Radio-frequency interrogation of a fiber Bragg grating sensor in the configuration of a fiber laser with external cavities

Vazquez-Sanchez, R. A.; Kuzin, E. A.; García-Lara, C.; May-Alarcon, Manuel; Camas-Anzueto, J.L.; Righini, Giancarlo C.; Miridonov, Serguei V.

doi:10.1016/j.ijleo.2009.06.006

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…In addition to use FBGs as reflectors, wavelength tuning and fiber sensing are the two major applications for gratings fiber [4]. In these applications, the FBG is controlled by an external environment such as temperature [5][6][7]. The sensitivity of the Bragg wavelength to temperature arises from the change in period associated with the thermal expansion of the fiber coupled with a change in the refractive index arising from the thermo-optic [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analysis of Thermal Dependence of the Spectral Response of Polymer Optical Fiber Bragg Gratings

Hisham¹

2016

IJEEE

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The thermal dependence of the spectral response (i.e. transmission, reflection and time delay (τ r) responses) of uniform polymer optical fiber (POF) Bragg gratings has been investigated. In addition to the temperature dependence, the effects of grating strength (kL g) and fiber index modulation (∆n) have been investigated. Besides high capability of tunable wavelength due to the unique large and negative thermo-optic coefficient of POF, the spectral response for POF Bragg gratings show high stability and larger spectrum bandwidth with temperature variation compare with the silica optical fiber (SOF) Bragg gratings, especially with the increase of the kL g value. It was found that by increasing kL g , the peak reflectance value increases and the bandwidth of the Bragg reflector become narrower. Also it's shown by increasing the kL g value, τ r deceasing significantly and reach its minimum value at the designed wavelength (λ B). Furthermore, the τ r for POF Bragg gratings is less than that for SOF Bragg gratings at the same value of kL g. Also it's found that the peak reflectivity value increases to around 60% when the ∆n value increases from 1ˣ10-4 to 5ˣ10-4 .

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Section: Introductionmentioning

confidence: 99%

“…of the grating period. The term inside the parenthesis in(5) and (6) is the dc self-coupling coefficient, and is given by . For single-mode Bragg grating reflector with sinusoidal variation of effective index change along the fiber axis, we can use the simple relation for the coupling coefficient k c[12] …”

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confidence: 99%

Numerical Analysis of Thermal Dependence of the Spectral Response of Polymer Optical Fiber Bragg Gratings

Hisham¹

2016

IJEEE

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“…[4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] In this laser, the lasing wavelength is determine only by the Bragg wavelength of the fiber grating (FG) and this Bragg wavelength has a small temperature dependence of about 10 pm/K, [4][5][6]8,16,17,21) which is about 1/10 of that of the conventional DFB laser and has no dependence on the injection current. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] In this laser, the lasing wavelength is determine only by the Bragg wavelength of the fiber grating (FG) and this Bragg wavelength has a small temperature dependence of about 10 pm/K, [4][5][6]8,16,17,21) which is about 1/10 of that of the conventional DF...…”

Section: Introductionmentioning

confidence: 99%

Characterization of small-signal intensity modulation of single-mode fiber grating Fabry-Perot laser source

Hisham

Abas

Mahdiraji

et al. 2012

OPT REV

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A comprehensive study on the small-signal intensity modulation (IM) characteristics of a fiber grating Fabry-Perot (FGFP) laser is numerically investigated. The effect of external optical feedback (OFB), temperature, injection current, cavity volume, nonlinear gain compression factor, and fiber grating (FG) parameters on IM characteristics are presented. The temperature dependence (TD) of IM is calculated according to the TD of laser cavity parameters instead of using the well-known Parkove relationship. It has been shown that the optimum external fiber length (L ext ) is 3.1 cm. The optimum range of working temperature for FGFP laser is between 23 to 27 C. We also show that by increasing the laser injection current from 10 to 60 mA, the IM peak amplitude decreased from 6.3 to 0.2 dB and the relaxationoscillation frequency (ROF) is shifted from 1.2 GHz towards higher frequency of 5.48 GHz. In addition, the AR coating reflectivity and gain compression factor have no significant effect on the IM. The study indicates that a stable operation and excellent modulation characteristic can be obtained after optimization process.

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Characterization of Turn-On Time Delay in a Fiber Grating Fabry–Perot Lasers

et al. 2012

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Radio-frequency interrogation of a fiber Bragg grating sensor in the configuration of a fiber laser with external cavities

Cited by 5 publications

References 16 publications

Numerical Analysis of Thermal Dependence of the Spectral Response of Polymer Optical Fiber Bragg Gratings

Numerical Analysis of Thermal Dependence of the Spectral Response of Polymer Optical Fiber Bragg Gratings

Characterization of small-signal intensity modulation of single-mode fiber grating Fabry-Perot laser source

Characterization of Turn-On Time Delay in a Fiber Grating Fabry–Perot Lasers

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