KR20020005298A - Boot of optical communication module housing for mounting optical fiber and mounting method using the same - Google Patents

Abstract

PURPOSE: Optical fiber fixing boots for optical communication module housings and fixing method in use with the same are provided to improve bonding performance using an adhesive which is hardened by ultraviolet rays or heats and to minimum decrease interior stresses produced by interior pressing forces. CONSTITUTION: A boot(30) is typically used as a ribbon boot as applied to a ribbon-type optical fiber, and comprises a planer upper element(32), a planer lower element(34) facing the planer upper element, and an adhesive disposed between the planer upper and lower elements. The planer upper element is formed with a space, of a resting groove(321), for mounting the optical fibers. The groove is formed corresponding to the shape of the optical fiber to be mounted. The optical fiber is arranged in a space by a groove(341) of the planer lower element and then the adhesive is filled in the groove and the upper element is covered and is subjected to an amount of heat, thereby setting the adhesive disposed between the lower and upper elements.

Description

Optical fiber fixing boot of optical communication module housing and fixing method using same {BOOT OF OPTICAL COMMUNICATION MODULE HOUSING FOR MOUNTING OPTICAL FIBER AND MOUNTING METHOD USING THE SAME}

The present invention provides optical communication using a planar lightwave circuit (PLC) device including an arrayed waveguide grating (AWG), a multiplexer / demultiplexer (MUX / DEMUX), a splitter, and the like. The present invention relates to a packaging of an optical communication module used in the present invention, and more particularly, to an optical fiber fixing boot associated with an optical communication module housing and a fixing method using the same.

Typically, the optical communication module has a configuration to withstand the tensile force applied to the pigtail by fixing the pigtail (pig tail), which is the optical fiber and the optical fiber ribbon drawn out from the optical fiber block mounted on the optical element. In the related art, a method configured to withstand the tensile force applied to the pigtail and to protect the pigtail and the coupling portion between the optical element and the optical fiber block has been mainly used.

The part responsible for this role is the "ribbon boot" part, which has been fixed to the pigtail and then to the housing again.

1 is a perspective view showing a fixing structure when the pigtail according to the first embodiment of the present invention is a ribbon optical fiber. 2 is a perspective view showing a fixing structure when the pigtail is an optical fiber according to a second embodiment of the present invention. Referring to FIG. 1, the boot 10 according to the first exemplary embodiment includes a flat upper member 12 and a flat lower member 14, and face each other between the upper and lower members 12 and 14, respectively. Viewing grooves 121 and 141 are provided. After the ribbon optical fiber is seated in the space provided by the groove 141 to align the pigtail T, the upper and lower members 12 and 14 are coupled. In this case, a method of coupling the upper and lower members 12 and 14 may be a screw or bolt, and the method of fixing the pigtail T to the boot 10 by using a coupling force using a fastener such as a screw or bolt. It was.

2 is a perspective view showing a fixing structure when the pigtail is an optical fiber. Referring to FIG. 2, the boot 20 according to the second exemplary embodiment includes a flat upper member 22 and a flat lower member 24, and grooves are formed between the flat upper and lower members 22 and 24. After the pigtail T was aligned and seated in the space provided by 221, 241, the flat upper and lower members were joined. Subsequently, the pigtail T was fixed to the boot 20 by using a coupling force using a fastener such as a screw or a bolt.

However, in this case, in order to resist the tensile force, the coupling force of the upper and lower members of the boot should be considerable, which may cause damage or optical property deterioration of the optical fiber inside the pigtail by the pressing force. On the contrary, if the compressive force is reduced to minimize the damage of the pigtail due to the compressive force, the boot lacks the force to hold the pigtail, and if a large tensile force is applied to the pigtail, it seriously damages the performance of the module.

Accordingly, an object of the present invention is to provide a boot for fixing an optical fiber of an optical communication module housing having improved bonding performance using an adhesive that is cured by ultraviolet light or heat.

Another object of the present invention is to provide an optical fiber fixing boot of an optical communication module housing that implements a packaging method of a high reliability optical communication module housing.

Still another object of the present invention is to provide an optical fiber fixing boot of an optical communication module housing which minimizes generation of internal stress caused by internal compression force.

Another object of the present invention to provide an optical fiber fixing boot of the optical communication module housing that can improve the optical communication transmission characteristics.

In order to achieve the above object, the present invention provides a boot of an optical communication module housing,

Flat top member;

A flat bottom member aligned to face the flat top member;

Ultraviolet light or heat radiated to the flat upper member; And

Located in the grooves provided to face each of the flat upper and lower members, it is composed of an adhesive that is cured by the ultraviolet light or heat to bond the flat upper and lower members in a direction facing each other.

In the present invention, the optical fiber fixing method using a boot of the optical communication module housing,

Aligning the pigtail with the groove of the flat lower member;

A second step of first filling the tail with sufficient adhesive to the groove;

A third step of covering and arranging the flat upper member made of a transparent glass material on the flat lower member; And

And a fourth step of curing the adhesive by applying the ultraviolet light or heat to the flat upper member.

1 is a perspective view showing a fixing structure when the pigtail is a ribbon optical fiber according to a first embodiment of the present invention.

2 is a front view of FIG. 1;

Figure 3 is a perspective view showing a fixing structure when the pigtail is an optical fiber according to a second embodiment of the prior art.

4 is a front view of FIG. 3.

5 is a perspective view showing a fiber fixing boot according to an embodiment of the present invention.

6A through 6C are cross-sectional views illustrating a method of fixing an optical fiber using an optical fiber fixing boot according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

5 is a perspective view showing a fixing boot 30 of the optical communication module housing according to an embodiment of the present invention. As shown in FIG. 5, the boot 30 according to the present invention will be described as an example of a boot applied to a ribbon optical fiber. However, it should be noted that the boot according to the present invention can be equally applied to the optical fiber.

The boot 30 of the optical communication module housing according to the present invention includes a flat upper member 32, a flat lower member 34 fixed to the flat upper member 32, and the flat upper and lower members ( 32, 34, consisting of an adhesive E2 which is cured by ultraviolet or heat.

Referring to the boot 30 according to the present invention in detail, the flat upper member 32 is provided with a mounting space for mounting the optical fiber or ribbon optical fiber, respectively. The mounting space consists of a groove 321. The grooves 321 and 341 provided in the flat upper and lower members 32 and 34 respectively mean a space for seating an optical fiber or a ribbon optical fiber or a space for applying an adhesive. In addition, the grooves provided in the flat upper and lower members 32 and 34 are configured to correspond to the shape of the optical fiber to be mounted.

6A through 6C are cross-sectional views illustrating a method of fixing an optical fiber using a boot of an optical communication module housing according to the present invention. As shown in FIG. 6A, the pigtail T of the optical fiber pigtail or the ribbon optical fiber is aligned in the space provided by the groove 341 provided in the flat lower member 34. Subsequently, an adhesive E1 is filled in the groove 341. Subsequently, the flat upper member 32 is covered with the flat lower member 341.

As shown in FIG. 6B, after the flat upper and lower members 32 and 34 are aligned in a facing state, ultraviolet light (UV) or heat is applied to the flat upper member 32, and accordingly, an adhesive ( Cure E1).

As shown in FIG. 6C, the applied adhesive E2 is cured, and the flat upper and lower members 32 and 34 are kept in a mutually bonded state by the bonding force of the cured adhesive E2. The boot fixes the ribbon optical fiber. Finally, by using fasteners such as screws or bolts to form a single physical assembly.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention.

As described above, the present invention implements the optical fiber fixing boot with a crimping structure by using an adhesive that is cured by ultraviolet light or heat, and thus it is possible to fix the pigtail of the optical fiber without damage. Therefore, the optical communication module packaging and the improvement of the manufacturing / production process has been achieved, it is possible to minimize the internal stress due to the long-term compression force it is possible to prevent the degradation of the optical communication transmission characteristics.

Claims (5)

In the boot of the optical communication module housing, Flat top member; A flat bottom member aligned to face the flat top member; Ultraviolet light or heat radiated to the flat upper member; And Optical fibers of the optical communication module housing, characterized in that located in the grooves provided facing each other in the flat upper and lower members, and composed of an adhesive that is cured by the ultraviolet light or heat to bond the flat upper and lower members in a direction facing each other. Fixed boot. The optical fiber fixing boot of claim 1, wherein the flat upper member is made of glass. The optical fiber fixing boot of claim 1, wherein the flat lower member is made of a transparent material. The optical fiber fixing boot of claim 3, wherein the transparent material is a glass material. In the optical fiber fixing method using a boot of the optical communication module housing, Aligning the pigtail with the groove of the flat lower member; A second step of first filling the tail with sufficient adhesive to the groove; A third step of covering and arranging the flat upper member made of a transparent glass material on the flat lower member; And And a fourth step of curing the adhesive by applying the ultraviolet light or heat to the flat upper member.