Control of the properties of directional couplers using proton irradiation

Makoto Fujimaki; Keita Kawabe; Masahiro Suzuki; Koichi Awazu; Yoshimichi Ohki; Junji Tominaga

doi:10.1016/j.nimb.2007.09.032

Control of the properties of directional couplers using proton irradiation

Makoto Fujimaki^*, Keita Kawabe, Masahiro Suzuki, Koichi Awazu, Yoshimichi Ohki, Junji Tominaga

^*Corresponding author for this work

School of Advanced Science and Engineering

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

3 Citations (Scopus)

Abstract

The control of the coupling properties of a directional coupler formed in a planar lightwave circuit by proton irradiation was examined. Irradiation of the cladding between the two cores that constitute the coupling portion causes an increase in the coupling coefficient, whereas subsequent irradiation of the entire coupling portion decreases the coupling coefficient. The change in the coupling coefficient results in changes to the coupling ratios, which depend on the irradiated area and fluence. By adjusting these, the desired coupling property can be obtained. This method can be applied in rectifying fabrication errors in any kind of optical device formed in a planar lightwave circuit.

Original language	English
Pages (from-to)	267-271
Number of pages	5
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	264
Issue number	2
DOIs	https://doi.org/10.1016/j.nimb.2007.09.032
Publication status	Published - 2007 Nov 1

Keywords

Directional coupler
Ion irradiation
Optical communication
Planar lightwave circuit
Property control
Wavelength division multiplexing

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nimb.2007.09.032

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title = "Control of the properties of directional couplers using proton irradiation",

abstract = "The control of the coupling properties of a directional coupler formed in a planar lightwave circuit by proton irradiation was examined. Irradiation of the cladding between the two cores that constitute the coupling portion causes an increase in the coupling coefficient, whereas subsequent irradiation of the entire coupling portion decreases the coupling coefficient. The change in the coupling coefficient results in changes to the coupling ratios, which depend on the irradiated area and fluence. By adjusting these, the desired coupling property can be obtained. This method can be applied in rectifying fabrication errors in any kind of optical device formed in a planar lightwave circuit.",

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T1 - Control of the properties of directional couplers using proton irradiation

AU - Fujimaki, Makoto

AU - Kawabe, Keita

AU - Suzuki, Masahiro

AU - Awazu, Koichi

AU - Ohki, Yoshimichi

AU - Tominaga, Junji

PY - 2007/11/1

Y1 - 2007/11/1

N2 - The control of the coupling properties of a directional coupler formed in a planar lightwave circuit by proton irradiation was examined. Irradiation of the cladding between the two cores that constitute the coupling portion causes an increase in the coupling coefficient, whereas subsequent irradiation of the entire coupling portion decreases the coupling coefficient. The change in the coupling coefficient results in changes to the coupling ratios, which depend on the irradiated area and fluence. By adjusting these, the desired coupling property can be obtained. This method can be applied in rectifying fabrication errors in any kind of optical device formed in a planar lightwave circuit.

AB - The control of the coupling properties of a directional coupler formed in a planar lightwave circuit by proton irradiation was examined. Irradiation of the cladding between the two cores that constitute the coupling portion causes an increase in the coupling coefficient, whereas subsequent irradiation of the entire coupling portion decreases the coupling coefficient. The change in the coupling coefficient results in changes to the coupling ratios, which depend on the irradiated area and fluence. By adjusting these, the desired coupling property can be obtained. This method can be applied in rectifying fabrication errors in any kind of optical device formed in a planar lightwave circuit.

KW - Directional coupler

KW - Ion irradiation

KW - Optical communication

KW - Planar lightwave circuit

KW - Property control

KW - Wavelength division multiplexing

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Control of the properties of directional couplers using proton irradiation

Abstract

Keywords

ASJC Scopus subject areas

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