| 发明名称 |
Athermal photonic waveguide with refractive index tuning |
| 摘要 |
In a photonic waveguide, there is provided an undercladding layer and a waveguide core, having a cross-sectional height and width, that is disposed on the undercladding layer. The waveguide core comprises a waveguide core material having a thermo-optic coefficient. A refractive index tuning cladding layer is disposed on top of the waveguide core. The refractive index tuning cladding layer comprises a refractive index tuning cladding material having an adjustable refractive index and an absorption length at a refractive index tuning radiation wavelength. A thermo-optic coefficient compensation cladding layer is disposed on top of the refractive index tuning cladding layer. The thermo-optic coefficient compensation cladding layer comprises a thermo-optic coefficient compensation material having a thermo-optic coefficient that is of opposite sign to the thermo-optic coefficient of the waveguide core material. The thermo-optic coefficient compensation cladding layer provides at least partial compensation for the waveguide core thermo-optic coefficient. |
| 申请公布号 |
US9110221(B2) |
申请公布日期 |
2015.08.18 |
| 申请号 |
US201313763090 |
申请日期 |
2013.02.08 |
| 申请人 |
Massachusetts Institute of Technology |
发明人 |
Agarwal Anuradha M.;Canciamilla Antonio;Morichetti Francesco;Grillanda Stefano;Kimerling Lionel C.;Melloni Andrea;Michel Jurgen;Raghunathan Vivek;Singh Vivek |
| 分类号 |
G02B6/10;G02B6/26;G02B6/00;G02B6/036;G02B6/122;G02B6/02 |
主分类号 |
G02B6/10 |
| 代理机构 |
|
代理人 |
Lober Theresa A. |
| 主权项 |
1. A photonic waveguide comprising:
an undercladding layer; a waveguide core having a cross-sectional height and width disposed on the undercladding layer and comprising a waveguide core material having a thermo-optic coefficient; a refractive index tuning cladding layer disposed on top of the waveguide core and comprising a refractive index tuning cladding material having an adjustable refractive index and an absorption length at a refractive index tuning radiation wavelength; and a thermo-optic coefficient compensation cladding layer disposed on top of the refractive index tuning cladding layer and comprising a thermo-optic coefficient compensation material having a thermo-optic coefficient that is of opposite sign to the thermo-optic coefficient of the waveguide core material and that provides at least partial compensation for the waveguide core thermo-optic coefficient. |
| 地址 |
Cambridge MA US |
