Routes to practical plastic optical fiber systems

White, Whitney R.; Blyler, L. L.; Giaretta, G.; Quan, Xina; Reed, W. A.; Dueser, Michael; Shevchuk, G.J.; Wiltzius, Pierre

doi:10.1117/12.408535

Cited by 6 publications

(3 citation statements)

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“…The determination of molecular parameters using laser light scattering (LLS) of partially and fully fluorinated polymers was pioneered by Chu and co-workers. [23][24][25][26] The light scattering intensity of a polymer solution is proportional to (dn/dC) 2 . It is known that a perfluorinated polymer and a perfluorinated solvent are nearly isorefractive.…”

Section: Resultsmentioning

confidence: 99%

“…Plastic fibers may be terminated simply by cutting without cleaning and polishing required by silica fibers. Consequently, the installed cost of a POF system is expected to be low due to easy installation and to relaxed tolerances of mechanical and optical couplings at end points. , As a result of these advantages, various POF materials have been recently developed. Poly(methyl methacrylate) (PMMA) along with other POF materials is commercially used in relatively short distance networking.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of an Amorphous Perfluoropolymer: Poly(perfluoro-2-methylene-4-methyl-1,3-dioxolane)

et al. 2005

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A perfluorinated monomer, perfluoro-2-methylene-4-methyl-1,3-dioxolane (PFMMD), was synthesized by various methods. The monomer was polymerized in bulk and/or in the solution by a free radical mechanism using perfluorodibenzoyl peroxide and/or perfluorodi-tert-butyl peroxide as an initiators. The polymers obtained (poly(PFMMD)) were colorless and transparent. However, a polymer rod exposed to the atmosphere turned hazy. When the polymers were purified by precipitating the polymer solution into chloroform, they did not turn hazy when exposed to air for a long period of time and remained clear with a high UV-vis light transmittance. The glass transition temperature of the purified polymer was 130-134 °C. NMR measurements indicate that the purified polymers have mostly vinyl addition polymer structure. Nevertheless, we suppose that the pristine polymers contain structural units formed by ringopening polymerization. The molecular weight of poly(PFMMD) samples can be regulated using carbon tetrachloride, carbon tetrabromide, and sulfuryl chloride as chain transfer agents. Polymerization in the presence of these regulators is characterized by nondegradative chain transfer. The intrinsic viscosity of poly(PFMMD) samples was determined in hexafluorobenzene. Hexafluorobenzene is a thermodynamically good solvent for poly(PFMMD). The molecular weights of poly(PFMMD)s were characterized by the intrinsic viscosity and dynamic light scattering (DLS). The refractive index of poly(PFMMD) between 400 and 1550 nm was between 1.3360 and 1.3270. The material dispersion of poly(PFMMD) is superior to that of a commercial poly (1,1,2,4,4,5,5,6,7,7-decafluoro-3-oxa-1,6-heptadiene) (Cytop).

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of an Amorphous Perfluoropolymer: Poly(perfluoro-2-methylene-4-methyl-1,3-dioxolane)

et al. 2005

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“…Since the demonstration of the first plastic optical fibers (POF) in the 1960s, POF has been increasingly applied to local area network (LAN) because of its high elastic moduli, easy mechanical and optical coupling, low installation cost, etc. , As a result of these advantages, various POF materials have been developed such as poly(methyl methacrylate) (PMMA), polycarbonate (PC), and polystyrene (PS). PMMA has excellent transparency, permits mass production, and is of low cost.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Partially Fluorinated Amorphous Ring Containing Polymers: Poly[bis(2,2-difluorovinyl)formal], Poly[bis(2,2-difluorovinyl)difluoroformal], and Poly[bis(1-deuterio-2,2-difluorovinyl)difluoroformal]

et al. 2004

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Three novel partially fluorinated monomers, bis(2,2-difluorovinyl)formal (I), bis(2,2difluorovinyl)difluoroformal (II), and bis(1-deuterio-2,2-difluorovinyl)difluoroformal (III), were prepared. These monomers were polymerized in bulk via free radical mechanism. Monomer I produced a crosslinked polymer, but monomers II and III yielded amorphous polymers (II-P and III-P) having five-and six-membered rings along the backbone. Polymers II-P and III-P were soluble not only in fluorinated solvents but also in nonfluorinated solvents such as THF, 1, 4-dioxane, DMF, and DMSO. They have good thermal stability (onset of decomposition >400 °C), high glass transition temperatures (105 °C), and low dielectric constant (1.98-1.82 at frequency ranging from 0.1 to 3 × 10 6 Hz). Furthermore, these polymers are completely amorphous and possess outstanding optical clarity extending from visible to near-IR regions. The refractive indices of both polymers were measured at various wavelengths to evaluate material dispersion. The material dispersions of II-P and III-P were similar and had low values, which are comparable to perfluorinated polymers and much lower than perdeuterioPMMA. The unique optical properties of these polymers make them attractive for use as optical materials.

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