Angle dependent Fiber Bragg grating inscription in microstructured polymer optical fibers

Bundalo, Ivan-Lazar; Nielsen, Kristian; Bang, Ole

doi:10.1364/oe.23.003699

Cited by 16 publications

(10 citation statements)

References 22 publications

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“…During the inscription, the pulse energy and the orientation of the fiber were kept stable since the energy density in the core depends on the scattering arisen from the rings structure. Six gratings were fabricated to evaluate the angle effect on each mPOF structure [33]. Figure 6(a)-6(b) shows that the 2-rings mPOF presented the best result with the highest reflected power and the shortest time and 5-rings mPOF needed much more time for grating irradiation.…”

Section: (A)-2(c)mentioning

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: (A)-2(c)mentioning

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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“…Through the comparison of 24 mPOF gratings made with random initial orientation towards the inscription beam, Bundalo et al have experimentally confirmed that there is a strong preference angle, labeled ГK, over the other ones [126,127]. Angles close to ГK showed fast start of inscription, rapid inscription and stronger gratings due to the direct access of the laser light to the fibre core.…”

Section: Techniques and Issues Of Fabricating Pof Gratingsmentioning

confidence: 99%

“…Although the control of the writing time is a complicated process, the reduction of the inscription time is the development trend for the improvement of writing efficiency. Figure 2 shows the historical evolution of inscription time of POF Bragg gratings [44,46,52,64,65,68,70,81,85,86,91,92,95,99,102,106,112,115,120,121,126,127,132,140]. …”

Section: Techniques and Issues Of Fabricating 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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“…When the laser is turned off, the temperature decreases and the grating becomes of a similar intensity to the first one, observing a π-phase shift. Different results are due to the impact of the orientation in micro-structured fibers [39] which leads to strong variation on the intensity of the fabricated gratings. However, similar spectral characteristics are obtained in all cases.…”

Section: Ps-fbg Fabricationmentioning

confidence: 99%

Bandpass transmission filters based on phase shifted fiber Bragg gratings in microstructured polymer optical fibers

et al. 2017

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In this contribution we report on the fabrication of novel bandpass transmission filters based on PS-FBGs in microstructured polymer fibers at telecom wavelengths. The phase mask technique is employed to fabricate several superimposed gratings with slight different periods in order to form Moiré structures with a single or various π phase shifts along the device. Simulations and experimental results are included in order to demonstrate very narrowband transmission filters. Experimental characterization under strain and temperature variations is provided in a non-annealed fiber and time stability of the fabricated devices has been also measured under different pre-strain conditions.

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Angle dependent Fiber Bragg grating inscription in microstructured polymer optical fibers

Cited by 16 publications

References 22 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

Fabrication of Polymer Optical Fibre (POF) Gratings

Bandpass transmission filters based on phase shifted fiber Bragg gratings in microstructured polymer optical fibers

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