164 citations · 692 across the 8 of their papers we have counts for
9 papers
Tunable low-phase-noise terahertz synthesis using a fiber-interferometer-referenced optical frequency comb and an EDFA-integrated Vernier cavity
Masayuki Higaki, Yoshiaki Nakajima, Yu Tokizane +4
demonstrate a frequency-tunable, low-phase-noise terahertz (THz) synthesizer based on a fiber-interferometer-referenced optical frequency comb (OFC), an erbium-doped fiber amplifie…
Characterization of timing jitter spectra in free-running mode-locked lasers with 340 dB dynamic range over 10 decades of Fourier frequency
Kwangyun Jung, Jungwon Kim
We demonstrate a method that enables accurate timing jitter spectral density characterization of free-running mode-locked laser oscillators over more than 10-decade of Fourier freq…
Sub-20-Attosecond Timing Jitter Mode-Locked Fiber Lasers
Hyoji Kim, Peng Qin, Youjian Song +6
We demonstrate 14.3-attosecond timing jitter [integrated from 10 kHz to 94 MHz offset frequency] optical pulse trains from 188-MHz repetition-rate mode-locked Yb-fiber lasers. In o…
Frequency comb-based microwave transfer over fiber with instability using fiber-loop optical-microwave phase detectors
Kwangyun Jung, Junho Shin, Jinho Kang +3
We demonstrate a remote microwave/radio-frequency (RF) transfer technique based on the stabilization of a fiber link using a fiber-loop optical-microwave phase detector (FLOM-PD).…
Ultralow Phase Noise Microwave Generation From Mode-Locked Er-Fiber Lasers With Subfemtosecond Integrated Timing Jitter
Kwangyun Jung, Junho Shin, Jungwon Kim
We demonstrate ultralow phase noise 10-GHz microwave signal generation from a free-running mode-locked Er-fiber laser with -142 and -157 dBc/Hz single-sideband absolute phase noise…
Sub-femtosecond synchronization of microwave oscillators with mode-locked Er-fiber lasers
Kwangyun Jung, Jungwon Kim
We synchronize a 8.06-GHz microwave signal from a voltage-controlled oscillator with an optical pulse train from a 77.5- MHz mode-locked Er-fiber laser using a fiber-based optical-…