Assignee
CHANG DO-IL
US·3 granted patents·5 citations·filing 2009–2009
Top patents by PatentIndex Score
3 records- 0173US8228598B2Optical amplifier with Raman and rare-earth-doped fiber amplifier both pumped efficiently using direct and reflected pump lightCHANG DO-IL·Filed 2009·Granted Jul 24, 2012·3 cites·17 claims
- 0263US8111454B2Optical communication using shared optical pumpsCHANG DO-IL·Filed 2009·Granted Feb 7, 2012·2 cites·13 claims
- 0355US8233216B2Optical amplifier bandwidth alterationCHANG DO-IL·Filed 2009·Granted Jul 31, 2012·0 cites·23 claims
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