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Proceedings Paper

Design and optimization of VCSEL-based micro-optical relay systems: bringing optical information to silicon chips
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Paper Abstract

We analyze the potentialities of microlens-based free-space optical pathway blocks for on-chip interconnects. To assess the promises of these modules, researchers typically make use of simple analytic Gaussian beam propagation (GBP). Although this approach leads to a first order layout of a microlens system it does not include aberrations. Aberrations however and -- spherical aberrations in particular -- become important when lenses with a small focal number are implemented. This is especially true when surface emitting lasers with a relative high beam divergence such as e.g. VCSELs are used. In this paper we evaluate how these aberrations affect the performances of such optical interconnection systems and we verify the validity of the GBP method. We enter various GBP layouts in the photonics design software SOLSTIS, which traces real rays or propagates spatially coherent optical beams through the system. We model and compare the performances of different microlens-relay system configurations and we focus on optical efficiency and scalability issues of these micro-optical interconnection components. To conclude we relate optical pathway lengths to minimum microlens diameters and to maximum achievable channel densities.

Paper Details

Date Published: 13 December 2001
PDF: 12 pages
Proc. SPIE 4455, Micro- and Nano-optics for Optical Interconnection and Information Processing, (13 December 2001); doi: 10.1117/12.450441
Show Author Affiliations
Valerie Baukens, Vrije Univ. Brussel (Belgium)
Guy Verschaffelt, Vrije Univ. Brussel (Belgium)
Heidi Ottevaere, Vrije Univ. Brussel (Belgium)
Irina P. Veretennicoff, Vrije Univ. Brussel (Belgium)
Hugo Thienpont, Vrije Univ. Brussel (Belgium)


Published in SPIE Proceedings Vol. 4455:
Micro- and Nano-optics for Optical Interconnection and Information Processing
Mohammad R. Taghizadeh; Hugo Thienpont; Ghassan E. Jabbour, Editor(s)

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