公开(公告)号：US20210263300A1

公开(公告)日：2021-08-26

申请号：US17101302

申请日：2020-11-23

Applicant: Google LLC

Inventor： Thomas L. Haslett ,  Robert M. Krause ,  Jill Berger ,  Kevin Yasumura

IPC: G02B26/08 ,  G02B27/10

Abstract: A programmable beam blocker includes a liquid crystal based grid of pixels, one or more groups of pixels, or plurality of pixels, corresponding to individual beams of light. The application of a voltage through one pixel can change the phase of the liquid crystal material to prevent the transmission of light through it.

公开(公告)号：US20210255392A1

公开(公告)日：2021-08-19

申请号：US17034826

申请日：2020-09-28

Applicant: Google LLC

Inventor： Kevin Yasumura ,  Jill Berger

IPC: G02B6/28 ,  G02B6/32 ,  G02B26/08 ,  G02B27/30

Abstract: The present disclosure provides systems and methods for preventing or minimizing optical crosstalk in an optical circuit switch (“OCS”). The OCS may include a collimator lens assembly. The collimator lens assembly may include a lens array defined by a plurality of ports. Each port may include a lenslet and a spacer paired with each lenslet. Crosstalk may occur when light from other ports enter the target port's optical fiber. The collimator lens assembly may include an insert positioned relative to the lenslet. The insert may define an aperture that allows light from the target port to pass through. The insert may prevent a portion of light from adjacent ports from passing through the aperture. The insert may be located between the lenslet and spacer, on the curved surface of the lenslet, or on a plate located at a distance from the front of the lenslet.