CN211043732U - Conical self-coupling optical fiber adapter - Google Patents

Abstract

The utility model relates to a toper is from coupling optical fiber adapter, this optical fiber adapter are including the shell that has the inner chamber, and the both ends of shell are equipped with respectively and are used for being connected or the interface of separation with the cooperation of external parts, and the inner chamber passes through both ends interface and external intercommunication, and this optical fiber adapter is still including setting up in the shell and separate into the core of first cavity and second cavity independent each other with the inner chamber, and the toper light path passageway has been seted up to the length extending direction of inner chamber along the inside of core, first cavity and second cavity pass through the light path passageway intercommunication. The utility model discloses a fine solution of fiber adapter in present fiber communication or the optical fiber sensing field, the coupling connection problem between single mode fiber and the multimode fiber, and the transmission loss problem between greatly reduced single mode fiber and the multimode fiber.

Description

Conical self-coupling optical fiber adapter

Technical Field

The utility model belongs to the technical field of the photoelectricity, concretely relates to toper is from coupling optical fiber adapter.

Background

In recent years, with the rapid development of optical fiber communication and optical fiber sensing, various optical devices have emerged. The device-to-device or the device-to-fiber connection often needs to be connected through a fiber adapter, otherwise, the connection is realized in a fiber fusion welding mode, but the fusion welding mode is not suitable for some situations, so the problem of fiber connection is solved excellently through the use of the fiber adapter.

At present, the relatively common fiber adapter in the market requires that the fiber core diameters of the optical fibers at the left end and the right end are consistent, for example, the coupling efficiency is higher for a single-mode fiber and a multimode fiber for a multimode fiber. However, in the case where a single-mode fiber is connected to a multimode fiber, the optical path coupling effect is deteriorated due to the mismatch of the fiber cores.

Disclosure of Invention

The utility model aims to solve the technical problem that a toper is from coupling optical fiber adapter is provided.

For solving the technical problem, the utility model discloses a following technical scheme:

the utility model provides an optical fiber adapter, is including the shell that has the inner chamber, the both ends of shell are equipped with the interface that is used for being connected with the external part cooperation or separation respectively, the inner chamber passes through both ends interface and external intercommunication, optical fiber adapter is still including setting up in the shell and will the core of first cavity and second cavity independent each other is separated into to the inner chamber, the inside of core is followed toper light path passageway has been seted up to the length extending direction of inner chamber, first cavity and second cavity pass through light path passageway intercommunication.

In a further embodiment, the diameters of the two ports of the optical path channel are respectively 9 ± 1 micron and 50 ± 1 micron.

In a further embodiment, the core is made of ceramic.

In a further embodiment, the interface is a FC-type fiber optic interface.

In further embodiments, the foreign component is a single mode optical fiber or a multimode optical fiber.

In a further embodiment, the joints of the single-mode optical fiber and the multi-mode optical fiber are FC/PC type optical fiber joints respectively.

In a further embodiment, the core is fixed inside the shell by gluing.

In a further embodiment, the outer shell is composed of a first cylindrical shell with a first cavity and a second cylindrical shell with a second cavity, which are symmetrically arranged, one end of the first cylindrical shell and one end of the second cylindrical shell are butted, so that one part of the core is located in the first cavity, the other part of the core is located in the second cavity, the first cavity and the second cavity are communicated through the optical path, and the other end of the first cylindrical shell and the other end of the second cylindrical shell are respectively provided with the interface.

Preferably, the fiber optic adapter further comprises a fastener for relatively securing the first and second cylindrical housings.

In some embodiments, the fastener is a screw.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses a fine solution of fiber adapter in present fiber communication or the optical fiber sensing field, the coupling connection problem between single mode fiber and the multimode fiber, and the transmission loss problem between greatly reduced single mode fiber and the multimode fiber.

The utility model discloses an optical fiber adapter simple structure uses portably.

Drawings

Fig. 1 is a schematic cross-sectional structural diagram of an optical fiber adapter according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a fiber adapter according to an embodiment of the present invention for connection between a single-mode fiber and a multi-mode fiber;

in the figure: 1. a fiber optic adapter; 1a, a shell; 1b, a core body; 1c, an interface; 1d, an optical path channel; 2. a multimode optical fiber; 2a, a multimode optical fiber joint; 3. a single mode optical fiber; 3a, a single-mode optical fiber joint; m, a first cavity; n, a second cavity.

Detailed Description

The invention is further described below with reference to the drawings in the specification:

as shown in fig. 1, the optical fiber adapter 1 includes a housing 1a having an inner cavity, two ends of the housing 1a are respectively provided with an interface 1c for being connected or separated with an external component in a matching manner, the inner cavity is communicated with the outside through the interfaces 1c at the two ends, the optical fiber adapter 1 further includes a core body 1b which is arranged in the housing 1a and divides the inner cavity into a first cavity m and a second cavity n which are independent of each other, a tapered optical path channel 1d is arranged in the core body 1b along the length extending direction of the inner cavity, and the first cavity m is communicated with the second cavity n through the optical path channel 1 d.

In this example, the diameters of the two ports of the optical path channel 1d are respectively 9 ± 1 micron and 50 ± 1 micron, so as to respectively match the fiber core of the single mode fiber and the fiber core of the multimode fiber. Therefore, the external component is generally a single-mode optical fiber and a multi-mode optical fiber, the interface 1c on the housing 1a is configured as an FC type optical fiber interface, and the joints of the single-mode optical fiber and the multi-mode optical fiber are FC/PC type optical fiber joints respectively.

In this example, the core 1b is fixed inside the outer shell 1a by adhesive bonding.

Specifically, when the optical fiber adapter 1 is prepared, the first step: the cylindrical shell with FC type interfaces at two ends can be designed, and the cylindrical shell is divided into two symmetrical cylindrical shells which are a first cylindrical shell with a first cavity and a second cylindrical shell with a second cavity respectively; designing a ceramic core body with a conical channel inside, wherein the diameters of two ports of the conical channel are respectively 9 +/-1 micrometer and 50 +/-1 micrometer; step three: and inserting the core body into the first cylindrical shell and the second cylindrical shell and bonding the core body by using glue, so that the first cavity and the second cavity are communicated through the tapered channel. The first cylindrical shell and the second cylindrical shell can be fastened through screws.

The optical fiber adapter 1 can butt joint a single-mode optical fiber and a multimode optical fiber without influencing the coupling problem between the two optical fibers, and the optical path channel inside the conical ceramic ferrule inside the optical fiber adapter is processed into a conical shape so as to meet the requirement that each end of the optical fiber adapter is matched with an inserted optical fiber core, thereby achieving the connecting effect between the single-mode optical fiber and the multimode optical fiber.

The specific working principle of the fiber adapter 1 is as follows: in the field of optical fiber communication or optical fiber sensing, the single-mode optical fiber 3 and the multimode optical fiber 2 are respectively and correspondingly inserted into two ends of the optical fiber adapter 1, attention is paid to the fact that the two ports are not wrongly inserted, the single-mode optical fiber 3 corresponds to a circular port of 9 +/-1 microns, and the multimode optical fiber 2 corresponds to a circular port of 50 +/-1 microns. As the single-mode optical fiber 3 corresponds to the 9 +/-1 micron circular port and the multimode optical fiber 2 corresponds to the 50 +/-1 micron port, the two ends both meet the condition of core diameter matching, thereby solving the problem of transmission loss between the single-mode optical fiber 3 and the multimode optical fiber 2.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides an optical fiber adapter, is including the shell that has the inner chamber, the both ends of shell are equipped with respectively and are used for being connected or the interface of separation with external part cooperation, the inner chamber passes through both ends interface and external intercommunication, its characterized in that: the optical fiber adapter further comprises a core body which is arranged in the shell and divides the inner cavity into a first cavity and a second cavity which are independent of each other, a tapered light path channel is arranged in the core body along the length extending direction of the inner cavity, and the first cavity and the second cavity are communicated through the light path channel.

2. The fiber optic adapter of claim 1, wherein: the diameters of two ports of the optical path channel are respectively 9 +/-1 micron and 50 +/-1 micron.

3. The fiber optic adapter of claim 1, wherein: the core body is made of ceramic.

4. The fiber optic adapter of claim 1, wherein: the interface is an FC type optical fiber interface.

5. The fiber optic adapter of claim 1, wherein: the external part is a single mode fiber and a multimode fiber.

6. The fiber optic adapter of claim 5, wherein: the joints of the single-mode optical fiber and the multi-mode optical fiber are FC/PC type optical fiber joints respectively.

7. The fiber optic adapter of claim 1, wherein: the core is fixed inside the shell through gluing.

8. An adaptor according to any one of claims 1 to 7, wherein: the shell is composed of a first cylindrical shell body with a first cavity and a second cylindrical shell body with a second cavity, the first cylindrical shell body and the second cylindrical shell body are symmetrically arranged, one end of the first cylindrical shell body is in butt joint with one end of the second cylindrical shell body, so that one part of the core body is located in the first cavity, the other part of the core body is located in the second cavity, the first cavity and the second cavity are communicated through the light path channel, and the other end of the first cylindrical shell body and the other end of the second cylindrical shell body are respectively provided with the interface.

9. The fiber optic adapter of claim 8, wherein: the fiber optic adapter also includes a fastener for relatively securing the first cylindrical housing and the second cylindrical housing.

10. The fiber optic adapter of claim 9, wherein: the fastener is a screw.

Images