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  1. No Access

    Article

    Study of Crystallinity in μc-Si:H Films Deposited by Cat-CVD for Thin Film Solar Cell Applications

    The crystallinity of the hydrogenated microcrystalline silicon (μc-Si:H) film was known to influence the solar cell efficiency greatly. Also hydrogen was found to play a critical role in controlling the crysta...

    C. H. Hsu, Y. P. Hsu, F. H. Yao, Y. T. Huang, C. C. Tsai… in MRS Online Proceedings Library (2021)

  2. No Access

    Article

    400 Mbit/s OOK green-LED visible light communication with low illumination

    In this work, we propose and demonstrate a LED-based visible light communication (VLC) system. Here, an analog front end (AFE) circuit with optimal equalization design is investigated to enhance the modulation...

    C. H. Yeh, C. W. Chow, C. S. Gu, B. S. Guo, Y. J. Chang… in Optical and Quantum Electronics (2018)

  3. No Access

    Article

    Magnetic Field Resonance and Pressure Effects on Epitaxial Thin Film Deposition and In Situ Plasma Diagnostics

    This study demonstrated the use of quadrupole mass spectrometry and optical emission spectrometry in diagnosing the plasma in the electron cyclotron resonance chemical vapor deposition (ECRCVD) process. The ef...

    C. R. Yang, C. H. Yeh, L. C. Hu, T. C. Wei… in Plasma Chemistry and Plasma Processing (2018)

  4. No Access

    Article

    Use of RSOA-transmitter for OFDM colorless WDM-PON communication

    In this investigation, we propose and demonstrate a wavelength-tunable self-seeding 1.2 GHz reflective semiconductor optical amplifier (RSOA)-based transmitter in each optical network unit for colorless wavele...

    C. H. Yeh, C. W. Chow, J. Y. Sung, Y. F. Wu in Optical and Quantum Electronics (2016)

  5. No Access

    Article

    Thermoelectric Performance of n-Type Bi2Te3/Cu Composites Fabricated by Nanoparticle Decoration and Spark Plasma Sintering

    Dense n-type Bi2Te3/Cu composites were prepared using Cu-based acetate decomposition and spark plasma sintering at 673 K and 50 MPa. The effects of Cu addition into ball-milled Bi2Te3 on the thermoelectric proper...

    F. R. Sie, C. H. Kuo, C. S. Hwang, Y. W. Chou, C. H. Yeh… in Journal of Electronic Materials (2016)

  6. No Access

    Article

    Optical filter analyses for demultiplexing all-optical OFDM transmission systems

    Using a single optical filter to demultiplex the all-optical orthogonal frequency-division multiplexing (OFDM) system was regarded as cost-effective and simple. Here, an all-optical OFDM signal demultiplexer u...

    J. Y. Sung, C. W. Hsu, H. Q. Su, C. W. Chow, C. H. Yeh in Optical and Quantum Electronics (2015)

  7. No Access

    Article

    Investigation of no analogue-equalization and blue filter for 185 Mbps phosphor-LED wireless communication

    In this demonstration, we first propose an optimal analogue front end circuit without employing pre-equalization (series peaking) to increase the modulation bandwidth of phosphor-LED in visible light communica...

    C. H. Yeh, C. W. Chow, Y. L. Liu, H. Y. Chen, Y. Liu… in Optical and Quantum Electronics (2015)

  8. No Access

    Article

    Thermoelectric Performance of Bi0.5Sb1.5Te3/Sb Composites Fabricated by Electroless Plating and Spark Plasma Sintering

    This study reports semi-metal/semi-conductor composites with enhanced thermoelectric performance that results from interface effects between Sb clusters and the Bi0.5Sb1.5Te3 matrix. The Sb clusters were disperse...

    F. R. Sie, C. S. Hwang, C. H. Kuo, Y. W. Chou, C. H. Yeh… in Journal of Electronic Materials (2015)

  9. No Access

    Article

    Effect of Sintering Temperature on Thermoelectric Properties of PbTe/Ag Composites Fabricated by Chemical Plating and Spark Plasma Sintering

    PbTe/Ag composite powders were synthesized by a chemical plating method and then compacted by spark plasma sintering (SPS) at 573 K to 673 K and 50 MPa. The effects of the sintering temperature on the thermoel...

    F. R. Sie, C. S. Hwang, Y. H. Tang, C. H. Kuo… in Journal of Electronic Materials (2015)

  10. No Access

    Chapter and Conference Paper

    Young’s Modulus Estimation of Soft Tissues by Video Tactile Pneumatic Sensor

    An indentation technique is one of effective methods to determine the elastic modulus of materials using information about contact geometry, indenter shape and applied load. This paper presents a device and a ...

    M. M. Gubenko, I. G. Goryacheva… in 1st Global Conference on Biomedical Engine… (2015)

  11. No Access

    Chapter and Conference Paper

    Pneumatic Video Tactile Sensor for Laparoscopic Surgery

    The main purpose of the study is design of the innovative tool for determination of mechanical properties of soft biological tissues during minimally invasive surgical operations. This applied problem is close...

    M. Dosaev, I. Goryacheva, F.-C. Su… in New Trends in Mechanism and Machine Science (2015)

  12. No Access

    Article

    Demonstration of using multi-band 16-QAM OFDM modulation with direct-detection in 10 GHz bandwidth for 37.3-Gb/s PON

    We propose and experimentally demonstrate a 37.3 Gb/s passive optical network using four-band orthogonal-frequency-division-multiplexing (OFDM) channels within 10 GHz bandwidth. Here, the required sampling rat...

    C. H. Yeh, H. Y. Chen, C. W. Chow, J. Y. Sung in Photonic Network Communications (2014)

  13. No Access

    Article

    Polarity Effect in a Sn3Ag0.5Cu/Bismuth Telluride Thermoelectric System

    This study investigates electromigration in Bi2Te3 thermoelectric (TE) material systems and the effectiveness of the diffusion barrier under current. The Peltier effect on the interfacial reaction was decoupled f...

    P. Y. Chien, C. H. Yeh, H. H. Hsu, Albert T. Wu in Journal of Electronic Materials (2014)

  14. No Access

    Article

    Utilizing 1.2 GHz bandwidth reflective semiconductor optical amplifier for 1.25–10 Gbit/s for colourless and cooler-less wavelength conversion

    In this investigation, we propose and investigate a wavelength converter by using a cost-effective and uncooled TO-can package reflective semiconductor optical amplifier with

    C. H. Yeh, C. W. Chow, Y. F. Wu, F. Y. Shih in Optical and Quantum Electronics (2013)

  15. No Access

    Article

    AC-based phosphor LED visible light communication by utilizing novel signal modulation

    We propose and demonstrate a new AC-light emitting diode based visible light communication system, in which the message signal is up-converted to 400 kHz frequency band and combine with the 60 Hz AC-power from...

    Y. F. Liu, C. H. Yeh, C. W. Chow, Y. L. Liu in Optical and Quantum Electronics (2013)

  16. No Access

    Article

    Anterior ilioinguinal incision for drainage of high-located perianal abscess

    Most perianal abscesses originate from infected anal glands at the base of the anal crypts. Most abscesses below are usually drained through perianal incision and can be treated successfully. However, when per...

    K.-T. Peng, M.-C. Hsieh, W.-H. Hsu, Y.-Y. Li, C.-H. Yeh in Techniques in Coloproctology (2013)

  17. No Access

    Article

    Simple digital FIR equalizer design for improving the phosphor LED modulation bandwidth in visible light communication

    We propose and demonstrate a simple digital post-equalization technique to improve the bandwidth-limitation of light-emitting-diode (LED) visible-light-communication (VLC) channel. The design of finite-impulse...

    C. H. Yeh, C. W. Chow, Y. F. Liu, P. Y. Huang in Optical and Quantum Electronics (2013)

  18. No Access

    Article

    Semiconductor optical amplifier-based laser with 25 km long cavity length utilizing sagnac fiber ring structure

    In the investigation, we propose and demonstrate a Sagnac ring based fiber laser structure using a semiconductor optical amplifier (SOA) to act as a gain medium with short to long fiber cavity lengths for wave...

    C. H. Yeh, C. W. Chow in Laser Physics (2012)

  19. No Access

    Article

    Ultra-broadband amplified spontaneous emission source by using heterogeneous optical amplifier

    In this work, we propose and experimentally investigate an ultra-broadband amplified spontaneous emission (ASE) light source with 113.8 nm bandwidth (1446.2 to 1560.0 nm) by using a cascaded two-stage optical ...

    C. H. Yeh, C. W. Chow, J. H. Chen, S. S. Lu in Laser Physics (2012)

  20. No Access

    Article

    Dual-reflected-structure erbium-doped fiber laser in single-longitudinal-mode for wavelength-tuning

    In this work, we propose and demonstrate a dual-reflected-structure erbium-doped fiber (EDF) laser with a linear cavity using a passive saturable-absorbor-based (SAB) filter to achieve single-longitudinal-mode...

    C. H. Yeh, C. W. Chow, J. Y. Sung, S. S. Lu, Y. F. Wu in Laser Physics (2012)

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