1. An optical transceiver, comprising:
an optical subassembly;
an optical connector optically coupled with said optical subassembly through an inner fiber;
an electronic circuit electrically coupled with said optical subassembly;
a housing including a top housing and a base housing, said housing enclosing said optical subassembly, said optical connector, and said electronic circuit in a space formed between said top housing and said base housing; and
a gasket put between said top housing and said base housing along a periphery of said housing, said gasket being made of electrically conductive material to shield said space from an exterior,
wherein said gasket receives said inner fiber.
2. The optical transceiver of claim 1,
wherein said gasket is made of silicone rubber coated with electrically conductive material.
3. The optical transceiver of claim 1,
wherein said gasket is made of elastic material.
4. The optical transceiver of claim 1,
wherein said gasket includes a window through which said inner fiber passes.
5. The optical transceiver of claim 1,
wherein said gasket has a C-shaped cross section with a slit extending along a longitudinal direction thereof, said inner fiber passing said slit to be received by said gasket.
6. The optical transceiver of claim 1,
further including a plurality of optical subassemblies and an optical component to multiplex or to de-multiplex optical signals each corresponding to said optical subassemblies, each of said optical signals having a specific wavelength different from others.
7. The optical transceiver of claim 1,
wherein said base housing guides said inner fiber in a portion extracted from said gasket.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A fluorine-containing copolymer comprising:
a first unit derived from -trifluoromethyl acrylic ester represented by the following general formula (1); and
a second unit derived from a vinyl monomer,
10
where R1 is an organic group containing at least one fluorine atom.
2. A fluorine-containing copolymer according to claim 1, wherein the vinyl monomer is a vinyl ether.
3. A fluorine-containing copolymer according to claim 1, wherein the vinyl monomer is an allyl ether or allyl ester.
4. A fluorine-containing copolymer according to claim 1, wherein the vinyl monomer is a vinyl ester.
5. A fluorine-containing copolymer according to claim 1, wherein the vinyl monomer is an acrylic or methacrylic ester.
6. A fluorine-containing copolymer according to claim 1, wherein the vinyl monomer is a styrene monomer.
7. A fluorine-containing copolymer according to claim 1, wherein the vinyl monomer is a hydroxystyrene or a hydroxystyrene derivative containing a protective group for protecting a hydroxyl group, the protective group being capable of dissociating by an acid.
8. A fluorine-containing copolymer according to claim 1, wherein the vinyl monomer is 4-(2-hydroxyhexafluoroisopropyl)styrene or a 4-(2-hydroxyhexafluoroisopropyl)styrene derivative containing a protective group for protecting a hydroxyl group, the protective group being capable of dissociating by an acid.
9. A fluorine-containing copolymer according to claim 1, wherein the R1 in the general formula (1) is 2,2,2-trifluoroethyl group or hexafluoroisopropyl group.
10. A process for producing a fluorine-containing copolymer, said copolymer comprising:
a first unit derived from -trifluoromethyl acrylic ester represented by the following general formula (1); and
a second unit derived from a vinyl monomer,
11
where R1 is an organic group containing at least one fluorine atom, said process comprising:
reacting the -trifluoromethyl acrylic ester with the vinyl monomer.
11. A process according to claim 10, wherein said reacting is conducted in the presence of t-butylperoxypivalate or azobisisobutyronitrile as a radical polymerization initiator.
12. A process according to claim 10, wherein the -trifluoromethyl acrylic ester is hexafluoroisopropyl–trifluoromethylacrylate or trifluoroethyl–trifluoromethylacrylate.
13. A process according to claim 10, wherein the vinyl monomer is one selected from the group consisting of vinyl ethers, allyl ethers, allyl esters, vinyl esters, acrylic esters, methacrylic esters, styrene monomers, hydroxystyrene, and hydroxystyrene derivatives each containing a protective group for protecting a hydroxyl group, the protective group being capable of dissociating by an acid
14. A process according to claim 10, wherein the vinyl monomer is 4-(2-hydroxyhexafluoroisopropyl)styrene or a 4-(2-hydroxyhexafluoroisopropyl)styrene derivative containing a protective group for protecting a hydroxyl group, the protective group being capable of dissociating by an acid.
15. A process according to claim 10, wherein the vinyl monomer is one selected from the group consisting of isobutyl vinyl ether, hydroxybutyl allyl ether, allyl acetate, vinyl acetate, styrene, hydroxystyrene, 4-(2-hydroxyhexafluoroisopropyl)styrene, ethoxymethylated hydroxystyrene, ethoxymethylated 4-(2-hydroxyhexafluoroisopropyl)styrene, and 2,2,2-trifluoroethyl methacrylate.