On capacity improvement of optical free space chip-to-chip interconnects

摘要

The capacity of free space optical interconnects (FSOIs) is analyzed. The interconnect capacity is expressed as a function of signal-to-noise ratio (SNR), optical transmitted power, optical received power, optical crosstalk noise power, thermal noise, and detector size and spacing. The dependence of interconnects capacity on SNR and on feature parameters of photo-detectors array (fill factor, detectors spacing) is simulated. It is shown that feature parameters of photo-detectors array can be used as design parameters to optimize and improve the interconnect capacity. The effect of increasing the power budget as far as possible to improve the interconnect capacity is investigated as well.