CMOS technology scaling especially in the sub-100 nm
regime has made signaling in long global a challenge,
resulting in a need for an improved interconnect technology.
Optical signalling is a promising alternative to
existing global interconnects and alleviates interconnect
bottle-neck. This paper presents a design of a CMOS
trans-impedance amplifier (TIA) that is intended for a
truly CMOS compatible on-chip optical clock distribution
system. This TIA employs replica biasing technique
to achieve stability while maximizing its bandwidth and
gain. The design was implemented in a 0.35μm CMOS
process and is currently under probe testing. The simulation
results show that the design achieved a bandwidth of
1GHz and gain of 128dB-Ω. Extensive Monte-Carlo simulations
indicate the superior characteristics of stability
under a variety of process and environmental variations.
A novel, truly CMOS compatible, waveguide coupled, high-speed photodiode for on-chip optical clock distribution is designed using analytical calculations, electro-optical simulations, and experimental analysis. Experiment and simulation results from test devices are presented and analyzed.