Thermal decay characteristics of strong fiber Bragg gratings showing high-temperature sustainability

Shen, Yonghang; He, Jinglei; Qiu, Yanqing; Zhao, Weixia; Chen, Shuying; Sun, Tao; Grattan, K. T. V.

doi:10.1364/josab.24.000430

Cited by 27 publications

(13 citation statements)

References 26 publications

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“…Previous studies have already established that the operable temperature of FBGs can be increased by several means, including tailoring the glass composition [Shen et al 2007;Butov et al 2006], pre-processing with seed irradiation [Åslund & Canning 2000;Canning et al 2001], the formation of type-In (or type IIA) [Xie et al 1993;Dong et al 1996;Groothoff & Canning 2004] gratings and type-II [Archambault et al 1993;Hill et al 1995] gratings, including those inscribed using femtosecond IR lasers [Grobnic et al 2006]. For a general review on photosensitivity and grating types, see [Canning 2008a].…”

Section: Historical Backgroundmentioning

confidence: 99%

Regenerated Fibre Bragg Gratings

Canning¹,

Bandyopadhyay²,

Biswas³

et al. 2010

Frontiers in Guided Wave Optics and Optoelectronics

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Section: Historical Backgroundmentioning

confidence: 99%

Regenerated Fibre Bragg Gratings

Canning¹,

Bandyopadhyay²,

Biswas³

et al. 2010

Frontiers in Guided Wave Optics and Optoelectronics

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“…Previous studies have already established that operable temperature of FBGs can be increased by several means: e.g., through tailoring the glass composition [1], [2], or the process of pre-irradiation [3], the formation of type-II [4] and type-IIA [5,6] grating or by inscribing grating using femtosecond IR lasers [7]. There is another different variant with superior high temperature stability referred to as chemical composition grating (CCG) [8].…”

Section: Introductionmentioning

confidence: 99%

Fiber Bragg grating sensor for high temperature application

Canning

Bandyopadhyay

Stevenson

et al. 2008

OECC/ACOFT 2008 - Joint Conference of the Opto-Electronics and Communications Conference and the Australian Conference on Optic

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Regenerated gratings seeded by type I gratings withstand temperatures beyond 1000 0 C. A new approach to increasing temperature resistance of ultra high T stable gratings is presented. IntroductionDevelopment of fibre Bragg gratings (FBGs) which are suitable for high temperature applications is an increasingly important researcher driver in sensing. Previous studies have already established that operable temperature of FBGs can be increased by several means: e.g., through tailoring the glass composition [1],[2], or the process of pre-irradiation [3], the formation of type-II [4] and type-IIA [5,6] grating or by inscribing grating using femtosecond IR lasers [7]. There is another different variant with superior high temperature stability referred to as chemical composition grating (CCG) [8]. It was shown that a periodic index modulation can be regenerated after erasure of the UV induced type-I grating written in H-loaded germanosilicate fibre that contains fluorine if it is annealed at temperature as high as ~1000 0 C. The prediction was a local reduction of fluorine in the UV-exposed zones at that high temperature through diffusion of hydrogen fluoride. A subsequent study on annealing of type-I gratings at high temperature, however, has shown that the presence of fluorine is not necessary for this regeneration of index modulation [9]. So-called chemical composition gratings (CCG) are found in Er-doped fiber with other dopants as Ge, Al and Sn. Very recently this phenomenon of regeneration has been found in simple H-loaded germanosilicate fibre only [10].We present results while annealing FBGs written in hydrogen loaded Ge-doped fiber at high temperature that have noticeable differences with those reported in [10]. They show that more in depth investigations are required to properly understand and optimise the regeneration processconstituent parameters such as doping concentration, H-loading condition, the optimal strength of the initial "seed" type-I grating, and finally, the annealing conditions to optimize the strength and spectrum of the regenerated grating. This new structure has shown to be operable to the glass softening temperature of the fibre core and is easy to fabricate compared to other methods.

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“…Shen [17] used 248nm laser irradiate Sb 3 + -doped fiber, and this kind of fiber is of superior stability than sn 4 + -doped fiber. They also write gratings in indium(In3 +) doped [18]and bismuth (Bi3 +) doped [19] fibers, and the reflectivity of the gratings is over 20% after annealing at high temperature of 900℃ for 24h. In conclusion, the production process is easy and convenient.…”

Section: Special Doped Optical Fiber Gratingmentioning

confidence: 99%