Title :
Unidirectional chip-to-fiber grating couplers in unmodified 45nm CMOS technology
Author :
Wade, M.T. ; Kumar, Ravindra ; Nammari, Kareem ; Gentry, Cale M. ; Shainline, J.M. ; Orcutt, Jason S. ; Tamma, Ananth ; Ram, Rajeev ; Stojanovic, V. ; Popovic, Milos A.
Author_Institution :
Dept. of Electr., Comput., & Energy Eng., Univ. of Colorado, Boulder, CO, USA
Abstract :
We propose and demonstrate the first asymmetric unidirectional grating couplers fabricated in a 45nm unmodified CMOS process. Measured coupling efficiency from fiber-to-chip is ~40 %. Simulations show >70% efficiency is achievable with same design.
Keywords :
CMOS integrated circuits; diffraction gratings; integrated optoelectronics; optical fibre couplers; asymmetric unidirectional grating couplers; chip-to-fiber coupling efficiency; grating design; size 45 nm; unidirectional chip-to-fiber grating couplers; unmodified CMOS technology; CMOS integrated circuits; CMOS process; Couplers; Finite difference methods; Gratings; Optical device fabrication; Optical scattering;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
