发明名称 |
Combined splitter, isolator and spot-size converter |
摘要 |
An integrated and compact multifunctional optical isolator (i.e., a combined splitter, isolator, and spot-size converter), which is suitable for use in a TOSA, includes input optics including a first polarizer, a Faraday rotator, and a second polarizer. The input optics include a wedge having a partially reflective coating disposed on a first face thereof. The input beam is incident on the first face at a non-normal angle of incidence such light passing through the wedge is refracted to a second face of the wedge, which is tilted relative to the first face by a predetermined wedge angle. At least one of the non-normal angle of incidence and the predetermined wedge angle is determined dependence upon a refractive index of the wedge material and a target anamorphic magnification of the input beam of light. |
申请公布号 |
US9563073(B2) |
申请公布日期 |
2017.02.07 |
申请号 |
US201414316997 |
申请日期 |
2014.06.27 |
申请人 |
Lumentum Operations LLC |
发明人 |
Xiong Wei;Larson Michael C.;Li Zhaoming;Zhou Fenhong |
分类号 |
G02B27/28;G02F1/09;G02B6/27;G02B6/32;G02B6/42 |
主分类号 |
G02B27/28 |
代理机构 |
Harrity & Harrity, LLP |
代理人 |
Harrity & Harrity, LLP |
主权项 |
1. A multifunctional optical isolator comprising:
an input port for transmitting an input beam of light; input optics optically disposed between the input port and an output port, the input optics comprising a first polarizer for transmitting light having a first polarization; a second polarizer optically disposed between the input optics and the output port oriented to transmit light having a second polarization, the first polarization being different than the second polarization; and a non-reciprocal rotator optically disposed between the input optics and the second polarizer oriented to rotate a polarization of light transmitted therethrough such that light propagating in a forward propagating direction having the first polarization passes through the second polarizer to the output port, and light propagating in a backward propagation direction having the second polarization is not passed through the first polarizer to the input port, wherein the input optics comprises a wedge having a partially reflective coating disposed on a first face thereof, the partially reflective coating for reflecting a first portion of the input beam of light away from the wedge and allowing a second portion of the input beam of light to pass into the wedge, the first face oriented to receive the input beam of light at a non-normal angle of incidence and refracting the second portion of the input beam of light to a second face of the wedge, the first face tilted relative to the second face by a predetermined wedge angle, at least one of the non-normal angle of incidence or the predetermined wedge angle determined in dependence upon a refractive index of a wedge material and a target anamorphic magnification of the input beam of light. |
地址 |
Milpitas CA US |