发明名称 |
Polarization-Maintaining optical fiber for coupler fabrication. |
摘要 |
<p>Polarization-maintaining coupler is made by a biconically-tapered-fused process from two short lengths of an optical fiber, each having a small, oval stress-applying region that substantially contacts the core. The area of the stress-applying region of the optical fiber is less than 10 percent, preferably less than 2 percent, that of the optical fiber and preferably is contiguous with the core. Couplers of highest quality are made from quartz glass fibers having a birefringence between 1 and 3 x 10<-><4>. It is believed that the principal axes of the oval stress-applying regions of those couplers of highest quality have been collinear or parallel. To permit a coupler to be handled, it can be mounted on a quartz glass substrate with the coupler suspended in air and then potted in a cured elastomer.</p> |
申请公布号 |
EP0357429(A2) |
申请公布日期 |
1990.03.07 |
申请号 |
EP19890308828 |
申请日期 |
1989.08.31 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
OLSON, GRIEG A. C/O MINNESOTA MINING AND;ONSTOTT, JAMES R. C/O MINNESOTA MINING AND |
分类号 |
G02B6/024;G02B6/10;G02B6/28;G02B6/293 |
主分类号 |
G02B6/024 |
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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