公开(公告)号：US20220069829A1

公开(公告)日：2022-03-03

申请号：US17006490

申请日：2020-08-28

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Mir Ashkan Seyedi ,  Thomas Van Vaerenbergh ,  Antoine Descos

IPC: H03L7/093 ,  H03L7/099 ,  H03K17/78 ,  H03K17/95 ,  G11C11/42 ,  G11C15/04 ,  G02B6/12

Abstract: One embodiment provides an optical encoder. The optical encoder includes an optical comb source to generate a multi-wavelength optical signal; a number of optical filters sequentially coupled to the optical comb source, with a respective optical filter being tunable to pass or block a particular wavelength of the multi-wavelength optical signal based on a corresponding bit value of a multi-bit search word; and a common output for the optical filters to output the filtered multi-wavelength optical signal, which encodes the multi-bit search word and can be used as an optical search signal for searching an optical content-addressable memory (CAM).

公开(公告)号：US11469764B2

公开(公告)日：2022-10-11

申请号：US17006490

申请日：2020-08-28

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Mir Ashkan Seyedi ,  Thomas Van Vaerenbergh ,  Antoine Descos

IPC: G11C15/04 ,  H03L7/093 ,  H03L7/099 ,  H03K17/78 ,  G02B6/12 ,  G11C11/42 ,  H03K17/95 ,  H04B10/2557

Abstract: One embodiment provides an optical encoder. The optical encoder includes an optical comb source to generate a multi-wavelength optical signal; a number of optical filters sequentially coupled to the optical comb source, with a respective optical filter being tunable to pass or block a particular wavelength of the multi-wavelength optical signal based on a corresponding bit value of a multi-bit search word; and a common output for the optical filters to output the filtered multi-wavelength optical signal, which encodes the multi-bit search word and can be used as an optical search signal for searching an optical content-addressable memory (CAM).

公开(公告)号：US20250123536A1

公开(公告)日：2025-04-17

申请号：US18485452

申请日：2023-10-12

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Yuan Yuan ,  Thomas Van Vaerenbergh ,  Antoine Descos ,  Stanley Cheung ,  Wayne Sorin ,  Yiwei Peng

IPC: G02F3/02 ,  G02F1/21 ,  G02F1/313

Abstract: An example optical system having an electro-optical (EO) logic gate connected to a controller is presented. The controller modulates a first encoded electrical signal and a second encoded electrical signal based on an operation selection input. The EO logic gate includes a first Mach Zehnder interferometer (MZI) coupled between an optical input port and an optical output port; a second MZI optically coupled in parallel with the first MZI; a first phase shifter adjacent to the first MZI and; and a second phase shifter adjacent to the second MZI. The phase shifters apply phase shifts to the optical signals propagating via the first and second MZIs based on the modulated first encoded electrical signal and the modulated second encoded electrical signal to cause an optical output at the optical output port to vary based on the logic operation of the first encoded electrical signal and the second encoded electrical signal.