Impact of weak index perturbations on 3 dB multi mode interference couplers

L. Leick; M. Svalgaard; J. H. Povlsen

doi:10.1364/IPR.2001.IMC3

Integrated Photonics Research
OSA Trends in Optics and Photonics Series (Optica Publishing Group, 2001),
paper IMC3
•https://doi.org/10.1364/IPR.2001.IMC3

Impact of weak index perturbations on 3 dB multi mode interference couplers

L. Leick, M. Svalgaard, and J. H. Povlsen

Integrated Photonics Research 2001

Monterey, California United States
ISBN: 1-55752-673-7

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Silica Based Components (IMC)

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L. Leick, M. Svalgaard, and J. H. Povlsen, "Impact of weak index perturbations on 3 dB multi mode interference couplers," in Integrated Photonics Research, A. Sawchuk, ed., Vol. 58 of OSA Trends in Optics and Photonics Series (Optica Publishing Group, 2001), paper IMC3.

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Abstract

A weak index perturbation changes the imbalance of 3 dB MMI couplers. A parabolic error of 1 % of the step index gives an imbalance of 1 dB . The imbalance of a fabricated MMI is removed by UV-trimming.

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