发明名称 |
PRODUCTION OF FIBER GRATING AND THE FIBER GRATING |
摘要 |
PROBLEM TO BE SOLVED: To make transmission characteristics and mechanical strength characteristics compatible, without impeding the improvement of the productivity. SOLUTION: On an optical fiber 1' consisting of a core and a cladding, a coating layer 45 of 37.5 μm in film thickness is formed in a single coat by the use of ultraviolet-ray transmission resin. This coated optical fiber 1 is positioned so that the cladding layer has its outer peripheral surface inscribed in the external edge of the beam pattern BP of ultraviolet laser light which converge on a focus F by a cylindrical lens system 7. A Bragg grating is written to the core by having the core irradiated with an ultraviolet laser beam of 1.5 kJ/cm<2> in the irradiation energy density from outside the jacket layer via a phase mask. |
申请公布号 |
JPH11305051(A) |
申请公布日期 |
1999.11.05 |
申请号 |
JP19980112259 |
申请日期 |
1998.04.22 |
申请人 |
MITSUBISHI CABLE IND LTD |
发明人 |
IMAMURA KAZUO;NAKAI TADAHIKO;SUDO TAKAHIDE |
分类号 |
G02B6/00;G02B5/18;G02B6/02;G02B6/10 |
主分类号 |
G02B6/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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