Inventor
CHANG DO IL
KR25 patents
⚠️ This page may combine multiple inventors who share the name “CHANG DO IL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
XTERA COMMUNICATIONS INC
9 patentsUS9461437B2Oct 4, 2016
Tilt control through optical pump power adjustment
XTERA COMMUNICATIONS INC3 citations72
US9831943B2Nov 28, 2017
Repeater OTDR using repeater based raman pumps
XTERA COMMUNICATIONS INC4 citations71
US9838136B2Dec 5, 2017
Optical transmission system and related remote optically pumped amplifier (ROPA) and method
XTERA COMMUNICATIONS INC2 citations69
US7665909B2Feb 23, 2010
System and method for implementing a high capacity unrepeatered optical communication system
XTERA COMMUNICATIONS INC5 citations59
US7336869B2Feb 26, 2008
System and method for implementing a high capacity unrepeatered optical communication system
XTERA COMMUNICATIONS INC2 citations59
US9735532B2Aug 15, 2017
Multi-span optical communications link having remote optically pumped amplifier
XTERA COMMUNICATIONS INC0 citations51
US7869673B2Jan 11, 2011
Remote larger effective area optical fiber
XTERA COMMUNICATIONS INC0 citations41
US7742223B2Jun 22, 2010
System and method for implementing a boosterless optical communication system
XTERA COMMUNICATIONS INC0 citations39
US7567593B2Jul 28, 2009
System and method for fractional Raman order pumping in optical communication systems
XTERA COMMUNICATIONS INC0 citations39
KOREA ELECTRONICS TELECOMM
7 patentsUS6163554ADec 19, 2000
Optical fiber raman laser
KOREA ELECTRONICS TELECOMM57 citations96
US6556596B1Apr 29, 2003
Apparatus for generating an optical fiber laser capable of tuning a wavelength thereof
KOREA ELECTRONICS TELECOMM35 citations92
US6426965B1Jul 30, 2002
Optical fiber cascaded Raman laser scheme
KOREA ELECTRONICS TELECOMM31 citations92
US6385216B1May 7, 2002
Optical fiber mode-locked laser
KOREA ELECTRONICS TELECOMM21 citations92
US6560251B1May 6, 2003
Mode-locked laser stabilizing apparatus and method thereof
KOREA ELECTRONICS TELECOMM15 citations84
US6560247B2May 6, 2003
Dual wavelength optical fiber laser
KOREA ELECTRONICS TELECOMM12 citations74
US6538804B1Mar 25, 2003
Planar waveguide-type optical amplifier switch
KOREA ELECTRONICS TELECOMM2 citations62
CHANG DO-IL
3 patentsUS8228598B2Jul 24, 2012
Optical amplifier with Raman and rare-earth-doped fiber amplifier both pumped efficiently using direct and reflected pump light
CHANG DO-IL3 citations60
US8111454B2Feb 7, 2012
Optical communication using shared optical pumps
CHANG DO-IL2 citations60
US8233216B2Jul 31, 2012
Optical amplifier bandwidth alteration
CHANG DO-IL0 citations49