公开(公告)号：US20180323875A1

公开(公告)日：2018-11-08

申请号：US16038122

申请日：2018-07-17

Applicant: Google LLC

Inventor： Liang Du ,  Yut Loy Chan ,  Xiangjun Zhao ,  Changhong Joy Jiang ,  Cedric Fung Lam ,  Daoyi Wang ,  Tao Zhang

IPC: H04B10/25 ,  H04J14/02

CPC classification number: H04B10/2503 ,  H04J14/0227 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/0287 ,  H04J14/0291

Abstract: A carrier office includes an optical line terminal, a first transmit-erbium-doped fiber amplifier (EDFA), and a second transmit-EDFA. The OLT is configured to transmit first and second optical signals. The first transmit-EDFA is optically coupled to the OLT and a first feeder fiber, and the first feeder fiber is optically coupled to a first remote node (RN). The first transmit-EDFA is operable between a respective enabled state and a respective disabled state. The second transmit-EDFA is optically coupled to the OLT and a second feeder fiber, and the second feeder fiber is optically coupled to a second RN. The second transmit-EDFA is operable between a respective enabled state and a respective disabled state.

公开(公告)号：US11693197B2

公开(公告)日：2023-07-04

申请号：US17358314

申请日：2021-06-25

Applicant: Google LLC

Inventor： Daoyi Wang ,  Ryohei Urata ,  Lieven Verslegers ,  Jan Petykiewicz

IPC: G02B6/42 ,  G02B6/12 ,  G02B6/30

CPC classification number: G02B6/4242 ,  G02B6/12 ,  G02B6/30 ,  G02B6/423 ,  G02B6/4249

Abstract: A system for passive alignment of fibers to an interface of a photonic integrated circuit (PIC) includes an input frame, an actuator, and an output frame. The actuator arranged to apply force along a force axis to the input frame. The output frame including a tip for picking up a plate and transferring the force thereto, the output frame being connected to the input frame such that the output frame may tilt relative to the input frame and the output frame is elastically biased relative to the input frame into a position wherein the tip is aligned on the force axis.

公开(公告)号：US20200241222A1

公开(公告)日：2020-07-30

申请号：US16261211

申请日：2019-01-29

Applicant: Google LLC

Inventor： Daoyi Wang ,  Lieven Verslegers ,  Ryohei Urata

IPC: G02B6/42

Abstract: A photonic integrated circuit for coupling a laser from an optical assembly to a grating coupler is disclosed. A method for coupling a laser to a photonic integrated circuit is disclosed. The optical assembly includes an optical system disposed on a v-groove bench. The optical system typically includes a laser source, a coupling lens or lens system, an optional isolator, a beam redirector that includes a prism or other light turning element and a cylindrical tube mounted on the v-groove bench. The method of tuning the angle of incidence from the optical assembly to the grating coupler is also disclosed.