公开(公告)号：US20190162986A1

公开(公告)日：2019-05-30

申请号：US16184495

申请日：2018-11-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Joong-Seon Choe ,  Chun Ju Youn ,  Heasin Ko ,  Kap-Joong Kim ,  Byung-seok Choi

IPC: G02F1/01 ,  G02F1/225 ,  H04L9/08

Abstract: Provided is an apparatus configured to split light into a plurality of polarizations, the apparatus including an input waveguide configured to receive the light, a first interferometer configured to split the light into a first polarization and a second polarization, and a second interferometer configured to split the light into a third polarization and a fourth polarization, wherein the first interferometer and the second interferometer are connected in parallel, the first interferometer comprises a first output waveguide configured to output the first polarization, and a second output waveguide configured to output the second polarization, and the second interferometer comprises a third output waveguide configured to output the third polarization, and a fourth output waveguide configured to output the fourth polarization.

公开(公告)号：US09031421B2

公开(公告)日：2015-05-12

申请号：US13934589

申请日：2013-07-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Joong-Seon Choe ,  Chun Ju Youn ,  Jong-Hoi Kim ,  Duk Jun Kim ,  Yong-Hwan Kwon ,  Kwang-Seong Choi ,  Eun Soo Nam

IPC: H04B10/06 ,  H04B10/077

CPC classification number: H04B10/0779

Abstract: Provided is a method of measuring signal transmission time difference of a measuring device. The measuring device according to embodiments, by measuring a skew on two optical paths through signal delays of sufficient sizes for skew measurement on the optical paths, even a skew having a minute size can be measured within a measurable range.

Abstract translation: 提供了测量装置的信号传输时间差的测量方法。 根据实施例的测量装置可以在可测量的范围内测量通过在光路上经过足够尺寸的信号延迟的信号延迟测量两个光路上的偏斜测量，甚至具有微小尺寸的偏斜。