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AssigneeFurukawa Electric North America, Inc.
InventorsFrank Calabrese, Kaushik Chakrabarty, Arturo Hale, Robert C. Moore
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A fiber optic attenuating element is formed of a thermoplastic polymer having (i) a refractive index in the range of between about 1.42 and 1.47 as measured at a temperature of 23° C. and a wavelength of 1550 nm, (ii) a glass transition temperature of at least 105° C., and (iii) an intrinsic loss of less than one dB/mm at 1310 and 1550 nm. In disclosed embodiments, the polymer includes at least one monomer including fluorinated moieties and, optionally, one or more additional monomers. A main body portion of the element has a first planar contact face on a first side and a second planar contact face on a second, opposite side. The contact faces are dimensioned to couple optically with first and second optical fibers when ends of the fibers are urged against the faces by parts of an attenuator device in which the element is mounted.
An element for attenuating light signals in a fiber optic network comprising a main body portion formed of a thermoplastic polymer, and the main body portion has (i) a refractive index in the range of between about 1.42 and 1.47 as measured at a temperature of 23° C. and a wavelength of 1550 nm, (ii) a glass transition temperature of at least 105° C., and (iii) an intrinsic loss of less than one dB/mm at wavelengths of 1310 nm and 1550 nm.
An element for attenuating light signals in a fiber optic network comprising a main body portion formed of a thermoplastic polymer including at least one monomer comprising fluorinated moieties and, optionally, one or more additional monomers, wherein the main body portion has (i) a refractive index in the range of between about 1.42 and 1.47 as measured at a temperature of 23° C. and a wavelength of 1550 nm, (ii) a glass transition temperature of at least 105° C., and (iii) an intrinsic loss of less than one dB/mm at wavelengths of 1310 nm and 1550 nm.
An element for attenuating light signals in a fiber optic network, comprising a main body portion formed of a polymer including methylmethacrylate (MMA) and trifluoroethylmethacrylate (TFEMA), wherein the main body portion has a refractive index (R.I.) in the range of between about 1.42 and 1.47 as measured at a temperature of 23° C. and a wavelength of 1550 nm, and has a glass transition temperature (Tg) of at least 105° C.
An element for attenuating light signals in a fiber optic network, comprising a main body portion formed of a polymer consisting essentially of polymethyl-2-fluoroacrylate (PMFA), wherein the main body portion has a refractive index in the range of between about 1.42 and 1.47 as measured at a temperature of 23° C. and a wavelength of 1550 nm, and has a Tg of at least 105° C.
An element for attenuating light signals in a fiber optic network, comprising a main body portion formed of a polymer consisting essentially of methylmethacrylate (MMA), trifluoroethylmethacrylate (TFEMA) and a monomer selected from the group comprising maleimide, N-methylmaleimide, N-ethylmaleimide, N-phenylmaleimide and N-cyclohexylmaleimide, wherein the main body portion has a refractive index (R.I.) in the range of between about 1.42 and 1.47 as measured at a temperature of 23° C. and a wavelength of 1550 nm, and has a glass transition temperature (Tg) of at least 105° C.
An element for attenuating light signals in a fiber optic network, comprising a main body portion formed of a polymer consisting essentially of methylmethacrylate (MMA) and one or more monomers selected from the group comprising hexafluoroisopropyl methacrylate (HFIPMA) and perfluorocyclohexyl methylmethacrylate (PFCHMMA), and, optionally, one or more monomers selected from the group comprising maleimide, N-methyl-maleimide, N-ethylmaleimide, N-phenylmaleimide and N-cyclohexylmaleimide, wherein the main body portion has a refractive index (R.I.) in the range of between about 1.42 and 1.47 as measured at a temperature of 23° C. and a wavelength of 1550 nm, and has a glass transition temperature (Tg) of at least 105° C.
An element for attenuating light signals in a fiber optic network comprising a main body portion formed of a thermoplastic polymer comprising fluorine in an amount between about 5 wt. % and 30 wt. %, wherein the main body portion has (i) a refractive index (R.I.) in the range of between about 1.42 and 1.47 as measured at a temperature of 23° C. and a wavelength of 1550 nm, (ii) a glass transition temperature of at least 105° C., and (iii) an intrinsic loss of less than one dB/mm at wavelengths of 1310 nm and 1550 nm.
An element for attenuating light signals in a fiber optic network, comprising a main body portion formed of a thermoplastic polymer, wherein the main body portion has a refractive index (R.I.) in the range of between about 1.42 and 1.47 as measured at a temperature of 23° C. and a wavelength of 1550 nm, and has a glass transition temperature (Tg) of at least 105° C., wherein the thermoplastic polymer comprises:
An element for attenuating light signals in a fiber optic network, comprising a main body portion formed of a thermoplastic polymer, wherein the main body portion has a refractive index (R.I.) in the range of between about 1.42 and 1.47 as measured at a temperature of 23° C. and a wavelength of 1550 nm, and has a glass transition temperature (Tg) of at least 105° C., wherein the thermoplastic polymer comprises:
An element for attenuating light signals in a fiber optic network, comprising a main body portion formed of a thermoplastic polymer, wherein the main body portion has a refractive index (R.I.) in the range of between about 1.42 and 1.47 as measured at a temperature of 23° C. and a wavelength of 1550 nm, and has a glass transition temperature (Tg) of at least 105° C., wherein the thermoplastic polymer comprises:
Dependencies are inferred from the claim text.