Among several kinds of high-speed access network technologies, wavelength-division-multiplexing passive optical (WDM-PON) is the most suitable for increasing bandwidth requirements in future. In this paper, we propose overlay WDM-PON which uses multicast and virtual local area (VLAN) technologies integration services such as Internet surfing, voice-over protocol (VoIP) video on demand (VoD). addition, shared channel based performance evaluations demonstrate operations advantages using OPNET

Giant magnetoresistance (GMR) signals and the magneto-optic Kerr effect (MOKE) are combined to investigate asymmetric domain wall (DW) motion in a GMR spin-valve stripe consisting of wire circular ring. In propagation tail-to-tail DW, left-hand side, top-half ring, bottom-half right-hand side reversed sequence. However, head-to-head bottom half-ring, ring switched addition, critical current density for DW depinning shows behavior. For depinning, negative pulses lower than that positive...

This paper presents a 130 GHz differential common-source architecture power amplifier using 40-nm CMOS process. To ensure proper matching between the stages, except for output, transformer was used to achieve conjugate matching. For balun match it maximum output load impedance. On-wafer tests showed that gain of 22.5 dB at GHz, 3-dB bandwidth 15 and saturation 7.7 dBm. At supply voltage 1 V, consumption 81 mW, PAE 7.1 % saturated power. The chip area, excluding pads, 388 μm×168 μm.

We propose a new PON architecture where both access and local networking services are enabled using wavelength-switchable transceivers. Simulation shows that available bandwidth is nearly doubled with fast wavelength switching delay drastically improved.

We present the real-time 3D traffic simulator RASY (Real-time autonomous vehicle developed by Yonsei University), for modeling and analysis of various congestion scenarios, including interactions among human-driven vehicles. Vehicles with different control models can be generated to investigate effects environment on flow during simulations congestion. A data log simulation exported post-processing analysis. Following an under congested conditions, we found that a faster reaction time...

In this paper, the program and erase characteristics of a two-transistor (2T) SONOS nonvolatile memory (NVM) cell have been described by using one-shot simulations device simulations. addition, mismatched charge distribution between electrons holes has verified through measurements The (P/E) operations are performed channel hot electron injection (CHEI) band to tunneling induced hole (BTBT-HHI), respectively. Because complete operation can't be achieved with longer control gate (CG) lengths,...

In this paper, an embedded 2T SONOS nonvolatile memory structure has been proposed for NVM cell in 90nm standard HVCMOS process. This can be fabricated by several steps such as ONO formation, junction implant, removal films, those are non-critical processes and masks. The is operated CHEI programming BTBT-HHI erasing. confirmed with 64kB test chip, program erase operation, cycling, data retention. With wide window good reliability, the medium density memory.

The novel select gate lateral coupling (SGLC) cell has a single poly structure and operates using between the floating (FG) (SG) without additional processes on base platform. In this paper, we have fabricated pure logic CMOS processed SGLC for first time compared it with an HVCMOS cell. Because of thinner oxide, process lower value than that However, shows higher current performance having thicker oxide. Thanks to inverse relationship ratio current, back bias effect, gives comparable in...

In this paper, we propose a method for measuring the third-order intermodulation distortion (IMD3) components of circuits in D-band (110~170 GHz) on wafers. Two independent signal sources were combined using directional coupler to generate two-tone signal. Frequency downconversion mixers and attenuators used minimize impact setup IMD3 measurements device under test. The powers both fundamental frequency prototype power amplifier chip measured which enhanced reliability by comparing with...

ABSTRACT 수종의NiTi 전동파일단면형태비교및pecking motion의사용방법이피로파절에미치는영향 김재관 1 ∙금기연 2 ∙김의성 * 연세대학교치과대학보존학교실, 서울대학교치의학대학원보존학교실 COMPARATIVE STUDY ON MORPHOLOGY OF CROSS-SECTION AND CYCLIC FATIGUE TEST WITH DIFFERENT ROTARY NITI FILES HANDLING METHODS Jae-Gwan Kim , Kee-Yeon Kum Eui-Seong Department of Conservative Dentistry, Yonsei University, Dental Research Institute, Seoul National University There are various factors affecting the fracture NiTi rotary files. This study was performed to evaluatethe...

In order to solve the differentiated service problem in optical burst switching (OBS) networks, we propose a dynamic fiber delay line (FDL) bank partitioning algorithm, which divides FDL into several groups, using feed-forward output buffering architecture. analysis, three classes and groups are considered for traffic FDL, respectively, each group is assigned class. This paper shows that loss differentiation OBS networks easily accomplished Poisson environments when our algorithm adopted.

In this paper, we propose a dynamic bandwidth allocation in wavelength division multiplexing based passive optical network (WDM-PON) with loop-back scheme. A approach is to replace the transmitter ONTs reflective modulator, which uses part of downstream light as source for upstream. We can utilize scheme share cost components PON. present algorithm maximize efficiency.

DOI: 10.1049/ic:20070067 ISBN: 978-3-8007-3042-1 Location: Berlin, Germany Conference date: 16-20 Sept. 2007 Format: PDF We propose a mini slot transmission scheme for use in passive optical network where each customer can be switched to access or local mode dynamically. Simulation results show that throughput and delay are dependent on the speed of switching. (2 pages) Inspec keywords: networks; fibre LAN; internetworking Subjects: Computer communications; Optical Local area networks

Free vibration characteristics of an initially stressed CD/DVD disk, which is designed for increasing critical speeds current optical disks, are analyzed using the Rayleigh-Ritz technique based on variational formulations. Natural frequencies new disk depend membrane stresses caused by rotation as well residual imposed during cooling process injection molding. Critical calculated various initial patterns radial and circumferential stresses. Initially tensile increase natural all modes except...