发明名称 |
Directional coupler for coupling single-polarization optical fibers |
摘要 |
A directional coupler for coupling two single-polarization optical fibers each comprising a core, a cladding, and an elliptic jacket having a major axis is made by preparing two quartz substrates each of which is formed with a channel on one major surface; embedding and bonding the jacketed single-polarization optical fibers in the channels in the substrates, respectively, such that the major axis of the elliptic jacket extends perpendicular to the substrate surface; abrading away the substrates together with the fiber embedded therein from the major surface to a depth where light traveling in the core of said fiber may leak out; placing one substrate on the other substrate with the abraded surfaces facing each other; and bonding the substrates to keep the cores in sufficiently close relation to establish evanescent wave coupling therebetween. A stress perpendicular to the major axis is preferably applied to the fiber.
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申请公布号 |
US4753497(A) |
申请公布日期 |
1988.06.28 |
申请号 |
US19840601551 |
申请日期 |
1984.04.18 |
申请人 |
HITACHI CABLE LIMITED;THE AGENCY OF INDUSTRIAL SCIENCE AND TECHNOLOGY |
发明人 |
FUJII, YOSHIMASA;MITSUHASHI, YOSHINOBU;UETSUKA, HISATO |
分类号 |
G02B6/28;(IPC1-7):G02B6/26 |
主分类号 |
G02B6/28 |
代理机构 |
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主权项 |
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地址 |
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