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公开(公告)号：WO2019048740A1
公开(公告)日：2019-03-14
申请号：PCT/FI2018/050635
申请日：2018-09-07
发明人： AALTO, Timo , CHERCHI, Matteo , HARJANNE, Mikko , GUINA, Mircea
IPC分类号： G02B6/26 , G02B6/13 , G02B6/42 , H01L21/52 , H01L23/13 , H01L21/56 , H01S5/10 , H04B10/00 , B82Y20/00 , H01L23/00
摘要： According to an example aspect of the present invention, there is provided a method for integrating photonic circuits (201, 203) comprising optical waveguides (204, 205), where a smaller chip (203) with at least one first photonic circuit is aligned and bonded on top of a larger chip (201) having at least one second photonic circuit in order to couple light between optical waveguides (204, 205) on each chip (201, 203), wherein optical coupling between the waveguides (204, 205) on said chips (201, 203) occurs from a single side (211) of said smaller chip.
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公开(公告)号：WO2014060648A1
公开(公告)日：2014-04-24
申请号：PCT/FI2013/050987
申请日：2013-10-15
发明人： CHERCHI, Matteo , AALTO, Timo
CPC分类号： G02B6/262 , G02B6/02047 , G02B6/1223 , G02B6/125
摘要： An optical multi-mode HIC (high index contrast) waveguide (102,104, 201, 301) for transporting electromagnetic radiation in the optical waveband, the waveguide comprising a guiding core portion (204) with higher refractive index, and cladding portion (206) with substantially lower refractive index configured to at least partially surround the light guiding core in the transverse direction to facilitate confining the propagating radiation within the core, the waveguide being configured to support multiple optical modes of the propagating radiation, wherein the waveguide incorporates a bent waveguide section (202) having bend curvature that is configured to at least gradually, preferably substantially continuously, increase towards a maximum curvature of said section from a section end.
摘要翻译： 一种用于传输光波段中的电磁辐射的光学多模式HIC（高折射率对比度）波导（102,104,201,301），所述波导包括具有较高折射率的引导芯部分（204）和包层部分（206） 基本上较低的折射率被配置为在横向方向上至少部分地围绕导光芯，以便于将传播辐射限制在芯内，波导被配置为支持传播辐射的多个光学模式，其中波导包括弯曲的波导部分 （202）具有弯曲曲率，其被配置为至少逐渐地，优选地基本上连续地朝向所述部分的截面端部的最大曲率增加。
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公开(公告)号：WO2020089530A1
公开(公告)日：2020-05-07
申请号：PCT/FI2019/050777
申请日：2019-10-31
发明人： AALTO, Timo
摘要： The invention relates to devices and methods for polarization splitting, where a first optical coupler (22) having at least one input port which receives an input light beam (21), and at least two output ports at which said light beam, is split into at least a first and a second arms (24, 25) at a first end of said arms. At least one total internal reflection mirror (26) is coupled to the second arm (25) for inducing polarization-dependent phase shifts to the light beam propagating in the second arm, and a polarization-dependent phase difference between the second and the first arm. A second optical coupler (23) having input ports is coupled to the second and opposite ends of the arms. The second coupler has at least one first output port at which light is coupled from said arms, so that the polarization-dependent phase shift of the at least one total internal reflection mirror causes polarization-dependent coupling of light from said input port to said output port.
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公开(公告)号：WO2019038477A1
公开(公告)日：2019-02-28
申请号：PCT/FI2018/050595
申请日：2018-08-22
发明人： CHERCHI, Matteo , PETROV, Alexander , JALAS, Dirk , HARJANNE, Mikko , AALTO, Timo , EICH, Manfred
摘要： The invention relates to optical waveguide components, such as Faraday rotators and their manufacture. Faraday rotators based on silicon waveguides (40) are provided, where the waveguide (40) has folded or wound sections (41 a) that are parallel to an externally applied magnetic field (B bias ).
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公开(公告)号：WO2021123505A1
公开(公告)日：2021-06-24
申请号：PCT/FI2020/050856
申请日：2020-12-18
发明人： AALTO, Timo
IPC分类号： G02B6/122 , G02B6/125 , G02B6/30 , G02B6/42 , G02B6/12 , G02B2006/12152 , G02B6/1228 , G02B6/305 , G02B6/422 , G02B6/423
摘要： An optical assembly for realizing horizontal and vertical spot-size conversion to couple light from a thin waveguide to a thick waveguide is disclosed. The assembly comprises at least one first thin waveguide with a first section having a first optical mode field and a horizontal spot-size expansion section providing spot-size conversion for a first horizontal dimension of said first optical mode field of a light beam propagating in said first waveguide, and at least one second thick waveguide with a second section having a second optical mode field and a horizontal spot-size reduction section providing spot-size conversion for a second horizontal dimension of said second optical mode field of a light beam propagating in said second waveguide. The expanded end of said first waveguide is aligned and rotated to interface with the reduced end of said second waveguide, so that the mode fields in said first and second waveguides are rotated 90 degrees with respect to each other, whereby the spot size of a light beam so coupled between the first and second waveguides is expanded or shrunk in both transverse dimensions, depending on the direction of the light beam.
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公开(公告)号：WO2018193167A1
公开(公告)日：2018-10-25
申请号：PCT/FI2018/050287
申请日：2018-04-23
发明人： CHERCHI, Matteo , AALTO, Timo , ARPIAINEN, Sanna
摘要： The invention relates to photonic circuits, in particular to photonic circuits where light is escalated transferred between optical waveguides which are coupled to photonic devices. A first waveguide (33a) on a silicon substrate (34) is provided having a first thickness and a first refractive index. A tapered second waveguide (32) having a second thickness less than the first thickness and a second refractive index higher than said first refractive index is deposited on the first waveguide. At least one layer of an optically active material (31) comprising a photonic device is deposited on the first waveguide adjacent to the second waveguide. The photonic device is interfaced with the wide end of the tapered second waveguide to provide an optical coupling, and the opposite narrow end of the tapered second waveguide is interfaced on top of the first waveguide to provide adiabatic light transfer between said first and second waveguides.
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