Pembangunan Aplikasi Penyambungan Kabel Fiber Optic Menggunakan Metode Fusion Berbasis Simulasi

Splicing of optical fibers have two methods i.e fusion splicing and mechanical splicing. Fusion splicing method is chosen because this method is gives permanent fusion. Fusion splicing is the act of combining two optical fiber end-to-end using heat parallel electrodes. The goal is to combine the two fibers together such that light passing through the fiber scattered or reflected back. Merging optical fiber using this method to connect Fusion Splicing can be done using a tool arc fusion splicer. Arc fusion splicer is a tool that is used to connect the optical fiber using parallel electrode rod smelting technology for accurate light reflection perfect. This study is to build simulation about how to splicing optical fibers using fusion splicing. Simulation program is chosen because of the price arc fusion splicer is very expensive ranging from millions rupiah in 2014, so this simulation media may be one visualization of the original tools of arc fusion splicer. The expected goal is to be able to know how to connect the fiber optic cable is good and right fiber optic cable by using simulation based on Internatonal standards ITU-T (International Telecommunication Union)

Mechanical strength of silica fiber splices after exposure to extreme temperatures

By using a combination of type-I and regenerated gratings, the mechanical strength of optical fiber splices after exposure to temperatures over 1300 C was characterized. Splice strength was found to decrease with temperature with a secondorder polynomial dependence after exposure to environments hotter than 500 C. Splices exposed to temperatures above 1300 C were 80% more fragile than non-exposed splices. The lack of optical attenuation and the narrowing distribution of breaking strengths for higher temperatures suggest surface damage mechanisms, such as hydrolysis, play a key role in weakening post-heating and that damage mechanisms dominate over strengthening induced by crack melting

29 W High power CW supercontinuum source.

Submitted versio

Stabilized large mode area in tapered photonic crystal fiber for stable coupling

A rigorous modal solution approach based on the numerically efficient finite element method (FEM) has been used to design a tapered photonic crystal fiber with a large mode area that could be efficiently coupled to an optical fiber. Here, for the first time, we report that the expanded mode area can be stabilized against possible fabrication tolerances by introducing a secondary surrounding waveguide with larger air holes in the outer ring. A full-vectorial -field approach is employed to obtain mode field areas along the tapered section, and the Least Squares Boundary Residual (LSBR) method is used to obtain the coupling coefficients to a butt-coupled fiber

A New Design of Ultra-Flattened Near-zero Dispersion PCF Using Selectively Liquid Infiltration

The paper report new results of chromatic dispersion in Photonic Crystal Fibers (PCFs) through appropriate designing of index-guiding triangular-lattice structure devised, with a selective infiltration of only the first air-hole ring with index-matching liquid. Our proposed structure can be implemented for both ultra-low and ultra-flattened dispersion over a wide wavelength range. The dependence of dispersion parameter of the PCF on infiltrating liquid indices, hole-to-hole distance and air-hole diameter are investigated in details. The result establishes the design to yield a dispersion of 0+-0.15ps/ (nm.km) in the communication wavelength band. We propose designs pertaining to infiltrating practical liquid for near-zero ultra-flat dispersion of D=0+-0.48ps/ (nm.km) achievable over a bandwidth of 276-492nm in the wavelength range of 1.26 {\mu}m to 1.80{\mu}m realization.Comment: 6 pages, 13 figures, 1 tabl

Fusion splicing photonic crystal fibers and conventional single-mode fibers : microhole collapse effect

Author name used in this publication: M. S. Demokan2007-2008 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Efficient 2075-nm Laser Emission From Ho3+-Doped Fluorotellurite Glass in a Compact All-Fiber Structure

In this Letter, we report an Ho3+-doped fluorotellurite glass all-fiber laser at 2075 nm. The gain fiber is pumped in-band with a 1976-nm fiber laser and connected by fusion splicing. A high-quality fusion splicing point with a loss of \u3c 0.1 dB was obtained by finely adjusting the splicing power and offset. In addition, by optimizing the writing parameters, a third-order fiber Bragg grating (FBG) with a reflectivity of 98% was achieved at 2075 nm using the femtosecond laser direct-writing method. Using the FBG as the laser cavity mirror and a relatively short 28-cm-long home-made Ho3+-doped fluorotellurite fiber as the laser medium, a laser with a maximum unsaturated output power of 7.33 W was obtained, and the corresponding slope efficiency was as high as 93.4%. The first, to the best of our knowledge, demonstration of the fluorotellurite glass all-fiber ∼2.1-µm laser presented in this work may pave the way for a high-power 2.1-µm fiber laser with a compact structure

Circ-ZNF609 Is a Circular RNA that Can Be Translated and Functions in Myogenesis

Circular RNAs (circRNAs) constitute a family of transcripts with unique structures and still largely unknown functions. Their biogenesis, which proceeds via a back-splicing reaction, is fairly well characterized, whereas their role in the modulation of physiologically relevant processes is still unclear. Here we performed expression profiling of circRNAs during in vitro differentiation of murine and human myoblasts, and we identified conserved species regulated in myogenesis and altered in Duchenne muscular dystrophy. A high-content functional genomic screen allowed the study of their functional role in muscle differentiation. One of them, circ-ZNF609, resulted in specifically controlling myoblast proliferation. Circ-ZNF609 contains an open reading frame spanning from the start codon, in common with the linear transcript, and terminating at an in-frame STOP codon, created upon circularization. Circ-ZNF609 is associated with heavy polysomes, and it is translated into a protein in a splicing-dependent and cap-independent manner, providing an example of a protein-coding circRNA in eukaryotes