We present an analytical model that allows to calculate the current response of a spatially modulated light CMOS detector (SML-detector) and compare this response with the response of a traditional CMOS photodetector. It is shown that the SML detector already yields a three orders of magnitude faster response time than a traditional CMOS detector in a 0.25 m CMOS technology. This response time will further decrease as CMOS technology evolves. This analytical expression is compared with a numerical solution of the diffusion equation and with experimental results. Both show an excellent correspondence. Therefore we can conclude that the SML-detector is the solution of choice for cheap, CMOS-compatible receivers in integrated opto-electronic systems.Index Terms-CMOS analog integrated circuits, optical receivers, photodetectors.

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In this letter, we report on the demonstration of a 2.48-Gb/s multichannel optical data-link for intramultichip module interconnects. The optical module was fabricated in Poly MethylMethAcrylate (PMMA) by deep proton lithography and monolithically integrates micromirrors and cylindrical lenses. With the same technology, we have also fabricated a singlechannel optical bridge and used this component to demonstrate a proof-of-principle optical intrachip interconnect by establishing a digital data-link between optoelectronic transceivers integrated on the same chip.

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