My research lies at the intersection of optical communications and nanophotonics. Optical communications, realized by fiber-optic technology, has enabled the high data rate networks that the internet relies on. Nanophotonics, the manipulation of light at microscopic scales, promises to bring a similar revolution to the microelectronics world.

Google Scholar Profile

(titles are linked to papers).

C16. "Integrated Thermal Stabilization of a Microring Modulator."
Optical Fiber Conference (OFC) 2013, Anaheim, OM2H.7.
K. Padmaraju, D. F. Logan, X. Zhu, J. J. Ackert, A. P. Knights, K. Bergman

C15. "Pattern-Dependent Performance of Microring Modulators."
Optical Fiber Conference (OFC) 2013, Anaheim, OM2H.6.
X. Zhu, K. Padmaraju, L. Chen, D. F. Logan, J. J. Ackert, A. P. Knights, M. Lipson, K. Bergman

J9. "10 Gb/s Error-Free Operation of All-Silicon Ion-Implanted-Waveguide Photodetectors at 1.55 µm."
IEEE Photonics Technology Letters, 25 (1), 2013
R. R. Grote, K. Padmaraju, B. Souhan, J. B. Driscoll, K. Bergman, R. M. Osgood

J8. "Thermal stabilization of a microring modulator using feedback control."
Optics Express, 20 (27), 2012.
K. Padmaraju, J. Chan, L. Chen, M. Lipson, K. Bergman

C14. "10-Gb/s WDM Optically-Connected Memory System using Silicon Microring Modulators."
European Conference on Optical Communications (ECOC) 2012, Amsterdam, Mo.2.A.5.
D. Brunina, X. Zhu, K. Padmaraju, L. Chen, M. Lipson, K. Bergman

J7. "Colorless Optical Network Unit Based on Silicon Photonic Components for WDM PON."
IEEE Photonics Technology Letters, 24 (16), 2012
L. Xu, Q. Li, N. Ophir, K. Padmaraju, L. W. Luo, L. Chen, M. Lipson, K. Bergman

C13. "Experimental Characterization of the Optical-Power Upper Bound in a Silicon Microring Modulator."
Optical Interconnects (OI) 2012, Albuquerque, TuB5
Q. Li, N. Ophir, L. Xu, K. Padmaraju, L. Chen, M. Lipson, K. Bergman

C12. "10 Gb/s Error-Free Operation of an All-Silicon C-band Waveguide Photodiode."
Conference on Lasers and Electro-Optics (CLEO) 2012, San Jose, CTu1A.4.
R. R. Grote, K. Padmaraju, J. B. Driscoll, B. Souhan, K. Bergman, R. M. Osgood Jr.

C11. "A Broadband 1850-nm 40-Gb/s Receiver Based on Four-Wave Mixing in Silicon Waveguides."
Conference on Lasers and Electro-Optics (CLEO) 2012, San Jose, CM2B.2.
N. Ophir, K. Padmaraju, M. Menard, R. K. W. Lau, Y. Okawachi, M. Lipson, A. L. Gaeta, K. Bergman.

J6. "Error-free transmission of microring-modulated BPSK"
Optics Express, 20 (8), 2012.
K. Padmaraju, N. Ophir, Q. Xu, B. Schmidt, J. Shakya, S. Manipatruni, M. Lipson, K. Bergman

J5. "Wavelength conversion and unicast of 10-Gb/s data spanning up to 700 nm using a silicon nanowaveguide."
Optics Express, 20 (6), 2012.
N. Ophir, R. K. W. Lau, M. Menard, X. Zhu, K. Padmaraju, Y. Okawachi, R. Salem, M. Lipson, A. L. Gaeta, K. Bergman

C10. "Dynamic Stabilization of a Microring Modulator Under Thermal Perturbation."
Optical Fiber Conference (OFC) 2012, Los Angeles, OW4F.2.
K. Padmaraju, J. Chan, L. Chen, M. Lipson, K. Bergman

J4. "First Demonstration of a 10-Gb/s RZ End-to-End Four-Wave-Mixing Based Link at 1884 nm Using Silicon Nanowaveguides"
IEEE Photonics Technology Letters, 24 (4), 2012.
N.Ophir, R. K. W. Lau, M. Menard, R. Salem, K. Padmaraju, Y. Okawachi, M. Lipson, A. L. Gaeta, K. Bergman

C9. "Error-Free Transmission of DPSK at 5 Gb/s Using a Silicon Microring Modulator." [Finalist, Best Student Paper Award]
European Conference on Optical Communications (ECOC) 2011, Geneva, Th.12.LeSaleve.2.
K. Padmaraju, N. Ophir, Q. Xu, B. Schmidt, J. Shakya, S. Manipatruni, M. Lipson, K. Bergman

J3. "10-Gb/s Access Network Architecture Based on Micro-Ring Modulators With Colorless ONU and Mitigated Rayleigh Backscattering."
IEEE Photonics Technology Letters, 23 (13), 2011.
L. Xu, K. Padmaraju, L. Chen, M. Lipson, K. Bergman.

C8. "DPSK Modulation Using a Microring Modulator."
Conference on Lasers and Electro-Optics (CLEO) 2011, Baltimore. CTuN4.
K. Padmaraju, N. Ophir, S. Manipatruni, C. B. Poitras, M. Lipson, K. Bergman.

C7. "Continuously Tunable Wavelength Conversion of Data with Record Probe-Idler Separations in a Silicon Nanowire."
Conference on Lasers and Electro-Optics (CLEO) 2011, Baltimore. CMAA2.
N. Ophir, M. Menard, K. Padmaraju, R. K. W. Lau, Y. Okawachi, M. Lipson, A. L. Gaeta, K. Bergman.

J2. "Broadband Silicon Photonic Electrooptic Switch for Photonic Interconnection Networks."
IEEE Photonics Technology Letters, 23 (8), 2011.
A. Biberman, H. L. R. Lira, K. Padmaraju, N. Ophir, J. Chan, M. Lipson, K. Bergman.

C6. "First Demonstration of Error-Free Operation of a Full Silicon On-Chip Photonic Link."
Optical Fiber Conference (OFC) 2011, Los Angeles. OWZ3.
N. Ophir, K. Padmaraju, A. Biberman, L. Chen, K. Preston, M. Lipson, K. Bergman.

C5. "First Demonstration of Symmetric 10-Gb/s Access Networks Architecture based on Silicon Microring Single Sideband Modulation for Efficient Upstream Signal Re-modulation."
Optical Fiber Conference (OFC) 2011, Los Angeles. OThK2.
L. Xu, K. Padmaraju, L. Chen, M. Lipson, K. Bergman.

J1. "Continuous Wavelength Conversion of 40-Gb/s Data Over 100 nm Using a Dispersion-Engineered Silicon Waveguide"
IEEE Photonics Technology Letters, 23 (2), 2011.
N. Ophir, J. Chan, K. Padmaraju, A. Biberman, A. C. Foster, M. A. Foster, M. Lipson, A. L. Gaeta, K. Bergman.

C4. "Intermodulation Crosstalk from Silicon Microring Modulators in Wavelength-Parallel Photonic Networks-on-Chip"
IEEE Photonics Society Conference 2010, Denver. ThB5.
K. Padmaraju, N. Ophir, A. Biberman, L. Chen, E. Swan, J. Chan, M. Lipson, K. Bergman.

C3. "Demonstration of 1.28-Tb/s Transmission in Next-Generation Nanowires for Photonic Networks-on-Chip."
IEEE Photonics Society Conference 2010, Denver. ThB4.
N. Ophir, A. Biberman, J. S. Levy, K. Padmaraju, K. J. Luke, M. Lipson, K. Bergman.

C2. "Etching Titanium Nitride gate stacked on high-k dielectric."
Micro and Nano Engineering (MNE) 2010, Genoa, Italy. P-NANO-29.
J. C. Gerharz, K. Padmaraju, J. Moers, D. Grützmacher

C1. "Broadband CMOS-Compatible Silicon Photonic Electro-Optic Switch." [post-deadline paper]
Conference on Lasers and Electro-Optics (CLEO) 2010, San Jose. CPDA11.
A. Biberman, H. L. R. Lira, K. Padmaraju, N. Ophir, M. Lipson, K. Bergman.