Fast and stable gratings inscription in POFs made of different materials with pulsed 248 nm KrF laser

Marques, Carlos; Min, Rui; Leal‐Junior, Arnaldo; Antunes, Paulo; Fasano, Andrea; Woyessa, Getinet; Nielsen, Kristian; Rasmussen, Henrik Koblitz; Ortega, B.; Bang, Ole

doi:10.1364/oe.26.002013

Cited by 65 publications

(32 citation statements)

References 39 publications

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“…In this paper, we present the first experimental results on Bragg gratings fabrication in undoped PMMA mPOFs with two, three and five hexagonal rings using a low cost Nd:YAG laser system operating at 266 nm wavelength. The impact of scattering in different hexagonal ring structures on UV fiber irradiation has been analyzed [30]. The characterization of the strain, temperature and humidity is also supplied for potential sensing applications.…”

Section: Introductionmentioning

confidence: 99%

Inscription of Bragg gratings in undoped PMMA mPOF with Nd:YAG laser at 266 nm wavelength

et al. 2019

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We present the first Bragg gratings fabricated in two, three and five rings undoped PMMA microstructured polymer optical fibres (mPOFs) with relative low cost 266 nm Nd:YAG laser in the 850 nm region. The fibers were connectorised with commercial ferrules for easy coupling with silica patch cables. Temperature, humidity and strain sensitivities are measured and also the impact of ring structure and the diameter of POF on the characterization measurements are studied for potential applications. We also analyzed the effect of the number of hexagonal rings structure in gratings fabrication, noticing that larger number of rings lead to more difficulties to obtain strong gratings, where we consider this performance due to the scattering effects. We demonstrate Bragg gratings fabrication in 5-rings structure mPOF after 6 min by using 266 nm Nd:YAG laser whereas no Bragg gratings have been fabricated so far using 325 nm He-Cd laser system. Up to 30 dB relative reflected power gratings are obtained in two rings mPOF, showing good time stability and promising results for undoped mPOF applications.

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Section: Introductionmentioning

confidence: 99%

Inscription of Bragg gratings in undoped PMMA mPOF with Nd:YAG laser at 266 nm wavelength

et al. 2019

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“…A 325 nm laser is typically used to inscribe FBGs on polymer optical fiber, especially PMMA-based POFs. Because polymers are soft and some are photosensitive over a broad UV range, UV lasers emitting at 193 nm or 248 nm can also be used to make gratings provided that periodic modulation (e.g., in refractive index or in physical deformation) can be induced [94]. A red laser at 633 nm is good for chalcogenide fibers because this material (e.g., As 2 Se 3 ) is photosensitive to this wavelength [29].…”

Section: Fabrication Techniquesmentioning

confidence: 99%

Multifunctional Smart Optical Fibers: Materials, Fabrication, and Sensing Applications

et al. 2019

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This paper presents a review of the development of optical fibers made of multiple materials, particularly including silica glass, soft glass, polymers, hydrogels, biomaterials, Polydimethylsiloxane (PDMS), and Polyperfluoro-Butenylvinyleth (CYTOP). The properties of the materials are discussed according to their various applications. Typical fabrication techniques for specialty optical fibers based on these materials are introduced, which are mainly focused on extrusion, drilling, and stacking methods depending on the materials' thermal properties. Microstructures render multiple functions of optical fibers and bring more flexibility in fiber design and device fabrication. In particular, micro-structured optical fibers made from different types of materials are reviewed. The sensing capability of optical fibers enables smart monitoring. Widely used techniques to develop fiber sensors, i.e., fiber Bragg grating and interferometry, are discussed in terms of sensing principles and fabrication methods. Lastly, sensing applications in oil/gas, optofluidics, and particularly healthcare monitoring using specialty optical fibers are demonstrated. In comparison with conventional silica-glass single-mode fiber, state-of-the-art specialty optical fibers provide promising prospects in sensing applications due to flexible choices in materials and microstructures.

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“…and diphenyl sulfide (DPS) (5% mole) to enhance the photosensitivity and increase the refractive index [98]. Marques et al [104] reported the inscription of gratings in POFs made of different materials (TOPAS, ZEONEX, and Polycarbonate) under 248 nm wavelength, and compared it with the same fiber irradiation under 325 nm, resulting in a reduction of the irradiation time by at least 16 times (Table 2) and better stability when 248 nm wavelength is employed. Marques et al [104] reported the inscription of gratings in POFs made of different materials (TOPAS, ZEONEX, and Polycarbonate) under 248 nm wavelength, and compared it with the same fiber irradiation under 325 nm, resulting in a reduction of the irradiation time by at least 16 times (Table 2) and better stability when 248 nm wavelength is employed.…”

Section: Different Polymer Materialsmentioning

confidence: 99%

“…Marques et al [104] reported the inscription of gratings in POFs made of different materials (TOPAS, ZEONEX, and Polycarbonate) under 248 nm wavelength, and compared it with the same fiber irradiation under 325 nm, resulting in a reduction of the irradiation time by at least 16 times (Table 2) and better stability when 248 nm wavelength is employed. Marques et al [104] reported the inscription of gratings in POFs made of different materials (TOPAS, ZEONEX, and Polycarbonate) under 248 nm wavelength, and compared it with the same fiber irradiation under 325 nm, resulting in a reduction of the irradiation time by at least 16 times (Table 2) and better stability when 248 nm wavelength is employed. Min et al [58] obtained the first 600 nm wavelength grating with commercial CYTOP POF, using a 248 nm KrF laser system with a repetition of 40 Hz and average pulse energy of ~0.60 mJ during ~60 min, as shown in Figure 4, with potential applications in the visible range.…”

Section: Different Polymer Materialsmentioning

confidence: 99%

Latest Achievements in Polymer Optical Fiber Gratings: Fabrication and Applications

2019

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Fast and stable gratings inscription in POFs made of different materials with pulsed 248 nm KrF laser

Cited by 65 publications

References 39 publications

Inscription of Bragg gratings in undoped PMMA mPOF with Nd:YAG laser at 266 nm wavelength

Inscription of Bragg gratings in undoped PMMA mPOF with Nd:YAG laser at 266 nm wavelength

Multifunctional Smart Optical Fibers: Materials, Fabrication, and Sensing Applications

Latest Achievements in Polymer Optical Fiber Gratings: Fabrication and Applications

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