1. Microelectronics Research Center, The University of Texas at Austin, Austin, Texas78758, United States
2. Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas78705, United States
3. Alpine Optoelectronics, Fremont, California94538, United States
4. Synopsys Inc., Mountain View, California94043, United States
5. Omega Optics, Inc., 8500 Shoal Creek Blvd., Bldg. 4, Suite 200, Austin, Texas78757, United States