Abstract

Disclosed are embodiments of an on-chip polarizer and of methods of forming the polarizer. The polarizer includes first and second waveguides with different shapes at different design levels above a substrate. The first waveguide has a main body between an input end and an output end. The second waveguide is spiral in shape with an inner end and with an outer end that is evanescently coupled to the main body of the first waveguide. Light signals, including first light signals with a first type polarization and second light signals with a second type polarity, are received at the input end of the first waveguide. The first waveguide passes the first light signals to the output end and passes at least some second light signals out the main body and into the outer end of the second waveguide. The second waveguide attenuates the received second light signals.

Date

September 21, 2021

Authors

Y Bian, AP Jacob

Inventors

Yusheng Bian, Ajey Poovannummoottil Jacob

Patent_office

US

Patent_number

11125944

Application_number

16741792