发明授权
- 专利标题: Waveguide bends and devices including waveguide bends
- 专利标题(中): 波导弯曲和器件包括波导弯曲
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申请号: US10479579申请日: 2002-05-28
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公开(公告)号: US07302135B2公开(公告)日: 2007-11-27
- 发明人: Andrea Melloni , Raffaella Costa , Federico Carniel
- 申请人: Andrea Melloni , Raffaella Costa , Federico Carniel
- 申请人地址: IT Milan
- 专利权人: Pirelli & C. S.p.A.
- 当前专利权人: Pirelli & C. S.p.A.
- 当前专利权人地址: IT Milan
- 代理机构: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- 优先权: EP01304890 20010605
- 国际申请: PCT/EP02/05848 WO 20020528
- 国际公布: WO02/099484 WO 20021212
- 主分类号: G02B6/02
- IPC分类号: G02B6/02
摘要:
Waveguide bends are specially designed according to a matching condition in order to suppress mode distortion and other undesirable effects. The bend is structured having regard to its length and curvature to ensure that at its end the first and second bend modes are substantially in phase with each other having completed approximately an integer number of beats. By being in phase at the end of the bend, the two modes are able to properly reconstruct the first mode of the straight waveguide and propagate on with a minimum of distortion, whether it be into a straight section, a further curved section of arbitrary curvature, into a free space propagation region and the like. This approach suppresses mode distortion, transition losses and other negative effects of waveguide bends. Device applications include couplers, Y-branches and Mach-Zehnder interferometers, all of which include waveguide bends.
公开/授权文献
- US20040234199A1 Waveguide bends and devices including waveguide bends 公开/授权日:2004-11-25
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