Invention Grant
US08483528B2 Optical mode transformer, in particular for coupling an optical fiber and a high-index contrast waveguide
有权
光模式变压器，特别是用于耦合光纤和高折射率对比度波导
- Patent Title: Optical mode transformer, in particular for coupling an optical fiber and a high-index contrast waveguide
- Patent Title (中): 光模式变压器，特别是用于耦合光纤和高折射率对比度波导
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Application No.: US12919591Application Date: 2008-02-29
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Publication No.: US08483528B2Publication Date: 2013-07-09
- Inventor: Luciano Socci , Lorenzo Bolla , Paola Galli , Marco Romagnoli , Silvia Ghidini
- Applicant: Luciano Socci , Lorenzo Bolla , Paola Galli , Marco Romagnoli , Silvia Ghidini
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Honigman Miller Schwartz and Cohn LLP
- International Application: PCT/EP2008/052494 WO 20080229
- International Announcement: WO2009/106139 WO 20090903
- Main IPC: G02B6/26
- IPC: G02B6/26 ; G02B6/42 ; G02B6/10
Abstract:
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. A second waveguide comprises a second core and a second cladding, and is arranged with respect to the first waveguide so as to realize an evanescent optical coupling with the first waveguide. The second core comprises a tapered region, in at least a portion of which the evanescent coupling takes place.The first core and the second core are separated by a gap. A first refractive index contrast of the first waveguide is less than a second refractive index contrast of the second waveguide.
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