2010
DOI: 10.1049/el.2010.1595
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827 nm Bragg grating sensor in multimode microstructured polymer optical fibre

Abstract: We report on the fabrication and characterisation of a Bragg grating in multimode microstructured polymer optical fibre with a Bragg wavelength of 827nm. This is the smallest Bragg wavelength reported to date for a polymer optical fibre grating and the relatively low loss of the fibre at this wavelength considerably enhances the utility of the device compared to gratings at longer wavelengths. IntroductionSilica fibre Bragg grating (FBG) sensors have become well established as an important sensing technology [… Show more

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Cited by 51 publications
(42 citation statements)
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“…The Bragg wavelength exhibited a linear response over the strain range 0-3%, with a sensitivity of 0.701 ± 0.003pm/µε calculated by linear regression. This sensitivity is very close to the value of 0.71 pm/µε reported for PMMA 3-ring mPOFBGs at 850nm [49] and 827nm [50], and similar to that of 0.64 pm/µε measured for a TOPAS 2-ring mPOFBG at 870 nm [13]. Moreover, the fiber did not show any hysteresis in the unloading phase, since the forward and reverse curves were perfectly overlapped, as shown in Fig.…”
Section: Strain and Temperature Sensing With The Pc Mpofbgsupporting
confidence: 87%
“…The Bragg wavelength exhibited a linear response over the strain range 0-3%, with a sensitivity of 0.701 ± 0.003pm/µε calculated by linear regression. This sensitivity is very close to the value of 0.71 pm/µε reported for PMMA 3-ring mPOFBGs at 850nm [49] and 827nm [50], and similar to that of 0.64 pm/µε measured for a TOPAS 2-ring mPOFBG at 870 nm [13]. Moreover, the fiber did not show any hysteresis in the unloading phase, since the forward and reverse curves were perfectly overlapped, as shown in Fig.…”
Section: Strain and Temperature Sensing With The Pc Mpofbgsupporting
confidence: 87%
“…An appropriate wavelength regime is around 650 nm, where PMMA has low material loss, but the more common wavelength for POFBGs is around 850 nm, which we will also focus on here [26,27], since the polymer presents high losses at the 1550 nm region [27]. Conventionally, the inscription of POFBGs is made with the phase mask technique using continuous wave (CW) 325 nm HeCd UV lasers [25].…”
Section: Introductionmentioning
confidence: 99%
“…It was first about 5 years later that FBGs at around 850 nm, where the mPOFs have lower loss, were reported [12,13]. Traditionally, POFs, mPOFs, and polymer FBGs have been made of PMMA [1,3,6,[10][11][12][13][14][15][16][17][18][19][20][21], which makes the response of the FBGs dependent on both temperature and humidity [17][18][19][20][21]. This fact, together with the issue of high loss and low operating temperature, has been hindering the application of polymer FBGs in key strain sensing and biosensing areas [8].…”
Section: Introductionmentioning
confidence: 99%