High-temperature sensitivity of long-period gratings in B-Ge codoped fiber

Xuewen Shu*, Thomas D.P. Allsop, Bashir Gwandu, Lin Zhang, Ian Bennion

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We report an investigation of thermal properties of long-period fiber gratings (LPFGs) of various periods fabricated in the conventional B-Ge codoped fiber. It has been found that the temperature sensitivity of the LPFGs produced in the B-Ge fiber can be significantly enhanced as compared with the standard telecom fiber. A total of 27.5-nm spectral shift was achieved from only 10 °C change in temperature for an LPFG with 240-μm period, demonstrating a first ever reported high sensitivity of 2.75 nm/°C. Such an LPFG may lead to high-efficiency and low-cost thermal/electrical tunable loss filters or sensors with extremely high-temperature resolution. The nonlinear thermal response of the supersensitive LPG was also reported and first explained.

Original languageEnglish
Pages (from-to)818-820
Number of pages3
JournalIEEE Photonics Technology Letters
Volume13
Issue number8
DOIs
Publication statusPublished - Aug 2001

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gratings
fibers
Fibers
Temperature
Penicillin G Benzathine
Liquefied petroleum gas
Thermodynamic properties
thermodynamic properties
filters
temperature
sensitivity
shift
sensors
Sensors
Costs
Hot Temperature

Keywords

  • fiber Bragg gratings
  • long-period fiber grating
  • photosensitive fibers
  • temperature sensors
  • tunable filters

Cite this

Shu, Xuewen ; Allsop, Thomas D.P. ; Gwandu, Bashir ; Zhang, Lin ; Bennion, Ian. / High-temperature sensitivity of long-period gratings in B-Ge codoped fiber. In: IEEE Photonics Technology Letters. 2001 ; Vol. 13, No. 8. pp. 818-820.
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abstract = "We report an investigation of thermal properties of long-period fiber gratings (LPFGs) of various periods fabricated in the conventional B-Ge codoped fiber. It has been found that the temperature sensitivity of the LPFGs produced in the B-Ge fiber can be significantly enhanced as compared with the standard telecom fiber. A total of 27.5-nm spectral shift was achieved from only 10 °C change in temperature for an LPFG with 240-μm period, demonstrating a first ever reported high sensitivity of 2.75 nm/°C. Such an LPFG may lead to high-efficiency and low-cost thermal/electrical tunable loss filters or sensors with extremely high-temperature resolution. The nonlinear thermal response of the supersensitive LPG was also reported and first explained.",
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High-temperature sensitivity of long-period gratings in B-Ge codoped fiber. / Shu, Xuewen; Allsop, Thomas D.P.; Gwandu, Bashir ; Zhang, Lin; Bennion, Ian.

In: IEEE Photonics Technology Letters, Vol. 13, No. 8, 08.2001, p. 818-820.

Research output: Contribution to journalArticle

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AU - Shu, Xuewen

AU - Allsop, Thomas D.P.

AU - Gwandu, Bashir

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