Multimaterial polarization maintaining optical fibers fabricated with the powder-in-tube technology

Kudinova, Maryna; Humbert, Georges; Auguste, Jean‐Louis; Delaizir, Gaëlle

doi:10.1364/ome.7.003780

Cited by 9 publications

(12 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fe-doped LNPws also show, after a post-thermal treatment in a controlled reducing atmosphere, a rather strong ferromagnetic response at room temperature for a doping concentration of the order of 1% mol; this may be considered a first report of the manifestation of ferromagnetism in nanocrystalline LNPws within the regime of very low doping concentrations [11]. Yet in another application based on the powder-in-tube method, a novel fabrication process has been demonstrated for the realization of polarization-maintaining optical fibers [12]. Comprehension of the main mechanism behind this technology, and by looking at the LN mechanical properties [3], it can easily be seen that LNPws are, in principle, good candidates for the fabrication of this type of optical components.…”

Section: Introductionmentioning

confidence: 69%

Determination of the Chemical Composition of Lithium Niobate Powders

et al. 2019

View full text Add to dashboard Cite

Existent methods for determining the composition of lithium niobate single crystals are mainly based on their variations due to changes in their electronic structure, which accounts for the fact that most of these methods rely on experimental techniques using light as the probe. Nevertheless, these methods used for single crystals fail in accurately predicting the chemical composition of lithium niobate powders due to strong scattering effects and randomness. In this work, an innovative method for determining the chemical composition of lithium niobate powders, based mainly on the probing of secondary thermodynamic phases by X-ray diffraction analysis and structure refinement, is employed. Its validation is supported by the characterization of several samples synthesized by the standard and inexpensive method of mechanosynthesis. Furthermore, new linear equations are proposed to accurately describe and determine the chemical composition of this type of powdered material. The composition can now be determined by using any of four standard characterization techniques: X-Ray Diffraction (XRD), Raman Spectroscopy (RS), UV-vis Diffuse Reflectance (DR), and Differential Thermal Analysis (DTA). In the case of the existence of a previous equivalent description for single crystals, a brief analysis of the literature is made.

show abstract

Section: Introductionmentioning

confidence: 69%

Determination of the Chemical Composition of Lithium Niobate Powders

et al. 2019

View full text Add to dashboard Cite

show abstract

“…To fabricate the SAPs, we have used a glass material composed of 70SiO 2 -20Al 2 O 3 -10La 2 O 3 % mol (SAL). This SAL glass has a coefficient of thermal expansion (∼5.3×10 −6 K −1 ) ten times higher than the silica one (∼ 0.54×10 −6 K −1 ) that generates a significant mechanical stress in the fiber [14].…”

Section: Fabrication Of Disruptive Birefringent Optical Fibersmentioning

confidence: 98%

“…where λ is the central wavelength (between two dips). The dip wavelengths λ occur when = T 0, so that: in [14], it is worth noticing that the birefringence is only induced by the SAP, since a similar fiber with empty SAPs (air holes) does not exhibit a measurable birefringence.…”

Section: Birefringence Measurementsmentioning

confidence: 99%

Impact of H₂ gas on disruptive birefringence optical fibers with embedded Palladium particles for developing robust sensors

et al. 2019

Self Cite

View full text Add to dashboard Cite

Optical fiber sensors of hydrogen gas (H 2 ) are conventionally based on the reaction of a sensitive material deposited on the surface of a fiber. Long-term applications of H 2 monitoring require more robust configurations, less sensitive to the degradations of the sensitive layer. To overcome this issue, we develop disruptive polarisation-maintaining optical fibers composed of a sensitive material (Palladium, Pd) integrated into the silica cladding. We present the development of two Panda-type optical fibers with or without embedded Pd particles. These fibers have been fabricated for evaluating, through the measurement of the birefringence, the contribution of Pd particles on the detection of H 2 gas. We have specially developed a gas chamber for measuring on-line the detection of H 2 during its diffusion into the fiber. Dynamic comparisons between both fibers demonstrate the contribution of Pd particles resulting in a faster response time (of about 20 h for our experimental conditions). These results pave the way to the realization of robust optical fibers with enhanced sensitivity to H 2 gas for developing sensing systems compatible with long-term hydrogen monitoring applications in extreme and harsh environments, such as radioactive waste repositories.

show abstract

“…Considering the thermo-mechanical compatibility between SAPs and pure silica cladding, most SAPs are made of borosilicate glass whose thermal expansion coefficient (∼

K −1 ) is about two times higher than that of pure silica (

K −1 ) [ 19 , 20 ]. Recently, a new kind of lanthanum-aluminum co-doped silicate (SiO 2 -Al 2 O 3 -La 2 O 3 , SAL) glass was used as SAPs in a PANDA-type PMF [ 20 , 21 ]. The thermal expansion coefficient of this SAL glass was calibrated to be around

K −1 , which is almost ten times that of silica and five times higher than that of borosilicate glass.…”

Section: Introductionmentioning

confidence: 99%

Bragg Grating Assisted Sagnac Interferometer in SiO2-Al2O3-La2O3 Polarization-Maintaining Fiber for Strain–Temperature Discrimination

Kudinova

et al. 2020

Sensors

Self Cite

View full text Add to dashboard Cite

Polarization-maintaining fibers (PMFs) have always received great attention in fiber optic communication systems and components which are sensitive to polarization. Moreover, they are widely applied for high-accuracy detection and sensing devices, such as fiber gyroscope, electric/magnetic sensors, multi-parameter sensors, and so on. Here, we demonstrated the combination of a fiber Bragg grating (FBG) and Sagnac interference in the same section of a new type of PANDA-structure PMF for the simultaneous measurement of axial strain and temperature. This specialty PMF features two stress-applied parts made of lanthanum-aluminum co-doped silicate (SiO2-Al2O3-La2O3, SAL) glass, which has a higher thermal expansion coefficient than borosilicate glass used commonly in commercial PMFs. Furthermore, the FBG inscribed in this SAL PMF not only aids the device in discriminating strain and temperature, but also calibrates the phase birefringence of the SAL PMF more precisely thanks to the much narrower bandwidth of grating peaks. By analyzing the variation of wavelength interval between two FBG peaks, the underlying mechanism of the phase birefringence responding to temperature and strain is revealed. It explains exactly the sensing behavior of the SAL PMF based Sagnac interference dip. A numerical simulation on the SAL PMF’s internal stress and consequent modal effective refractive indices was performed to double confirm the calibration of fiber’s phase birefringence.

show abstract

Multimaterial polarization maintaining optical fibers fabricated with the powder-in-tube technology

Cited by 9 publications

References 27 publications

Determination of the Chemical Composition of Lithium Niobate Powders

Determination of the Chemical Composition of Lithium Niobate Powders

Impact of H₂ gas on disruptive birefringence optical fibers with embedded Palladium particles for developing robust sensors

Bragg Grating Assisted Sagnac Interferometer in SiO2-Al2O3-La2O3 Polarization-Maintaining Fiber for Strain–Temperature Discrimination

Contact Info

Product

Resources

About

Multimaterial polarization maintaining optical fibers fabricated with the powder-in-tube technology

Cited by 9 publications

References 27 publications

Determination of the Chemical Composition of Lithium Niobate Powders

Determination of the Chemical Composition of Lithium Niobate Powders

Impact of H2 gas on disruptive birefringence optical fibers with embedded Palladium particles for developing robust sensors

Bragg Grating Assisted Sagnac Interferometer in SiO2-Al2O3-La2O3 Polarization-Maintaining Fiber for Strain–Temperature Discrimination

Contact Info

Product

Resources

About

Impact of H₂ gas on disruptive birefringence optical fibers with embedded Palladium particles for developing robust sensors