公开(公告)号：WO2021062206A1

公开(公告)日：2021-04-01

申请号：PCT/US2020/052796

申请日：2020-09-25

Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

Inventor： MOEBIUS, Michael Gerhard ,  SPECTOR, Steven J. ,  COOK, Eugene Hightower ,  BERNSTEIN, Jonathan J.

IPC: G02B6/35 ,  G02B6/12

Abstract: MEMS-actuated optical switches can be implemented on photonic chips. These switches are compact, essentially planar, simple to implement and include only one moving MEMS component per switch. The switches exhibit low optical loss, require low power to operate, and are simple to control and easy to integrate with other optical devices. Each switch has two optical waveguides that are optically coupled in an ON switch state and not coupled in an OFF switch state. An end or a medial section of one of the two waveguides may translate between the ON and OFF states to affect the coupling. Alternatively, a coupling frustrator may translate between the ON and OFF states to affect the coupling.

公开(公告)号：WO2018209091A1

公开(公告)日：2018-11-15

申请号：PCT/US2018/032073

申请日：2018-05-10

Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

Inventor： FRANK, Ian Ward ,  CALLAHAN, Dennis M., Jr. ,  BYRNES, Steven J. ,  MOEBIUS, Michael Gerhard ,  FAVALORA, Gregg E.

IPC: G02F1/125 ,  G02F1/335 ,  G03H1/22

CPC classification number: G02F1/335 ,  G02F1/125 ,  G02F1/332 ,  G02F2203/24 ,  G03H1/2294 ,  G03H2001/0224

Abstract: A system and method for a Surface Acoustic Wave (SAW) spatial light modulator module, or SAW device that provides varying acoustic wave speed are disclosed. The SAW device includes a substrate of a material such as lithium niobate, and a coating layer is applied to the substrate. A SAW transducer of the device is configured to produce SAW signals that propagate with a propagation velocity around an interface between the substrate and the coating layer. The SAW signals couple light signals of a light source into modulated light signals that are emitted from the bottom face and/or edge face of the substrate. In embodiments, a frequency of RF drive signals applied to the SAW transducer in conjunction with the propagation velocity of the SAW signals produces a decrease in a SAW wavelength of the SAW signals as compared to current SAW device systems and methods.