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Corner-cube retroreflectors for optical chip-to-chip interconnections.

|September 22, 2009

Summary

Slightly misaligned corner-cube retroreflectors offer robust optical chip-to-chip interconnections. Their design minimizes alignment sensitivity, simplifying optical systems and reducing manufacturing costs.

Area of Science:

Optics and Photonics
Optical Engineering

Background:

Optical chip-to-chip interconnections are crucial for high-speed data transfer.
Precise alignment of optical components is a significant challenge in system design.

Purpose of the Study:

To propose and design corner-cube retroreflectors with modified dihedral angles for optical interconnections.
To investigate the retroreflective properties and alignment tolerance of these modified corner cubes.

Main Methods:

Utilizing a ray-tracing algorithm to model light propagation.
Employing an iteration procedure for designing corner cubes based on source and image positions.

Main Results:

Corner-cube retroreflectors with dihedral angles deviating from 90 degrees exhibit stable spot patterns.

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The retroreflective property remains largely invariant to the incident angle, reducing alignment sensitivity.

Conclusions:

Modified corner-cube retroreflectors significantly relax alignment requirements for optical chip-to-chip interconnections.
The presented design methodology enables the creation of robust optical interconnects with enhanced tolerance to misalignment.