| Vg Asst Prof Yoo Seong Woo
Visiting Assistant Professor
Division of Microelectronics
School of Electrical & Electronic Engineering
College of Engineering
Email: SEON.YOO@ntu.edu.sg
Phone: (+65)6592 7597
Office: S2.2-B2-52 |
| Education |
- PhD Gwangju Instit. of Science & Technology 2005
- MSc Gwangju Instit. of Science & Technology 2001
- BSc Hanyang University 1999
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| Biography |
| Yoo Seongwoo received his BSc from Hanyang university, Seoul, Korea, in 1999 as a Baeknam scholarship holder and subsequently his MSc and PhD from Gwangju Institute of Science and Technology, Gwangju, Korea, in 2001 and 2005, respectively for his study on specialty fiber design and fabrication. In 2004, he joined the Optoelectronic Research Centre (ORC), Univeristy of Southampton, UK, as a research assistant and, then as a post-doctoral research fellow in 2005. During his stay in the ORC, his research has centered on specialty fiber development for high power fiber lasers and amplifiers. He was involved in pioneering research topics including development of 10 kW Yb-doped fiber laser, visible fiber laser, Bi-doped fiber lasers, and multimode fiber amplifier for next generation telecommunication network. He also contributed to works on development of photodarkening free Yb-doped fibers, power scaling in Er-Yb doped fiber laser, and stimulate Brillouin scattering (SBS) suppression for power scaling in narrow linewidth fiber amplifiers. In 2011, he joined the school of Electrical and Electronic Engineering, Nanyang Technological Univerisity. |
| Research Interests |
My current research interests are towards development of rare-earth doped fibers suitable for kW level cw fiber lasers and MW level pulsed fiber lasers, and novel fibers to open up new emission or communication bands. The research topics will include
- Core scaling in large mode area fiber design
Designing novel fiber structure to accommodate high intensity in a fiber core and offer high threshold for undesired optical nonlinear processes
- Rare-earth doped fibers for 1.5 and 2 um band
Optimizing design of Er-Yb, Er, or Tm doped fibers for efficient fiber lasers under various pumping approaches
- Bismuth-doped fiber amplifiers in 1300 nm band
Investigating various fabrication routes and identifying proper valence state of Bi ions to enhance optical gain
- SBS suppression in narrow linewidth high power fiber amplifiers
Implementing novel design in fiber fabrication, manipulating transversal and longitudinal acoustic velocity, and modifying fiber fabrication system
- Multi-mode fiber amplifier
Designing fiber structure to provide equivalent modal gain in all supported modes to serve next generation optical communication back |
| Research Grant |
- A*STAR Science and Engineering Research Council (2012-2015) [by A*STAR Science & Engineering Research Council (SERC)]
- Defence Science Organisation National Laboratories (2012-2016) [by MINDEF - DSO National Laboratories]
- NTU Internal Funding - EEE (2013-2014) [by School of Electrical and Electronic Engineering]
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| Current Projects |
- Advanced Optics in Engineering Programme- Fibre Drawing Facility
- Advanced Photonics Technologies for Next Optical Diagnostic Imaging
- Development of High Performance Large Mode Area Fibres
- In-country Fibre Capability Buildup
| Selected Publications | - S. Yoo, A. Webb, T. M. Smith, R. Standish, and J. K. Sahu. (2013). 5.4 W cladding-pumped Nd:YAG silica fiber laser. CLEO (pp. CM2N).
- J. Ji, S. Yoo, P. Shum and J. Nilsson. (2012). Minimizing quantum-defect heating in thulium-doped silica fiber amplifiers by tandem-pumping. Photonics Global Conference 2012 (pp. P1-18).
- N. Li, S. Yoo, J. Xue, X. Yu and P. Shum. (2012). Measuring photodarkening from ytterbium-doped fiber amplifier at 1064 nm wavelength emission. Photonics Global Conference (pp. P2-02).
- J. L. Lim, D. J. J. Hu, D. Cui, S. Yoo, P. Shum and W. Loh. (2012). Characteristics of suspended-core fiber interferometer: Modal analysis. Photonics Global Cnoference (pp. P3-22).
- S. Yoo, A. S. Webb, R. J. Standish, T. C. May-Smith, and J. K. Sahu. (2012). Q-switched neodymium-doped Y3Al5O12 based silica fiber laser. Optics Letters, 37, 2181.
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