Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10523333 | Optical signal transmission apparatus for generating multi-level optical signal and method performed by the same | Sun Hyok Chang, Joon Young HUH, Sae-Kyoung KANG, Joon Ki LEE | 2019-12-31 |
| 10447405 | Optical receiver with optical demultiplexer | Sae-Kyoung KANG, Joon Young HUH, Joon Ki LEE | 2019-10-15 |
| 10359572 | Device and method for detecting optical signal | Sae-Kyoung KANG, Joon Ki LEE, Joon Young HUH | 2019-07-23 |
| 10110338 | Apparatus and method for detecting optical signal | Sae-Kyoung KANG, Joon Young HUH, Joon Ki LEE | 2018-10-23 |
| 9804346 | Receptacle-collimator assembly and multi-wavelength optical receiver module | Sae-Kyoung KANG, Joon Ki LEE, Joon Young HUH | 2017-10-31 |
| 9571187 | Wavelength-division multiplexing optical communication system and method for measuring optical performance of an output signal for the system | Han Hyub Lee, Eon-sang KIM, Sang Soo Lee | 2017-02-14 |
| 9397778 | Tunable optical network unit for multi-wavelength passive optical network system and operating method thereof | Heuk Park, Jyung Chan Lee, Sang Soo Lee | 2016-07-19 |
| 9246628 | Hybrid passive optical network system | Seung Hyun CHO, Seung Il Myong, Sang Soo Lee, Jong Hyun Lee, Eui Suk Jung +1 more | 2016-01-26 |
| 9225570 | Method of allocating upstream bandwidth resource and method of transmitting upstream data in orthogonal frequency division multiple access-open optical subscriber network | Kyeong Hwan DOO, Hak-Jeon Bang, Seung Il Myong, Seung Hyun CHO | 2015-12-29 |
| 9219567 | Converged PON for TDMA-PON service based on OFDMA-PON | Kwang-Ok Kim, Seung Hyun CHO, Seung Il Myong, Sang Soo Lee, Jong Hyun Lee | 2015-12-22 |
| 9197351 | Method of selecting wavelength of optical network unit in passive optical network | Kyeong Hwan DOO, Seung Il Myong, Han Hyub Lee, Seung Hyun CHO, Sang Soo Lee | 2015-11-24 |
| 9191116 | Orthogonal frequency division multiple access-passive optical network comprising optical network unit and optical line terminal | Seung Hyun CHO, Seung Il Myong, Kyeong Hwan DOO, Sang Soo Lee, Jong Hyun Lee | 2015-11-17 |
| 9130675 | Signal transmission apparatus and optical modem modulation method | Seung Hyun CHO, Kwang-Ok Kim, Eui Suk Jung, Seung Il Myong, Sang Soo Lee +1 more | 2015-09-08 |
| 9112600 | Wavelength tuning time measurement apparatus and method for multi-wavelength passive optical network | Seung-II Myong, Han Hyub Lee, Sang Soo Lee | 2015-08-18 |
| 9100121 | Link setup method for wavelength division multiplexing wavelength passive optical network(WDM PON) system | Eun-Gu Lee, Eui Suk Jung, Sil-Gu Mun, Han Hyub Lee | 2015-08-04 |
| 9091824 | User-selectable laser and optical transmitter having the same | Seung Hyun CHO, Seung Il Myong, Kwang-Ok Kim, Eui Suk Jung, Sang Soo Lee | 2015-07-28 |
| 9008513 | Wavelength division multiplexing-passive optical network system | Byoung Whi Kim, Han Hyub Lee, Bong Tae Kim | 2015-04-14 |
| 8824890 | Open optical access network system | Han Hyub Lee, Seung Hyun CHO, Eui Suk Jung, Eun-Gu Lee, Jong-Hoon Lee +1 more | 2014-09-02 |
| 8724943 | Angled physical contact receptacle stub and angled physical contact transmitter optical sub-assembly having the same | Jong-Hoon Lee, Seung Hyun CHO, Sang Soo Lee, Eun-Gu Lee, Han Hyub Lee | 2014-05-13 |
| 8644711 | Apparatus and method for OLT and ONU for wavelength agnostic wavelength-division multiplexed passive optical networks | Byoung Whi Kim, Manyong Park, Woo-Ram Lee, Bong Tae Kim, Seung Hyun CHO +4 more | 2014-02-04 |
| 8571420 | Apparatus and method for driving wavelength-independent light source | Seung Hyun CHO, Han Hyub Lee, Jong-Hoon Lee, Eun-Gu Lee, Eui Suk Jung +1 more | 2013-10-29 |
| 8542425 | Wavelength tunable light source | Seung Hyun CHO, Jong-Hoon Lee, Eun-Gu Lee, Han Hyub Lee, Eui Suk Jung +1 more | 2013-09-24 |
| 8364043 | Method and apparatus for controlling reflective semiconductor optical amplifier (RSOA) | Seung Hyun CHO, Byoungi-whi Kim, Jea Hoon Yu, Jai-sang Koh | 2013-01-29 |
| 7995626 | Athermal external cavity laser | Mahn Yong Park, Geon Jeong, Chul Young Kim, Seung Hyun CHO, Woo-Ram Lee +1 more | 2011-08-09 |
| 7679819 | Feed-forward current injection circuits and semiconductor optical amplifier structures for downstream optical signal reuse method | Byoung Whi Kim, Mahn Yong Park, Seung Hyun CHO, Woo-Ram Lee, Geon Jeong +1 more | 2010-03-16 |