Optical fiber and optical fiber ribbon
An optical fiber comprises a glass fiber including a core and a cladding, and a coating resin layer for coating the glass fiber; the coating resin layer has a primary resin layer in contact with the glass fiber for coating the glass fiber, and a secondary resin layer for coating the primary resin layer; the primary resin layer includes a cured product of a first resin composition containing a silicone (meth)acrylate and a photopolymerization initiator; the secondary resin layer includes a cured product of a second resin composition containing a urethane (meth)acrylate and a photopolymerization initiator; and the amount of tin contained in the coating resin layer is 150 ppm or less in a mass ratio.
1 . An optical fiber comprising:
a glass fiber comprising a core and a cladding, and a coating resin layer for coating the glass fiber;
wherein the coating resin layer has a primary resin layer in contact with the glass fiber for coating the glass fiber, and a secondary resin layer for coating the primary resin layer;
the primary resin layer includes a cured product of a first resin composition containing a silicone (meth)acrylate and a photopolymerization initiator;
the secondary resin layer includes a cured product of a second resin composition containing a urethane (meth)acrylate and a photopolymerization initiator; and
an amount of tin contained in the coating resin layer is 150 ppm or less in a mass ratio.
2 . The optical fiber according to claim 1 , wherein a Young's modulus of the secondary resin layer is 80 MPa or more and 2000 MPa or less at 23° C.
3 . The optical fiber according to claim 1 , wherein the second resin composition further contains an epoxy (meth)acrylate having an aromatic ring.
4 . The optical fiber according to claim 1 , wherein the amount of tin is 10 ppm or more in a mass ratio.
5 . The optical fiber according to claim 1 , wherein the first resin composition further contains nonylphenol ethylene oxide-modified (meth)acrylate.
6 . An optical fiber ribbon comprising:
a plurality of the optical fibers according to claim 1 arranged in parallel; and
a connecting resin layer for coating and connecting a plurality of the optical fibers.
7 . The optical fiber according to claim 2 , wherein the second resin composition further contains an epoxy (meth)acrylate having an aromatic ring.
8 . The optical fiber according to claim 2 , wherein the amount of tin is 10 ppm or more in a mass ratio.
9 . The optical fiber according to claim 3 , wherein the amount of tin is 10 ppm or more in a mass ratio.
10 . The optical fiber according to claim 7 , wherein the amount of tin is 10 ppm or more in a mass ratio.
11 . The optical fiber according to claim 2 , wherein the first resin composition further contains nonylphenol ethylene oxide-modified (meth)acrylate.
12 . The optical fiber according to claim 3 , wherein the first resin composition further contains nonylphenol ethylene oxide-modified (meth)acrylate.
13 . The optical fiber according to claim 4 , wherein the first resin composition further contains nonylphenol ethylene oxide-modified (meth)acrylate.
14 . The optical fiber according to claim 7 , wherein the first resin composition further contains nonylphenol ethylene oxide-modified (meth)acrylate.
15 . The optical fiber according to claim 8 , wherein the first resin composition further contains nonylphenol ethylene oxide-modified (meth)acrylate.
16 . The optical fiber according to claim 9 , wherein the first resin composition further contains nonylphenol ethylene oxide-modified (meth)acrylate.
17 . The optical fiber according to claim 10 , wherein the first resin composition further contains nonylphenol ethylene oxide-modified (meth)acrylate.