Spectral response of locally pressed fiber Bragg grating

Torres, Pedro; Valente, L.C.G.

doi:10.1016/s0030-4018(02)01567-5

Cited by 35 publications

(27 citation statements)

References 13 publications

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“…This spectral response is generated by the optical beating between the spectra of the unperturbed grating regions, modulated by the phase shift induced by the loading. The main difference, here, with previously reported works on phase-shifted FBG [11][12][13], is when the birefringence axes are rotated, which may happen if the loading is along a direction different to the fast or slow axis of the fiber, and then there is coupling between polarization modes as shown in Fig. 3(b).…”

Section: Response Of Fbg Written In Specialty Single-mode Fibersmentioning

confidence: 71%

Spectral Response of FBG Written in Specialty Single-Mode Fibers

Torres¹,

Botero-Cadavid²,

Vélez³

2008

AIP Conference Proceedings

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Abstract. In this work, we describe the spectral properties of fiber Bragg gratings (FBGs) in Hi-Bi PANDA fibers subjected to diametrical compression and fibers with internal electrodes, as two examples of the facilities offered by specialty single-mode fibers for processing optical signals. Due to the complex structure of the fibers, the induced effects on the fiber effective birefringence are presented and discussed, based on numerical analysis with the finite element method.

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Section: Response Of Fbg Written In Specialty Single-mode Fibersmentioning

confidence: 71%

Spectral Response of FBG Written in Specialty Single-Mode Fibers

Torres¹,

Botero-Cadavid²,

Vélez³

2008

AIP Conference Proceedings

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“…The spectral hole appears in the Bragg gratings [14] and narrow bandpass filtering in optical fiber communication [8], with increasing the thickness of the chiral STF. The spectral hole in the Bragg regime produced narrow passband which is die out and a new ultranarrow spectrum is occurring in the Bragg regime of free space wavelength due to increasing thickness [15].…”

Section: Introductionmentioning

confidence: 99%

Band-Reject Filters for Bragg Mirror Using Perturbed Chiral Sculptured Thin Films

Muhammad¹,

Ahmad²,

Song³

2016

JEE

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Abstract:We have theoretically simulated the optical properties of perturbed chiral STF (sculptured thin film) with and without defect. It was revealed that such STFs could act as band-reject filters with tunable Bragg regime of free space wavelengths and different bandwidth through changing the vapor incident angle during glancing angle deposition process. These Bragg filters are narrowing due to the change of vapor incident angle for circularly polarized light. Interestingly, as the vapor incident angle increased, the band-rejected filter exhibited to decrease the bandwidth and shifted in the Bragg regime, indicating that such STF nanostructures have high potential for behaving as unique polarization insensitive Bragg mirror.

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“…Birefringence can also be induced when the grating is exposed to external influences, such as diametric loading [10,11]. Different grating types have already been used including sampled [ [12] chirped [13,14], and phase shifted gratings [15] to measure distributed, applied load. Common to all these techniques is the fact that they analyze changes in reflection spectra to get information about the induced birefringence, which is directly related to the applied load [11].…”

Section: Introductionmentioning

confidence: 99%

Distributed measurements of fiber birefringence and diametric load using optical low-coherence reflectometry and fiber gratings

Ćorić¹,

Limberger²,

Salathé³

2006

Opt. Express

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Polarization sensitive optical low-coherence reflectometry (OLCR) is used for measuring the complex fiber Bragg gratings (FBG) reflection coefficient. We determine the beat length directly from oscillations in the OLCR amplitude with a resolution of 10 -6 and a spatial resolution only limited by the minimum beat length or the coherence length of the light source. Using the OLCR amplitude and phase in combination with an inverse scattering algorithm the birefringence is retrieved with a resolution of 2×10 -5 while the spatial resolution is 25 μm. The two developed techniques are applied for measuring position, magnitude and footprint of induced birefringence of an FBG under uniform and nonuniform diametric loading.

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Spectral response of locally pressed fiber Bragg grating

Cited by 35 publications

References 13 publications

Spectral Response of FBG Written in Specialty Single-Mode Fibers

Spectral Response of FBG Written in Specialty Single-Mode Fibers

Band-Reject Filters for Bragg Mirror Using Perturbed Chiral Sculptured Thin Films

Distributed measurements of fiber birefringence and diametric load using optical low-coherence reflectometry and fiber gratings

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