Optical fiber cable wiring retention structure and optical communication device

Abstract

To provide a wiring holding structure of an optical fiber cable capable of appropriately maintaining within a device an extra length to a connection destination of an optical fiber cable while maintaining a radius equal to or larger than an allowable bending radius of the optical fiber cable, and also provide an optical communication device.SOLUTION: A wiring holding structure of an optical fiber cable includes: a housing tray 10 configured to house and hold an optical fiber cable 5; and guide parts (20, 30) attached to the housing tray 10 and configured to engage with and hold the optical fiber cable 5. The housing tray 10 is configured to route and hold the optical fiber cable 5 while maintaining a radius equal to or larger than an allowable bending radius of the optical fiber cable 5. The guide parts (20, 30) are configured to route and hold the optical fiber cable 5 by a common guide part 20 and a selection guide part 30 selected from a plurality of selection guide part 30.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a wiring holding structure for an optical fiber cable, and an optical communication device using the wiring holding structure for an optical fiber cable. [Background technology]

[0002] Conventionally, a structure for handling slack of an optical fiber cable has been disclosed that can improve the efficiency of winding up the slack of the optical fiber cable and can hold the slack of the wound optical fiber cable (see, for example, Patent Document 1). In this structure for handling slack, a tray arranged on a printed circuit board is provided with opposing walls for guiding and storing the slack of the optical fiber cable. After the slack is wound up, the tip of the pressing holder is locked with a locking portion to hold the optical fiber cable.

[0003] Also, an optical terminal device has been disclosed that allows slack of optical fiber cable of various lengths to be stored in a slack storage tray (see, for example, Patent Document 2). This optical terminal device is formed by first to fourth guide sections and an outer guide section that are erected from the bottom surface of the slack storage tray, around which slack of optical fiber cable can be stored by winding it. These multiple guide sections form two cylindrical first and third winding sections that do not intersect with each other, and a cylindrical second winding section that intersects with both of these two winding sections. It is said that various winding section configurations can be formed by utilizing the first to third winding sections. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2003-322726 A [Patent Document 2] JP 2015-121721 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the optical fiber cable slack processing structure of Patent Document 1 has a problem that it is difficult to store multiple wirings laid out three-dimensionally in the housing because the slack is stored by the optical fiber guiding outer wall and the clamp provided on the printed circuit board. Also, the optical terminal device of Patent Document 2 has a problem that when storing the optical fiber cables in the multiple guide sections formed in the slack storage tray prepared outside the main body, it is difficult to fix the optical fiber cables if there are many optical fiber cables to be wired, and depending on the variation in the optical fiber cable length, the optical fiber cables may not fit into the circular guide, and the length may be insufficient, or the wiring may be too long and float up.

[0006] Therefore, an object of the present invention is to provide an optical fiber cable wiring retention structure and an optical communication device that can properly retain the excess length of the optical fiber cable to its connection destination within the device while maintaining a bending radius greater than or equal to the allowable bending radius of the optical fiber cable. [Means for solving the problem]

[0007] [1] In order to achieve the above object, the present invention provides An optical fiber cable, The optical fiber cable is arranged in a first direction and has a radius equal to or larger than the allowable bending radius of the optical fiber cable. The optical fiber cable is arranged in a first direction and has a radius equal to or larger than the allowable bending radius of the optical fiber cable. Yen At least three common guide portions are arranged in the first Yen A plurality of second electrodes sequentially shifted in a predetermined direction Yen and the first Yen and a plurality of selection guide sections, at least one of which is disposed on each of the first and second optical fiber cables. Expansion and the second In yenThe present invention provides a wiring and holding structure for an optical fiber cable, in which the optical fiber cable is wired and held by the corresponding common guide portion and a selective guide portion selected from the plurality of selective guide portions. [2] The optical fiber cable may be wired and held by the common guide portion and the selected one or more selected guide portions. [3] Furthermore, the common guide portion and the selected one or more selected guide portions may be capable of wiring and holding optical fiber cables having different slack lengths. [4] The first direction Yen The optical fiber cable is pulled into the first Yen on the predetermined direction side or on the second Yen via the first Yen in a second direction. [5] Any of the second types of Yen The optical fiber cable is pulled into the first Yen via the predetermined direction side of the first Yen in the second direction. [6] The storage tray may have a layered structure in which the required number of stages are stacked, and the multiple fiber cables with different excess lengths may be wired and held in each stage. [7] The present invention provides a wiring holding structure for an optical fiber cable according to any one of [1] to [6] above, which inputs or outputs an optical signal transmitted by the optical fiber cable. Optical wavelength division multiplexing communication equipment (WDM circuit equipment) The present invention provides an optical communication device comprising: [8] Also, Optical wavelength multiplexing communication device Multiple WDM circuit It may be equipped with modules. Effect of the Invention

[0008] According to the present invention, the slack length of the optical fiber cable to the connection destination can be appropriately maintained within the device while maintaining a bending radius equal to or greater than the allowable bending radius of the optical fiber cable. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1(a) is an overall top plan view illustrating an example of an optical fiber cable wiring holding structure according to an embodiment of the present invention and an optical communication device using the optical fiber cable wiring holding structure, and FIG. 1(b) is a three-dimensional oblique view of a portion showing the optical fiber cable wiring holding structure. [Diagram 2] Fig. 2(a) is a top plan view of the storage tray, and Fig. 2(b) is a cross-sectional view taken along line A of Fig. 2(a). Note that Fig. 2(a) illustrates the arrangement of the common guide section and the selection guide section in order to show an example of wiring and holding of optical fiber cables, and does not illustrate the optical connector, optical adapter, and WDM circuit device. [Diagram 3] 3(a) to 3(d) are top plan views of the storage tray showing examples of different storage configurations for holding the wiring of optical fiber cables in the storage tray according to the first embodiment of the present invention. [Figure 4] FIG. 4(a) is a three-dimensional oblique view showing a stacked structure in which storage trays are stacked in multiple stages in an optical fiber cable wiring holding structure and an optical communication device using the optical fiber cable wiring holding structure in a second embodiment of the present invention, and FIG. 4(b) is an exploded oblique view of FIG. 4(a) showing each storage tray disassembled into upper and lower parts. [Diagram 5] Fig. 5 shows a storage tray according to a third embodiment of the present invention, Fig. 5(a) is a top plan view of the storage tray, and Fig. 5(b) is a cross-sectional view taken along line B-B of Fig. 5(a). Note that Fig. 5(a) illustrates the arrangement of the common guide section and the selection guide section in order to show an example of wiring and holding of optical fiber cables, and does not illustrate the optical connector, optical adapter, and WDM circuit device. [Figure 6] 6(a) to 6(d) are top plan views of a storage tray according to a third embodiment of the present invention, showing examples of different storage configurations for holding optical fiber cables. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (First embodiment) DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wiring holding structure for an optical fiber cable according to a first embodiment of the present invention and an optical communication device using the wiring holding structure for an optical fiber cable will be described below with reference to FIGS.

[0011] The optical fiber cable wiring holding structure according to the first embodiment of the present invention and the optical communication device using the optical fiber cable wiring holding structure relate to a wiring structure of an optical fiber cable inside the optical communication device. When wiring an optical fiber cable, it is necessary to avoid sharp bending because exceeding the allowable bending radius will cause damage or disconnection. In addition, when the length of the optical fiber cable cannot be selected arbitrarily, it is necessary to appropriately hold the extra length to the connection destination inside the device. However, due to the miniaturization of the device, the space for holding the optical fiber cable is reduced, and when holding multiple optical fiber cables at the same time, the optical fiber cable lengths are different, making it difficult to wire them along the same route. The embodiment of the present invention provides a means for solving these issues and problems.

[0012] The optical fiber cable wiring and holding structure of the embodiment of the present invention comprises a storage tray 10 that stores and holds an optical fiber cable 5, and guide portions (20, 30) that are attached to the storage tray 10 and engage and hold the optical fiber cable 5, and the storage tray 10 wires and holds the optical fiber cable 5 while maintaining a radius equal to or greater than the allowable bending radius of the optical fiber cable 5, and the guide portions (20, 30) are configured to wire and hold the optical fiber cable 5 using a common guide portion 20 and a selection guide portion 30 selected from a plurality of selection guide portions 30.

[0013] Wiring generally refers to a conductor for transmitting signals, information, or electricity (power, electrical signals), an optical fiber cable for transmitting optical signals, or the like, or to constructing a circuit (electrical circuit, electronic circuit, etc.) using such. In this embodiment, wiring refers to arranging an optical fiber cable in a predetermined shape and at a predetermined position, or connecting the end of an optical fiber cable to a predetermined device.

[0014] (optical fiber cable) As shown in Figs. 1(a) and 1(b), an input line 7 is drawn from the outside of the optical communication device 100 into the inside of the housing 90 via a connector unit 41. The input line 7 is a cable in which an optical signal and an electrical signal are combined into one, and the electrical signal is input to the optical-electrical signal converter 110 as an electrical signal line 8. The optical signal is input to the WDM circuit device 45 by connecting the optical fiber cable 6B to the input terminal unit 45a of the WDM circuit device 45 via an optical connector 42, an optical adapter 43, and an optical connector 44 as an optical fiber cable 6A. The WDM circuit device 45 also includes output terminal units 45b and 45c, and a plurality of optical fiber cables 5 (5A, 5B, 5C, and 5D) are output from the output terminal units 45b and 45c. The four optical fiber cables shown in Fig. 1(b) are an example of a plurality of optical fiber cables. The optical fiber cable output from the WDM circuit device 45 can be one or any number of optical fiber cables (two or more).

[0015] Here, the WDM circuit device 45 is an optical wavelength division multiplexing communication device (WDM circuit device) for performing optical wavelength division multiplexing communication, which is a high-speed and large-capacity information communication means by simultaneously carrying optical signals of multiple different wavelengths on one optical fiber cable. The WDM circuit device 45 depends on the transmission characteristics of the optical fiber cable used, and for example, in the case of a single mode optical fiber, it can multiplex and transmit and receive optical signals of wavelength bands of 20 nm intervals in the wavelength band of 1470 nm to 1610 nm, as an example.

[0016] In the case shown in Figures 1(a) and (b), the WDM circuit device 45 receives, for example, an optical wavelength-multiplexed optical signal from an external device via an optical fiber cable 6B, separates it into optical signals of, for example, four wavelength bands, and then outputs the optical signals of each wavelength band to each of the optical fiber cables 5A, 5B, 5C, and 5D via output terminal units 45b and 45c.

[0017] Each of the optical fiber cables 5A, 5B, 5C, and 5D is input as an optical signal to the optical-electrical signal converter 110 via each optical connector 48. The optical-electrical signal converter 110 can convert the input optical signal of each wavelength band into an electrical signal for each wavelength band.

[0018] The WDM circuit device 45 and the optical-electrical signal converter 110 are modularized for each wavelength band that can be converted, and since signal processing is performed in the required wavelength band, it is possible to combine WDM circuit modules of the required wavelength band and mount them in the housing 90. Correspondingly, it is also possible to increase the number of wavelength bands output from the WDM circuit device 45. Therefore, the number of optical fiber cables 5 connected from the WDM circuit device 45 to the optical-electrical signal converter 110 increases in accordance with the number of wavelength bands, and therefore wiring and holding of the optical fiber cables 5 by the storage tray 10, which will be described later, becomes important.

[0019] As mentioned above, when laying optical fiber cables, sharp bends must be avoided because exceeding the allowable bending radius can cause damage or disconnection. The allowable bending radius is also defined as the limit bending radius at which there is almost no increase in transmission loss or a decrease in communication reliability. The allowable bending radius is defined by the diameter of the optical fiber cable (core diameter, cladding diameter) and whether it is single mode or multimode, and as an example, the minimum bending radius is 30 mm.

[0020] As a first embodiment, as shown in Figs. 1(a) and (b), one storage tray 10 is mounted in a housing 90. The storage tray 10 can be formed from a plate material such as an aluminum plate, an iron-based metal plate, or an epoxy electric board. In this embodiment, as shown in Figs. 1(a), (b) and 2(a) and (b), the storage tray 10 is prepared by forming ribs on an aluminum plate by bending and forming holes by pressing, and is fixed to the bottom surface 91 of the housing 90 at four points by spacers 51 for use. The housing 90 is covered with a cover, and the optical communication device 100 is surrounded by a metal housing, but the cover is not shown in the figures in this embodiment.

[0021] 2(a) and (b), the storage tray 10 has clamp holes 12 for mounting clamp members serving as guide parts (common guide part 20, selection guide part 30) formed as through holes at required locations. The clamp holes 12 are formed as through holes at locations where clamp members are to be mounted, but more holes than necessary may be formed as a reserve in order to enable the number of guide parts (common guide part 20, selection guide part 30) to be increased later.

[0022] In the first embodiment, as shown in Figures 2(a) and (b), three clamp holes 12 for attaching clamp members serving as common guide portions 20 and five clamp holes 12 for attaching clamp members serving as selection guide portions 30 are formed, and common guide portions 20 (20A, 20B, 20C) and selection guide portions 30 (30A, 30B, 30C, 30D, 30E) serving as clamp members are attached and fixed in the respective clamp holes.

[0023] Any number of common guide sections 20 can be set, but it is preferable that the number is at least three. This makes it easy to store the optical fiber cable 5 in an arc shape and hold it in a state where the radius is maintained at or above the allowable bending radius of the optical fiber cable 5 by combining the common guide sections 20 (20A, 20B, 20C) with a selection guide section 30 selected from the selection guide sections 30 (30A, 30B, 30C, 30D, 30E).

[0024] The common guide section 20 and the selection guide section 30 are formed in a clamp shape having elasticity of resin or the like. As shown in Fig. 2(b), for example, the common guide section 20 has a hook-shaped resin piece section 20a and a hook-shaped resin piece section 20b arranged facing each other at approximately the center, and the resin piece sections 20a and 20b are integrally molded in a state where they are connected at the lower part to an insertion shaft section 20c into the clamp hole 12. These clamp members are integrally molded, for example, from nylon-based resin or the like, and various types corresponding to the wire diameter of the wire material to be clamped are commercially available, and these can be appropriately selected and used.

[0025] The selection guide section 30 is similar to the common guide section 20 and can use the same clamp members as the common guide section 20, but a different clamp member may be used depending on the number of lines (optical fiber cables) to be clamped.

[0026] The optical fiber cable 5 to be clamped can be easily inserted into the clamp members from above in the common guide section 20 and the selection guide section 30. The optical fiber cable 5 inserted into the clamp members will not easily fall out of the common guide section 20 and the selection guide section 30, but can be removed from the clamp members as necessary.

[0027] The storage tray 10 may not be an independent component, but may be configured as a part of the housing 90 and integrated with the housing 90. In this case, the common guide section 20 and the selection guide section 30 may be configured by forming the clamp holes described above in the bottom surface 91 of the housing 90 shown in Figures 1(a) and 1(b) and directly attaching the clamp members to the housing 90.

[0028] 3(a) to 3(d) are top plan views of a storage tray showing examples of different storage configurations for holding the wiring of optical fiber cables in the storage tray according to the first embodiment of the present invention. Note that, since adjustment of the slack length of the optical fiber cable 5 output from the WDM circuit device 45 is explained in Fig. 3(a) to 3(d), optical fiber cables 6A, 6B, etc. are not shown.

[0029] FIG. 3(a) shows an example of optical fiber cable wiring and holding in which three common guide sections 20A, 20B, and 20C are used as the common guide section 20, and a selective guide section 30A is selected from the selective guide sections 30 and used.

[0030] As shown in FIG. 3(a), the optical fiber cables 5A and 5B outputting the optical signals divided into predetermined optical wavelength bands by the WDM circuit device 45 are outputted via the output terminal portion 45b, and are connected to, for example, a common guide Part 2 The optical signals are clamped in the order of 0B, 20C, selection guide portion 30A, common guide portions 20A and 20B, and are input to the optical-electrical signal converter 110.

[0031] In the above example, the optical fiber cables 5A and 5B are connected in a common guide. Part 2 The optical fiber cables 5A and 5B are wired and held in the order of 0B, 20C, the selection guide portion 30A, and the common guide portions 20A and 20B while absorbing the excess length and maintaining a radius equal to or larger than the allowable bending radius. Part 2 It is also possible to wind the guide wire several times in the order of 0B, 20C, the selection guide portion 30A, the common guide portion 20A, and 20B, thereby absorbing the excess length.

[0032] Although the optical fiber cables 5C and 5D are not shown in Fig. 3(a), as shown in Fig. 1(a), they can be routed at a distance above and below, and the slack can be absorbed in the same way as the optical fiber cables 5A and 5B. Also, as shown in a third embodiment described later, the optical fiber cables 5C and 5D can absorb the slack through a route different from that of the optical fiber cables 5A and 5B.

[0033] FIG. 3(b) shows an example of optical fiber cable wiring and holding in which three common guide sections 20A, 20B, and 20C are used as the common guide section 20, and a selective guide section 30B is selected from the selective guide sections 30 and used.

[0034] As shown in FIG. 3B, the optical fiber cables 5A and 5B outputting the optical signals divided into predetermined optical wavelength bands by the WDM circuit device 45 are outputted via the output terminal portion 45b, and are connected to, for example, a common guide Part 2 The optical signals are clamped in the order of 0B, 20C, selection guide portion 30B, common guide portions 20A and 20B, and input to the optical-electrical signal converter 110.

[0035] In the above example, the optical fiber cable 5 is connected to a common guide Part 2 The optical fiber cable 5 is wired and held in the order of 0B, 20C, the selection guide portion 30B, the common guide portion 20A, and 20B while absorbing the excess length and maintaining a radius equal to or larger than the allowable bending radius. Part 2 It is also possible to wind the guide wire several times in the order of 0B, 20C, the selection guide portion 30B, the common guide portions 20A and 20B, thereby absorbing the excess length.

[0036] FIG. 3(c) shows an example of optical fiber cable wiring and holding in which three common guide sections 20A, 20B, and 20C are used as the common guide section 20, and a selective guide section 30C is selected from the selective guide sections 30 and used.

[0037] As shown in FIG. 3(c), the optical fiber cables 5A and 5B outputting the optical signals divided into predetermined optical wavelength bands by the WDM circuit device 45 are outputted via the output terminal portion 45b, and are then fed to, for example, a common guide Part 2 The optical signals are clamped in the order of 0B, 20C, selection guide portion 30C, common guide portions 20A and 20B, and input to the optical-electrical signal converter 110.

[0038] In the above example, the optical fiber cable 5 is connected to a common guide Part 2 The optical fiber cable 5 is wired and held in the order of 0B, 20C, the selection guide portion 30C, the common guide portion 20A, and 20B while absorbing the excess length and maintaining a radius equal to or larger than the allowable bending radius. Part 2 The guide wire 0B, 20C, the selection guide portion 30C, the common guide portions 20A and 20B may be wound multiple times in this order, thereby absorbing the excess length.

[0039] FIG. 3(d) shows an example of optical fiber cable wiring and holding in which three common guide sections 20A, 20B, and 20C are used as the common guide section 20, and selective guide sections 30A and 30C are selected from the selective guide section 30 and used.

[0040] As shown in FIG. 3(d), the optical fiber cables 5A and 5B outputting the optical signals divided into predetermined optical wavelength bands by the WDM circuit device 45 are outputted via the output terminal portion 45b, and are then fed to, for example, a common guide. Part 2 The optical signals are clamped in the order of 0B, 20C, selection guide portion 30A, common guide portions 20A, 20B, 20C, selection guide portion 30D, and common guide portions 20A and 20B, and input to the optical-electrical signal converter 110.

[0041] In the above example, the optical fiber cable 5 is connected to a common guide Part 2 The optical fiber cable 5 is wired and held in the order of 0B, 20C, selection guide portion 30A, common guide portions 20A, 20B, 20C, selection guide portion 30D, and common guide portions 20A and 20B while absorbing the excess length and maintaining a radius equal to or greater than the allowable bending radius. Part 20B, 20C, the selection guide portion 30A, the common guide portion 20A, 20B, and the common guide Part 2 The wire may be wound multiple times between the selection guide portion 30B, 20C, the selection guide portion 30D, and the common guide portions 20A and 20B, thereby absorbing the excess length.

[0042] In the above Figures 3(a) to (d), different storage forms for holding the wiring of the optical fiber cable in the embodiment of the present invention are illustrated, but various wiring paths can be created by combining the common guide portions 20A, 20B, and 20C and the selective guide portions 30A, 30B, 30C, and 30D.

[0043] The wiring length resulting from each combination of the above-mentioned common guide section 20 and the selective guide section 30 can be grasped at the design stage. Therefore, by setting the length of the optical fiber cable 5 to be used and specifying the extra length, it is possible to easily set the combination of the common guide section 20 and the selective guide section 30 to be used, and the wiring path of the optical fiber cable 5. This makes it possible to easily perform the wiring process of the optical fiber cable 5 inside the optical communication device 100 and the assembly work of the optical communication device 100.

[0044] (Second embodiment) FIG. 4(a) is a three-dimensional oblique view showing a stacked structure in which storage trays are stacked in multiple stages in an optical fiber cable wiring holding structure and an optical communication device using the optical fiber cable wiring holding structure in a second embodiment of the present invention, and FIG. 4(b) is an exploded oblique view of FIG. 4(a) showing each storage tray disassembled into upper and lower parts.

[0045] In the first embodiment, the storage tray is described as having one tier, but in the second embodiment, the storage tray is described as having multiple tiers. The storage tray can be configured as a stacked structure with the required number of tiers, and multiple fiber cables with different excess lengths can be wired and held in each tier. In the second embodiment, the storage tray is described as having three tiers.

[0046] 4(a) and (b), the storage tray 10 has a layered structure in which storage trays 10A, 10B, and 10C are stacked on top of each other. In each of the storage trays 10A, 10B, and 10C, the common guide portion 20 and the selection guide portion 30 have the same shape and arrangement as in the first embodiment, but the shape and arrangement of the common guide portion 20 and the selection guide portion 30 may be changed for each storage tray.

[0047] Storage tray 10A and storage tray 10B are connected by a spacer 51, and storage tray 10B and storage tray 10C are also connected by a spacer 51. In this manner, the storage trays 10 can be connected via spacers 51 to form a stacked structure in the required number of stages.

[0048] The WDM circuit device 45 and the optical-electrical signal converter 110 are combined and mounted in the housing 90 as a WDM circuit module of a required wavelength band, so the number of optical fiber cables 5 may increase in accordance with the number of wavelength bands. Even if the number of optical fiber cables 5 increases due to the addition of WDM circuit modules, the storage trays 10 can be linked to form a stacked structure by the required number of stages, making it easy to wire and hold the optical fiber cables 5.

[0049] (Third embodiment) Fig. 5 shows a storage tray according to a third embodiment of the present invention, Fig. 5(a) is a top plan view of the storage tray, and Fig. 5(b) is a cross-sectional view taken along line B-B of Fig. 5(a). Note that Fig. 5(a) illustrates the arrangement of the common guide section and the selection guide section in order to show an example of wiring and holding of optical fiber cables, and does not illustrate the optical connector, optical adapter, and WDM circuit device.

[0050] When the storage path of the optical fiber cables 5 (5A, 5B, 5C, 5D) is oval or has a long straight section, the optical fiber cables 5 (5A, 5B, 5C, 5D) tend to bulge outward. To solve this problem, the third embodiment is configured such that, in addition to the common guide section 20 (20A, 20B, 20C) in the first embodiment, a common guide section 20 (20D, 20E) is also added to the selection guide section 30 side.

[0051] 6(a) to 6(d) are top plan views of a storage tray according to a third embodiment of the present invention, showing examples of different storage configurations for holding optical fiber cables.

[0052] FIG. 6(a) shows an example of wiring holding for optical fiber cables 5A and 5B in which four common guide sections 20A, 20B, 20C, and 20E are used as the common guide section 20, and a selection guide section 30A is selected from the selection guide sections 30 and used.

[0053] As shown in FIG. 6(a), the optical fiber cables 5A and 5B outputting the optical signals divided into predetermined optical wavelength bands by the WDM circuit device 45 are outputted via the output terminal portion 45b, and are connected to, for example, a common guide Part 2 The optical signals are clamped in the order of 0B, 20C, selection guide portion 30A, common guide portions 20A and 20B, and are input to the optical-electrical signal converter 110.

[0054] In the above example, the optical fiber cables 5A and 5B are connected in a common guide. Part 2 The optical fiber cables 5A and 5B are wired and held in the order of 0B, 20C, the selection guide portion 30A, and the common guide portions 20A and 20B while absorbing the excess length and maintaining a radius equal to or larger than the allowable bending radius. Part 2 It is also possible to wind the guide wire several times in the order of 0B, 20C, the selection guide portion 30A, the common guide portion 20A, and 20B, thereby absorbing the excess length.

[0055] FIG. 6(b) shows an example of wiring and holding of optical fiber cables 5A and 5B in which five common guide sections 20A, 20B, 20C, 20D, and 20E are used as the common guide section 20, and a selection guide section 30E is selected from the selection guide sections 30 and used.

[0056] As shown in FIG. 6B, the optical fiber cables 5A and 5B outputting the optical signals divided into predetermined optical wavelength bands by the WDM circuit device 45 are outputted via the output terminal portion 45b, and are connected to, for example, a common guide Part 2 The optical signals are clamped in the order of 0B, 20C, 20D, selection guide portion 30E, common guide portion 20E, 20A, and 20B, and are input to the optical-electrical signal converter 110.

[0057] In the above example, the optical fiber cables 5A and 5B are wired and held in the order of the common guide parts 20B, 20C, 20D, the selection guide part 30E, the common guide parts 20E, 20A, and 20B while absorbing the excess length, maintaining a radius equal to or greater than the allowable bending radius, and suppressing outward bulging in the long straight portion. Note that the optical fiber cables 5A and 5B may be wound multiple times in the order of the common guide parts 20B, 20C, 20D, the selection guide part 30E, the common guide parts 20E, 20A, and 20B, thereby absorbing the excess length.

[0058] FIG. 6(c) shows four common guide parts 20A, 20B, 20D, and 20E as the common guide part 20, and a selection guide part 30 to a selection guide part 30A , 30E are selected and used to hold the wiring of optical fiber cables 5C and 5D.

[0059] As shown in FIG. 6C, the optical fiber cables 5C and 5D outputting the optical signals divided into predetermined optical wavelength bands by the WDM circuit device 45 are outputted via the output terminal portion 45c, and are connected to, for example, the selection guide portion 30E, the common guide portion 20D, the selection guide portion 30E, the common guide portion 20E, the selection guide portion 30F, the selection guide portion 30G, the selection guide portion 30H ... 30A The optical fiber 1 is clamped in this order, and then clamped to common guide portions 20A and 20B in this order so as to form an S shape, and then input to optical-electrical signal converter 110.

[0060] In the above example, the optical fiber cables 5C and 5D are , selection The optical fiber cables 5C and 5D are clamped in the order of the selection guide portion 30E, the common guide portion 20D, the selection guide portion 30A, and the common guide portions 20A and 20B, and are then input to the optical-electrical signal converter 110. The optical fiber cables 5C and 5D may be wound multiple times in the order of the selection guide portion 30E, the common guide portion 20D, the selection guide portion 30A, and the common guide portion 20E, thereby absorbing the excess length.

[0061] In the above example, the absorption of excess length of optical fiber cables 5C, 5D output from WDM circuit device 45 was described, but the input side of the optical fiber cables to WDM circuit device 45, i.e., optical fiber cables 6A, 6B, can be clamped with common guide sections 20D, 20E and selection guide sections 30 (30A, 30B, 30C, 30D, 30E) to absorb the excess length and input to WDM circuit device 45 for connection.

[0062] FIG. 6(d) shows an example of wiring holding for optical fiber cables 5C and 5D in which five common guide sections 20A, 20B, 20C, 20D, and 20E are used as the common guide section 20, and selective guide sections 30A and 30E are selected from the selective guide section 30 and used.

[0063] As shown in FIG. 6(d), the optical fiber cables 5C and 5D outputting the optical signals divided into predetermined optical wavelength bands by the WDM circuit device 45 are outputted via the output terminal unit 45c, for example. , selection Selection guide section 30E, common guide section 20D , Selection Guide 30A In an S-shape, the common guide portions 20A, 20B, and 20C are clamped in this order, and then the selection guide portion 30A and the common guide portions 20A and 20B are clamped in this order, and the signal is input to the optical-electrical signal converter 110.

[0064] In the above example, the optical fiber cables 5C and 5D are clamped in the order of selection guide portion 30E, common guide portion 20D, selection guide portion 30A, common guide portions 20A, 20B, 20C, selection guide portion 30A, and common guide portions 20A and 20B, and are input to the optical-electrical signal converter 110. Note that the optical fiber cables 5C and 5D may be wound multiple times in the order of common guide portions 20A, 20B, 20C, selection guide portion 30A, and common guide portions 20A and 20B, thereby absorbing the excess length.

[0065] In the above example, the absorption of excess length of optical fiber cables 5C, 5D output from WDM circuit device 45 was described, but the input side of the optical fiber cables to WDM circuit device 45, i.e., optical fiber cables 6A, 6B, can be clamped with common guide sections 20D, 20E and selection guide sections 30 (30A, 30B, 30C, 30D, 30E) to absorb the excess length and input to WDM circuit device 45 for connection.

[0066] (Effects of the embodiment of the present invention) The embodiments of the present invention have the following advantages. (1) The wiring and holding structure for an optical fiber cable according to an embodiment of the present invention includes a storage tray 10 that stores and holds an optical fiber cable 5, and a guide portion that is attached to the storage tray 10 and engages and holds the optical fiber cable 5, the storage tray 10 wiring and holding the optical fiber cable 5 while maintaining a radius equal to or greater than the allowable bending radius of the optical fiber cable 5, and the guide portion (20, 30) is configured to wire and hold the optical fiber cable 5 using a common guide portion 20 and a selective guide portion 30 selected from a plurality of selective guide portions 30. With this configuration, the common guide portion 20 and the selective guide portion 30 can be combined, so that the optical fiber cable 5 can be wired and held while absorbing the excess length while maintaining a radius equal to or greater than the allowable bending radius of the optical fiber cable 5. (2) In the second embodiment, the storage trays 10 are stacked in the required number of stages, and multiple fiber cables with different lengths can be wired and held in each stage. This allows the storage trays 10 to be connected in the required number of stages to form a stacked structure, making it easy to wire and hold the optical fiber cables 5, even if the number of optical fiber cables 5 increases due to the addition of WDM circuit modules, etc. (3) In the third embodiment, in addition to the common guide section 20 (20A, 20B, 20C) in the first embodiment, a common guide section 20 (20D, 20E) is added to the input side where the optical fiber cables 6A, 6B are located. When the storage path of the optical fiber cables 5 (5A, 5B, 5C, 5D), 6A is an oval shape or a path with a long straight line, the optical fiber cables 5 (5A, 5B, 5C, 5D), 6A, 6B tend to bulge outward, but these problems can be reduced and the path of the optical fiber cables can be reliably maintained. Also, the excess length of the optical fiber cables can be absorbed on the input side of the optical fiber cables to the optical communication device 100.

[0067] As is clear from the above description, the representative embodiments, examples, modifications, and illustrated examples of the present invention have been illustrated, but the above embodiments, examples, modifications, and illustrated examples do not limit the invention according to the claims, and the invention can be embodied in various forms without departing from the gist of the invention. Therefore, it should be noted that not all of the combinations of features described in the above embodiments, examples, modifications, and illustrated examples are necessarily essential to the means for solving the problems of the invention. [Explanation of symbols]

[0068] 1... Optical fiber cable wiring retention structure 5, 5A, 5B, 5C, 5D... Fiber optic cable 6A, 6B...Optical fiber cable 7...input line, line 8...electrical signal 10, 10A, 10B, 10C...Storage tray 12...Clamp hole 20, 20A, 20B, 20C, 20D, 20E...Common guide part 20a, 20b...Resin piece 20c…Insertion shaft part 30, 30A, 30B, 30C, 30D, 30E... Selection guide section 41...connector portion, 42, 44...Optical connector 43...Optical adapter 45...WDM circuit device 45a: input terminal section, 45b, 45c: output terminal section 51...Spacer 90…Housing 91…Bottom 100...Optical communication device 110...Opto-electrical signal converter

Claims

1. An optical fiber cable; a storage tray for storing and holding the optical fiber cable; a guide portion attached to the storage tray and configured to engage and hold the optical fiber cable; having The storage tray wires and holds the optical fiber cable in a state where a bending radius of the optical fiber cable is maintained equal to or larger than the allowable bending radius of the optical fiber cable, The guide portion includes at least three common guide portions arranged on a first circle having a radius equal to or larger than the allowable bending radius, a plurality of second circles obtained by sequentially shifting the first circle in a predetermined direction, and a plurality of selection guide portions, at least one of which is arranged on each of the first circle on the predetermined direction side, The optical fiber cable wiring and holding structure includes a common guide portion and a selective guide portion selected from the plurality of selective guide portions, the common guide portion corresponding to the first circle and the second circle through which the optical fiber cable passes, and the guide portion wires and holds the optical fiber cable.

2. 2. The optical fiber cable wiring and holding structure according to claim 1, wherein the optical fiber cable is wired and held by the common guide portion and the selected one or more selected guide portions.

3. 3. The optical fiber cable wiring and holding structure according to claim 1, wherein optical fiber cables having different slack lengths can be wired and held by the common guide portion and the selected one or more selected guide portions.

4. 4. The optical fiber cable wiring retention structure of claim 3, wherein the optical fiber cable pulled onto the first circle from a first direction passes through the specified direction side of the first circle or the second circle and is pulled out from the first circle in a second direction.

5. 5. The optical fiber cable wiring retention structure of claim 4, wherein the optical fiber cable pulled onto any of the second circles from a third direction passes through the specified direction side of the first circle and is pulled out from the first circle in the second direction.

6. 4. The optical fiber cable wiring and holding structure according to claim 3, wherein the storage tray has a layered structure in which a required number of stages are stacked, and the plurality of fiber cables having different excess lengths can be wired and held in each stage.

7. The optical fiber cable wiring holding structure according to any one of claims 1 to 6, An optical communication device comprising an optical wavelength division multiplexing communication device (WDM circuit device) for inputting or outputting an optical signal transmitted by the optical fiber cable.

8. 8. The optical communication device according to claim 7, wherein said optical wavelength division multiplexing communication device comprises a plurality of WDM circuit modules.

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