Flex Fatigue Behavior Of Plastic Optical Fibers With Low Bending Cycles

Abstract Flex fatigue behaviour of plastic optical fibres (POFs) with the diameters of 0.2 and 0.3 mm under different pretensions is measured with fatigue life curve by flexometer. The fatigue sensitivity coefficient is calculated by the linear fitting curve of normalised stress versus logarithm of bending cycles. The residual modulus is investigated during the flex fatigue processes. The results exhibit the exponential relationship between applied pretension and numbers of bending cycles at break. It is indicated that the flex fatigue of POFs might be sensitive with high swing angle or swing speed. There is an evident loss of modulus for two POFs with pretensions of 4 and 10% of ultimate tensile strength during 10-times bending cycles. The values of residual modulus of two POFs almost keep constant after 10-times bending cycles.

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One-rod core microstructured optical fibers for evanescent sensing applications: an alternative approach

10.21203/rs.3.rs-339315/v1 ◽

2021 ◽

Author(s):

Dinesh Kumar Sharma ◽

Saurabh Mani Tripathi

Keyword(s):

Optical Fibers ◽

Structural Parameters ◽

Sensitivity Coefficient ◽

Confinement Loss ◽

Microstructured Optical Fibers ◽

Sensing Applications ◽

Alternative Approach ◽

Plastic Optical Fibers ◽

Relative Errors ◽

Mode Area

Abstract The advent of polymer (or plastic) optical fibers (POFs) with porous cross-section has contributed significantly to the sensing applications. We intend to explore the sensing attributes of polymer-based one-rod core microstructured optical fibers (P-MOFs) via utilizing an auxiliary approach. The sensitivity coefficient and the overlapping factor of P-MOF’s introduced design in air-filled and water-filled layouts against the structural parameters are exploited. We reported the overlapping factor of ~ 94% and ~ 82% for the said configurations of the fibers, respectively, at the wavelength of 0.633 µm. The confinement loss, mode-index, and effective mode-area are also evaluated for the anticipated structures. For assessing the confinement loss, an alternative approach based on double-clad fiber (DCF) approximation is employed. The validity of the simulated results is scrutinized with those as documented in the literature. Relative errors are also tabulated.

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Commercially available granulates PMMA and PS - potential problems with the production of polymer optical fibers

Photonics Letters of Poland ◽

10.4302/plp.v12i3.1036 ◽

2020 ◽

Vol 12 (3) ◽

pp. 79

Author(s):

Mateusz Łukasz Jóźwicki ◽

Mateusz Gargol ◽

Małgorzata Gil-Kowalczyk ◽

Paweł Mergo

Keyword(s):

Optical Fibers ◽

Data Communication ◽

Point Of View ◽

Optical Fibres ◽

Polymer Optical Fiber ◽

Different Temperatures ◽

Plastic Optical Fibers ◽

Crucial Information ◽

Ft Ir ◽

Polymer Optical Fibers

The aim of the study was to verify the usefulness of commercially available granulates of PMMA (poly (methyl methacrylate) and PS (polystyrene) for the production of polymer optical fibers by extrusion method. Samples were subjected to thermal processing in various conditions (different temperatures and exposure time). Thermal (TG/DTG) and spectroscopic (ATR/FT-IR) analyses were carried out to analyze changes in the samples. Based on FT-IR analysis of liquid monomers and granulates the conversion of double bonds was calculated, which gave us a picture of the degree of monomers conversion, crucial information from the technological point of view. Full Text: PDF ReferencesO. Ziemann, J. Krauser, P.E. Zamzow, W. Daum, POF Polymer Optical Fibersfor Data Communication (Berlin: Springer 2008). DirectLink P. Stajanca et al. "Solution-mediated cladding doping of commercial polymer optical fibers", Opt. Fiber Technol. 41, 227-234, (2018). CrossRef K. Peters, "Polymer optical fiber sensors—a review", Smart Mater. Struct., 20 013002 (2011) CrossRef J. Zubia and J. Arrue, "Plastic Optical Fibers: An Introduction to Their Technological Processes and Applications", Opt. Fiber Technol. 7 ,101-40 (2001) CrossRef M. Beckers, T. Schlüter, T. Gries, G. Seide, C.-A. Bunge, "6 - Fabrication techniques for polymer optical fibres", Polymer Optical Fibres, 187-199 (2017) CrossRef M. Niedźwiedź , M. Gil, M. Gargol , W. Podkościelny, P. Mergo, "Determination of the optimal extrusion temperature of the PMMA optical fibers", Phot. Lett. Poland 11, 7-9 (2019) CrossRef

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Signal Processing Enhanced Fiber Vibration Sensors

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.543.302 ◽

2013 ◽

Vol 543 ◽

pp. 302-305

Author(s):

Daniele Tosi ◽

Massimo Olivero ◽

Alberto Vallan ◽

Guido Perrone

Keyword(s):

Signal Processing ◽

Optical Fibers ◽

Adaptive Filters ◽

Spectral Estimation ◽

Cost Effective ◽

Fiber Sensors ◽

High Frequencies ◽

Vibration Sensors ◽

Signal Processing Algorithms ◽

Plastic Optical Fibers

The paper analyzes the feasibility of cost-effective fiber sensors for the measurement of small vibrations, from low to medium-high frequencies, in which the complexity of the measurement is moved from expensive optics to cheap electronics without losing too much performance thanks to signal processing algorithms. Two optical approaches are considered: Bragg gratings in standard telecom fibers, which represent the most common type of commercial fiber sensors, and specifically developed sensors made with plastic optical fibers. In both cases, to keep the overall cost low, vibrations are converted into variations of the light intensity, although this makes the received signal more sensitive to noise. Then, adaptive filters and advanced spectral estimation techniques are used to mitigate noise and improve the sensitivity. Preliminary results have demonstrated that the combined effect of these techniques can yield to a signal-to-noise improvement of about 30 dB, bringing the proposed approaches to the level of the most performing sensors for the measurement of vibrations.

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A Nanoplasmonic-Based Biosensing Approach for Wide-Range and Highly Sensitive Detection of Chemicals

Nanomaterials ◽

10.3390/nano11081961 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1961

Author(s):

Francesco Arcadio ◽

Luigi Zeni ◽

Aldo Minardo ◽

Caterina Eramo ◽

Stefania Di Di Ronza ◽

...

Keyword(s):

Optical Fibers ◽

Limit Of Detection ◽

Slab Waveguide ◽

Grating Pattern ◽

Transparent Substrate ◽

Synthetic Receptor ◽

Sensing Applications ◽

Wide Range ◽

Plastic Optical Fibers ◽

Highly Sensitive Detection

In a specific biosensing application, a nanoplasmonic sensor chip has been tested by an experimental setup based on an aluminum holder and two plastic optical fibers used to illuminate and collect the transmitted light. The studied plasmonic probe is based on gold nanograting, realized on the top of a Poly(methyl methacrylate) (PMMA) chip. The PMMA substrate could be considered as a transparent substrate and, in such a way, it has been already used in previous work. Alternatively, here it is regarded as a slab waveguide. In particular, we have deposited upon the slab surface, covered with a nanograting, a synthetic receptor specific for bovine serum albumin (BSA), to test the proposed biosensing approach. Exploiting this different experimental configuration, we have determined how the orientation of the nanostripes forming the grating pattern, with respect to the direction of the input light (longitudinal or orthogonal), influences the biosensing performances. For example, the best limit of detection (LOD) in the BSA detection that has been obtained is equal to 23 pM. Specifically, the longitudinal configuration is characterized by two observable plasmonic phenomena, each sensitive to a different BSA concentration range, ranging from pM to µM. This aspect plays a key role in several biochemical sensing applications, where a wide working range is required.

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Shaping Beam Profiles Using Plastic Optical Fiber Tapers with Application to Ice Sensors

Sensors ◽

10.3390/s20092503 ◽

2020 ◽

Vol 20 (9) ◽

pp. 2503

Author(s):

Kostas Amoiropoulos ◽

Georgia Kioselaki ◽

Nikolaos Kourkoumelis ◽

Aris Ikiades

Keyword(s):

Fiber Optics ◽

Optical Fibers ◽

Laser Cooling ◽

Detection Efficiency ◽

Numerical Aperture ◽

Beam Profile ◽

Hollow Beam ◽

Enhanced Sensitivity ◽

Surface Irregularities ◽

Plastic Optical Fibers

Using either bulk or fiber optics the profile of laser beams can be altered from Gaussian to top-hat or hollow beams allowing enhanced performance in applications like laser cooling, optical trapping, and fiber sensing. Here, we report a method based on multimode Plastic Optical Fibers (POF) long-tapers, to tweak the beam profile from near Gaussian to a hollow beam, by generating surface irregularities on the conical sections of the taper with a heat-and-pull technique. Furthermore, a cutback technique applied on long tapers expanded the output beam profile by more than twice the numerical aperture (NA) of the fiber. The enhanced sensitivity and detection efficiency of the extended profile was tested on a fiber optical ice sensor related to aviation safety.

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High-speed plastic optical fibers and their simple interconnects for 4K/8K video transmission

2015 European Conference on Optical Communication (ECOC) ◽

10.1109/ecoc.2015.7341923 ◽

2015 ◽

Cited By ~ 1

Author(s):

Y. Koike ◽

A. Inoue

Keyword(s):

Optical Fibers ◽

High Speed ◽

Video Transmission ◽

Plastic Optical Fibers

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Mechanical Properties of SiO2 vs. SiO2-TiO2 Bulk Glasses and Fibers

MRS Proceedings ◽

10.1557/proc-244-67 ◽

1991 ◽

Vol 244 ◽

Cited By ~ 5

Author(s):

Suresh T. Gulati

Keyword(s):

Mechanical Properties ◽

Optical Fibers ◽

Mechanical Performance ◽

Fatigue Behavior ◽

Deformation Mode ◽

Strength Distribution ◽

Fused Silica ◽

Space Applications ◽

Silica Glasses ◽

Silica And Titania

ABSTRACTThe mechanical properties of silica and titania-doped silica glasses, in bulk and fiber forms, are presented. These include the elastic properties (E and ν), strength distribution (in tension and bending), fatigue behavior (dynamic and static loading) and fracture toughness. Following a brief review of above properties for fused silica and ULE™ glasses (Coming Codes 7940 and 7971), used primarily for space applications, the mechanical properties data for silica and titania-doped silica-clad optical fibers are presented. The enhancement of mechanical performance of titania-doped silica clad fiber is also discussed.The effect of titania doping on fundamental properties like stress-free activation energy, crack tip pH, and deformation mode of Si-O-Si bond is discussed. In addition, the crack velocity data obtained from DCDC specimens of homogeneous silica and titania-doped silica glasses are compared in an attempt to understand the role titania plays in improving the fatigue resistance of optical fibers.

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Polarimetry of plastic optical fibers

10.1117/12.446615 ◽

2001 ◽

Cited By ~ 2

Author(s):

Joseba Zubia ◽

Gaizaka Durana ◽

Jon Arrue ◽

I. Garces ◽

Manuel Lopez-Amo

Keyword(s):

Optical Fibers ◽

Plastic Optical Fibers

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Fabrication of Lensed Plastic Optical Fiber Array Using Electrostatic Force

Journal of Manufacturing Science and Engineering ◽

10.1115/1.4004204 ◽

2011 ◽

Vol 133 (3) ◽

Cited By ~ 1

Author(s):

Yih-Tun Tseng ◽

Jhong-Bin Huang ◽

Che-Hsin Lin ◽

Chin-Lung Chen ◽

Wood-Hi Cheng

Keyword(s):

Optical Fiber ◽

Optical Fibers ◽

Electrostatic Force ◽

Coupling Efficiency ◽

Numerical Aperture ◽

Uv Curing ◽

Power Budget ◽

Fiber Array ◽

Plastic Optical Fibers ◽

Efficient Coupling

The GI (graded-index) POFs (Plastic optical fibers), which has been proven to reach distances as long as 1 km at 1.25 Gb/s has a relatively low numerical aperture . Therefore, the efficient coupling of GI POFs to the light source has become critical to the power budget in the system. Efficient coupling for a POFs system normally involves either a separate lens or the direct formation of the lens at the end of the fiber. Forming the lens-like structure directly on the fiber end is preferred for simplicity of fabrication and packaging, such as polishing and fusion, combine different fibers with the cascaded fiber method and hydroflouride (HF) chemical etching. These approaches are well established, but applicable only to glass. Optical assembly architecture for multichannel fibers and optical devices is critical to optical fiber interconnections. Multichannel fiber-pigtail laser diode (LD) modules have potential for supporting higher data throughput and longer transmission distances. However, to be of practical use, these modules must be more precise. This work proposes and manufactures lensed plastic optical fibers (LPOF) array. This novel manipulation can be utilized to fabricate an aspherical lens on a fiber array after the UV curing of the photo-sensitive polymer; the coupling efficiency (CE) is increased and exceeds 47% between the LD array and the fiber array.

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