Gratings fabrication in benzildimethylketal doped photosensitive polymer optical fibers using 355 nm nanosecond pulsed laser

Luo, Yanhua; Zhang, Qijin; Liu, Huiyong; Peng, Gang-Ding

doi:10.1364/ol.35.000751

Cited by 44 publications

(52 citation statements)

References 24 publications

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“…Such a dopant, when irradiated with UV light, acts as a photo-initiator and generates a photo-polymerization process in the core [45] and leads to a positive and strong index change. The BDK absorption coefficien presents much higher values for wavelengths shorter than 325 nm, as shown in [47], and shorter laser inscription wavelengths, such as 248 nm, enhanced its effects [46] using just one pulse. However, it shall be noted that POFBGs were achieved in 7 minutes using 325 nm HeCd laser using an undoped fibe [48].…”

Section: Experimental Setup and Inscriptionmentioning

confidence: 98%

Phase-Shifted Bragg Grating Inscription in PMMA Microstructured POF Using 248-nm UV Radiation

Pereira

Pospori

Antunes

et al. 2017

J. Lightwave Technol.

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Abstract-In this work, we experimentally validate and characterize the first phase-shifted polymer optical fiber Bragg gratings (PS-POFBGs) produced using a single pulse from a 248-nm krypton fluoride laser. A single-mode poly (methyl methacrylate) optical fiber with a core doped with benzyl dimethyl ketal for photosensitivity improvement was used. A uniform phase mask customized for 850-nm grating inscription was used to inscribe these Bragg structures. The phase shift defect was created directly during the grating inscription process by placing a narrow blocking aperture in the center of the UV beam. The produced high-quality Bragg grating structures, presenting a double dips, reject 16.3 dB (97.6% reflectivity) and 13.2 dB (95.2% reflectivity) of the transmitted power, being therefore appropriate for sensing or other photonic applications. Its transmission spectrum possesses two sharp transmission notches, allowing a significant increase in measurement resolution compared to direct interrogation of a single grating. The reflection and transmission spectra when multiple phase shifts are introduced in the fiber Bragg grating structure are also shown. The PS-POFBG's strain, temperature, pressure, and humidity characteristics have been experimentally analyzed in detail to assess their potential usage as sensors.

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Section: Experimental Setup and Inscriptionmentioning

confidence: 98%

Phase-Shifted Bragg Grating Inscription in PMMA Microstructured POF Using 248-nm UV Radiation

Pereira

Pospori

Antunes

et al. 2017

J. Lightwave Technol.

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“…Therefore, functional dopants, such as fluorescein, trans -4-stilbenemethanol (TSB), benzildimethylketal (BDK), 9-vinylanthracene (VA), etc. have been introduced into POF for the enhancement of the photosensitivity, as listed in Table S1 [22,64,65,66,67,68,69]. The incorporation can be either through the simple doping with small molecules [22,64,65], or through the co-polymerization with photosensitive monomers [66,67,69].…”

Section: Pof Gratingsmentioning

confidence: 99%

Fabrication of Polymer Optical Fibre (POF) Gratings

Luo

Yan

Zhang

et al. 2017

Sensors

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Gratings inscribed in polymer optical fibre (POF) have attracted remarkable interest for many potential applications due to their distinctive properties. This paper overviews the current state of fabrication of POF gratings since their first demonstration in 1999. In particular we summarize and discuss POF materials, POF photosensitivity, techniques and issues of fabricating POF gratings, as well as various types of POF gratings.

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“…It utilizes a volume hologram’s wavefront selection properties to simultaneously image multiple object depths [131–135]. Figure 14 shows a representative experimental setup.…”

Section: Snapshot Multidimensional Imaging Implementations and Appmentioning

confidence: 99%

A review of snapshot multidimensional optical imaging: Measuring photon tags in parallel

2016

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Multidimensional optical imaging has seen remarkable growth in the past decade. Rather than measuring only the two-dimensional spatial distribution of light, as in conventional photography, multidimensional optical imaging captures light in up to nine dimensions, providing unprecedented information about incident photons’ spatial coordinates, emittance angles, wavelength, time, and polarization. Multidimensional optical imaging can be accomplished either by scanning or parallel acquisition. Compared with scanning-based imagers, parallel acquisition—also dubbed snapshot imaging—has a prominent advantage in maximizing optical throughput, particularly when measuring a datacube of high dimensions. Here, we first categorize snapshot multidimensional imagers based on their acquisition and image reconstruction strategies, then highlight the snapshot advantage in the context of optical throughput, and finally we discuss their state-of-the-art implementations and applications.

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Gratings fabrication in benzildimethylketal doped photosensitive polymer optical fibers using 355 nm nanosecond pulsed laser

Cited by 44 publications

References 24 publications

Phase-Shifted Bragg Grating Inscription in PMMA Microstructured POF Using 248-nm UV Radiation

Phase-Shifted Bragg Grating Inscription in PMMA Microstructured POF Using 248-nm UV Radiation

Fabrication of Polymer Optical Fibre (POF) Gratings

A review of snapshot multidimensional optical imaging: Measuring photon tags in parallel

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