Optoelectronics Technology Center
Professor Larry Coldren's Group
Department of Electrical & Computer Engineering
University of California, Santa Barbara

Ashish Bhardwaj received the B.Sc. (Hons) and M.Sc. degrees in Physics from the Indian Institute of Technology, Kharagpur, India, in 1994 and 1996 respectively, and the Ph.D. degree in Applied Physics from the California Institute of Technology, Pasadena in 2001. He then joined Bell Laboratories, Lucent Technologies, at the Crawford Hill Labs in Holmdel, NJ as a Member of Technical Staff. There he studied fast wavelength switching in tunable lasers for applications in optical packet switching. He also led research in the design, fabrication and characterization of large-scale monolithically integrated Indium Phosphide based Photonic Integrated Circuits employing Semiconductor Optical Amplifiers. In 2007, he joined the Department of Electrical and Computer Engineering at the University of California, Santa Barbara as a Senior Research Scientist, where his research is focused on monolithically integrated injection locked semiconductor lasers.

Recent Publications:

“Wavelength Conversion using Semiconductor Optical Amplifiers in Differential Mach-Zehnder Interferometer with Tunable Input Coupler”, A. Bhardwaj, J.E. Simsarian, J.D. LeGrange, L. Zhang, P. Bernasconi, N. Sauer, L. Buhl, and D.T. Neilson, Electron. Lett., vol. 45 (4), pp. 225-227, February 2009.

“An InP-based Optical Equalizer Monolithically Integrated with a Semiconductor Optical Amplifier”, A. Bhardwaj, N. Sauer, L. Buhl, W. Yang, L. Zhang, and D.T. Neilson, IEEE Photon. Technol. Lett., vol. 19 (19), pp. 1514-1516, October 2007.

“Reduction of Nonlinear Distortion from a Semiconductor Optical Amplifier using and Optical Equalizer”, A. Bhardwaj, C.R. Doerr, S. Chandrasekhar and L.W. Stulz, IEEE Photon. Technol. Lett., vol. 16 (3), pp. 921-923, March 2004.

“Optical Switch Fabrics for Ultra-High Capacity IP-Routers”, J. Gripp, M. Duelk, J.E. Simsarian, A. Bhardwaj, P. Bernasconi, O. Laznicka and M. Zirngibl, (Invited Paper), J. Lightwave Technol., vol. 21 (11), pp. 2839-2850, November 2003.

“Demonstration of Stable Wavelength Switching on a Fast Tunable Laser Transmitter”, A. Bhardwaj, J. Gripp, J.E. Simsarian and M. Zirngibl, IEEE Photon. Technol. Lett., vol. 15 (7), pp. 1014-1016, July 2003.

“All-optical logic circuits based on polarization properties of non-degenerate four-wave mixing”, A. Bhardwaj, P.O. Hedekvist and K. Vahala, J. Opt. Soc. Am. B, vol. 18 (5), pp. 657-665, May 2001.