发明授权
- 专利标题: Fabrication of a low-loss plastic optical fiber
- 专利标题(中): 制造低损耗塑料光纤
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申请号: US316834申请日: 1981-10-30
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公开(公告)号: US4381269A公开(公告)日: 1983-04-26
- 发明人: Toshikuni Kaino , Michiya Fujiki , Shigeo Nara , Shigeru Oikawa
- 申请人: Toshikuni Kaino , Michiya Fujiki , Shigeo Nara , Shigeru Oikawa
- 申请人地址: JPX
- 专利权人: Nippon Telegraph & Telephone Public Corporation
- 当前专利权人: Nippon Telegraph & Telephone Public Corporation
- 当前专利权人地址: JPX
- 优先权: JPX55-157599 19801111; JPX55-159599 19801114
- 主分类号: B29C47/00
- IPC分类号: B29C47/00 ; D01F8/10 ; G02B1/04 ; B29D11/00 ; G02B5/14
摘要:
In a sealed system, a polymerization initiator and a chain transfer agent are added to a methyl methacrylate monomer distilled under reduced pressure condition via a distillation step of the former both ingredients, the methyl methacrylate monomer is successively polymerized to prepare a core polymer while maintaining the reduced pressure condition, then the resulting core polymer is subjected to melt spinning to form a core fiber while maintaining the sealed system, and a clad of a macromolecular compound having a refractive index lower than that of the aforesaid core fiber is adhered around the periphery thereof, whereby a low-loss plastic optical fiber with excellent optical transmission characteristics having a core-cladding structure is fabricated. Plastic optical fibers so made exhibit light attenuation as low as 60 dB/km or lower.
公开/授权文献
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