Joon Tae Ahn
42Patents
8h-index
48Co-inventors
75Inventor score
Filing activity: Sep 5, 1996 → Jun 12, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6769274B2 | Method of manufacturing a planar waveguide using ion exchange method | Physics | 57 | Expired |
| US5898716A | Structure of a passively mode-locked optical fiber laser | Electricity | 19 | Expired |
| US7957432B2 | Light coupler and fiber laser system including the same | Electricity | 19 | Active |
| US8837885B2 | Optic coupler, optical fiber laser device, and active optical module using the same | Electricity | 17 | Active |
| US6160627A | Optical fiber Mach-Zehnder interferometer filter | Physics | 12 | Expired |
| US6097861A | Multi-wavelength channel transmission filter | Physics | 12 | Expired |
| US6101027A | All-optical wavelength converter using a semiconductor optical amplifier and a polarization interferometer | Electricity | 10 | Expired |
| US5822355A | Dual cavity laser | Electricity | 8 | Expired |
| US5790579A | Semiconductor laser device for pulse laser oscillation | Electricity | 6 | Expired |
| US6950579B2 | Polarization-independent optical polymeric intensity modulator | Physics | 6 | Expired |
| US7142740B2 | Planar lightwave circuit type optical transceiver module | Physics | 6 | Expired |
| US8611003B2 | Double clad fiber laser device | Electricity | 5 | Active |
| US6266145A | Apparatus for measurement of an optical pulse shape | Physics | 4 | Expired |
| US7738165B2 | Amplified spontaneous emission reflector-based gain-clamped fiber amplifier | Electricity | 4 | Active |
| US6256432A | Polarization independent all-optical demultiplexer | Electricity | 4 | Expired |
| US8828760B2 | Method of fabricating organic light emitting device | Electricity | 3 | Active |
| US6266458A | Tunable optical filtering system using fiber-optic polarimetric interferometer | Physics | 3 | Expired |
| US6785449B2 | Multimode interference coupler, multi-layer optical planar waveguide using the same and method of manufacturing the same | Physics | 3 | Expired |
| US6055345A | Multi-wavelength channel transmission-type optical filter | Physics | 3 | Expired |
| US9530963B2 | Methods of manufacturing organic light-emitting device | Electricity | 2 | Active |
| US7092602B2 | Method of fabricating polymer waveguides for passive alignment to optical fibers in an optical module | Physics | 2 | Expired |
| US8901548B2 | Dual-mode pixel including emissive and reflective devices and dual-mode display with the same | Electricity | 2 | Active |
| US8768117B2 | Optical fiber coupler, method of manufacturing the optical fiber coupler, and active optical module | Electricity | 2 | Active |
| US7511881B2 | Amplified spontaneous emission reflector-based gain-clamped fiber amplifier | Electricity | 2 | Expired |
| US7133195B2 | Gain-clamped fiber amplifier | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.