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Analysis of optical channel cross talk for free-space optical interconnects in the presence of higher-order transverse modes

Analysis of optical channel cross talk for free-space optical interconnects in the presence of higher-order transverse modes

Applied Optics 44(30): 6380-6387

We analyze the effect of cross-talk noise on the performance of free-space optical interconnects (FSOIs). In addition to diffraction-caused cross talk, we consider the effect of stray-light cross-talk noise, an issue that, to the best of our knowledge, was not addressed previously. Simulations were performed on a microlens-based FSOI system using the modal composition and beam profiles experimentally extracted from a commercial vertical-cavity surface-emitting laser. We demonstrate that this cross-talk noise introduces significant degradation to interconnect performance, particularly for multitransverse-mode laser sources. A simple behavioral model is also developed that accurately approximates the cross talk noise for a range of optical sources and interconnect configurations.

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Accession: 048250463

Download citation: RISBibTeXText

PMID: 16252650

DOI: 10.1364/ao.44.006380

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