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Dr Duk-Yong Choi

Position: Research Fellow Qualification: Bachelor of Science, Inorganic Materials Science and Engineering(Seoul National University (SNU), SOUTH KOREA); Master of Science, Inorganic Materials Science and Engineering (Seoul National University (SNU), SOUTH KOREA); Ph.D, Inorganic Materials Science and Engineering (Seoul National University (SNU), SOUTH KOREA) Address: Laser Physics Centre, RSPhysSE, Australian National University, Canberra, ACT0200 Australia Office: Room J3-14, John Carver Building, 58C Phone: +61 2 6125 9279 Fax: +61 2 6125 0029 Email: dyc111@rsphysse.anu.edu.au

Research Interests and Expertise:

Dr Duk-Yong Choi is a reseach fellow at laser physics centre in ANU. He is doing CUDOS (Centre for Ultra-High Bandwidth Devices in Optical System) program since 2005. In this program his role is to develop the fabrication process of nonlinear optic devices utilizing chalcogenide films and to study the materials properties-structural, optical and electrical. Before joining the team, he worked at Samsung electronics for 6 years as a researcher. He got his PhD at 1998 from Materials science and engineering in Seoul national university in Korea. His current research interest is the characterization of optical material and fabrication of relevant devices.

Dr Duk-Yong Choi CV can be download from this link

Current Projects and Collaborations:

• CUDOS (Centre for Ultrahigh-bandwidth Devices for Optical Systems) is a consortium of five Universities funded under the Australian Research Council's Centres of Excellence Program
• CUDOS goal is to achieve ultrahigh-speed all-optical signal processing on a single photonic chip.
  • The end point is the development of micron-scale photonic components incorporating nonlinear photonics processes.
  • Programs extends from fundamental theory; materials science; device fabrication and testing in conditions relevant to future telecommunication networks (160Gb/s)
• These all-optical signal processors will be the key enabling technology for the next generation of ultrahigh bandwidth optical communication systems.

Research area links: Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS); Optical Device Fabrication ;

Selected Publications:

The articles are Copyright © by the respective publishers, and may be downloaded for personal use only. Any other use requires prior permission of the author and the respective publisher.

Lamont, M.R.E.; Ta'eed, V.G.; Roelens, M.A.F.; Moss,D.J.; Eggleton, B.J.; Choi, D.-Y.; Madden, S.; Luther-Davies, B.; Error-free wavelength conversion via cross-phase modulation in 5cm of As2S3 chalcogenide glass rib waveguide. (2007), Electronics Letters 43, 945 – 947. (PDF)

D. Y. Choi, S. Madden, A. Rode, R. P. Wang, B. Luther-Davies , N. J. Baker, and B. J. Eggleton, Integrated shadow mask for sampled Bragg gratings in chalcogenide (As2S3) planar waveguides, Optics Express 15(12): 7708-7712 (2007). (PDF)

Ta'eed, V. G., N. J. Baker, L.B. Fu, K. Finsterbusch, M. R. E. Lamont, D. J. Moss, H. C. Nguyen, B. J. Eggleton, D. Y. Choi, S. Madden and B. Luther-Davies (2007). Ultrafast all-optical chalcogenide glass photonic circuits. Optics Express 15(15): 9205-9221. (PDF)

D. Y. Choi, S. Madden, A. Rode, R. Wang, and B. Luther-Davies, Fabrication of low loss Ge33As12Se55 (AMTIR-1) planar waveguides, Applied Physics Letters 91(1), 011115 (2007). (PDF)

R. P. Wang, D. Y. Choi, A. V. Rode, S. J. Madden, and B. Luther-Davies, Rebonding of Se to As and Ge in Ge33As12Se55 films upon thermal annealing: Evidence from x-ray photoelectron spectra investigations. Journal of Applied Physics 101(11)113517 (2007). (PDF)

Finsterbusch, K., N. J. Baker, V. G. Ta'eed, B. J. Eggleton, D. Y. Choi, S. Madden and B. Luther-Davies (2007). Higher-order mode grating devices in As2S3 chalcogenide glass rib waveguides. Journal of the Optical Society of America B-Optical Physics 24(6): 1283-1290. (PDF)

D. Y. Choi, S. Madden, R. P. Wang, A. Rode, M. Krolikowska, and B. Luther-Davies, Nano-phase separation of arsenic tri-sulphide (As2S3) film and its effect on plasma etching, Journal of Non-Crystalline Solids 353(8-10): 953-955 (2007). (PDF)

Baker, N. J., H. W. Lee, I. C. M. Littler, C. M. de Sterke, B. J. Eggleton, D. Y. Choi, S. Madden and B. Luther-Davies (2006). Sampled Bragg gratings in chalcogenide (As2S3) rib-waveguides. Optics Express 14(20): 9451-9459. (PDF)

Finsterbusch, K., N. Baker, et al. (2006). Long-period gratings in chalcogenide (As2S3) rib waveguides. Electronics Letters 42(19): 1094-1095 (PDF)

Ta'eed, V. G., M. R. E. Lamont,D. J. Moss, B. J. Eggleton, D. Y. Choi, S. Madden and B. Luther-Davies (2006). All optical wavelength conversion via cross phase modulation in chalcogenide glass rib waveguides. Optics Express 14(23): 11242-11247. (PDF)

Choi, D.-Y., J.-H. Lee, et al. (2004). Formation of plasma induced surface damage in silica glass etching for optical waveguides. J. Appl. Phys. 95: 8400-8406. (PDF)

Choi, D.-Y. and S.-J. Chung (1998). Annealing behaviors of lattice misfit in YIG and La doped YIG films on GGG substrates by LPE method. J. Cryst. Growth 191: 754-759 (PDF)