公开(公告)号：US20210096403A1

公开(公告)日：2021-04-01

申请号：US17060095

申请日：2020-10-01

Applicant: Drexel University

Inventor： Afshin S. Daryoush ,  Kai Wei

IPC: G02F1/035 ,  G02F1/065

Abstract: Performance improvement of an all-optical analog-to-digital converter (AOADC) addresses both RF and optical modeling of a leaky waveguide based optical spatial light modulator (SLM) using electro-optic (E-O) material. The E-O polymer provides improved sensitivity for SLM and achieves a broader bandwidth due to better velocity matching between RF and optical waves.

公开(公告)号：US20240267001A1

公开(公告)日：2024-08-08

申请号：US18567984

申请日：2022-06-10

Applicant: Drexel University

Inventor： Afshin S. Daryoush ,  Kai Wei

IPC: H03B28/00

CPC classification number: H03B28/00

Abstract: In absence of electrical approaches for realization of highly stable RF oscillator, opto-electronic oscillators (OEO) techniques are provided, where self-forced oscillation techniques using long optical delays demonstrate significant short-term and long-term frequency stability. Fully integrated opto-electronic oscillator chip (IOEC) may be the most efficient realization of an RF frequency synthesizer in terms of operation frequency (covering microwave and millimeter wave), size ( 10 dBm from under 1 W power). A free-running III-V (primarily InP) based multi-mode laser (MML) diodes is designed with large mode number (e.g., over 60 modes) and intermodal oscillation frequency compatible with desired RF carrier signal (e.g., 1-40 GHz).

公开(公告)号：US11906825B2

公开(公告)日：2024-02-20

申请号：US17060095

申请日：2020-10-01

Applicant: Drexel University

Inventor： Afshin S. Daryoush ,  Kai Wei

IPC: G02F1/29 ,  G02F1/035 ,  G02F1/065 ,  G02F1/295

CPC classification number: G02F1/0356 ,  G02F1/065 ,  G02F1/2955 ,  G02F2201/126 ,  G02F2201/127 ,  G02F2203/12

Abstract: Performance improvement of an all-optical analog-to-digital converter (AOADC) addresses both RF and optical modeling of a leaky waveguide based optical spatial light modulator (SLM) using electro-optic (E-O) material. The E-O polymer provides improved sensitivity for SLM and achieves a broader bandwidth due to better velocity matching between RF and optical waves.