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Optical connector and method for assembling same

A technology of optical connectors and assembly methods, which is applied in the direction of instruments, optics, light guides, etc., and can solve the problems of not being able to assemble optical connectors

Active Publication Date: 2012-05-23
NIPPON TELEGRAPH & TELEPHONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of being caught on the insertion port of the ferrule 4, if the removal of the coating layer and the end surface treatment are performed here, if the pressing force necessary for the treatment is not below the insertion force, the optical fiber 1 will not be caught. Insert ferrule 4, deflected at the rear end of the connector, optical connector cannot be assembled

Method used

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  • Optical connector and method for assembling same
  • Optical connector and method for assembling same
  • Optical connector and method for assembling same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0084] Figure 1 to Figure 3 It is a figure which shows the 1st Embodiment of this invention, and the optical connector 10 shown in this figure is a member for connecting the optical fiber 1 to the other side connector.

[0085] The optical connector 10 includes a connector body 11 into which an optical fiber 1 is inserted, a ferrule 12 attached to one end of the connector body 11, a first fiber guide 13 fixed in the connector body 11, and a The second fiber guide 14 provided for the connector body 11 to move freely, the deflection restricting portion 15 that restricts the deflection of the optical fiber 1 inserted into the connector body 11, and the fixing member 16 that fixes the optical fiber 1.

[0086] The connector body 11 is inserted with, for example, an optical fiber 1 having an outer diameter of 125 μm of the bare fiber strand 1a and an outer diameter of 250 μm of the covering layer 1b, and is formed so as to be fitable with the counterpart connector.

[0087] The cuff 12 h...

no. 2 Embodiment approach

[0105] Picture 8 as well as Picture 9 This is a diagram showing the second embodiment of the present invention, and the structure of the deflection restricting portion is different from the first embodiment. In addition, components equivalent to those in the above-described embodiment are designated by the same reference numerals.

[0106] The deflection restricting portion 17 of this embodiment is composed of a pair of plate-shaped fixed guide portions 17a that guide the optical fiber 1 through a V-shaped groove, and a movable guide composed of a plurality of block-shaped members that guide the optical fiber 1 Section 17b constitutes. The fixed guide portions 17a are arranged on opposite sides with the optical fiber 1 interposed, one fixed guide portion 17a is fixed to the first fiber guide 13 and the other fixed guide portion 17a is fixed to the second fiber guide 器14. A plurality of movable guide portions 17b are respectively arranged between one fixed guide portion 17a and...

no. 3 Embodiment approach

[0109] Picture 12 as well as Figure 13 It is a figure which shows the 3rd Embodiment of this invention, and the optical connector 20 shown in this figure is a member for connecting the optical fiber 1 to the other side connector.

[0110] This optical connector 20 includes a connector body 21 into which the optical fiber 1 is inserted, a ferrule 22 attached to one end of the connector body 21, a first fiber guide 23 fixed in the connector body 21, and a The second fiber guide 24 provided for the connector body 21 to move freely, the deflection restricting portion 25 that restricts the deflection of the optical fiber 1 inserted into the connector body 21, the fixing member 26 that fixes the optical fiber 1, and The covering removal part 27 for removing the covering of the optical fiber 1 inserted into the connector main body 21 is the same as in the first embodiment. The second fiber guide 24 is provided with a deflection receiving part 24a and a cover member 24b The deflection ...

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Abstract

An optical connector having a connector main body into which an optical fiber is inserted includes a bending restriction portion formed so that the length in the insertion direction of the optical fiber is variable and used for restricting the bending of the optical fiber while becoming shorter in the insertion direction of the optical fiber when the optical fiber is inserted into the connector main body. In the bending restriction portion, the bending of the optical fiber does not occur even if an insertion margin is lengthened, so that the insertion force of the optical fiber can be made to be sufficiently large. Therefore, even when an insertion resistance increases due to the intrusion of foreign particles such as dust or the like, the optical fiber can be reliably inserted. In addition, the bending restriction portion is extremely advantageous in performing an optical fiber-end treatment using the insertion force of an optical fiber, including optical fiber sheath removal and an optical fiber end-face grinding treatment.

Description

Technical field [0001] The present invention relates to, for example, an optical connector used for connecting optical fibers for optical communication and an assembly method thereof. Background technique [0002] In the past, in order to connect optical connectors, it is most common to make optical fibers collide with each other for physical contact connection. However, in this case, the smoothness of the optical fiber end faces is important. Therefore, in the previous field-assembled optical connectors, such as Figure 41 As shown, the connector main body 2 into which the optical fiber 1 for the circuit is inserted is provided with the built-in fiber 3 whose end surface has been polished, the built-in fiber 3 is held by the ferrule 4, and the refractive index matching agent 5 is used for the wiring The optical fiber 1 and the built-in fiber 3 are connected by a mechanical joint. At this time, in order to accurately align the center of the optical fiber 1 to the center of the bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/36
CPCG02B6/3887G02B6/3846G02B6/3888Y10T29/49174
Inventor 小山良中岛和秀高谷雅昭仓岛利雄清水正利中沟恭市
Owner NIPPON TELEGRAPH & TELEPHONE CORP