Heongkyu Ju

TL;DR: Raman spectroscopy is performing as a powerful analytical technique for qualitative and quantitative analysis of graphene and graphene-related compounds as mentioned in this paper, and the future direction and various questions relevant to Raman spectroscopic analysis of Graphene and graphene related compounds are discussed.

TL;DR: In this paper, the authors investigated nonlinear carrier dynamics in a multiquantum-well semiconductor optical amplifier (SOA) in the context of ultrafast all-optical logic and presented a rate-equation model that accounts for two-photon absorption, free-carrier absorption, self-and cross phase modulation, carrier heating, spectral, spatial hole burning, and self- and cross polarization modulation.

TL;DR: In this article, a simple all-optical logic device, composed of an SOA and an optical filter, is proposed to operate at 10 Gbit/s under different operation conditions.

TL;DR: Both the label-free nature that could allow reusability of the presented device and further miniaturization of the whole system can find use in a point-of-care testing with early diagnosis genetic analysis.

TL;DR: All-optical switching in a multi-quantum-well semiconductor optical amplifier-based nonlinear polarization switch is investigated using optical pulses with duration of 200 fs at a central wavelength of 1520 nm and full recovery of the switch is shown.