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Optics Express|September 15, 2015
Robust terahertz self-heterodyne system using a phase noise compensation techniqueHajun Song, Jong-In SongOptics Express|August 10, 2017
Optical frequency switching scheme for a high-speed broadband THz measurement system based on the photomixing techniqueHajun Song, Sejin Hwang, Jong-In SongOptics Express|October 19, 2017
Continuous-wave THz vector imaging system utilizing two-tone signal generation and self-mixing detectionHajun Song, Sejin Hwang, Hongsung An, et al.Optics Express|August 13, 2025
Performance evaluation of free space optical communication terminal with local weather considerationsHajun Song, Dongju Kim, Hansol JangThe Review of Scientific Instruments|August 3, 2011
A phase-shift laser scanner based on a time-counting method for high linearity performanceHeesun Yoon, Hajun Song, Kyihwan ParkOptics Express|November 24, 2011
All-optical frequency upconversion of a quasi optical single sideband signal utilizing a nonlinear semiconductor optical amplifier for radio-over-fiber applicationsMinho Park, Jong-In SongOptics Express|March 29, 2012
All-optical frequency downconversion technique utilizing a four-wave mixing effect in a single semiconductor optical amplifier for wavelength division multiplexing radio-over-fiber applicationsHyoung-Jun Kim, Jong-In SongOptics Express|June 10, 2009
All-optical single-sideband upconversion with an optical interleaver and a semiconductor optical amplifier for radio-over-fiber applicationsHyoung-Jun Kim, Jong-In SongOptics Express|June 18, 2009
An all-optical frequency up-converter utilizing four-wave mixing in a semiconductor optical amplifier for sub-carrier multiplexed radio-over-fiber applicationsHyoung-Jun Kim, Jong-In Song, Ho-Jin SongOptics Express|February 12, 2014
Broadband photonic single sideband frequency up-converter based on the cross polarization modulation effect in a semiconductor optical amplifier for radio-over-fiber systemsSeung-Hun Lee, Hyoung-Jun Kim, Jong-In SongPageof 2