Title :
Integration of 1D planar silica GRIN lenses in 3D optical interconnect system
Author :
Xu, Y.W. ; Michael, A. ; Kwok, C.Y. ; Puzzer, T. ; Peng, G.D.
Author_Institution :
Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia
Abstract :
Reported is the integration of 1D planar silica graded index (GRIN) lenses in a 3D optical interconnect system to reduce free-space propagation loss. The 3D optical interconnect system consists of a pair of facing-up and facing-down 45° micro-mirrors that establish a vertical optical transmission path between stacked dies. Without the silica lens, experimental measurement shows optical power loss of 33.7dB. A pair of GRIN lenses is then integrated into the system. Optical test shows that the system performance is improved by more than 25dB.
Keywords :
gradient index optics; light propagation; light transmission; microlenses; optical interconnections; silicon compounds; 1D planar silica; 3D optical interconnect system; GRIN lenses; SiO2; free-space propagation loss; graded index lenses; micromirrors; vertical optical transmission;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.0754
