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5월 17 일 ( 목)
efficiency, high modulation bandwidth, and
high SMSR as well as high-temperature
operation.
TP-29 광로직게이트구현을위한차동구조
수직공진구조 광싸이리스터
최운경, 김두근, 오금윤, 문연태, 김도균,
최영
완( 중앙대), 이석, 우덕하(KIST)
Latching optical switches and optical logic
gates with AND or OR, and the INVERT
functionality are demonstrated, for the first
time, by the monolithic integration of a
differential typed vertical cavity laser with
depleted optical thyristor (VCL-DOT). All
kind of logic functions (AND, OR, NAND,
NOR, and INVERT) are experimentally demonstrated
using a differential switching operation
scheme changing the intensity of a reference
input beam without any changes of electrical
circuits.
TP-30 AWG를 이용한 브래그 격자 스트레인
센서의반사파장측정방법
서준규, 김경조, 오민철, 이상민, 김영제,
김명
현부산대 ( )
AWGs (arrayed waveguide grating) have been
utilized to interrogate the reflection wavelength
of the fiber-optic Bragg reflection
strain sensors. The strain applied to the
FBG (fiber Bragg grating) affects the Bragg
reflection wavelength peak, which can be
translated into the optical output power of
a certain output channel of the AWG. The
movement of reflection peak with the applied
strain is observed by optical spectrum
analyzer. The strain in calculated by the
centroid fit of the output power values
detected from each channel of the AWG.
TP-31 장주기 광섬유격자의 고차 클래딩 모드
를 이용한 초광대역 필터의 구현
김명진, 정용민, 김복현, 한원택, 이병하(GIST)
We demonstrated a broad bandwidth optical
filter using long-period fiber gratings (LPGs),
which have wide dynamic range. The bandwidth
of the output spectrum was reached
to ~ 200 nm and the insertion loss was ~
5 dB. The optimal longitudinal offset distance
between two LPGs was 8 cm.
TP-32 주기적으로 분극 반전된 TI:LiNbO 3 도
파로를 이용한 2차 조화파 Green Laser 제작
손근식, 이상신( 광운대), 이형만, 양우석,
김우
경, 이한영( 전자부품연구원), 권순우(
성균관
대), 송명근( 한국항공대)
We report periodic domain inversion by
electric-field poling in Ti:LiNbO 3 waveguides
for Quasi-phase-matching(QPM) Second
harmonic generation(SHG) applications. Periodically
poled lithium niobate(PPLN) is
known to be one of the most promising
candidates for wavelength conversion applications.
Compact, light and low power
consumed high power Visible or UV wavelength
laser could be commercialized in the
near future.
TP-33 나노임프린트 리소그래피에 의해 제작
된 폴리머 광결정 슈퍼프리즘
최춘기, 한영탁( 한국전자통신연구원)
In this work, we have demonstrated a
2-dimensional polymer photonic crystal
(PPhC) super-prism fabricated by using
thermal-based nanoimprint lithography. The
polymer materials with a low index contrast,
polystylene and Teflon were used as a
waveguide core and clad, respectively. The
design and fabrication process of 2-D
polymer photonic crystal super-prism was
described.
TP-34 광 주입 잠금에 의한 신호 변조된 1.5
μm VCSEL의 편광 스위칭
정규현, 이승훈, 김경헌, 이민희( 인하대),
안준
태, 권오균( 한국전자통신연구원), 송국현(
기
술표준원), 노정래, 유병수(( 주) 레이칸)
We report the measured results on the
polarization switching dynamics of a 1.5 μm
wavelength single-mode vertical cavity surface
emitting laser (VCSEL) under external optical
injection control. Controlling the polarization
direction and detuning the wavelength of
the external injection laser beam causes
dynamical instability and polarization switching
of the VCSEL. A well-defined polarization
switching has been demonstrated
with the 1.5 μm VCSEL modulated at 1 MHz
with a RF pulse amplitude of 0.5 V and with
a DC driving current of 1.9 mA under an
external optical injection of – 16.56 dBm
power.
TP-35 정전내압특성 향상을 위한 플로팅가드
링을 내장한 GaN 발광다이오드
이응신( 한양대), 심종인( 한양대), 황성민(
한양
대), 장동현( 한양대)
We investigaed highly reliable GaN_based
light emitting diodes with the floating guardring
in order to improve the electrostatic
dischare problem. The floating guard-ring
(FGR) was introduced between p- and n-
electrodes. This greatly waken the peak
electric field intensity at the local position
of around p-n junction, which in turn
improves the maximum ESD voltage without
the breakdown. We experimentally observed
that LEDs with FGR showed about 5 times
larger ESD voltages compared to those of
LEDs without FGR
TP-36 엠보싱 공정을 이용한 AWG 제작
최철현, 이민우, 성준호, 김보순, 임해동,
이승
걸, 박세근, 이일항, 오범환( 인하대)
We fabricated an arrayed waveguide grating
(AWG) demultiplexer using UV embossing
process for optical fiber communication
systems and photonic integrated circuits.
UV curable polymers (ZPU 12-47 and ZPU
12-45) were used as the core and upper
cladding layers. The polydimethylsiloxane
(PDMS) mold used for the embossing
process is manufactured by a photoresist
structure formed on a silicon wafer. We tried
the embossing onto a fused silica glass
using the PDMS mold. The upper cladding
layer was coated over the patterned structure.
The residual layer produced after an embossingprocesswasadjustedbythevolume
of polymer droplet. The embossing technique
will have the potential for broad applications
in fabrication of photonic devices.
TP-37 두장의간섭이미지를이용한전역광
결맞음 단층 촬영기법
최우준, 나지훈, 유선영, 박관섭, 민은정,
이병
하(GIST)
Image-restoration method in full-field optical
coherence tomography (FF-OCT) using two
interference fringe-images was demonstrated.
By using both the original and the phaseshifted
images, we could remove DC noise
and obtained demodulated signals (envelope
signals) from interference fringe-images.
With the proposed image-restoration method,
we demonstrated en-face imaging performance
of the implemented FF-OCT system
by presenting a piece of grape.
TP-38 CCD 이미지 센서 드라이버 제작 및 이
를 이용한 Fourier Domain 방식 광계측 시스템
구현
김훈섭, 이정렬, 엄진섭( 강원대)
This paper presents Fourier-Domain optical
measurement system using self-fabricated
CCD sensor driver. The light source is a high
brightness white LED and the detector is a
2048 array typed CCD image sensor. We
have fabricated the CCD sensor driver to
generate four pulse signals, which are the
CCD-driving pulses. Using this Fourier
Domain optical measurement system, the
distance value between the reference mirror
and the sample mirror can be obtained
successfully.
TP-39 금속 박막을 포함하는 1차원의 4층 구
조에서의 분산관계와 이를 통한 표면 플라즈몬
공명 현상 해석과 광파 결합
임용준, 김세윤, 이병호( 서울대)
We numerically solve the dispersion relation
through Kuhn algorithm in the semi-infinite
dielectric-metal structure, 3-layered media
and 4-layered media comprising one metallic
layer accompanying with surface plasmon
resonance. By finding out dispersion relation
and by using TMM (transfer matrix method),
we explain coupling of the incident light in the
target media based on the Kretschmman’s
ATR (attenuated total reflection) configuration.
TP-40 원거리-장에서의 표면 플라즈몬-폴라
리톤 관찰
설강희, 윤재웅, 송석호( 한양대)
As scaling down of the optical devices,
waveguides based on the surface plasmons
attract more attention. Also It becomes
more important in practical meaning to
observe the propagation of surface plasmon
polaritons directly in microscopic scale.
Here we demonstrated possibility of direct
far-field observation of the surface plasmonpolariton
modes which have not originally
any leakage radiation.
TP-41 홀로그램 리소그래피 방법을 이용한 2
차원광결정구조형성
김선훈, 김태언, 양학, 김효진, 김상택, 기현철,
양명학, 김회종(KOPTI)
Photonic crystals can reduce the dimensions
of optical devices and add new functionalities
to photonics integrated circuits. We developed
a procedure to fabricate twodimensional
periodic photonic crystal structure
with hologram lithography. The photonic
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