Qianfan Xu
Assistant Professor
Electrical and Computer Engineering
Rice University
Office: Brockman Hall 338
Phone: (713)348-3576
e-mail: qianfan@rice.edu
Education
Ph.D. Cornell University, 2007
M.S. Cornell University, 2006
M.E. Tsinghua University, 2002
B.E. Tsinghua University, 1999
Research Areas
Nanophotonic Devices and Systems; Optical Interconnections; Optical Sensing.
Selected Publications
Q. Xu, B. Schmidt, S. Pradhan, and M. Lipson, "Micrometre-scale silicon electro-optic modulator," Nature 435, 325-327, (2005).
Q. Xu, P. Dong, and M. Lipson, "Breaking the Delay-Bandwidth Limit in a Photonic Structure," Nature Physics 3, 405-410 (2007).
Y. Xia, C.Qiu, X. Zhang, W. Gao, J. Shu & Q. Xu "Suspended Si ring resonator for mid-IR application," Opt. Lett. 38,1122-1124(2013).
C. Qiu, J. Chen & Q. Xu "Ultraprecise measurement of resonance shift for sensing applications," Opt. Lett. 37,5012-5014(2012).
C. Qiu, J. Chen, Y. Xia & Q. Xu "Active dielectric antenna on chip for spatial light modulation," SCIENTIFIC REPORTS 2, 855 (2012).
C. Qiu, X. Ye, R. Soref, L. Yang, and Q. Xu, "Demonstration of reconfigurable electro-optical logic with silicon photonic integrated circuits," Opt. Lett. 37, 3942-3944(2012).
W. Gao, J. Shu, C. Qiu, and Q. Xu, "Excitation of Plasmonic Waves in Graphene by Guided-Mode Resonances," ACS NANO 6, 7806-7813 (2012).
C. Qiu and Q. Xu, "Controlling normal incident optical waves with an integrated resonator," Opt. Express 19, 26905-26910 (2011).
J.Shu, C.Qiu, V.Astley, D.Nickel, D.M. Mittleman, and Q.Xu, "High-contrast terahertz modulator based on extraordinary transmission through a ring aperture," Opt. Express 19, 26666-26671 (2011).
J.Shu, C.Qiu, X.Zhang, and Q.Xu, "Efficient coupler between chip-level and board-level optical waveguides," Opt. Lett. 36, 3614-3616 (2011).
Q. Xu, and R. Soref, "Reconfigurable optical directed-logic circuits using microresonator-based optical switches," Opt. Express 19, 5244-5259 (2011).
C. Qiu, J. Shu, Z. Li, X. Zhang, and Q. Xu, "Wavelength tracking with thermally controlled silicon resonators," Opt. Express 19, 5143-5148 (2011).
Q. Xu, "Silicon dual-ring modulator," Opt. Express 17, 20783-20793 (2009).
J. Ahn, M. Fiorentino, R. Beausoleil, N. Binkert, A. Davis, D. Fattal, N. Jouppi, M. McLaren, C. Santori, R. Schreiber, S. Spillane, D. Vantrease, and Q. Xu, "Devices and architectures for photonic chip-scale integration," Applied Physics A: Materials Science & Processing 95, 989-997 (2009).
Q. Xu, D. Fattal, and R. G. Beausoleil, "Silicon microring resonators with 1.5-um radius," Opt. Express 16, pp. 4309-4315 (2008).
S. Preble, Q. Xu, and M. Lipson, "Changing the color of light in a silicon resonator," Nature Photonics 1, 293-296 (2007).
Q. Xu, S. Manipatruni, B. Schmidt, J. Shakya, and M. Lipson, "12.5 Gbit/s carrier- injection-based silicon micro-ring modulators," Opt. Express 15, 430-436 (2007). [PDF]
Q. Xu, and M. Lipson, "All-optical logic based on silicon micro-ring resonators," Opt. Express 15, 924-929 (2007).
Q. Xu, S. Sandhu, M. L. Povinelli, J. Shakya, S. Fan, and M. Lipson "Experimental Realization of an On-Chip All-Optical Analogue to Electromagnetically Induced Transparency," Phys. Rev. Lett. 96, 123901 (2006).
Q. Xu, B. Schmidt, J. Shakya, and M. Lipson, "Cascaded silicon micro-ring modulators for WDM optical interconnection," Opt. Express 14, 9431-9435 (2006).
Q. Xu, J. Shakya, and M. Lipson, "Direct measurement of tunable optical delays on chip analogue to electromagnetically induced transparency," Opt. Express 14, 6463- 6468 (2006).
Q. Xu and M. Lipson, "Carrier-induced optical bistability in silicon ring resonators," Opt. Lett. 31, 341-343 (2006).
Q. Xu, V. Almeida, and M. Lipson, "Micrometer-scale all-optical wavelength converter on silicon," Opt. Lett. 30, 2733-2735 (2005).
Q. Xu, V. Almeida, and M. Lipson, "Demonstration of high Raman gain in a submicrometer-size silicon-on-insulator waveguide," Opt. Lett. 30, 35-37 (2005).
Q. Xu, V. Almeida, and M. Lipson, "Time-resolved study of Raman gain in highly confined silicon-on-insulator waveguides," Opt. Express 12, 4437-4442 (2004).
Q. Xu, V. Almeida, and M. Lipson, "Experimental demonstration of guiding and confining light in nanometer-size low-refractive-index material," Opt. Lett. 29, 1626-1628 (2004).
V. Almeida, Q. Xu, C. A. Barrios, and M. Lipson, "Guiding and confining light in void nanostructure," Opt. Lett. 29, 209-1211 (2004).
Q. Xu and M. Yao, "Theoretical analyses on short-term stability of semiconductor fiber ring lasers," IEEE J. Quantum Electron. 39, 1260-1265 (2003).
Q. Xu, M. Yao, Y. Dong, W. Cai, and J. Zhang, "Experimental demonstration of pattern effect compensation using an asymmetrical Mach-Zehnder interferometer with SOAs," IEEE Photon. Technol. Lett. 13, 1325-1327 (2001).
Q. Xu, M. Yao, M. Chen, and J. Zhang, "Analytical calculation based on probability model for the pattern effect of SOA as in-line amplifier for WDM system," Opt. Commun. 195, 159-166 (2001).
Q. Xu, M. Yao, Y. Dong, and J. Zhang, "Interferometric method of suppressing the pattern
effect in a semiconductor optical amplifier," Opt. Lett. 25, 1597-1599 (2000).
