Tolerance analysis of optical interconnection based on image motion

Young Gu Ju

doi:10.1007/s11082-016-0489-y

Tolerance analysis of optical interconnection based on image motion

Young Gu Ju

Department of Physics Education

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The tolerance of a free space optical interconnection was analyzed using the image motion method and a ray tracing software. The theoretical analysis indicated that the decentering between a vertical-cavity surface-emitting laser and a micro-lens is the most critical alignment error to the image motion and should be controlled carefully during fabrication. In addition, the reduced divergence angle due to the micro-lens reduced the sensitivity of the decentering error in a collimating lens to image motion. In addition, we suggest that the use of the alignment holes and balls on the substrate enables precise passive alignment between a VCSEL and micro-lens.

Original language	English
Article number	220
Journal	Optical and Quantum Electronics
Volume	48
Issue number	3
DOIs	https://doi.org/10.1007/s11082-016-0489-y
State	Published - 1 Mar 2016

Keywords

Image motion
Optical interconnect
Optical invariant
Passive alignment
Tolerance
VCSEL

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10.1007/s11082-016-0489-y

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abstract = "The tolerance of a free space optical interconnection was analyzed using the image motion method and a ray tracing software. The theoretical analysis indicated that the decentering between a vertical-cavity surface-emitting laser and a micro-lens is the most critical alignment error to the image motion and should be controlled carefully during fabrication. In addition, the reduced divergence angle due to the micro-lens reduced the sensitivity of the decentering error in a collimating lens to image motion. In addition, we suggest that the use of the alignment holes and balls on the substrate enables precise passive alignment between a VCSEL and micro-lens.",

keywords = "Image motion, Optical interconnect, Optical invariant, Passive alignment, Tolerance, VCSEL",

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AB - The tolerance of a free space optical interconnection was analyzed using the image motion method and a ray tracing software. The theoretical analysis indicated that the decentering between a vertical-cavity surface-emitting laser and a micro-lens is the most critical alignment error to the image motion and should be controlled carefully during fabrication. In addition, the reduced divergence angle due to the micro-lens reduced the sensitivity of the decentering error in a collimating lens to image motion. In addition, we suggest that the use of the alignment holes and balls on the substrate enables precise passive alignment between a VCSEL and micro-lens.

KW - Image motion

KW - Optical interconnect

KW - Optical invariant

KW - Passive alignment

KW - Tolerance

KW - VCSEL

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Tolerance analysis of optical interconnection based on image motion

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