公开(公告)号：US20240393540A1

公开(公告)日：2024-11-28

申请号：US18701661

申请日：2021-10-21

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tatsuya FUJIMOTO ,  Yoshiteru ABE ,  Ryo KOYAMA ,  Kazuhide NAKAE ,  Hiroshi WATANABE ,  Chisato FUKAI ,  Tomohiro KAWANO ,  Kazunori KATAYAMA

IPC: G02B6/35 ,  G02B6/38 ,  G02B6/40

Abstract: An object of this disclosure is to enable space saving of an optical fiber connection unit such as an optical switch.
According to this disclosure, there is provided an optical connection module that connects first and second multi-fiber connectors, in which the first and second multi-fiber connectors have optical fibers which are two-dimensionally arranged. In the first multi-fiber connector, optical fibers connected to a same optical switch are arranged in a vertical direction, and optical fibers connected to different optical switches are arranged in parallel in a horizontal direction. In the second multi-fiber connector, optical fibers connected to a same optical switch are arranged in a horizontal direction, and optical fibers connected to different optical switches are arranged in parallel in a vertical direction.

公开(公告)号：US20240329325A1

公开(公告)日：2024-10-03

申请号：US18697568

申请日：2021-10-11

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tatsuya FUJIMOTO ,  Kazunori KATAYAMA ,  Ryo KOYAMA ,  Kazuhide NAKAE ,  Hiroshi WATANABE ,  Yoshiteru ABE ,  Tomohiro KAWANO ,  Chisato FUKAI

IPC: G02B6/35

CPC classification number: G02B6/3566 ,  G02B6/3582 ,  G02B6/3588

Abstract: An object of the present disclosure is to provide an optical switch that does not require power supply.
The present disclosure is an optical switch including: an optical drive unit including an optical expansion body that expands by irradiation with light and contracts by blocking of light, a knock rod that converts the expansion and contraction of the optical expansion body into linear motion that reciprocates by a certain distance, and a rotary moving body that includes a rotor, and converts the linear motion into rotary motion that rotates by a certain angle about an axis of the rotor in accordance with the linear motion that reciprocates by a certain distance by the knock rod; and an optical switching unit including a first optical connection body to which one switching target optical fiber is fixed, a second optical connection body to which each optical fiber of a switching target optical fiber group is fixed, and a connection rotation body that is fixed to the rotor of the rotary moving body, rotates about the axis of the rotor, and switches and connects the one switching target optical fiber fixed to the first optical connection body in contact with one end surface and one optical fiber in the switching target optical fiber group fixed to the second optical connection body in contact with the other end surface.

公开(公告)号：US20240201450A1

公开(公告)日：2024-06-20

申请号：US18286196

申请日：2021-05-17

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yoshiteru ABE ,  Ryo KOYAMA ,  Chisato FUKAI ,  Kazunori KATAYAMA

IPC: G02B6/38 ,  B08B1/14 ,  B08B1/30 ,  B08B11/02

CPC classification number: G02B6/3866 ,  B08B1/143 ,  B08B1/30 ,  B08B11/02 ,  B08B2240/02

Abstract: An object of the present disclosure is to provide an optical connector cleaning tool capable of cleaning a ferrule end surface with an appropriate force regardless of an operator.
The present disclosure is an optical connector cleaning tool including a housing that stores a cleaning sheet, an opening portion through which a part of the cleaning sheet is exposed from the housing, a slide mechanism that causes the cleaning sheet exposed to the opening portion to slide, a cleaning sheet support portion that is fixed to the housing and supports the cleaning sheet toward the opening portion, a plug holding unit that holds an optical connector plug having a ferrule disposed at a distal end thereof at the opening portion, and a pressing portion that applies a pressing force between the cleaning sheet support portion and the plug holding unit.

公开(公告)号：US20240045152A1

公开(公告)日：2024-02-08

申请号：US17641052

申请日：2020-09-10

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yasunari TANAKA ,  Ryo KOYAMA ,  Masaaki TAKAYA ,  Yoshiteru ABE ,  Chisato FUKAI

IPC: G02B6/38 ,  G02B6/40

CPC classification number: G02B6/3838 ,  G02B6/403

Abstract: The present disclosure has an object to provide a multicore optical connector that can achieve size reduction and pitch reduction without performing highly accurate machining of V-grooves or the like. The present disclosure is a multicore optical connector including a holding member 11 having a flat bottom surface 14B, and provided with a groove that enables a plurality of optical fibers 91 to be arranged along the bottom surface 14B, the plurality of optical fibers 91 stored in a row on the bottom surface of the groove, and a lid 15 that is in contact with all the plurality of optical fibers 91 and is fixed to the plurality of optical fibers 91 and the holding member 11 in a state in which the plurality of optical fibers 91 are pressed against the bottom surface 14B of the groove to form a long hole 12 at the groove 14.

公开(公告)号：US20210341687A1

公开(公告)日：2021-11-04

申请号：US17285810

申请日：2019-10-09

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Masaaki TAKAYA ,  Kazunori KATAYAMA ,  Yoshiteru ABE ,  Ryo KOYAMA ,  Chisato FUKAI ,  Yusuke YAMADA

IPC: G02B6/40 ,  G02B6/38

Abstract: An object is to provide a multifiber optical connector and an optical cable connection method capable of reducing a connection time and reducing an installation space of a connection portion. The multifiber optical connector according to the present invention includes three position adjustment units, and performs rough alignment to fine alignment of optical fiber end faces by using sequentially these position adjustment units when optical cables are connected. The multifiber optical connector simultaneously connects the end faces of the plurality of optical fibers included in the optical cables, and thus, an extra optical fiber tape is not present, and a closure needed in the related art is not necessary.