Team Leader
Dr Thach Nguyen
Dr Thach Nguyen
Email: thach.nguyen@rmit.edu.au
RMIT University
Office location: 57.01.09
Biography: Dr. Thach Nguyen is a Senior Lecturer in the Electroninics & Telecommunications Discipline - School of Engineering and was an ARC APD fellow. He completed his PhD at RMIT University on highly efficient LiNbO3 modulators. His current research interests include integrated photonic devices and circuits, integrated photonic design methods, numerical methods for integrated photonics, and microwave photonics. He has created a number of integrated photonic design and simulation tools.
Journal Publications
Journal Publications
- Nguyen, T.G., Boes, A., Mitchell, A., “Lateral Leakage in Silicon Photonics: Theory, Applications, and Future Directions”, IEEE Journal of Selected Topics in Quantum Electronics, 26 (2), art. no. 8805388, (2020). DOI: 10.1109/JSTQE.2019.2935315
- Tan, M., Mitchell, A., Moss, D.J., Xu, X., Corcoran, B., Wu, J., Boes, A., Nguyen, T.G., Chu, S.T., Little, B.E., Morandotti, R., “Microwave and RF Photonic Fractional Hilbert Transformer Based on a 50 GHz Kerr Micro-Comb”, Journal of Lightwave Technology, 37 (24), art. no. 8864019, pp. 6097-6104, (2019). DOI: 10.1109/JLT.2019.2946606
- Ren, G., Han, X., Nguyen, T.G., Khodasevych, I., Hamm, J.M., Hess, O., Tian, Y., Mitchell, A., “Asymmetric transmission of light in hybrid waveguide-integrated plasmonic crystals on a silicon-on-insulator platform”, Optics Letters, 44 (21), pp. 5378-5381, (2019). DOI: 10.1364/OL.44.005378
- Nguyen, T.G., Ren, G., Schoenhardt, S., Knoerzer, M., Boes, A., Mitchell, A., “Ridge Resonance in Silicon Photonics Harnessing Bound States in the Continuum”, Laser and Photonics Reviews, 13 (10), art. no. 1900035, (2019). DOI: 10.1002/lpor.201900035
- Liu, Y., Choudhary, A., Ren, G., Vu, K., Morrison, B., Casas-Bedoya, A., Nguyen, T.G., Choi, D.-Y., Ma, P., Mitchell, A., Madden, S.J., Marpaung, D., Eggleton, B.J., “Integration of Brillouin and passive circuits for enhanced radio-frequency photonic filtering”, APL Photonics, 4 (10), art. no. 106103, (2019). DOI: 10.1063/1.5113569
- Boes, A., Chang, L., Knoerzer, M., Nguyen, T.G., Peters, J.D., Bowers, J.E., Mitchell, A., “Improved second harmonic performance in periodically poled LNOI waveguides through engineering of lateral leakage”, Optics Express, 27 (17), pp. 23919-23928, (2019). DOI: 10.1364/OE.27.023919
- Knoerzer, M., Szydzik, C., Ren, G., Huertas, C.S., Palmer, S., Tang, P., Nguyen, T.G., Bui, L., Boes, A., Mitchell, A., “Optical frequency comb based system for photonic refractive index sensor interrogation”, Optics Express, 27 (15), pp. 21532-21545, (2019). DOI: 10.1364/OE.27.021532
- Xu, X., Tan, M., Wu, J., Nguyen, T.G., Chu, S.T., Little, B.E., Morandotti, R., Mitchell, A., Moss, D.J., “Advanced Adaptive Photonic RF Filters with 80 Taps Based on an Integrated Optical Micro-Comb Source”, Journal of Lightwave Technology, 37 (4), art. no. 8606970, pp. 1288-1295, (2019). DOI: 10.1109/JLT.2019.2892158
- Xu, X., Tan, M., Wu, J., Nguyen, T.G., Chu, S.T., Little, B.E., Morandotti, R., Mitchell, A., Moss, D.J., “High performance RF filters via bandwidth scaling with Kerr micro-combs”, APL Photonics, 4 (2), art. no. 026102, (2019). DOI: 10.1063/1.5080246
- Zarifi, A., Stiller, B., Merklein, M., Liu, Y., Morrison, B., Casas-Bedoya, A., Ren, G., Nguyen, T.G., Vu, K., Choi, D.-Y., Mitchell, A., Madden, S.J., Eggleton, B.J., “On-chip correlation-based Brillouin sensing: Design, experiment, and simulation”, Journal of the Optical Society of America B: Optical Physics, 36 (1), pp. 146-152, (2019). DOI: 10.1364/JOSAB.36.000146
- Xu, X., Wu, J., Jia, L., Tan, M., Nguyen, T.G., Chu, S.T., Little, B.E., Morandotti, R., Mitchell, A., Moss, D.J., “Continuously tunable orthogonally polarized RF optical single sideband generator based on micro-ring resonators”, Journal of Optics (United Kingdom), 20 (11), art. no. 115701, (2018). DOI: 10.1088/2040-8986/aae3fe
- Xu, X., Wu, J., Tan, M., Nguyen, T.G., Chu, S.T., Little, B.E., Morandotti, R., Mitchell, A., Moss, D.J., “Orthogonally Polarized RF Optical Single Sideband Generation and Dual-Channel Equalization Based on an Integrated Microring Resonator”, Journal of Lightwave Technology, 36 (20), art. no. 8425980, pp. 4808-4818, (2018). DOI: 10.1109/JLT.2018.2863704
- Xu, X., Wu, J., Nguyen, T.G., Chu, S.T., Little, B.E., Morandotti, R., Mitchell, A., Moss, D.J., “Broadband RF channelizer based on an integrated optical frequency kerr comb source”, Journal of Lightwave Technology, 36 (19), art. no. 8325287, pp. 4519-4526, (2018). DOI: 10.1109/JLT.2018.2819172
- Zarifi, A., Stiller, B., Merklein, M., Yang, L.I.U., Morrison, B., Casas-Bedoya, A., Ren, G., Nguyen, T.G., Khu, V.U., Choi, D.-Y., Mitchell, A., Madden, S.J., Eggleton, B.J., “Brillouin spectroscopy of a hybrid silicon-chalcogenide waveguide with geometrical variations”,Optics Letters, 43 (15), pp. 3493-3496, (2018). DOI: 10.1364/OL.43.003493
- Wu, J., Xu, X., Nguyen, T.G., Chu, S.T., Little, B.E., Morandotti, R., Mitchell, A., Moss, D.J., “RF Photonics: An Optical Microcombs' Perspective”, IEEE Journal of Selected Topics in Quantum Electronics, 24 (4), art. no. 6101020, (2018). DOI: 10.1109/JSTQE.2018.2805814
- Xu, X., Wu, J., Nguyen, T.G., Moein, T., Chu, S.T., Little, B.E., Morandotti, R., Mitchell, A., Moss, D.J., “Photonic microwave true time delays for phased array antennas using a 49 GhZ FSR integrated optical micro-comb source”, Photonics Research, 6 (5), pp. B30-B36, (2018). DOI: 10.1364/PRJ.6.000B30
- Xu, X., Wu, J., Nguyen, T.G., Shoeiby, M., Chu, S.T., Little, B.E., Morandotti, R., Mitchell, A., Moss, D.J., “Advanced RF and microwave functions based on an integrated optical frequency comb source”, Optics Express, 26 (3), pp. 2569-2583, (2018). DOI: 10.1364/OE.26.002569
- Solntsev, A.S., Liu, T., Boes, A., Nguyen, T.G., Wu, C.W., Setzpfandt, F., Mitchell, A., Neshev, D.N., Sukhorukov, A.A., “Towards on-chip photon-pair bell tests: Spatial pump filtering in a LiNbO 3 adiabatic coupler”, Applied Physics Letters, 111 (26), art. no. 261108, (2017). DOI: 10.1063/1.5008445
- Xu, X., Wu, J., Shoeiby, M., Nguyen, T.G., Chu, S.T., Little, B.E., Morandotti, R., Mitchell, A., Moss, D.J., “Reconfigurable broadband microwave photonic intensity differentiator based on an integrated optical frequency comb source”, APL Photonics, 2 (9), art. no. 096104, (2017). DOI: 10.1063/1.4989871
- Morrison, B., Bedoya, A.C., Ren, G., Vu, K., Liu, Y., Zarifi, A., Nguyen, T.G., Choi, D.-Y., Marpaung, D., Madden, S.J., Mitchell, A., Eggleton, B.J., “Compact Brillouin devices through hybrid integration on silicon”, Optica, 4 (8), pp. 847-854, (2017). DOI: 10.1364/OPTICA.4.000847
- Ren, G., Yudistira, D., Nguyen, T.G., Khodasevych, I., Schoenhardt, S., Berean, K.J., Hamm, J.M., Hess, O., Mitchell, A., “Experimental demonstration of two-dimensional hybrid waveguide-integrated plasmonic crystals on silicon-on-insulator platform”, APL Photonics, 2 (7), art. no. 071302, (2017). DOI: 10.1063/1.4995996
- Ng, V., Vaitkus, J.A., Chaboyer, Z.J., Nguyen, T., Dawes, J.M., Withford, M.J., Greentree, A.D., Steel, M.J., “Digital waveguide adiabatic passage part 2: Experiment”,Optics Express, 25 (3), pp. 2552-2559, (2017). DOI: 10.1364/OE.25.002552
- Liu, T., Solntsev, A.S., Boes, A., Nguyen, T., Will, C., Mitchell, A., Neshev, D.N., Sukhorukov, A.A., “Experimental demonstration of bidirectional light transfer in adiabatic waveguide structures”, Optics Letters, 41 (22), pp. 5278-5281, (2016). DOI: 10.1364/OL.41.005278
- Hope, A.P., Nguyen, T.G., Mitchell, A., Bogaerts, W., “Quantitative Analysis of TM Lateral Leakage in Foundry Fabricated Silicon Rib Waveguides”, IEEE Photonics Technology Letters, 28 (4), art. no. 7328266, pp. 493-496, (2016). DOI: 10.1109/LPT.2015.2500233
- Nguyen, T.G., Shoeiby, M., Chu, S.T., Little, B.E., Morandotti, R., Mitchell, A., Moss, D.J., “Integrated frequency comb source based Hilbert transformer for wideband microwave photonic phase analysis”,Optics Express, 23 (17), pp. 22087-22097, (2015). DOI: 10.1364/OE.23.022087
- Ma, P., Choi, D.-Y., Yu, Y., Yang, Z., Vu, K., Nguyen, T., Mitchell, A., Luther-Davies, B., Madden, S., “High Q factor chalcogenide ring resonators for cavity-enhanced MIR spectroscopic sensing”, Optics Express, 23 (15), pp. 19969-19979, (2015). DOI: 10.1364/OE.23.019969
- Hope, A.P., Nguyen, T.G., Mitchell, A., Greentree, A.D., “Adiabatic two-photon quantum gate operations using a long-range photonic bus”, Journal of Physics B: Atomic, Molecular and Optical Physics, 48 (5), art. no. 055503, (2015). DOI: 10.1088/0953-4075/48/5/055503
- Ako, T., Hope, A., Nguyen, T., Mitchell, A., Bogaerts, W., Neyts, K., Beeckman, J., “Electrically tuneable lateral leakage loss in liquid crystal clad shallow-etched silicon waveguides”, Optics Express, 23 (3), pp. 2846-2856, (2015). DOI: 10.1364/OE.23.002846
- Ren, G., Nguyen, T.G., Mitchell, A., “Gaussian beams on a silicon-on-insulator chip using integrated optical lenses”, IEEE Photonics Technology Letters, 26 (14), art. no. 6823140, pp. 1438-1441, (2014). DOI: 10.1109/LPT.2014.2326671
- Hope, A.P., Nguyen, T.G., Greentree, A.D., Mitchell, A., “Long-range coupling of silicon photonic waveguides using lateral leakage and adiabatic passage”, Optics Express, 21 (19), pp. 22705-22716, (2013). DOI: 10.1364/OE.21.022705
- Zeller, E., Devendra, G.C., Nguyen, T.G., Mitchell, A., “Fluid tunable transition from trapping to discrete diffraction in waveguide arrays”, Optics Express, 21 (15), pp. 18196-18206, (2013). DOI: 10.1364/OE.21.018196
- Dalvand, N., Nguyen, T.G., Koch, T.L., Mitchell, A., “Thin shallow-ridge silicon-on-insulator waveguide transitions and tapers”, IEEE Photonics Technology Letters, 25 (2), art. no. 6365228, pp. 163-166, (2013). DOI: 10.1109/LPT.2012.2230620
- Shah, C.M., Sriram, S., Bhaskaran, M., Nasabi, M., Nguyen, T.G., Rowe, W.S.T., Mitchell, A., “Elastomer-based pneumatic switch for radio frequency microdevices”, Journal of Microelectromechanical Systems, 21 (6), art. no. 6257404, pp. 1410-1417, (2012). DOI: 10.1109/JMEMS.2012.2208220
- Kayani, A.A., Khoshmanesh, K., Nguyen, T.G., Kostovski, G., Chrimes, A.F., Nasabi, M., Heller, D.A., Mitchell, A., Kalantar-zadeh, K., “Dynamic manipulation of modes in an optical waveguide using dielectrophoresis”, Electrophoresis, 33 (14), pp. 2075-2085, (2012). DOI: 10.1002/elps.201200083
- Crasto, T.D., Sivan, V., Nguyen, T.G., Mitchell, A., “Ti-free optical waveguiding regions produced by LiNbO3 etching during the indiffusion of Ti”, Optics Letters, 37 (4), pp. 572-574, (2012). DOI: 10.1364/OL.37.000572
- Dalvand, N., Nguyen, T.G., Tummidi, R.S., Koch, T.L., Mitchell, A., “Thin-ridge Silicon-on-Insulator waveguides with directional control of lateral leakage radiation”, Optics Express, 19 (6), pp. 5635-5643, (2011). DOI: 10.1364/OE.19.005635
- Sriram, S., Bhaskaran, M., Ahluwalia, R., Nguyen, T.G., Ng, N., Srolovitz, D.J., Kalantar-Zadeh, K., Mitchell, A., “Surface morphology induced localized electric field and piezoresponse enhancement in nanostructured thin films”, ACS Nano, 5 (2), pp. 1067-1072, (2011). DOI: 10.1021/nn103561u
- Nguyen, T.G., Tummidi, R.S., Koch, T.L., Mitchell, A., “Lateral leakage of TM-like mode in thin-ridge silicon-on-insulator bent waveguides and ring resonators”, Optics Express, 18 (7), pp. 7243-7252, (2010). DOI: 10.1364/OE.18.007243
- Nguyen, T.G., Tummidi, R.S., Koch, T.L., Mitchell, A., “Rigorous modeling of lateral leakage loss in SOI thin-ridge waveguides and couplers”, IEEE Photonics Technology Letters, 21 (7), pp. 486-488, (2009). DOI: 10.1109/LPT.2009.2013965
- Nguyen, T.G., Tummidi, R.S., Koch, T.L., Mitchell, A., “Lateral leakage in TM-like whispering gallery mode of thin-ridge silicon-on-insulator disk resonators”, Optics Letters, 34 (7), pp. 980-982, (2009). DOI: 10.1364/OL.34.000980
- Nguyen, T.G., Visagathilagar, Y.S., Mitchell, A., “Sensitivity analysis of process variations for resonantly enhanced modulators on LiNbO3”, Journal of Lightwave Technology, 24 (5), pp. 2199-2206, (2006). DOI: 10.1109/JLT.2006.872270
- Nguyen, T.G., Mitchell, A., Visagathilagar, Y.S., “Demonstration of a numerically optimized resonantly enhanced Mach-Zehnder modulator”, IEEE Photonics Technology Letters, 18 (3), pp. 454-456, (2006). DOI: 10.1109/LPT.2005.863174
- Nguyen, T.G., Mitchell, A., “Analysis of optical waveguides with multilayer dielectric coatings using plane wave expansion”, Journal of Lightwave Technology, 24 (1), pp. 635-642, (2006). DOI: 10.1109/JLT.2005.860158
- Visagathilagar, Y.S., Nguyen, T.G., Mitchell, A.A., Austin, M.W., “Systematic design approach for optimized resonantly enhanced mach-zehnder modulators”, Journal of Lightwave Technology, 24 (1), pp. 555-561, (2006). DOI: 10.1109/JLT.2005.860162
- Nguyen, T.G., Mitchell, A., Visagathilagar, Y.S., “Investigation of resonantly enhanced modulators on LiNbO3 using FEM and numerical optimization technique”, Journal of Lightwave Technology, 22 (2), pp. 526-533, (2004). DOI: 10.1109/JLT.2003.821746