Birefringence in optical fibers formed by proton implantation

Yu, Seung Jun; Suzuki, Masahiro; Ohki, Yoshimichi; Fujimaki, Makoto; Awazu, K.; Yamaguchi, Eisuke; Okude, Satoshi

doi:10.1016/j.nimb.2007.09.044

Cited by 11 publications

(11 citation statements)

References 11 publications

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“…Combining the calculated LET and the experimental calibrated fluence, an absorbed dose of 15 MGy(SiO ) was estimated at an average dose rate of 6 MGy/h. The simulation confirmed also that protons are energetic enough to completely traverse the fiber section and thus preventing the proton implantation in the fiber which induces birefringence in the optical fiber and as a consequence the broadening of the FBG reflected peak [10].…”

Section: A Irradiation Arrangementsupporting

confidence: 57%

Influence of the Fiber Coating Type on the Strain Response of Proton-Irradiated Fiber Bragg Gratings

Currás

Virto

Moya

et al. 2012

IEEE Trans. Nucl. Sci.

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We report on the effect of the fiber coating on the radiation sensitivity of Fiber Bragg Gratings (FBG). For the first time this type of study has been carried out using a 13.5 MeV proton beam up to a fluence of protons/cm (total absorbed dose of 15 MGy). We observed a clear dependence of the radiation sensitivity on the coating, in particular, we have investigated the irradiation induced changes on the strain sensitivity; FBG strain coefficient remains stable for all the fiber within a 5%. This result demonstrates the suitability of FBGs as structural health and deformation monitors in the very hostile environment of the new generation of high-intensity particle physics proton colliders.

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Section: A Irradiation Arrangementsupporting

confidence: 57%

Influence of the Fiber Coating Type on the Strain Response of Proton-Irradiated Fiber Bragg Gratings

Currás

Virto

Moya

et al. 2012

IEEE Trans. Nucl. Sci.

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“…V was estimated. The simulation confirmed also that protons are energetic enough to completely traverse the fiber section and thus preventing the proton implantation in the fiber which induces birefringence in the optical fiber and as a consequence the broadening of the FBG reflected peak [9]. Although the room temperature during irradiation remained stable the sensor's temperature increased due to the intense irradiation and the thermal transfer between the FBG sensors and the also under irradiation aluminum support holding the fibers.…”

Section: A Irradiation Arrangementsupporting

confidence: 55%

Influence of the fiber coating on the proton radiation sensitivity of Fiber Bragg Gratings

Currás

Virto

Moya

et al. 2011

2011 12th European Conference on Radiation and Its Effects on Components and Systems

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We report on the effect of the fiber coating on the radiation sensitivity of Fiber Bragg Gratings (FBG). For the first time this type of study has been carried out using a 13.5 MeV proton beam up to a fluence of 3.3 u 10 15 protons/cm 2 (total absorbed dose of 15 MGy). We observed a clear dependence of the radiation sensitivity on the coating, in particular, we have investigated the irradiation induced changes on the strain sensitivity; FBG strain coefficient remains stable for all the fiber within a 5%. This result demonstrates the suitability of FBGs as displacement transducers in the very hostile environment of the new generation of high-intensity particle physics proton colliders Index Terms-Fiber Bragg Gratings, proton radiation effects

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“…On the other hand, we estimated that the increase in refractive index of an optical fiber core induced by the proton implantation at an acceleration energy of 2.4 MeV to a fluence of 1:5 Â 10 16 cm À2 was approximately 2:0 Â 10 À3 . 10,21) This means that the increase in refractive index induced in the present research is larger than this value. However, the refractive index increase estimated in the present research is still reasonable, if various differences between the present directional coupler and the optical fiber in our previous study, such as the structure and implanted region, are taken into account.…”

Section: Discussionmentioning

confidence: 61%

“…We have reported that proton implantation into silicabased optical devices can functionalize them owing to the densification of the implanted region. [10][11][12] As a preliminary trial, we demonstrated that the coupling ratio of a coupler can be adjusted by implanting protons into an appropriate area at a suitable acceleration energy. 13) In the present research, we further demonstrate that proton implantation can change the coupling ratio periodically and continuously and estimate the increment in coupling coefficient as a function of proton fluence.…”

Section: Introductionmentioning

confidence: 96%

Control of Coupling Ratio by Proton Implantation for a Directional Coupler of Planar-Lightwave-Circuit Type

Yu¹,

Suzuki²,

Ohki³

et al. 2009

Jpn. J. Appl. Phys.

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By implanting protons into a cladding in the coupling region of a directional coupler of the planar-lightwave-circuit type at an acceleration energy that enables the protons to reach the center of the core, the coupling ratio of the coupler is changed periodically and continuously by increasing proton fluence. In the case of two optical waveguides formed in a planar lightwave circuit with a mutual spacing too large for optical coupling, proton implantation into the cladding between the waveguides induces optical coupling between them. These results indicate that the coupling ratio of a directional coupler can be controlled by ion implantation.

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Birefringence in optical fibers formed by proton implantation

Cited by 11 publications

References 11 publications

Influence of the Fiber Coating Type on the Strain Response of Proton-Irradiated Fiber Bragg Gratings

Influence of the Fiber Coating Type on the Strain Response of Proton-Irradiated Fiber Bragg Gratings

Influence of the fiber coating on the proton radiation sensitivity of Fiber Bragg Gratings

Control of Coupling Ratio by Proton Implantation for a Directional Coupler of Planar-Lightwave-Circuit Type

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