公开(公告)号：US10571335B2

公开(公告)日：2020-02-25

申请号：US16275747

申请日：2019-02-14

Applicant: Massachusetts Institute of Technology

Inventor： Juejun Hu ,  Tian Gu ,  Kazumi Wada ,  Anuradha Murthy Agarwal ,  Lionel Cooper Kimerling ,  Derek Kita ,  Junying Li ,  Fleur Jacolien Fok

IPC: G01J3/00 ,  G01J3/12 ,  G01J3/02 ,  G01J3/28 ,  G01J3/32

Abstract: An apparatus for generating a spectral image includes a filter to receive incident light. The filter has a variable refractive index. The apparatus also includes a modulator, operably coupled to the filter, to modulate the variable refractive index of the filter so as to generate a plurality of optical patterns from the incident light. The plurality of optical patterns represents the spectral image and each optical pattern in the plurality of optical patterns corresponds to a different modulation of the variable refractive index. The apparatus further includes a detector, in optical communication with the filter, to detect the plurality of optical patterns.

公开(公告)号：US11231603B2

公开(公告)日：2022-01-25

申请号：US16826489

申请日：2020-03-23

Applicant: Massachusetts Institute of Technology

Inventor： Zhuoran Fang ,  Tian Gu ,  Juejun Hu ,  Junying Li ,  Yifei Zhang

IPC: G02F1/01 ,  C22C30/00 ,  G02F1/225 ,  C23C14/06 ,  G02F1/00 ,  G02F1/21

Abstract: An alloy of GexSbySezTem includes atoms of Ge, Sb, Se, and Te that form a crystalline structure having a plurality of vacancies randomly distributed in the crystalline structure. The alloy can be used to construct an optical device including a first waveguide to guide a light beam and a modulation layer disposed on the first waveguide. The modulation includes the alloy of GexSbySezTem which has a first refractive index n1 in an amorphous state and a second refractive index n2, greater than the first refractive index by at least 1, in a crystalline state. The first waveguide and the modulation layer are configured to guide about 1% to about 50% of the light beam in the modulation layer when the alloy is in the amorphous state and guide no optical mode when the alloy is in the crystalline state.

公开(公告)号：US20190285473A1

公开(公告)日：2019-09-19

申请号：US16275747

申请日：2019-02-14

Applicant: Massachusetts Institute of Technology

Inventor： Juejun Hu ,  Tian Gu ,  Kazumi Wada ,  Anuradha Murthy Agarwal ,  Lionel Cooper Kimerling ,  Derek Kita ,  Junying Li ,  Fleur Jacolien Fok

IPC: G01J3/12 ,  G01J3/02 ,  G01J3/32 ,  G01J3/28

Abstract: An apparatus for generating a spectral image includes a filter to receive incident light. The filter has a variable refractive index. The apparatus also includes a modulator, operably coupled to the filter, to modulate the variable refractive index of the filter so as to generate a plurality of optical patterns from the incident light. The plurality of optical patterns represents the spectral image and each optical pattern in the plurality of optical patterns corresponds to a different modulation of the variable refractive index. The apparatus further includes a detector, in optical communication with the filter, to detect the plurality of optical patterns.