公开(公告)号：US20190310418A1

公开(公告)日：2019-10-10

申请号：US16440814

申请日：2019-06-13

Applicant: Inphi Corporation

Inventor： Samira KARIMELAHI ,  Masaki KATO

IPC: G02B6/124 ,  G02B6/27 ,  G01M11/00 ,  G02B6/30 ,  G02B6/125 ,  G02B6/122 ,  G02B6/126

Abstract: A surface grating coupler for polarization splitting or diverse includes a planar layer and an array of scattering elements arranged in the planar layer at intersections of a first set of concentric elliptical curves crossing with a second set of concentric elliptical curves rotated proximately 90 or 180 degrees to form a two-dimensional (2D) grating. Additionally, the grating coupler includes a first waveguide in double-taper shape and a second waveguide in double-taper shape respectively for split or diverse an incident light into the 2D grating into two output light to two output ports with a same (either TE or TM) polarization mode or one output port with TE polarization mode and another output port with TM polarization mode. The polarization diverse grating coupler is required to test multiple polarization sensitive photonics components and can be used with other single polarization grating coupler via a fiber array to perform wafer-level testing.

公开(公告)号：US20190212496A1

公开(公告)日：2019-07-11

申请号：US16352636

申请日：2019-03-13

Applicant: INPHI CORPORATION

Inventor： Samira KARIMELAHI ,  Masaki KATO

IPC: G02B6/293 ,  H04L25/03 ,  H04B10/25 ,  G02B6/28

CPC classification number: G02B6/29391 ,  G02B6/2856 ,  G02B6/29344 ,  G02B6/29352 ,  H04B10/25 ,  H04L25/03885

Abstract: The present disclosure provides an optical equalizer for photonics system in an electric-optical communication network. The optical equalizer includes an input port and an output port. Additionally, the optical equalizer includes a filter having a number of stages coupled to each other in a multi-stage series with an output terminal of any stage being coupled to an input terminal of an adjacent next stage while the input terminal of a first stage of the multi-stage series being coupled from the input port. Each stage includes a tap terminal configured to pass an optical power factored by a coefficient of multiplication from the corresponding input terminal of the stage to a tap-output path characterized by a corresponding phase delay. Furthermore, the optical equalizer includes a combiner configured to sum up the optical powers respectively from the number of tap-output paths of the multi-stage series to the output port.