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Journal of the Optical Society of Korea

Archives Papers: 106

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Two-Dimensional Sub-diffraction-limited Imaging by an Optimized Multilayer Superlens

MarziehAhmadi; KeyvanForooraghi; RezaFaraji-Dana; MohsenGhaffari-Miab;

Keywords:Circular polarization;Computational electromagnetic methods;Diffraction limit;Effective medium theory;Medical imaging;Spatial frequency;

Abstracts:An optimized multilayer superlens is designed, using a rigorous and efficient approach based on the method of moments (MoM) in conjunction ... [J. Opt. Soc. Korea 20, 653-662 (2016)]

A Numerical Study of Different Types of Collimators for a High-Resolution Preclinical CdTe Pixelated Semiconductor SPECT System

Hyun-WooJeong; JongSeokKim; SeYoungBae; KanghyenSeo; SeungHunKim; SeongHyeonKang; DongJinShin; Chang-LaeLee; KyuseokKim; YoungjinLee;

Keywords:Attenuation coefficient;Collimation;Gamma ray imaging;Imaging systems;Single photon emission computed tomography;Spatial resolution;

Abstracts:In single-photon-emission computed tomography (SPECT) with a pixelated semiconductor detector (PSD), not only pinhole collimators but also ... [J. Opt. Soc. Korea 20, 663-668 (2016)]

Simulation for Small Lamellar Grating FTIR Spectrometer for Passive Remote Sensing

YouKyoungChung; Choong-ManJo; SeongKyuKim; InCheolKim; Do-HyunPark; Hyo-YookBae; YoungIlKang;

Keywords:Diffraction gratings;Diffraction theory;Interference;Optical testing;Passive remote sensing;Wave propagation;

Abstracts:A miniaturized FTIR spectrometer based on lamellar grating interferometry is being developed for passive remote-sensing. Consisting of a ... [J. Opt. Soc. Korea 20, 669-677 (2016)]

A Novel Optical High-Availability Seamless Redundancy (OHSR) Design Based on Beam Splitting / Combining Techniques

IbraheemRaedAltaha; SungChulKim; JongMyungRhee;

Keywords:Broadcast networks;Fiber optic communications;Network survivability;Optical amplifiers;Optical networks;Ring networks;

Abstracts:The standard high-availability seamless redundancy (HSR) protocol utilizes duplicated frame copies of each sent frame for zero fail over ... [J. Opt. Soc. Korea 20, 678-685 (2016)]

Evolution Properties of a Partially Coherent Flat-topped Vortex Hollow Beam Propagating in Uniaxial Crystals Orthogonal to the Optical Axis

DajunLiu; GuiqiuWang; XixianLuo; HongmingYin; YaochuanWang;

Keywords:Hollow beams;Laser beam propagation;Laser beams;Light beams;Refractive index;Vortex beams;

Abstracts:The analytical expressions for a partially coherent flat-topped vortex hollow beam propagating in uniaxial crystals orthogonal to the ... [J. Opt. Soc. Korea 20, 686-693 (2016)]

Cross-Correlation Measurements of Phase Noise Induced by Relative Intensity Noise in Photodetectors

ZheweiCao; ChunYang; ZhenghuaZhou;

Keywords:Diode lasers;Fourier transforms;Phase measurement;Phase noise;Power spectra;Refractive index;

Abstracts:Up-converted phase noise, which is induced by the low-frequency relative intensity noise (RIN) of a laser through AM-PM conversion within a ... [J. Opt. Soc. Korea 20, 694-697 (2016)]

All-optical Flip-flop based on Optical Beating and Bistability in an Injection-locked Fabry-Perot Laser Diode

JunsuKim; HyuekJaeLee; Chang-SooPark;

Keywords:Diode lasers;Erbium doped fiber amplifiers;Injection locking;Laser coupling;Tunable diode lasers;Tunable lasers;

Abstracts:We report a new all-optical flip-flop (AOFF) with a quite simple structure, using optical beating in an injection-locked Fabry-Perot laser ... [J. Opt. Soc. Korea 20, 698-703 (2016)]

Bandwidth Allocation Under Multi-Level Service Guarantees of Downlink in the VLC-OFDM System

ShuangxingLiu; XuefenChi; LinlinZhao;

Keywords:Free space optics;Light intensity;Optical communications;Quadrature amplitude modulation;Signal transmission;Visible light communications;

Abstracts:In this paper, we explore a low-complex bandwidth allocation (BA) scheme with multi-level service guarantees in VLC-OFDM systems. Effective ... [J. Opt. Soc. Korea 20, 704-715 (2016)]

High Power Switchable Dual-Wavelength Linear Polarized Yb-Dozped Fiber Laser around 1120 nm

XiaojuanLiu; BangcaiHuang; GongxiangWei; KezhenHan; YanHuang; FangfangLiu;

Keywords:Effective refractive index;Fiber Bragg gratings;Fiber lasers;High power fiber lasers;Hole burning;Laser operation;

Abstracts:A single-and dual-wavelength switchable polarized Yb-doped double-clad fiber laser around 1120 nm based on a pair of fiber Bragg gratings ... [J. Opt. Soc. Korea 20, 716-721 (2016)]

Proposal for Optical One-time Password Authentication Using Digital Holography

SeokHeeJeon; SangKeunGil;

Keywords:Digital holographic imaging;Fourier optics;Holographic interferometry;Holographic techniques;Optical data processing;Phase shifting digital holography;

Abstracts:A new optical one-time password (OTP) authentication method using digital holography is proposed, which enhances security strength in the ... [J. Opt. Soc. Korea 20, 722-732 (2016)]

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