 5812567 | Wavelength tunable mode-locking optical fiber laser | Min Yong Jeon, Hak Kyu Lee, El-Hang Lee | 1998-09-22 |
| 5774217 | Measurement of nonlinear refractive index coefficient of optical fiber by Sagnac interferometer | Hak Kyu Lee, Seo-Yeon Park, El-Hang Lee | 1998-06-30 |
| 5734665 | Optical fiber laser | Min Yong Jeon, Wang-Yuhl Oh, Hak Kyu Lee, El-Hang Lee | 1998-03-31 |
| 5592319 | All-optical signal processing apparatus of non-linear fiber loop mirror type | Hak Kyu Lee, Seo-Yeon Park, El-Hang Lee | 1997-01-07 |
| 5524118 | Wavelength-varying multi-wavelength optical filter laser using a single pump light source | Hak Kyu Lee, Seo-Yeon Park, El-Hang Lee | 1996-06-04 |
| 5321498 | Planar integrated crossover optical system | Seok-Ho Song, El-Hang Lee | 1994-06-14 |