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Optical Engineering

Design and fabrication of a high-density 2D fiber array for holographic switching applications
Author(s): Cedric Letort; Bruno Vinouze; Bruno Fracasso
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Paper Abstract

Holographic two-dimensional beam steering using a pixellated spatial light modulator (SLM) is a flexible and accurate technique to implement advanced space-switching, building-block functions for optical network nodes. We present the design of a specific fiber array for large-capacity holographic switches. We use two-dimensional and irregular array topology to optimize the space-bandwidth product of the SLM and to avoid crosstalk due to the coupling of higher diffraction orders. The fiber-array module is integrated by inserting the fibres through a pair of etched silicon plates aligned and fixed using a steel mount. The device is tested through near-field and fiber-to-fiber free space coupling tests. An average fiber-to-fiber insertion loss of 1 dB is achieved for a prototype containing 64 fibers.

Paper Details

Date Published: 1 April 2008
PDF: 9 pages
Opt. Eng. 47(4) 045401 doi: 10.1117/1.2911718
Published in: Optical Engineering Volume 47, Issue 4
Show Author Affiliations
Cedric Letort, TELECOM Bretagne (France)
Bruno Vinouze, TELECOM Bretagne (France)
Bruno Fracasso, TELECOM Bretagne (France)


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