Influence of higher order modes on angled-facet amplifiers

Z. Wang; B. Mikkelsen; Kristian Stubkjær

doi:10.1109/68.82114

Influence of higher order modes on angled-facet amplifiers

Z. Wang, B. Mikkelsen, Kristian Stubkjær

Technical University of Denmark

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Abstract

The influence of the first-order mode on the residual reflectivity of angled-facet amplifiers is analyzed. For a 7 degrees angled-facet ridge waveguide amplifier with a single-layer antireflective (AR) coating, a gain ripple lower than 1-dB at 25-dB gain can be obtained independent of the polarization, even in the presence of a first-order mode with a 15-dB gain. The tolerances for the thickness and refractive index of the AR coating are reduced by a factor of three compared to operation in the fundamental mode only. The influence of the higher order mode can virtually be suppressed by increasing the facet angles to 10 degrees

Original language	English
Journal	I E E E Photonics Technology Letters
Volume	3
Issue number	4
Pages (from-to)	366-368
ISSN	1041-1135
DOIs	https://doi.org/10.1109/68.82114
Publication status	Published - 1991

Bibliographical note

Copyright: 1991 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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abstract = "The influence of the first-order mode on the residual reflectivity of angled-facet amplifiers is analyzed. For a 7 degrees angled-facet ridge waveguide amplifier with a single-layer antireflective (AR) coating, a gain ripple lower than 1-dB at 25-dB gain can be obtained independent of the polarization, even in the presence of a first-order mode with a 15-dB gain. The tolerances for the thickness and refractive index of the AR coating are reduced by a factor of three compared to operation in the fundamental mode only. The influence of the higher order mode can virtually be suppressed by increasing the facet angles to 10 degrees",

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AU - Wang, Z.

AU - Mikkelsen, B.

AU - Stubkjær, Kristian

N1 - Copyright: 1991 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

PY - 1991

Y1 - 1991

N2 - The influence of the first-order mode on the residual reflectivity of angled-facet amplifiers is analyzed. For a 7 degrees angled-facet ridge waveguide amplifier with a single-layer antireflective (AR) coating, a gain ripple lower than 1-dB at 25-dB gain can be obtained independent of the polarization, even in the presence of a first-order mode with a 15-dB gain. The tolerances for the thickness and refractive index of the AR coating are reduced by a factor of three compared to operation in the fundamental mode only. The influence of the higher order mode can virtually be suppressed by increasing the facet angles to 10 degrees

AB - The influence of the first-order mode on the residual reflectivity of angled-facet amplifiers is analyzed. For a 7 degrees angled-facet ridge waveguide amplifier with a single-layer antireflective (AR) coating, a gain ripple lower than 1-dB at 25-dB gain can be obtained independent of the polarization, even in the presence of a first-order mode with a 15-dB gain. The tolerances for the thickness and refractive index of the AR coating are reduced by a factor of three compared to operation in the fundamental mode only. The influence of the higher order mode can virtually be suppressed by increasing the facet angles to 10 degrees

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DO - 10.1109/68.82114

M3 - Journal article

SN - 1041-1135

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SP - 366

EP - 368

JO - I E E E Photonics Technology Letters

JF - I E E E Photonics Technology Letters

IS - 4

ER -

Influence of higher order modes on angled-facet amplifiers

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