公开(公告)号：US20240036259A1

公开(公告)日：2024-02-01

申请号：US18221962

申请日：2023-07-14

申请人： The Government of the United States of America, as represented by the Secretary of the Navy

发明人： Marcel W. Pruessner ,  Todd H. Stievater ,  Nathan F. Tyndall

IPC分类号： G02B6/27 ,  G02B6/35 ,  G02B6/126

CPC分类号： G02B6/2766 ,  G02B6/3584 ,  G02B6/126

摘要： An apparatus includes a polarization rotator or a polarization splitter. The polarization rotator and the polarization splitter each includes a first optical waveguide. The polarization rotator further includes a movable symmetry-breaking micro-electro-mechanical systems (“MEMS”) dielectric perturber separated from the first optical waveguide by a gap. The first optical waveguide and the MEMS dielectric perturber define a gap therebetween. The polarization rotator also includes a MEMS actuator moving the MEMS dielectric perturber so as to control the gap, thereby controlling polarization rotation within the first optical waveguide. The polarization splitter includes a second optical waveguide separated from the first optical waveguide by a gap. The polarization splitter also includes a MEMS actuator moving the first optical waveguide and/or the second optical waveguide so as to control the gap, thereby controlling polarization splitting between the optical waveguides.

公开(公告)号：US11692982B2

公开(公告)日：2023-07-04

申请号：US16870027

申请日：2020-05-08

申请人： The Government of the United States of America, as represented by the Secretary of the Navy

发明人： Robert Furstenberg ,  Christopher Breshike ,  Todd H. Stievater ,  Dmitry Kozak ,  R. Andrew McGill

IPC分类号： B01J20/28 ,  B01J20/32 ,  G01N30/60 ,  G01N30/02

CPC分类号： G01N30/6095 ,  B01J20/28052 ,  B01J20/32 ,  B01J2220/54 ,  G01N2030/025

摘要： Presented herein is a new concept of uniformly spin coating a flat surface with a stationary phase and creating a gas chromatography column by pressing a grooved lid, with micro-stamped ridges, down onto the coated substrate. The lids are molded out of commercially available rigid materials including epoxies so that when pressed onto a flat surface it will create an air tight seal. The epoxy material is rendered inert by a thin layer of gold.

公开(公告)号：US20160273912A1

公开(公告)日：2016-09-22

申请号：US15168921

申请日：2016-05-31

申请人： The Government of the United States of America, as represented by the Secretary of the Navy

发明人： Marcel W. Pruessner ,  Todd H. Stievater ,  William S. Rabinovich

IPC分类号： G01B11/16 ,  G01B9/02 ,  G01B11/14

CPC分类号： G01B11/161 ,  G01B9/02023 ,  G01B9/02051 ,  G01B11/026 ,  G01B11/14 ,  G01D5/35329

摘要： A method and system described for sensing a displacement by receiving and propagating a laser light signal with an etched waveguide that is configured to enable an evanescent optical field above the waveguide surface. A movable perturber can be positioned so the perturber interacts with the evanescent optical field above the waveguide surface. An optical phase shift can be induced in the waveguide when the movable perturber is displaced in the evanescent optical field, and the optical phase shift can be measured with an optical readout circuit.