Assignee
LEE CHANG-HEE
KR·14 granted patents·2 pending applications·57 citations·filing 2004–2012
Top patents by PatentIndex Score
16 records- 0195US8326151B2Low-cost WDM source with an incoherent light injected Fabry-Perot laser diodeLEE CHANG HEE·Filed 2011·Granted Dec 4, 2012·19 cites·8 claims
- 0281US8290370B2Wavelength division multiplexing passive optical network for providing both of broadcasting service and communication service and central office used thereofLEE CHANG-HEE·Filed 2006·Granted Oct 16, 2012·9 cites·6 claims
- 0374US8078061B2Wavelength division multiplexed-passive optical network capable of high-speed transmission of an optical signal by using modulation format having high spectral efficiencyLEE CHANG-HEE·Filed 2006·Granted Dec 13, 2011·6 cites·13 claims
- 0471US8428460B2Wavelength division multiplexing passive optical network having multiple branches of optical distributionLEE CHANG-HEE·Filed 2005·Granted Apr 23, 2013·4 cites·11 claims
- 0570US8116628B2Wavelength-division multiplexed passive optical network for embodying wavelength-independent operation of wavelength-locked Fabry-Perot laser diodes by injecting a low noise broadband light sourceLEE CHANG-HEE·Filed 2006·Granted Feb 14, 2012·4 cites·22 claims
- 0664US8180221B2Wavelength-division multiplexed passive optical network for reducing degradation in noise characteristic of wavelength-locked fabry-perot laser diodesLEE CHANG-HEE·Filed 2006·Granted May 15, 2012·3 cites·9 claims
- 0763US8818200B2Multiple star wavelength division multiplexing passive optical networks using a wavelength assignment methodLEE CHANG-HEE·Filed 2006·Granted Aug 26, 2014·2 cites·8 claims
- 0863US8687972B2Multiple star wavelength division multiplexing passive optical networks using a wavelength assignment methodLEE CHANG-HEE·Filed 2012·Granted Apr 1, 2014·1 cites·8 claims
- 0961US8861963B2Shared high-intensity broadband light source for a wavelength-division multiple access passive optical networkLEE CHANG-HEE·Filed 2004·Granted Oct 14, 2014·5 cites·9 claims
- 1057US8073334B2Optical modulation method and system in wavelength locked FP-LD by injecting broadband light source using mutually injected FP-LDLEE CHANG-HEE·Filed 2005·Granted Dec 6, 2011·1 cites·22 claims
- 1154US9083469B2Device and method for controlling lasing wavelength of tunable laser, and a wavelength division multiplexed-passive optical network having the sameLEE CHANG-HEE·Filed 2010·Granted Jul 14, 2015·1 cites·10 claims
- 1252US9130671B2Apparatus for monitoring failure positions in wavelength division multiplexing-passive optical networks and wavelength division multiplexing-passive optical network systems having the apparatusLEE CHANG-HEE·Filed 2006·Granted Sep 8, 2015·2 cites·20 claims
- 1350US8798478B2Low-cost WDM source with an incoherent light injected fabry-perot laser diodeLEE CHANG HEE·Filed 2011·Granted Aug 5, 2014·0 cites·6 claims
- 1446US8442400B2Wavelength division multiplexed-passive optical network capable of high-speed transmission of an optical signal by using modulation format having high spectral efficiencyLEE CHANG-HEE·Filed 2011·Granted May 14, 2013·0 cites·19 claims
- 1532US2012213519A1Transmission device of a low-noise optical signal having a low-noise multi-wavelength light source, a transmission device of broadcast signals using a low-noise multi-wavelength light source, and an optical access network having the sameLEE CHANG-HEE·Filed 2010·Application pending·0 cites
- 1632US2012106965A1optical source for wavelength division multiplexed optical network capable of high-speed transmission of an optical signal by using un-polarized light source and a wavelength division multiplexed-passive optical network having the sameLEE CHANG-HEE·Filed 2010·Application pending·0 cites
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