Publications

Selected Publications (LAICS)

• W. Wang, L. Lu, L. King, Y. Liu, M. Gong, S. Li, and H. Wu, “Cascaded subarray design and control method for power efficient, thermal crosstalk optimized optical phased array,” Opt. Express 31, 37381-37394 (2023)
• W. Hou, A. Azizimanesh, A. Dey, Y. Yang, W. Wang, C. Shao, H. Wu, H. Askari, S. Singh, and S. M. Wu,, “Strain Engineering for High-Performance Phase Change Memristors”, to appear in Nature Electronics, 2023.
• K.R. Vengalam, Y. Liu, T.Geng, H. Wu, and M. Huang, “Supporting Energy-Based Learning with an Ising Machine Substrate: A Case Study on RBM”, to be presented in IEEE/ACM International Symposium on Microarchitectures (MICRO), 2023.
• M. Gong and H. Wu, “Highly Over-Coupled Microring Phase Shifter and Its Application in Ring Assisted Mach–Zehnder Modulator”, IEEE Journal of Lightwave Technologies, early access publication, 2023.
• W. Wang, Y. Liu, L. King, L. Lu, S. Li, and H. Wu, “A Power-Efficient, Thermal-Crosstalk Suppressed Method for Optical Phased Array,” Conference on Laser and Electro Optics (CLEO), 2023.
• M. Gong and H. Wu, “A Minimal-Structured Ring Assisted Mach-Zehnder Modulator”, IEEE International Conference on Group IV Photonics, 2023.
• J. Gao, K. Zhu, and H. Wu, “A 50-GHz bandwidth traveling wave Mach-Zehnder modulator with built-in feedback equalization,” IEEE Journal of Lightwave Technologies, 40(12):3872-3881, 2022.
• Wu, et al., “Heterogeneous Integrated Sparse Optical Phased Array for Free-Space Optical Communication,” IEEE Research and Applications of Photonics in Defense (RAPID) Conference (2021).
• M. Gong, W. Wang, L. Lu, and H. Wu, “A Silicon Photonic Ring-Assisted Mach-Zehnder Modulator with Strongly-Coupled Rings,” IEEE International Photonics Conference (2021).
• X. Wang, W. Wang, Y. Li, X. Fu, S. Chen, F. Smith, H. Wu, and X. Cheng, “Low power and compact silicon thermo-optic switch based on suspended phase arm without support beams,” IEEE Photonic Technology Letters (2020).
• M. Gong and H. Wu, “Design of Nonlinear Optical Ring Resonators,” Conference on Laser and Electro Optics (CLEO), 2019.
• F. Smith, W. Wang, and H. Wu, “Sparse Optical Phased Array Design,” International Conference on Group IV Photonics, 2019.
• Afoakwa R., Lu L., Wu H., Huang M., “To Stack or Not to Stack,” International Conference on Parallel Architectures and Compilation Techniques (PACT), 2019.
• L. Lu, R. Afoakwa, M. Huang, and H. Wu, “Concurrent Multipoint-to-Multipoint Communication on Interposer Channels,” International Symposium on Low Power Electronics and Design (ISLPED), 2019.
• F. Smith, W. Wang, X. Wang, Y. Li, X. Cheng, and H. Wu, “A Design Study of Efficiency Enhancement in Silicon Photonic Thermo-Optic Phase Shifters,” IEEE Optical Interconnects Conference, 2019.
• F. Smith and H. Wu, “Photonic Phased Array Design by Synthesis,” International Conference on Group IV Photonics, 2018.
• M. Gong and H. Wu, “A Microring-based Time-Division Demultiplexer,” International Conference on Group IV Photonics, 2018.
• M. Gong, F. Smith and H. Wu, “A Differential Microring Time-Division Demultiplexer,” IEEE Optical Interconnect Conference, 2018.
• L. Lu, Y. Wang, and H. Wu, “An Energy-Efficient High-Swing PAM-4 Voltage-Mode Transmiter,” International Symposium on Low Power Electronics and Design (ISLPED), 2018.
• P. Ji, J. Gao, W. Xu, Y. Sun, W. He, and H. Wu, “Electronic-Photonic Circuit Design and Crosstalk Modeling for a High Density Multi-Lane MZM Array,” IEEE International Symposium on Circuits and Systems (ISCAS), 2018.
• R. Afoakwa, L. Lu, H. Wu, and M. Huang, “High Swing Pulse-Amplitude Modulation of Transmission Line Links for On-Chip Communication,” International Symposium on Circuits and Systems (ISCAS), 2018.
• Y. Wang and H. Wu, “Design high bandwidth-density, low latency and energy efficient on-chip interconnect,” International Symposium on Low Power Electronics and Design (ISLPED), 2017.
• W. Xu, J. Gao, P. Ji, Y. Sun, W. He, and H. Wu, “A PAM-4 optical receiver based on a silicon photonic quantizer,” IEEE 14th International Conference on Group IV Photonics, 2017.
• J. Gao and H. Wu, “A Multi-Function Mach Zehnder Modulator for Pulse Shaping and Generation,” Optics Express, 24(19): 22239-22249, 2016.
• I. Savidis, B. Ciftcioglu, J. Xu, J. Hu, M. Jain, R. Berman, J. Xue, P. Liu, D. Moore, G. Wicks, M. Huang, H. Wu, and E. G. Friedman, “Heterogeneous 3-D circuits: Integrating free-space optics with CMOS,” Microelectronics Journal, 50(c):66-75, April 2016.
• J. Gao, Y. Sun, W. He, and H. Wu, “A Cross-Layer Multi-Physics Design Flow Electronic-Photonic Integrated Circuit,” IEEE Photonic Conference, 2016.
• J. Gao and H. Wu, “An Equalized Traveling-Wave Electrode Design for Mach-Zehnder Modulator,” IEEE Optical Interconnect Conference, 2016.
• J. Gao and H. Wu, “A high-speed, high-sensitivity silicon avalanche photodiode in 130-nm CMOS,” IEEE Photonic Conference, 2015.
• Y. Wang and H. Wu, “A K-Band Pulse Radar Transceiver with Highly Digital Closed-Loop Time-of-Flight Measurement,” IEEE Asian Solid-State Circuits Conference, 2015.
• J. Xu, J. Hu, B. Ciftcioglu, and Hui Wu, “A 4-15-GHz ring oscillator based injection-locked frequency multiplier with built-in harmonic generation,” IEEE Custom Integrated Circuits Conference (CICC), 1(4): 22-25, Sept. 2013.
• J. Hu, Y. Zhu, S. Wang, and H. Wu, “An Energy-Efficient IR-UWB Receiver Based on Distributed Pulse Correlator,” IEEE Transactions on Microwave Theory and Techniques, 61(6):2447-2459, May 2013.
• J. Hu, J. Xu, and H. Wu, “A 25-Gbps 8-ps/mm Transmission Line Based Interconnect for On-Chip Communications in Multi-Core Chips,” International Microwave Symposium, 2013.
• S. Wang and H. Wu, “Multi-wavelength microring-based optical pulse train generator,” Conference on Lasers and Electro-Optics (CLEO), 2012.
• H. Wu, B. Ciftcioglu, R. Berman, J. Hu, S. Wang, I. Savidis, M. Jain, D. Moore, M. Huang, E. Friedman, G. Wicks, “Chip-Scale Demonstration of 3-D integrated Intra-Chip Free-Space Optical Interconnect,” Proc. SPIE 8265, 2012.
• J. Gao, R. Berman, M. Jain, D. Moore, G. Wicks, M. Huang, E.G. Friedman, and H. Wu, “Recent progress on 3-D integrated intra-chip free-space optical interconnect,” IEEE Optical Interconnects Conferencek, 2012.
• A. Carpenter, J. Hu, J. Xu, M. Huang, H. Wu, and P. Liu, “Using Transmission Lines for Global On-Chip Communication,” IEEE Journal on Emerging and Selected Topics in Circuits and Systems, 2(2):183-193, 2012.
• B. Ciftcioglu, R. Berman, S. Wang, J. Hu, I. Savidis, M. Jain, D. Moore, M. Huang, E.G. Friedman, G. Wicks, and H. Wu, “3-D Integrated Heterogeneous Intra-chip Free-space Optical Interconnect,” Optics Express, vol. 20, no. 4, pp. 4331-4345, Febebruary 2012.
• H. Wu, B. Ciftcioglu, R. Berman, J. Hu, S. Wang, I. Savidis, M. Jain, D. Moore, M. Huang, E. Friedman, G. Wicks, “Chip-Scale Demonstration of 3-D Integrated Intra-Chip Free-Space Optical Interconnect (Invited Paper),” SPIE Photonics West, January 2012.
• H. Dery, H. Wu, B. Ciftcioglu, M. Huang, Y. Song, R. Kawakami, J. Shi, I. Krivorotov, D. Telesca, I. Zutic, and L. J. Sham, “Nanospintronics based on Magnetologic Gates,” IEEE Transactions on Electron Devices, vol. 59, no. 1, January 2012.
• S. Wang and H. Wu, “Experimental demonstration of microring-based optical pulse train generator,” Optics Express, vol. 19, no. 17, pp. 16259-16265, August 2011.
• Shang Wang and Hui Wu, “Experimental Demonstration of Microring-based Optical Pulse Train Generator,” IEEE Photonics Conference, August 2011.
• A. Carpenter, J. Hu, M. Huang, H. Wu, and Peng Liu, “A Design Space Exploration of Transmission-Line Links for On-Chip Interconnect,” International Symposium on Low Power Electronics and Design, August 2011.
• H. Dery, H. Wu, B. Ciftcioglu, M. Huang, Y. Song, R. Kawakami, J. Shi, I. Krivorotov, D. Telesca, I. Zutic, and Lu J. Sham, “Spintronic nanoelectronics using graphene based magneto-logic gates”, Spintronics IV in the SPIE NanoScience + Engineering Conference, August 2011.
• A. Carpenter, J. Hu, J. Xu, M. Huang, and H. Wu, “A Case for Globally Shared-Medium On-Chip Interconnect,” International Symposium on Computer Architecture, June 2011.
• H. Dery, B. Ciftcioglu, Y. Song, H. Wu, M. Huang, R. Kawakami, J. Shi,I. Krivorotov, I. Zutic, and L. J. Sham, “Spintronic Search Engines”, IEEE Device Research Conference, June 2011.
• H. Wu, “3-D Integrated Intra-Chip Free-Space Optical Interconnect (Invited)”, IEEE Photonic Society High Speed Workshop, May 2011.
• B. Ciftcioglu, J. Hu, R. Berman, Z. Darling, J. Zhang, S. Wang, M. Jain, J. Xue, I. Savidis, A. Garg, M. Huang, E. Friedman, G. Wicks, D. Moore, and H. Wu, “An 3-D Integrated Intra-Chip Free-Space Optical Interconnect,” IEEE Photonic Technology Letters, vol. 23, no. 3, pp. 164-166, February 2011.
• B. Ciftcioglu, J. Zhang, R. Sobolewski, and H. Wu, “An 850-nm Normal-Incidence Germanium Metal-Semiconductor-Metal Photodetector With 13-GHz Bandwidth and 8- A Dark Current”, IEEE Photonic Technology Letters, vol. 20, no. 24, pp. 2069-2071, December 2010.
• B. Ciftcioglu, R. Berman, J. Zhang, Z. Darling, A. Garg, J. Hu, M. Jain, P. Liu, I. Savidis, S. Wang, J. Xue, E. Friedman, M. Huang, D. Moore, G. Wicks, H. Wu, “Initial Results of Prototyping a 3D Integrated Intra-Chip Free-Space Optical Interconnect”, Workshop on the Interaction between Nanophotonic Devices and Systems, December 2010.
• S. Wang, B. Ciftcioglu, and H. Wu, “Microring-Based Optical Pulse Train Generator”, Optics Express, no. 18, pp. 19314-19323, September 2010.
• J. Xue, A. Garg, B. Ciftcioglu, S. Wang, J. Hu, I. Savidis, M. Jain, M. Huang, H. Wu, E. Friedman, G. Wicks, and D. Moore, “An Intra-Chip Free-Space Optical Interconnect”, 37th International Symposium on Computer Architecture (ISCA), June 2010.
• B. Ciftcioglu, J. Xue, J. Hu, I. Savidis, S. Wang, M. Jain, A. Garg, J. Zhang, R. Berman, Z. Darling, M. Huang, E. Friedman, G. Wicks, D. Moore, and H. Wu, “3-D Integrated Intra-Chip Free-Space Optical Interconnect”, 2010 IEEE International Solid-State Circuits Conference (ISSCC) Student Research Forum, February 2010.
• J. Hu, Y. Zhu, S. Wang, and H. Wu, “Energy Efficient, Reconfigurable, Distributed Pulse Generation and Detection in UWB Impulse Radios”, pp.773-777, IEEE International Conference on Ultra-Wideband, September 2009.
• B. Ciftcioglu, L. Zhang, J. Zhang, J.R. Marciante, J.D. Zuegel, R. Sobolewski, and H. Wu, “Integrated Silicon PIN Photodiodes Using Deep Nwell in a Standard 0.18-um CMOS Technology,” IEEE Journal of Lightwave Technology, 27(15):3303-3313, August 2009.
• J. Xue, A. Garg, B. Ciftcioglu, S. Wang, J. Hu, I. Savidis, M. Jain, M. Huang, H. Wu, E. Friedman, G. Wicks, and D. Moore, “An Intra-Chip Free-Space Optical Interconnect”, 3rd Workshop on Chip Multiprocessor Memory Systems and Interconnects (CMP-MSI) held in conjunction with the 36th International Symposium on Computer Architecture, June 2009.
• J. Hu, Y. Zhu, S. Wang, and H. Wu, “A 0.17-nJ/Pulse IR-UWB Recevier Based on Distributed Pulse Correlator in 0.18-um Digital CMOS,” IEEE Radio Frequency Integrated Circuit (RFIC) Symposium, 543-546, June 2009.
• Y. Zhu, J. Zuegel, J. Marciante, and H. Wu, “Distributed Waveform Generator: A New Circuit Technique for Ultra-Wideband Pulse Generation, Shaping and Modulation,” IEEE Journal of Solid-State Circuits, 44(3):808-823, March 2009.
• Y. Zhu, J. Hu, and H. Wu, “A 2.5 Gpulse/s, 25 pJ/pulse, 0.18-um CMOS Impulse Radio UWB Transmitter Based on Dual-Polarity Distributed Waveform Generator,” 9th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, pp.225-228, Jan. 2009.
• B. Ciftcioglu, L. Zhang, J. Zhang, J.R. Marciante, J.D. Zuegel, R. Sobolewski, and H. Wu, “3-GHz Silicon Photodiodes Integrated in a Standard 0.18-um CMOS Technology,” IEEE Photonic Technology Letters, vol. 20, no. 24, pp. 2069-2071, Dec. 2008.
• L. Zhang, A. Carpenter, B. Ciftcioglu, A. Garg, M. Huang, and H. Wu, “Injection-Locked Clocking: A Low-Power Clock Distribution Scheme for High-Performance Microprocessors,” IEEE Transaction on Very Large Scale Integrated Circuit (TVLSI), vol. 16, no. 9, pp. 1251-1256, Sep. 2008.
• L. Zhang, B. Cifctioglu, and Hui Wu, “Active Deskew in Injection-Locked Clocking,” 2008 IEEE Custom Integrated Circuits Conference (CICC), Sep. 2008.
• L. Zhang, D. Karasiewicz, B. Cifctioglu, and Hui Wu, “A 1.6-to-3.2/4.8 GHz Dual-Modulus Injection-Locked Frequency Multiplier in 0.18um Digital CMOS,” 2008 IEEE Radio-Frequency Integrated Circuits (RFIC) Symposium, pp.427-430, June 2008.
• L. Zhang, A. Carpenter, B. Ciftcioglu, A. Garg, M. Huang, and H. Wu, “Injection-Locked Clocking: A Low-Power Clock Distribution Scheme for High-Performance Microprocessors,” extended technical report.
• Y. Zhu, J. Zuegel, J. Marciante, and H. Wu, “A 10.9 GS/s, 64 Taps Distributed Waveform Generator with DAC-Assisted Current-Steering Pulse Generators in 0.18um Digital CMOS,” 8th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, pp.13-16, Jan. 2008.
• J. Hu, Y. Zhu, and H. Wu, “An Ultra-Wideband Resistive-Feedback Low-Noise Amplifier with Noise Cancelation in 0.18um Digital CMOS,” 8th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, pp.218-221, Jan. 2008.
• J. Hu and H. Wu, “A Study of Transceiver Architecture of Ultra-Wideband Impulse Radios,” IEEE Upstate New York Workshop on Communications, Sensors and Networking, November 2007.
• L. Zhang, B. Ciftcioglu and H. Wu, “A 1V, 1mW, 4GHz Injection-Locked Oscillator for High Performance Clocking”, 2007 IEEE Custom Integrated Circuits Conference (CICC), pp.309-312, October 2007.
• Y. Zhu, J. Zuegel, J. Marciante, and H. Wu, “A 10GS/s Distributed Waveform Generator for Sub-Nanosecond Pulse Generation and Modulation in 0.18um Standard Digital CMOS”, IEEE Radio-Frequency Integrated Circuits (RFIC) Symposium Digest of Papers, pp.35-38, June 2007.
• Y. Zhu, S. Wang, and H. Wu, “Multilayer Coplanar Waveguide Transmission Lines Compatible with Standard Digital Silicon Technologies”, Int’l Microwave Symposium (IMS), TH2G-05, June 2007.
• Y. Zhu, J. Zuegel, J. Marciante, and H. Wu, “A 0.18um CMOS Distributed Transversal Filter with Binary-Weighted Gain Cell Design,” 7th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, pp.563-566, Jan. 2007.
• Y. Zhu and H. Wu, “Ultrafast Pulse Processing using Distributed Transversal Filters for Impulse Radio UWB”, IEEE Upstate New York Workshop on Communications and Networking, Nov. 2006.
• H. Wu, L. Zhang, A. Carpenter, A. Garg, and M. Huang, “Injection-Locked Clocking: A Low-Power Clock Distribution Scheme for High-End Microprocessors,” 3rd Watson Conference on Interaction between Architecture, Circuits, and Compilers, October 2006.
• Y. Zhu, J. Zuegel, J. Marciante, and H. Wu, “Integrated Distributed Transversal Filters for Pulse Shaping and Interference Suppression in UWB Impulse Radios”, IEEE Int’l Conference on Ultra-Wideband, Sep. 2006.
• L. Zhang, B. Ciftcioglu, M. Huang and H. Wu, “Injection-Locked Clocking: A New GHz Clock Distribution Scheme”, IEEE Custom Integrated Circuits Conference (CICC), pp. 785-788, Sep. 2006.
• Y. Zhu and H. Wu, “A 10-40GHz 7dB Directional Coupler in Digital CMOS Technology”, Int’l Microwave Symposium (IMS) Digest, pp.1551-1554, June 2006.
• Y. Zhu and H. Wu, “Distributed Amplifiers with Non-Uniform Filtering Structures”, IEEE Radio-Frequency Integrated Circuits (RFIC) Symposium Digest of Papers, pp.367-370, June 2006.
• L. Zhang and H. Wu, “A Double-Balanced Injection-Locked Frequency Divider for Tunable Dual-Phase Signal Generation”, IEEE Radio-Frequency Integrated Circuits (RFIC) Symposium Digest of Papers, pp.137-140, June 2006.
• Y. Zhu, J. Zuegel, J. Marciante, and H. Wu, “A Reconfigurable, Multi-Gigahertz Pulse Shaping Circuit Based on Distributed Transversal Filters”, IEEE Int’l Circuit and System Symposium (ISCAS) Digest, pp.4232-4235, May 2006.
• H. Wu and L. Zhang, “A 16-18GHz 0.18 um Epi-CMOS Divide-by-3 Injection-Locked Frequency Divider”, IEEE Int’l Solid-State Circuit Conf. (ISSCC) Digest Tech. Papers, vol.49, pp.602-603, Feb. 2006.
• Y. Zhu, J. Zuegel, J. Marciante, and H. Wu, “A 0.18 m CMOS Distributed Transversal Filter for Sub-Nanosecond Pulse Synthesis”, Proc. IEEE Radio and Wirelss Symposium, pp.563-566, Jan. 2006.

Selected Publications (Caltech)

• H. Wu, J. Tierno, P. Pepeljugoski, J. Schaub, S. Gowda, J. Kash, and A. Hajimiri, “Integrated Transversal Equalizers in High-Speed Fiber-Optic Systems”, IEEE J. Solid-State Circuits, vol. 38, no. 12, pp. 2131-2137, Dec. 2003.
• H. Wu, J. Tierno, P. Pepeljugoski, J. Schaub, S. Gowda, J. Kash, and A. Hajimiri,et al, “Differential 4-tap and 7-tap Transversal Filters in SiGe for 10Gb/s Multimode Fiber Optic Link Equalization”, IEEE Int’l. Solid-State Circuit Conf. (ISSCC) Digest Tech. Papers, vol.46, pp.180-181, Feb. 2003.
• H. Wu and A. Hajimiri, “Silicon-Based Distributed Voltage Controlled Oscillators”, IEEE J. Solid-State Circuits, vol.36, no.3, pp.493-502, Mar. 2001.
• H. Wu and A. Hajimiri, “A 19GHz, 0.5mW, 0.35um CMOS Frequency Divider with Shunt-Peaking Locking-Range Enhancement”, IEEE IEEE Int’l. Solid-State Circuit Conf. (ISSCC) Digest Tech. Papers, vol.44, pp.412-413, Feb. 2001.