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Updated: Jul 6, 2026

Design and Development of a Three-Dimensionally Printed Microscope Mask Alignment Adapter for the Fabrication of Multilayer Microfluidic Devices

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Tolerance of optical interconnections to misalignment.

¹NEC Research Institute, 4 Independence Way, Princeton, New Jersey 08540, USA.

|March 6, 2008

Summary

Understanding optical interconnects: Misalignment tolerance is optimized by selecting the ideal beam diameter for single-mode systems. Multimode systems can accommodate misalignment but reduce channel density, impacting interconnect performance with length.

Area of Science:

Optics
Optical Engineering
Telecommunications

Background:

Free-space optical interconnects are crucial for high-speed data transfer.
Misalignment is a significant challenge affecting system performance and reliability.

Purpose of the Study:

To investigate the fundamental reasons for misalignment tolerance in optical interconnects.
To determine optimal beam configurations for maximizing light coupling under misalignment.

Main Methods:

Analysis of single-mode optical beam overlap in the presence of misalignment.
Extension of analysis to multimode optical systems.
Evaluation of three example optical systems for passive alignment.

Main Results:

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An optimal beam diameter exists for any misalignment level, maximizing light coupling.
Multimode beams can accommodate any misalignment, albeit with reduced channel density.
Interconnect channel capacity decreases with length due to misalignment.

Conclusions:

Beam diameter optimization is key for single-mode optical interconnects facing misalignment.
Multimode systems offer a trade-off between misalignment tolerance and channel density.
System length is a critical factor in channel capacity reduction for misaligned interconnects.