公开(公告)号：US20240356310A1

公开(公告)日：2024-10-24

申请号：US18227667

申请日：2023-07-28

Applicant: Google LLC

Inventor： Massimiliano Salsi ,  Valey Kamalov ,  Giorgio Grasso ,  Aldo Righetti ,  Alessandro Petocchi

IPC: H01S5/50 ,  H01S5/02251

CPC classification number: H01S5/5036 ,  H01S5/02251

Abstract: Polarization-insensitive optical amplifiers are an alternative to current Erbium Doped Fiber Amplifiers, which provide wideband coverage while remaining cost and space effective for use in submarine cable applications. Polarization-insensitive optical amplifiers are an improvement to current semiconductor optical amplifier systems by providing desirable polarization-dependent gain and wideband coverage. This is achieved using polarization rotators comprised of a SOI-based waveguide and a twisted optical circuit.