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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

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Optimization of alignability in integrated planar-optical interconnect packages.

R S Beech, A K Ghosh

|September 22, 2010

Summary

This summary is machine-generated.

This study analyzes holographic optical backplanes for board-to-board interconnections, focusing on power transfer efficiency and alignability. Design guidelines are developed to optimize interconnects for greater offset tolerance, prioritizing alignability over peak efficiency.

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Last Updated: Jun 8, 2026

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Area of Science:

Optoelectronics
Holographic optical elements
Integrated optics

Background:

Board-to-board interconnections are crucial in electronic systems.
Holographic optical elements offer compact solutions for optical interconnects.
Planar optics provide a pathway for miniaturized optical systems.

Purpose of the Study:

To analyze the power transfer efficiency of integrated planar-optics holographic optical backplanes.
To investigate the alignability of these backplanes for board-to-board interconnections.
To develop design guidelines for optimizing holographic optical interconnects.

Main Methods:

Analysis of power transfer efficiency and alignability as functions of various parameters.
Investigating the impact of lateral and angular offsets, hologram spatial frequency errors, wavelength errors, board distance, substrate thickness, hologram size, beam spot size, and beam propagation angle.
Developing design guidelines based on analytical findings.

Main Results:

Efficiency and alignability are sensitive to input offsets, hologram errors, wavelength variations, and physical dimensions.
Design guidelines are established for integrated planar-optic interconnects.
Optimization for maximum alignability is achievable.
Designs optimized for alignability may sacrifice peak efficiency but offer better offset tolerance.

Conclusions:

The performance of holographic optical backplanes is dependent on numerous design and operational parameters.
Design choices can be made to prioritize alignability, enhancing robustness against misalignments.
Optimized alignability is a key factor for reliable board-to-board optical interconnections.