10 June 2004 Optical I/O technology for digital VLSI
Author Affiliations +
Abstract
We describe the development of a high-speed, 12-channel (8-data, 2-clock and 2-alignment channels), parallel optical link with a unique packaging concept. The package is used to demonstrate the viability of chip-to-chip optical I/O in very large scale integration (VLSI) circuits. However, for implementation of optical systems in high performance computing applications, the cost of components and packaging has to come down significantly from the traditional optical communication distances. In the current work we attempted to realize such a system by using power efficient optical and electronic components together with a potentially low cost packaging solution compatible with the electronics industry. Vertical Cavity Surface Emitting Lasers (VCSEL), positive-intrinsic-negative (PIN) photodetectors, polymer waveguide arrays as well as CMOS transceiver chip were heterogeneously integrated on a standard microprocessor flip-chip pin grid array (FCPGA) substrate. The CMOS transceiver chip from 0.18μm processing technology contains VCSEL drivers, transimpedance and limiting amplifiers and on-chip self-testing circuits. A self-test circuit in such high-speed systems will be highly beneficial to reduce the testing cost in real products. For fully assembled packages we measured a 3 Gb/s optical eye for the transmitter (24Gb/s aggregate data rate) and a transmission over the complete link was achieved at 1 Gb/s (8Gb/s aggregate data rate).
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Edris M. Mohammed, Edris M. Mohammed, Thomas P. Thomas, Thomas P. Thomas, Daoqiang Lu, Daoqiang Lu, Henning Braunisch, Henning Braunisch, Steven Towle, Steven Towle, Brandon C. Barnett, Brandon C. Barnett, Ian A. Young, Ian A. Young, Gilroy Vandentop, Gilroy Vandentop, } "Optical I/O technology for digital VLSI", Proc. SPIE 5358, Photonics Packaging and Integration IV, (10 June 2004); doi: 10.1117/12.530160; https://doi.org/10.1117/12.530160
PROCEEDINGS
11 PAGES


SHARE
Back to Top