In-situ mitigation of radiation-induced attenuation in optical fiber used for sensing at nuclear facilities

Reinhold Z. Povilaitis; Keith Holbert

doi:10.1117/12.2188585

In-situ mitigation of radiation-induced attenuation in optical fiber used for sensing at nuclear facilities

Reinhold Z. Povilaitis, Keith Holbert

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The ionizing radiation environment in a nuclear reactor containment building or geological waste repository may result in saturation of the radiation-induced attenuation (RIA) in fiber optic cables. Room temperature irradiations to Mrad doses were carried out to quantify RIA recovery at both ambient and elevated temperatures. Additional experiments sought to establish a reduction in RIA beyond recovery obtained by thermal annealing alone by incrementally increasing injected light power from 1 μW to 12 μW over varying time intervals. Results indicate that total possible signal recovery under such conditions is ∼70% and is dominated by thermal annealing of short-lived color centers with supplemental low-intensity (μW) photobleaching providing little to no additional benefit.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Publisher	SPIE
Volume	9573
ISBN (Print)	9781628417395
DOIs	https://doi.org/10.1117/12.2188585
State	Published - 2015
Event	Optomechanical Engineering 2015 - San Diego, United States Duration: Aug 10 2015 → Aug 12 2015

Other

Other	Optomechanical Engineering 2015
Country/Territory	United States
City	San Diego
Period	8/10/15 → 8/12/15

Keywords

Anneal
Attenuation
Fiber optic
Photobleaching

ASJC Scopus subject areas

Applied Mathematics
Computer Science Applications
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1117/12.2188585

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title = "In-situ mitigation of radiation-induced attenuation in optical fiber used for sensing at nuclear facilities",

abstract = "The ionizing radiation environment in a nuclear reactor containment building or geological waste repository may result in saturation of the radiation-induced attenuation (RIA) in fiber optic cables. Room temperature irradiations to Mrad doses were carried out to quantify RIA recovery at both ambient and elevated temperatures. Additional experiments sought to establish a reduction in RIA beyond recovery obtained by thermal annealing alone by incrementally increasing injected light power from 1 μW to 12 μW over varying time intervals. Results indicate that total possible signal recovery under such conditions is ∼70% and is dominated by thermal annealing of short-lived color centers with supplemental low-intensity (μW) photobleaching providing little to no additional benefit.",

keywords = "Anneal, Attenuation, Fiber optic, Photobleaching",

author = "Povilaitis, {Reinhold Z.} and Keith Holbert",

year = "2015",

doi = "10.1117/12.2188585",

language = "English (US)",

isbn = "9781628417395",

volume = "9573",

booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

note = "Optomechanical Engineering 2015 ; Conference date: 10-08-2015 Through 12-08-2015",

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TY - GEN

T1 - In-situ mitigation of radiation-induced attenuation in optical fiber used for sensing at nuclear facilities

AU - Povilaitis, Reinhold Z.

AU - Holbert, Keith

PY - 2015

Y1 - 2015

N2 - The ionizing radiation environment in a nuclear reactor containment building or geological waste repository may result in saturation of the radiation-induced attenuation (RIA) in fiber optic cables. Room temperature irradiations to Mrad doses were carried out to quantify RIA recovery at both ambient and elevated temperatures. Additional experiments sought to establish a reduction in RIA beyond recovery obtained by thermal annealing alone by incrementally increasing injected light power from 1 μW to 12 μW over varying time intervals. Results indicate that total possible signal recovery under such conditions is ∼70% and is dominated by thermal annealing of short-lived color centers with supplemental low-intensity (μW) photobleaching providing little to no additional benefit.

AB - The ionizing radiation environment in a nuclear reactor containment building or geological waste repository may result in saturation of the radiation-induced attenuation (RIA) in fiber optic cables. Room temperature irradiations to Mrad doses were carried out to quantify RIA recovery at both ambient and elevated temperatures. Additional experiments sought to establish a reduction in RIA beyond recovery obtained by thermal annealing alone by incrementally increasing injected light power from 1 μW to 12 μW over varying time intervals. Results indicate that total possible signal recovery under such conditions is ∼70% and is dominated by thermal annealing of short-lived color centers with supplemental low-intensity (μW) photobleaching providing little to no additional benefit.

KW - Anneal

KW - Attenuation

KW - Fiber optic

KW - Photobleaching

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DO - 10.1117/12.2188585

M3 - Conference contribution

AN - SCOPUS:84951103616

SN - 9781628417395

VL - 9573

BT - Proceedings of SPIE - The International Society for Optical Engineering

PB - SPIE

T2 - Optomechanical Engineering 2015

Y2 - 10 August 2015 through 12 August 2015

ER -

In-situ mitigation of radiation-induced attenuation in optical fiber used for sensing at nuclear facilities

Abstract

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Keywords

ASJC Scopus subject areas

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