Journal of the Optical Society of Korea

A 150-Mb/s CMOS Monolithic Optical Receiver for Plastic Optical Fiber Link

Kang-Yeob Park — Sun, 25 Mar 2012 00:00:00 EST

Kang-Yeob Park, Won-Seok Oh, Kyung-Sun Ham, Woo-Young Choi
This paper describes a 150-Mb/s monolithic optical receiver for plastic optical fiber link using a standard CMOS technology. The receiver integrates a photodiode using an N-well/P-substrate junction, a pre amplifier, a post amplifier, and an output ... [J. Opt. Soc. Korea 16, 1-5 (2012)]

Ultrahigh Speed Reconfigurable Logic Operations Based on Single Semiconductor Optical Amplifier

Sanmukh Kaur Rajinder-Singh Kaler — Sun, 25 Mar 2012 00:00:00 EST

Sanmukh Kaur, Rajinder-Singh Kaler
We demonstrate an optical gate architecture using a single SOA to perform AND, OR and NOT logic functions. Simple reconfigurable all-optical logic operations are implemented using RZ modulated signals at 40 Gb/s. Contrast ratio and extinction ratio values have been analysed for the different types ... [J. Opt. Soc. Korea 16, 13-16 (2012)]

Photopolymer-based Surface-normal Input/Output Volume Holographic Grating Coupler for 1550-nm Optical Wavelength

Kwon-Yeon Lee — Sun, 25 Mar 2012 00:00:00 EST

Kwon-Yeon Lee, Sang-Huek Jeung, Byung-Mo Cho, Nam Kim
A surface-normal input/output volume holographic grating coupler (VHGC) operating at 1550nm wavelength region by using a 10μm-thick DuPont photopolymer film is designed and fabricated. The angular and wavelength responses of the input/output ... [J. Opt. Soc. Korea 16, 17-21 (2012)]

Variable-focus Liquid Lens Based on a Laterally-integrated Thermopneumatic Actuator

June-Kyoo Lee — Sun, 25 Mar 2012 00:00:00 EST

June-Kyoo Lee, Kyung-Woo Park, Geun-Bae Lim, Hak-Rin Kim, Seong-Ho Kong
We report a focal-length tunable liquid lens based on thermopneumatically driven fluidic pressure. The fluidic pressure is generated by deformation of an elastomeric diaphragm induced by thermopneumaticity from a laterally integrated microheater sealed within an air chamber. The pressure is ... [J. Opt. Soc. Korea 16, 22-28 (2012)]

Elemental Image Generation Method with the Correction of Mismatch Error by Sub-pixel Sampling between Lens and Pixel in Integral Imaging

Jong-Hyun Kim — Sun, 25 Mar 2012 00:00:00 EST

Jong-Hyun Kim, Jae-Hyun Jung, Ji-Soo Hong, Ji-Woon Yeom, Byoung-Ho Lee
We propose a subpixel scale elemental image generation method to correct the errors created by finite display pixel size in integral imaging. In this paper, two errors are mainly discussed: pickup-and-display mismatch error and mismatch error between pixel pitch and lens pitch. The proposed method ... [J. Opt. Soc. Korea 16, 29-35 (2012)]

A Study of the Optical Properties of Cosmetics Measured by Polarized Light Goniophotometry

Sun-Kyung Choi — Sun, 25 Mar 2012 00:00:00 EST

Sun-Kyung Choi, Young-Jun Yang, Kyung-Nam Kim, Jae-Wook Choi, Yeong-Jin Choi, Sang-Hoon Han
Polymethylmethacrylate powders are commonly used to improve the spreadability and blurring effects of powder foundation cosmetics. In this study, the opacity and haze effect of four types of polymethylmethacrylate powders and their 10wt% powder ... [J. Opt. Soc. Korea 16, 36-41 (2012)]

In Situ Fluorescence Optical Detection Using a Digital Micromirror Device (DMD) for 3D Cell-based Assays

Jong-Ryul Choi — Sun, 25 Mar 2012 00:00:00 EST

Jong-Ryul Choi, Kyu-Jung Kim, Dong-Hyun Kim
We have developed a fluorescence optical detection system using a digital micromirror device (DMD) for monitoring 3D cell culture matrices in situ. Full 3D imaging with fast scanning speed was implemented by the combined action of a DMD and a ... [J. Opt. Soc. Korea 16, 42-46 (2012)]

Electro-optic Electric Field Sensor Utilizing Ti:LiNbO_3 Symmetric Mach-Zehnder Interferometers

Hong-Sik Jung — Sun, 25 Mar 2012 00:00:00 EST

Hong-Sik Jung
The use of a Ti:LiNbO_3 symmetric Mach-Zehnder interferometric intensity modulator with a push-pull lumped electrode and a plate-type probe antenna to measure an electric field strength is described. The modulator has a small device size of ... [J. Opt. Soc. Korea 16, 47-52 (2012)]

Development and Characterization of a 400-W Slab-type Nd:YAG Gain Module

Yong-Ho Cha — Sun, 25 Mar 2012 00:00:00 EST

Yong-Ho Cha, Sung-Man Lee, Gwon Lim, Sung-Hoon Baik, Sung-Ok Kwon, Byung-Heon Cha, Jung-Hwan Lee, Eung-Cheol Kang
We have developed a slab-type Nd:YAG gain module based on the techniques of conduction cooling and end pumping. The Nd:YAG slab is end-capped on both ends by undoped pure YAG and is pumped through the end-caps by stacked arrays of laser diode bars. The slab's surfaces of total internal reflection ... [J. Opt. Soc. Korea 16, 53-56 (2012)]

Partial Least Squares-discriminant Analysis for the Prediction of Hemodynamic Changes Using Near Infrared Spectroscopy

Young-Wook Seo — Sun, 25 Mar 2012 00:00:00 EST

Young-Wook Seo, Seung-Duk Lee, Dal-Kwon Koh, Beop-Min Kim
Using continuous wave near-infrared spectroscopy, we measured time-resolved concentration changes of oxy-hemoglobin and deoxy-hemoglobin from the primary motor cortex following finger tapping tasks. These data were processed using partial least squares-discriminant analysis (PLS-DA) to develop a ... [J. Opt. Soc. Korea 16, 57-62 (2012)]

Optical Modeling for Polarization-dependent Optical Power Dissipation of Thin-film Organic Solar Cells at Oblique Incidence

Jung-Ho Kim — Sun, 25 Mar 2012 00:00:00 EST

Jung-Ho Kim, Sung-Yeop Jung, In-Kyung Jeong
We present the optical models and calculation results of thin-film organic solar cells (OSCs) at oblique incidence of light, using the transfer matrix method. The simple expression for the optical power dissipation is derived at oblique incidence for s- and p-polarized light. The spatial ... [J. Opt. Soc. Korea 16, 6-12 (2012)]

Dual Band Optical Window (DBW) for Use on an EO/IR Airborne Camera

Kwang-Woo Park — Sun, 25 Mar 2012 00:00:00 EST

Kwang-Woo Park, Sang-Yeong Park, Young-Soo Kim, Ki-Ho Kim, Young-Soo Choi
This paper presents a method to derive the theoretical requirements for the development of a 400 mm optical window that transmits dual-band wavelengths and had a stable structure. We also present design and fabrication results. Among the required ... [J. Opt. Soc. Korea 16, 63-69 (2012)]

Optimal Design of Dielectric-Filled Plasmonic Slot Waveguide with Genetic Algorithm

Dae-Keun Kim Jae-Hoon Jung — Sun, 25 Mar 2012 00:00:00 EST

Dae-Keun Kim, Jae-Hoon Jung
An optimization methodology for designing a dielectric-filled plasmonic slot waveguide is presented. The genetic algorithm combined with a rigorous analysis based on the finite element method is used to optimize a nano-scaled plasmonic slot waveguide to have high mode confinement and a long ... [J. Opt. Soc. Korea 16, 70-75 (2012)]

Thin Film Deposition of Tb_3Al_5O_312:Ce by Pulsed Laser Ablation and Effects of Low-temperature Post-annealing

Kang-Min Kim — Sun, 25 Mar 2012 00:00:00 EST

Kang-Min Kim, Jun-Ho Chung, Jeong-Ho Ryu
Tb_3Al_5O_312:Ce (TAG:Ce) thin films were successfully deposited by a pulsed laser ablation method on a quartz substrate, and low-temperature post-annealing effects on luminescent properties were investigated in detail. TAG:Ce thin films were ... [J. Opt. Soc. Korea 16, 76-79 (2012)]

Design and Development of an Ultralow Optical Loss Mirror Coating for Zerodur Substrate

Hyun-Ju Cho — Sun, 25 Mar 2012 00:00:00 EST

Hyun-Ju Cho, Jae-Cheul Lee, Sang-Hyun Lee
A high reflectance mirror, which has very low absorption and scattering loss, was coated onto a crystalline substrate by ion beam sputtering and then annealed at 45055 °C. We carefully selected the mirror coating material, and designed the ... [J. Opt. Soc. Korea 16, 80-84 (2012)]