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Optical repeater and optical connector device

a technology of optical repeaters and optical connectors, applied in electromagnetic repeaters, optics, instruments, etc., can solve problems such as misalignment, and achieve the effect of suppressing misalignmen

Active Publication Date: 2016-09-29
FUJIKURA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When magnitude of coefficient of linear expansion of the optical connectors and coefficient of linear expansion of the substrate are different from each other, due to the difference in coefficient of linear expansion during temperature change, there is a possibility that misalignment may occur.

Method used

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  • Optical repeater and optical connector device
  • Optical repeater and optical connector device
  • Optical repeater and optical connector device

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0029]FIG. 1 is a perspective view of an optical connector device 1 of a first embodiment as seen from below. Further, FIG. 2A is a view seen from a side, and FIG. 2B is a view seen from a front-rear direction. FIG. 2A and FIG. 2B show a partial section as transparent, for the sake of explanation.

[0030]In the below explanation, each direction is defined as shown in the drawings. In other words, a direction perpendicular to a light guide substrate 10 is referred to as an “up-down direction” and a side to which an optical connector 20 is to be attached to the light guide substrate 10 is referred to as “up”, and an opposite side is referred to as “down”.

[0031]Further, a direction in which two positioning holes 32 and positioning pins 22 are aligned is referred to as a “left-right direction”. A direction in which a plurality of optical fibers configuring an optical fiber tape are aligned (in other words, an alignment direction of a plurality of optical fiber holes 24) is referred to as ...

second embodiment

[0062]FIG. 5 is a perspective view of an optical connector device 1 of a second embodiment as seen from below. In FIG. 5, the same configuring sections as in the first embodiment (FIG. 1) are added the same reference signs and explanation of these parts will be omitted.

[0063]An optical repeater 30 in the second embodiment includes a main body part 31′. The main body part 31′ is formed with a transparent resin that can transmit optical signals, and also in the second embodiment, coefficient of linear expansion of the main body part 31′ is greater than coefficient of linear expansion of a light guide substrate 10. Optical fiber end-faces are not exposed in an element-side end-face 31A′ of the main body part 31′, and a recess 35 and lens parts 36 are provided.

[0064]The recess 35 is a section depressed with respect to the element-side end-face 31A′, and is rectangular shaped, long, and narrow in a left-right direction so as to correspond to a plurality of optical fiber holes 34.

[0065]Th...

third embodiment

[0070]In the above described first embodiment and second embodiment, the optical repeater had been actively aligned with the light guide substrate. In a third embodiment, an optical repeater will be passively aligned with a light guide substrate.

[0071]FIG. 7 is a perspective view of an optical connector device 1 in the third embodiment as seen from above. The optical connector device 1 of the third embodiment includes a light guide substrate 10′, an optical connector 20′, and an optical repeater 30″. The same configuring sections as in the above-mentioned embodiments will be added the same reference signs and description of these parts will be omitted.

[0072]The light guide substrate 10′ in the third embodiment is formed with two positioning holes 18 (corresponds to substrate side positioning parts) so as to sandwich end parts (mirror parts) of a plurality of light guides 14 in the left-right direction. Further, two positioning holes (not shown) have been formed in a lower side end-f...

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PUM

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Abstract

An optical repeater to be arranged between a substrate and an optical connector, the optical repeater includes: a body part including a plurality of optical paths to transmit an optical signal between the substrate and the optical connector, a substrate-side end-face in which one end of each of the optical paths opposes the substrate, and a connector connecting part to connect another end of each of the optical paths to the optical connector, the body part being configured from a material with a greater coefficient of linear expansion than that of the substrate; and a reinforcing member arranged so as to surround the optical paths in a side to the substrate-side end-face, the reinforcing member being configured from a material with a smaller coefficient of linear expansion than that of the body part.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application claims priority upon Japanese Patent Application No. 2015-062345 filed on Mar. 25, 2015, which is herein incorporated by reference.BACKGROUNDTechnical Field[0002]The present invention relates to optical repeaters and optical connector devices.Related Art[0003]It has been known to position an optical connector (for example, a ferrule) that holds end parts of optical fibers and a substrate, and to optically connect optical elements on the substrate and the optical fibers. For example, in U.S. Patent Application Publication No. 2010 / 0135618, there is disclosed positioning a ferrule (reference sign 20 in U.S. Patent Application Publication No. 2010 / 0135618) and a receptacle on a substrate (reference sign 80 in the above-mentioned document) and optically connecting photoelectric conversion elements on the substrate and optical fibers.[0004]When magnitude of coefficient of linear expansion of the optical connectors and c...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G02B6/42G02B6/32G02B6/38H04B10/29G02B6/30
CPCG02B6/4267H04B10/29G02B6/30G02B6/4292G02B6/32G02B6/3882G02B6/3845G02B6/3885
Inventor NISHIMURA, AKITO
Owner FUJIKURA LTD