TW200424579A - Multi-core optical fiber cable, its terminal structure and terminal processing method - Google Patents

Abstract

The vacuum peripheral implement (10) of the planar display is provided with the followings: the rear face circuit board (11) and the front face circuit board (12), which are disposed opposite to each other; and the packaging portion (13) for packaging the same kind of peripheral part as that of front face circuit board and rear face circuit board. A strengthening portion (20) having a core material harder than the packaging portion is disposed on at least one outside of the packaging portion.

Description

200424579 (1) 发明. Description of the invention [Technical field to which the invention belongs] The present invention is a plastic optical fiber multi-core optical cable having a terminal structure of the optical fiber multi-core optical cable, the specific terminal structure, and a processing method thereof. [Prior art]

When using a fiber to communicate with multiple end devices, a fiber-optic multi-core optical cable (hereinafter referred to as a multi-core optical cable) accommodated in a single optical cable using a plurality of optical fibers. Multi-core fiber cables connected to the common main line need to be taken out (divided) to use a number of optical fibers. At this time, it is a multi-core optical cable that can be transmitted over a long distance. Because a multi-core optical cable is branched from the upper part of the building, the communication line can be distributed from the public main line to each floor.

To each of the above devices, one optical fiber or two pairs of optical fibers are usually taken out from the multi-core optical cable. Previously, in the case of a quartz fiber multi-core optical cable, since the optical cable and the optical fiber were about the same terminal, the optical fiber connecting machine was taken out from the terminal part, and it was necessary to extend the connection. Specifically, the top end portion of the optical fiber of the multi-core optical cable terminal accommodates an extension optical cable of a specified length, and the other end is connected to the machine connection connector to the other end of the extension optical fiber, and is connected and extended. Removal of the previous fiber in this way requires a splicing operation, which increases the connection loss. The connection loss is not only accompanied by an increase in connection places, but also caused by vibration and temperature fluctuations. The optical fiber in a multi-core optical cable is inserted into a groove formed in a compartment (slot), which is covered by being covered and covered by the outside -4- 200424579

If the multi-core optical cable is subjected to vibration, the optical fiber will protrude and indent from the top end of the optical cable. In addition, although there are few optical cables and optical fibers, the thermal expansion coefficients of the materials are different, and the amounts of extension are also different due to changes in the ambient temperature. As described above, convexities and depressions of the optical fiber are generated from the top of the optical cable. The optical fiber cable requires high reliability, and it is desirable not to increase the connection loss due to the above-mentioned vibration and temperature fluctuation.

Previously, the quartz fiber was used to take out the extra fiber from the multi-core fiber cable. For example, it is easy to extend the connection to the connection end machine to make the removed fiber not fully protected, and to have sufficient protection and complicate the operation. For more. That is, it is easy to use a quartz fiber which is easily broken, and protection methods such as impact are unknown. In addition, plastic optical fiber multi-core optical cables have been proposed in many cases, but there is no specific proposal for terminal processing accompanying the implementation. The current plastic optical fiber multi-core optical cable is overwhelmingly shorter than the quartz optical fiber multi-core optical cable, and most of them are used for indoor wiring on the same floor. Therefore, for example, when laying a multi-core fiber-optic cable in the building and sharing it on multiple floors, and using it in different levels, the actual problem that is actually handled by the terminal is not recognized. The purpose of the present invention is to provide a compact terminal structure that is stable against vibration and temperature fluctuations, and has low connection loss, high reliability, a plastic optical fiber multi-core optical cable with such a terminal structure, and a simple terminal processing method. [Summary of the Invention] The inventor's purpose is to review the termination of plastic optical fiber multi-core optical cables without increasing the connection loss mentioned above. As a result, in the case of plastic optical fibers, the diameter of the optical fiber itself is thick and the possibility of damage is low. Therefore, it should be noted that the optical fiber can be inserted outside the optical cable having a thicker hole than the optical fiber. That is, the inventor is "for a multi-core optical cable terminal part, the desired length of the live-line optical fiber itself" is inserted until the machine and is longer than the outer cover of the optical cable, and can be directly connected and used with a connector at the front end of the optical fiber. It needs to be connected for extension, and the method of its multi-core optical cable terminal part is selected to complete the present invention.

The present invention is characterized by providing a multi-core optical cable (A) terminal part with a plastic optical fiber housed in an outer quilt; and an optical cable (B) terminal part with an optical fiber insertion port on an outer quilt; and at least fixing each of the above The fixing plate of each part of the optical cable terminal part, and does not cut out the excess plastic optical fiber from the above multi-core optical cable (A), and insert one piece from the above-mentioned optical fiber jack of the above-mentioned optical cable (B) terminal part Tongzhi fiber multi-core cable termination structure.

A suitable form of the present invention is that, with regard to the above-mentioned terminal structure, the multi-core optical cable (A) has a plurality of grooved spacers in addition to the quilt; and a covering layer covering the spacer layer, and at least a part of the spacer layer is removed from the covering. Layer, the part of the plastic optical fiber taken out by the above length is held in the spacer layer by the elastic body, and is fixed to the multi-core optical cable. The multi-core optical cable (A) and the multi-core optical cable (B) are each provided with a conductive tensile body, and each tensile body is fixed by the fixing plate, so that each optical cable has a current ground. The plastic optical fiber is a plastic optical fiber containing a fluoropolymer composition. The present invention provides a plastic optical fiber multi-core optical cable having the above-mentioned terminal structure. -6- (4) (4) 200424579 The present invention also provides a method for processing an optical fiber multi-core optical cable for constituting the above-mentioned terminal structure, and includes a multi-core optical cable (A) terminal section from housing a plastic optical fiber to an outer cover. The project of taking out the plastic optical fiber from the excess length; and the process of removing the excess optical fiber without cutting, and making the optical fiber cable (B) from the outer end portion of the optical fiber jack through the fiber insertion holes And at least a process of fixing each part of the above-mentioned optical cable terminal part with a fixed board, which is a method for processing an optical fiber multi-core optical cable terminal. [Embodiment] Hereinafter, the terminal structure of the optical fiber multi-core optical cable of the present invention, the terminal structure of the plastic optical fiber multi-core optical cable and the terminal processing method thereof will be specifically described with reference to the drawings. Regarding the present invention, in order to take out a plastic optical fiber (hereinafter also referred to as an optical fiber) from the multi-core optical cable (A), the number of core wires of the remaining length of the optical cable (B) is suitable to be 1 or 2, that is, the number of optical fiber insertion holes is suitable. The number is one to two, but the following is a description of an example of taking out two wires from a multi-core optical cable (A) using a two-core optical cable (B). 1 to 3 are explanatory diagrams of a termination portion of the optical fiber multi-core optical cable, and FIG. 1 is a side view of the multi-core optical cable forming a tip portion. In the present invention, when carrying out the termination processing of the optical fiber multi-core optical cable, firstly, the outside of the multi-core optical cable (A) 1 containing the optical fiber 2 is covered by 6 outside the terminal portion, and two live optical fibers 2 are taken out and the remaining length is left. The outer sheath 6 of the multi-core optical fiber cable (A) 1 is provided with a spacer layer 3 having a plurality of spiral grooves 3 a and a covering layer 5 covering the same. Specifically, first, from the terminal portion of the multi-core optical cable (A) l, if the length specified by (5) (5) 200424579 to the length of the optical fiber 2 of Yu Chang is obtained, the covering layer 5 is peeled to expose the spacer layer 3, and The optical fiber (live wire) 2 is taken out from the groove 3 a of the spacer layer 3 so as to leave a surplus length. The length of the remaining length can be arbitrarily determined, but is preferably lm or more. This multi-core optical cable (A) 1 is, for example, cut off in order to divide on the halfway floor, and the communication line also includes an unconnected empty fiber, but at this time, the color is equal to each fiber, and the empty cable can be distinguished from Live line. In order to leave the optical fiber 2 long, the above-mentioned spacer layer 3 after the covering layer 5 is removed is usually cut and shortened to a suitable length. The trench 3a is formed by peeling off the vicinity of the coating layer 5 and cutting off the spacer layer 3. The conductive tensile body 4 such as steel is peeled off at a predetermined length and formed at the tip of the multi-core optical cable (A) 1. Here, as the tensile body, if the tension applied to the optical cable can be withstood, the material and size are not limited. However, it is preferable to use a metal material such as steel. Fig. 2 is a cross-sectional view of the spacer layer 3 for explaining the method of holding the extra-long-length optical fiber 2 on the exposed spacer layer 3. The remaining length of the optical fiber 2 is to insert and cover the elastic cylindrical body 7 from the distal end portion. The elastic cylindrical body 7 is slightly larger than the groove 3 a. The elastic cylindrical body 7 is pressed into the groove 3 a of the exposed spacer layer 3. The elastic cylindrical body 7 is elastically deformed by the fitting and is fixed in the groove 3 a. . The remaining optical fiber 2 is fixed in the spacer layer 3 by an elastic cylindrical body 7. With this fixed, the excess length of the optical fiber 2 becomes low due to the degree of freedom, and vibration of the excess length of the optical fiber 2 can also be suppressed. Fig. 3 is a side view of an optical cable showing an example of a type of a multi-core optical cable (A) l terminal device according to the present invention. The above-mentioned multi-core optical cable (A) 1 is formed as ‘own 200424579

The outer layer 6 of the covering layer 5 is fixed by a fixing member 8 such as a plastic wire harness and the like, and is fixed to the aluminum fixing plate 10 from which the ground wire 9 is removed. The tensile body 4 is fixed to the fixing plate 10 by a metal plate 15 and screws 16. The fixing plate 10 may be a part of a box having a covering portion (not shown). FIG. 4 is a cross-sectional view showing a quilt 111 other than the 2-core optical cable (B) 11.

The remaining length of the optical fiber 2 is: from the inside, there are two fiber insertion holes 1 12 2-core optical cable (B) l1 outside the terminal portion 1 1 1 and one by one is inserted into the fiber insertion hole 1 1 2 in. The outer cover 1 1 1 is formed from a flexible material, and is usually a molded product of a thermoplastic plastic. The remaining length of the optical fiber 2 is long, and when the insertion length of the outer cover 111 of the 2-core optical cable (B) 11 is long, it is desirable that the material of the outer cover 1 1 1 is made of a suitable material. For the material, for example, polyethylene, polyvinyl chloride, polypropylene, etc. are suitable.

The outer cover 111 is that it has two pre-formed optical fiber insertion holes 1 1 2 inside, but the optical fiber insertion hole 1 12 is, for example, an oval cross-section or a rounded rectangle, and the optical fiber insertion hole. The size of 112 is larger than that of the optical fiber 2. It is desirable to allow the optical fiber 2 to have a reserved space in the optical fiber insertion hole 1 1 2. The outer cover 1 1 1 is because the optical fiber insertion hole 1 1 2 has a reserved space, so it is easy to insert the plastic optical fiber 2. For ease of insertion, a lubricant may be applied to the surface of the optical fiber 2, and various types of lubricants may be silicone oil, and powder may be used for lubricity. In addition, the outer quilt 111 is intended to have a tensile body 12. The outer quilt is 111 and has two tensile bodies. The remaining length of the optical fiber 2 is 1 1 1 except that at least a part thereof is fixed to the fixing plate 10. At this time, the outer cover 111 may be fixed to the fixing plate by the sheath 14, and the tensile body 12 may be fixed to the fixing plate by a metal plate and screws. Usually, the top ends of the two-core optical fiber cables (B) 11 are fixed at both ends, and the connectors 13 are usually attached.

Because of the above, it is constructed to include a multi-core optical cable (A) l terminal portion 'and a two-core optical cable (B) l 1 terminal portion having two optical fiber insertion holes inside, and at least the above-mentioned optical cable terminal portions are also fixed. Part of the fixed board, and take out at least two live-wire plastic optical fibers 2 from the multi-core optical cable (A) l, and insert one of them from the terminal part of the two-core optical cable (B) ll The optical fiber multi-core optical cable termination structure that the optical fiber insertion port 112 becomes. The above is a description of a type of live-line optical fiber from which a 1-to-2 core is taken out from a 6-core optical cable, but the number of cores of a multi-core optical cable and the number of live-line light extraction are not limited. For example, if the number of cores of a multi-core optical cable It can be multiple cores with more than 1 core, such as 64, 128, and 25-6.

Fig. 5 shows an example of a form in which two to two optical fibers are taken out in Fig. 3; In FIG. 5, the same drawing number as in FIG. 3 shows that the same or equivalent parts ′ of the optical fiber 2 taken out from the multi-core optical cable (A) 1 differ in number, and the others correspond to the drawing of FIG. 3. As described above, the plastic optical fiber 2 of the present invention is not particularly limited if it is a plastic optical fiber, but the optical fiber material is preferably a composition containing a fluoropolymer. The specific polymer is 'the non-crystalline chlorine-containing polymer having no C-H bond is preferable', which is also suitable for materials containing a fluorine-containing ring structure, and more preferably, the main chain of the fluorine-containing ring structure has a fluorine-containing polymer. The fluorine-containing ring structure is preferably a fluorine-containing alicyclic ring (a cyclic ether bond may be included). Furthermore, the main chain containing this ring structure is preferably -10- (8) (8) 200424579, and it is preferable that a melt-formable substance is formed from a substantially linear structure. Among them, a fluoropolymer having a fluorinated alicyclic structure in the main chain is preferable. Examples of such a gas-containing polymer 'for example, the gas-containing polymer disclosed in JP-A-8-5848' are fluorine rubber (3-oxo-1,5-hexadiene) and fluorine rubber (3-oxo Hetero-1,6-heptadiene) is preferably a fluoropolymer containing a monovalent element guided from these inducers. Such a fluorine-containing polymer is effective as a plastic optical fiber for medium-distance communication in order to achieve excellent near-infrared transmission characteristics previously unachievable with an acrylic resin optical fiber, and can particularly effectively utilize the terminal structure of the present invention. Alas, the above is the description of the multi-core optical cable terminal part. However, if the optical fiber is made of a plastic material, the terminal of the present invention is structured to be suitable for use in a multi-core optical cable. For example, a multi-core optical fiber cable is cut off in the middle, and the optical fiber taken out from the multi-core optical cable is inserted into the optical fiber insertion hole of the 2-core optical cable (B) in the same way as the above-mentioned extra-length optical fiber, and can be fixed. Also, the base of the optical fiber taken out from the multi-core optical cable is covered with the above-mentioned elastic element cylinder, and it can be fixed to the multi-core optical cable because the spacer layer of the multi-core optical cable is embedded. (Embodiments) Next, the embodiments of the present invention will be specifically described, and the present invention is not limited to these described embodiments. (Example 1) As shown in FIGS. 1 to 3, a multi-core optical cable (A) terminal (9) was made in the following order: 200424579 The multi-core optical cable (A) l shown in FIG. 1 ′ was made of a polyethylene spacer layer. 3 Six spiral stripe grooves 3 a are formed on the surface, and the groove 3 a accommodates one optical fiber 2 formed of a fluoropolymer composition. The multi-core optical cable (A) 1 is stripped of a part of the covering layer 5 at the terminal portion, and the optical fiber 2 having a diameter of 0.5 mm is taken out from the spacer layer 3. The spacer layer 3 is cut from the vicinity of the peeling of the coating layer 5, and the tensile body is peeled off from the tip.

Next, a silicon rubber elastic cylinder 7 is inserted into the groove 3 a formed by the spacer layer 3 from the distal end portion of the optical fiber 2 and pressed together with the optical fiber 2. The elastic cylinder 7 is slightly larger than the groove 3a, and is deformed elastically by being pressed into the groove 3a, and is fixed in the groove 3a together with the optical fiber 2. As shown in FIG. 2, the covering layer 5 of the terminal portion of the multi-core optical cable (A) 1 is fixed to the aluminum terminal box fixing plate 10 by using a plastic cable tie 8. The steel tensile body 4 is fixed to the fixing plate 10 by a metal plate 15 and screws 16.

The hollow part 111 (optical fiber insertion hole 112) of the lm-chlorinated 2-core optical cable formed by the pre-molded lm is inserted into the above-mentioned optical fiber 2 and the outer cover 111 is made of 2 steel tensile bodies 1 2 The plate 17 is fixed to the fixing plate 10 by screws 18. A ground wire 9 for the device to ground on the fixed board 10. Because the plate 10 is made of aluminum for some reason, the steel tensile body 4 and the steel tensile body 12 are grounded together. Industrial application possibility Because the optical fiber multi-core optical cable terminal of the present invention is structured, the optical fiber (live wire) of the multi-core optical cable can be used (connected) in this connection (different), compared with the previous need of 倂 -12- (10) 200424579 Quartz fiber does not delay time or loss of connection. In addition, the chance of occurrence of the expansion and contraction difference of optical cables and optical fibers easily caused by splicing is not only reduced due to the omission of the previous splicing, but also a 2-core optical cable (B ) The outer quilt meets the stability of the elastic cylinder, so that it can maintain stable performance when it encounters environmental vibrations and temperature changes.

[Brief Description of the Drawings] Fig. 1 is a side view for explaining a terminal portion of an optical fiber multi-core optical cable according to the present invention. Fig. 2 is a cross-sectional view of the spacer between the exposed spacer and the maintenance state of the optical fiber. Fig. 3 is a plan view of a fixing plate showing an example of a structure for taking out two optical fiber termination structures according to the present invention.

Fig. 4 is a sectional view showing an example of a type of quilt other than the use of a 2-core optical cable according to the present invention. Fig. 5 is a plan view corresponding to Fig. 3 showing a configuration example of two optical fiber termination structures in which two pairs are taken out according to the present invention. Drawing number description 1: Multi-core optical cable (A) 2: Optical fiber 3: Spacer layer 3a: Groove-13- (11) 200424579 4: Tension body 5: Coating layer 6: Outer cover 7: Elastic cylinder 8: Fixed Part 9: Ground

1 〇: Fixing plate 1 1: 2-core optical cable (B) U 1: Outer cover 1 1 2: Fiber insertion hole 12: Tension body 1 3: 2-core connector 14: Sheath 1 5: Metal plate 1 6: Screw 1 7: Metal plate 1 8: Screw 14-

Claims (1)

(1) 200424579 Patent application scope 1. An optical fiber multi-core optical cable terminal structure, which is characterized by: having a multi-core optical cable (A) terminal part that houses plastic optical fibers inside and outside; Optical cable (B) terminal part; and at least a fixing plate that also fixes each part of the foregoing optical cable terminal part, and does not cut out the excess length of plastic optical fiber from the aforementioned multi-core optical cable (A), from the aforementioned optical cable ( B) One terminal of the aforementioned optical fiber jack is inserted. 2. The optical fiber multi-core cable termination structure described in item 1 of the scope of the patent application, wherein: the multi-core optical cable (A) has a plurality of grooved spacers in addition to the aforementioned multi-core optical cable (A); and a covering layer covering the spacer layer, the spacer At least a part of the layer is removed from the coating layer, and a part of the plastic optical fiber taken out of the foregoing length is held in a spacer layer by an elastomer and fixed to a multi-core optical cable. 3. The multi-core fiber-optic cable terminal structure described in item 1 or item 2 of the patent application scope, where: The multi-core optical cable (A) and the multi-core optical cable (B) are each provided with a conductive tensile body, and each tensile body is fixed by the fixing plate, so that each optical cable has a current ground. 4. The structure of the multi-core optical fiber cable terminal described in item 1 or 2 of the scope of the patent application, wherein: the aforementioned plastic optical fiber is a plastic optical fiber containing a fluoropolymer composition. 5. A plastic optical fiber multi-core optical cable, which is characterized by having the terminal structure described in the first to fourth items of the scope of application for patents (2) (2) 200424579. 6. A method for processing an optical fiber multi-core optical cable terminal, comprising: a project for removing the plastic optical fiber from a plastic fiber to a terminal part of the multi-core optical cable (A) for accommodating the inside and outside; and removing the excess without cutting off A long optical fiber, the project of making an optical cable (B) by inserting the outer terminal portion of the optical fiber jack through the fiber insertion holes one by one; and at least fixing each portion of the terminal portion of each of the foregoing optical cables Plate fixing works.