公开(公告)号：US20190041578A1

公开(公告)日：2019-02-07

申请号：US16054145

申请日：2018-08-03

Applicant: FINISAR CORPORATION

Inventor： Daniel Mahgerefteh ,  Ying Luo ,  Jin-Hyoung Lee ,  Shiyun Lin

IPC: G02B6/12

Abstract: In one example embodiment, an integrated silicon photonic wavelength division demultiplexer includes an input waveguide, an input port, a plurality of output waveguides, a plurality of output ports, a first auxiliary waveguide, and a plurality of auxiliary waveguides. The input waveguide may be formed in a first layer and having a first effective index n1. The input port may be optically coupled to the input waveguide. The output waveguides may be formed in the first layer and may have the first effective index n1. Each of the output ports may be optically coupled to a corresponding output waveguide. The first auxiliary waveguide may be formed in a second layer below the input waveguide in the first layer. The first auxiliary waveguide may have a second effective index n2 and may have two tapered ends, and n2 may be higher than n1.

公开(公告)号：US10473858B1

公开(公告)日：2019-11-12

申请号：US16271471

申请日：2019-02-08

Applicant: Finisar Corporation

Inventor： Daniel Mahgerefteh ,  Ying Luo ,  Shiyun Lin ,  Jin-Hyoung Lee

IPC: G02B6/12 ,  G02B6/14 ,  G02B6/125 ,  G02B6/122

Abstract: An optical waveguide may include a silicon portion and a silicon nitride portion positioned over the silicon portion. The silicon portion may include a taper that decreases a width of the silicon portion. The optical waveguide may include a transition between a loaded single mode or multimode waveguide to a single mode waveguide. The silicon nitride portion may confine optical signals traveling through the optical waveguide in the silicon portion.

公开(公告)号：US20200257180A1

公开(公告)日：2020-08-13

申请号：US16271467

申请日：2019-02-08

Applicant: Finisar Corporation

Inventor： Daniel Mahgerefteh ,  Ying Luo ,  Shiyun Lin ,  Jin-Hyoung Lee

IPC: G02F1/225

Abstract: In one example embodiment, an optical circuit for optical modulation of light may include an input waveguide including a first thickness, an optical modulator including a second thickness, and a tapered transition that optically couples the optical modulator and the input waveguide. The second thickness may be smaller than the first thickness. The tapered transition may adiabatically transform the optical mode of the input waveguide to the optical modulator.