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    • 1. 发明授权
    • Adiabatic polarization manipulating device
    • 绝热偏振操纵装置
    • US4998793A
    • 1991-03-12
    • US437049
    • 1989-11-14
    • Charles H. HenryRudolf F. KazarinovYosi Shani
    • Charles H. HenryRudolf F. KazarinovYosi Shani
    • G02B6/126G02B6/34
    • G02B6/126G02B6/2726G02B6/29361
    • A TE-TM polarization manipulating (i.e., splitting, combining or filtering) device is constructed from substrate-supported dielectric thin film waveguides. In a 3-port device, two waveguides have cores of different materials and different effective refractive indices. The waveguide cores overlap in a first transition section and one waveguide core has an adiabatic taper; in this section they also separate adiabatically in and are coupled to a second (e.g., output) section where the waveguides are physically separate and optically decoupled. In a 4-port device, two additional waveguides are coupled in a second adiabatic transition section to the first transition section to enable TE or TM modes to be coupled straight through the device from one input port to a directly opposite output port or to be crossed-over from one input port to a diagonally opposite output port.
    • 由衬底支撑的电介质薄膜波导构成TE-TM偏振操作(即,分离,组合或滤波)器件。 在3端口器件中,两个波导具有不同材料和不同有效折射率的芯。 波导芯在第一过渡段中重叠,一个波导芯具有绝热锥度; 在这一部分中,它们还绝热地分离并耦合到第二(例如,输出)部分,其中波导在物理上是分开的并且是光学去耦合的。 在4端口设备中,两个附加波导在第二绝热过渡部分耦合到第一过渡部分,以使得TE或TM模式能够通过设备从一个输入端口直接耦合到直接相对的输出端口或被交叉 - 从一个输入端口到对角线相对的输出端口。