公开(公告)号：US20110116741A1

公开(公告)日：2011-05-19

申请号：US12919578

申请日：2008-02-29

申请人： Gaia Cevini ,  Paola Galli ,  Stefano Lorenzotti ,  Marco Piazza ,  Marco Romagnoli ,  Luciano Socci ,  Lorenzo Bolla ,  Silvia Ghidini

发明人： Gaia Cevini ,  Paola Galli ,  Stefano Lorenzotti ,  Marco Piazza ,  Marco Romagnoli ,  Luciano Socci ,  Lorenzo Bolla ,  Silvia Ghidini

IPC分类号： G02B6/30

CPC分类号： G02B6/305 ,  G02B6/1228

摘要： An optical mode transformer comprises a first waveguide including a first core, a first cladding and an end facet configured to be coupled to an optical fiber. The transformer further includes a second waveguide comprising a second core, a second cladding and an end directly coupled to an end of the first waveguide. A third waveguide comprises a third core and a third cladding, and is arranged with respect to the second waveguide so as to realize an evanescent optical coupling with the second waveguide. The third core includes a tapered region wherein evanescent coupling takes place, and wherein a refractive index contrast of the first waveguide is less than a refractive index contrast of the second waveguide, the refractive index contrast of the second waveguide is less than a refractive index contrast of the third waveguide, and the refractive index contrast of the third waveguide is not less than 18%.

摘要翻译： 光学模式变压器包括第一波导，其包括第一芯，第一包层和被配置为耦合到光纤的端面。 变压器还包括第二波导，其包括第二芯，第二包层和直接耦合到第一波导的端部的端部。 第三波导包括第三芯和第三包层，并且相对于第二波导布置，以实现与第二波导的渐逝光耦合。 第三芯包括其中发生ev逝耦合的锥形区域，并且其中第一波导的折射率对比度小于第二波导的折射率对比度，第二波导的折射率对比度小于折射率对比度 并且第三波导的折射率对比度不小于18％。

公开(公告)号：US08320721B2

公开(公告)日：2012-11-27

申请号：US12919578

申请日：2008-02-29

申请人： Gaia Cevini ,  Paola Galli ,  Stefano Lorenzotti ,  Marco Piazza ,  Marco Romagnoli ,  Luciano Socci ,  Lorenzo Bolla ,  Silvia Ghidini

发明人： Gaia Cevini ,  Paola Galli ,  Stefano Lorenzotti ,  Marco Piazza ,  Marco Romagnoli ,  Luciano Socci ,  Lorenzo Bolla ,  Silvia Ghidini

IPC分类号： G02B6/30

CPC分类号： G02B6/305 ,  G02B6/1228

摘要： An optical mode transformer comprises a first waveguide including a first core, a first cladding and an end facet configured to be coupled to an optical fiber. The transformer further includes a second waveguide comprising a second core, a second cladding and an end directly coupled to an end of the first waveguide. A third waveguide comprises a third core and a third cladding, and is arranged with respect to the second waveguide so as to realize an evanescent optical coupling with the second waveguide. The third core includes a tapered region wherein evanescent coupling takes place, and wherein a refractive index contrast of the first waveguide is less than a refractive index contrast of the second waveguide, the refractive index contrast of the second waveguide is less than a refractive index contrast of the third waveguide, and the refractive index contrast of the third waveguide is not less than 18%.

摘要翻译： 光学模式变压器包括第一波导，其包括第一芯，第一包层和被配置为耦合到光纤的端面。 变压器还包括第二波导，其包括第二芯，第二包层和直接耦合到第一波导的端部的端部。 第三波导包括第三芯和第三包层，并且相对于第二波导布置，以实现与第二波导的渐逝光耦合。 第三芯包括其中发生ev逝耦合的锥形区域，并且其中第一波导的折射率对比度小于第二波导的折射率对比度，第二波导的折射率对比度小于折射率对比度 并且第三波导的折射率对比度不小于18％。