US Patent Application 17751777. VERTICAL POLARIZING BEAMSPLITTER FOR PHOTONICS simplified abstract
Contents
VERTICAL POLARIZING BEAMSPLITTER FOR PHOTONICS
Organization Name
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Inventor(s)
Tai-Chun Huang of New Taipei (TW)
Stefan Rusu of Sunnyvale CA (US)
VERTICAL POLARIZING BEAMSPLITTER FOR PHOTONICS - A simplified explanation of the abstract
This abstract first appeared for US patent application 17751777 titled 'VERTICAL POLARIZING BEAMSPLITTER FOR PHOTONICS
Simplified Explanation
- The patent application describes a photonic polarizing beamsplitter. - The beamsplitter consists of a first waveguide and a second waveguide positioned above the first waveguide. - A birefringent coupler is present between the first and second waveguides. - The birefringent coupler has different effective refractive indices for TM and TE modes compared to the first waveguide. - The second waveguide is designed with outwardly tapering legs and a gap between adjacent legs, connected downstream to a body. - The innovation allows the vertical beamsplitter to occupy less surface area.
Original Abstract Submitted
A photonic polarizing beamsplitter is disclosed. The beamsplitter comprises a first waveguide, a second waveguide located above the first waveguide, and a birefringent coupler between the first waveguide and the second waveguide. The birefringent coupler has an effective refractive index for a TM mode which is greater than a refractive index of the first waveguide, and an effective refractive index for a TE mode which is less than the refractive index of the first waveguide. The second waveguide comprises a plurality of outwardly tapering legs with a gap between adjacent legs that are connected downstream to a body. The vertical beamsplitter uses less surface area.
