JPH07287129A - Optical communication equipment - Google Patents

Abstract

PURPOSE:To provide an optical communication equipment which is economical, good in operability, and high in safety, and also mounted which optical components by performing the surplus processing of an optical fiber. CONSTITUTION:An optical fiber holding component 6 is provided separately from a unit 1d, and after the excessive-length part 8b of the optical fiber is stored and held while a bending diameter larger than a specific diameter is secured with a clamp 7, this holding component 6 is inserted into the unit 1d through an opening part 4b formed in a panel 4. Further, the surplus part of the optical fiber and the optical component are fitted to a convection guide part and mount on a package, which is inserted into the unit 1d. Thus, the optical fiber surplus part 8b and optical component are mounted in the unit, so the need to install dedicated facilities is eliminated and the economical optical communication device is obtained. Further, the bending diameter of the optical fiber is secured and the device is so structured that the device is hardly touched by people and bodies, so the optical fiber surplus processing which is superior in operability and safety providing prevention against accidents such as an open circuit can be performed, and the reliability of communication facilities are improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of an apparatus using an optical fiber, and more particularly to the structure of an optical communication apparatus which is suitable for processing an extra length of an optical fiber and mounting optical parts.

[0002]

2. Description of the Related Art With the spread of high-speed broadband communication services,
FTTH (Fiber to the) that provides communication services by connecting all homes and telephone stations with optical fibers
home) is about to be introduced. This FTTH
If this is realized, communication equipment such as telephone stations will accommodate a huge amount of optical fibers, and as test equipment for maintenance and operation of FTTH, the light will be branched and the line with the subscriber (optical fiber). It is also necessary to provide an optical branching circuit for performing the test. In the conventional optical communication device,
To accommodate and expand optical fibers and mount optical components such as optical branch circuits for optical fiber testing, NTT technical ja
Naru (August, 1990) "To change the operation of optical lines now", to meet the increasing demand for digital communication services and to increase the capacity and number of cores of optical lines. A dedicated device (FTM) for accommodating an optical fiber having a configuration different from that of the transmission device (CT, SLT rack, etc.) was provided to test the accommodation of the optical fiber. In addition, as shown in Japanese Utility Model Laid-Open No. 61-157906, in the conventional surplus length treatment of an optical fiber, the surplus length portion of the optical fiber connected to each package is an electronic unit (hereinafter referred to as a unit) in the apparatus. It was carried out by accommodating collectively by four clamps provided on the side surface and performing extra length treatment. On the other hand, a conventional convection guide plate mounted on an electronic device is disclosed in Japanese Patent Laid-Open No. 63-1943.
As disclosed in Japanese Patent Laid-Open No. 97, it was mounted between units in the device only for the purpose of cooling the device.

[0003]

The conventional optical fiber or optical branch circuit is mounted by installing dedicated equipment such as a cabinet in addition to the existing equipment, and the installation space of the dedicated equipment is required. The cost will increase. In communication equipment that accommodates a large number of subscribers, even if a space for installing dedicated equipment for accommodating and testing optical fibers is provided, the space per subscriber becomes relatively small.
This problem is not so important. However, considering the actual application form of FTTH, a small number of telecommunications facilities are needed to efficiently accommodate a small number of subscribers dispersed in various places in a conventional communication network in the same manner as in the conventional communication network. Communication equipment for accommodating optical subscribers (optical fibers) is required.
Will increase the equipment cost per subscriber and become an obstacle to the economicization of FTTH. That is, the realization of an optical communication device that does not require a dedicated facility for accommodating an optical fiber or an optical branch circuit is indispensable for making FTTH economical.

In the conventional apparatus for accommodating an electric cable, if the excess length of the cables occurs, the installation cost of the communication equipment increases due to the space required for accommodating the cables, so that the length of the cable is adjusted locally. The construction method is used to prevent excess length of cables by connecting the cables. However, in the case of an optical fiber, extremely precise processing accuracy is required for connection as compared with a conventional electric cable, and for connection of a relay line in which a large number of signals are multiplexed and used, connection by on-site adjustment is not possible. Although implemented, it is not realistic from the viewpoint of time and cost to apply this to an FTTH facility that accommodates a huge number of optical fibers. In this case, it is more advantageous from the standpoint of construction period and cost to prepare a large number of cables with connectors that have fixed length optical fibers and install these cables. The treatment of excess length of several optical fibers becomes an important issue.

Moreover, the optical fiber is a precision component,
Compared to conventional electric cables, they are extremely sensitive to vibration and shock and are easily broken. Further, unless a bending diameter (diameter 6 cm or more) of a certain value or more is secured, the same state as disconnection occurs due to light attenuation. Therefore, in order to protect the extra length portion of the optical fiber, extra length treatment for securing a bend diameter of a certain value or more is used in a place where it is difficult for people or objects to touch, as shown in the prior art. However, FTTH
The equipment of is a facility that accommodates a huge number of optical fibers as compared with the conventional transmission device that accommodates optical fibers.
In the conventional surplus length treatment, the optical fibers are concentrated in a specific space, which makes it difficult to secure a bend diameter, which deteriorates the workability of the installation work. Also, even if the specific space that houses the optical fiber is a place where people and things are hard to touch, it is necessary to touch the optical fiber during installation work and testing. There is a risk of touching and breaking other optical fibers. This risk increases as the number of optical fibers increases. With conventional surplus length treatment, maintenance personnel often come into contact with optical fibers during expansion work and line tests, and the number of optical fibers is large.
It is not the optimum method for H equipment. In other words, it is important to realize a communication network using a highly reliable optical fiber, which realizes an optical communication device which is superior in workability and safety to the optical fiber and which is easy to process the optical fiber. It becomes an issue.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and it is not necessary to install dedicated equipment for accommodating or testing optical components such as optical fibers and optical branch circuits. In order to provide an optical communication device with excellent performance, especially in the extra length treatment of optical fiber, the bending diameter can be surely secured, and an optical system using a method with excellent workability and safety that is hard for humans and objects to touch. It is to provide a communication device.

[0007]

In order to achieve the above object, in the present invention, an optical communication device according to the present invention includes the following optical fiber, opto-electric converter, optical switch, optical amplifier, optical attenuator, optical distributor and optical device. The parts and means for accommodating the optical parts such as the coupling mechanism are provided. (1) In order to accommodate the optical fiber in the empty space in the unit, an optical fiber holding component for winding and accommodating the optical fiber extra length portion, which is separate from the unit, is prepared, and the extra optical fiber length portion is preliminarily wound and accommodated. further,
An opening is provided in the panel attached to the unit so that the holding component can be inserted into the empty space in the unit through this opening. The opening should be provided near the package (preferably the package mounting space near this package) where the optical components are mounted. If there are multiple packages, these should be distributed in the unit and the openings should also be distributed. For example, since the concentration of optical fibers can be prevented, it is easy to insert holding parts and connect optical fibers, and accidents such as disconnection can be prevented, which improves safety.

(2) The structure of the holding component is such that at least the optical fiber has a flat surface having an area capable of being wound while ensuring a certain bending diameter, and the material only holds the optical fiber. Therefore, either an insulating / non-insulating material is used. It is often configured to have the strength to support the weight of the optical fiber. Further, in order to hold and fix the optical fiber, a plurality of cable clamps are arranged on a plane so that the optical fiber can be held in a circular shape or an elliptical shape with a constant bending diameter. A preferable configuration is a plate having an area capable of holding an optical fiber in a circular or elliptical shape with a diameter of about 8 cm (preferably 6 cm or more) made of iron or plastic plated with zinc or chromium having a thickness of about 1 to 2 mm. , At least two cable clamps are arranged so that the optical fibers can be held in a circular or elliptical shape. Further, preferably, one end of this plate is bent into an L shape so that the opening of the panel is closed after the holding component is inserted into the unit, so that cooling efficiency deterioration and dust intrusion due to installation of the opening can be prevented.

(3) In the above holding component, a columnar or elliptical columnar protrusion is provided inside the circumference formed by a plurality of cable clamps, and the optical fiber is held along the outer periphery of the protrusion. It may be configured to secure the bending diameter of the optical fiber. Further, if the projection has a structure in which a recess is provided on the outer periphery of the projection, the optical fiber can be wound around and housed in the recess, so that the cable clamp can be omitted.

(4) The holding component may be provided with a cover for protecting the contained optical fiber. (5) An optical coupling mechanism such as an optical connector is installed on the holding component to terminate the connector on the optical fiber side when the extra length of the optical fiber is processed, and when this holding component is inserted into the unit, the optical coupling mechanism becomes a panel or package. It may be configured such that the optical fiber and the optical component mounted on the package are connected by being combined with the provided optical connector.

(6) In order to prevent the cooling efficiency from decreasing and the dust from entering, the opening of the panel is closed when the holding component is not inserted or after it is inserted. (7) A mechanism for holding the holding component when it is inserted into the unit is provided. As a preferable holding mechanism, a mechanism for providing a guide rail of a holding component on a housing, a mechanism for providing a guide rail for supporting the holding component on a package in which an optical component is mounted, and the like can be mentioned.

(8) Generally, for accommodating an optical fiber,
In addition to the above-mentioned unit, the communication device having the optical component has a convection guide section for cooling the unit. And
The convection guide has an inclined surface (a wrap-around prevention plate) that controls the flow of air, and the space generated on the inclined surface (downward surface) and the lower surface of the inclined surface is used to hold the above-mentioned holding parts and openings. Instead of the partial installation, the optical fiber holding (extra length processing) mechanism shown in (2) to (4) may be provided on the inclined surface.

(9) Furthermore, a component used for testing a line (optical fiber) such as an optical branch circuit may be attached to the inclined surface (entanglement prevention plate) using the space shown in (8). As a method of attaching the component, a connecting portion that is connected to the inclined surface that can be attached to the inclined surface, and a holding mechanism that is connected to the connecting portion and has a concave portion that accommodates the component in the vertical direction,
An attachment method in which a component is sandwiched between an inclined surface and a holding mechanism is given as an easy attachment method with a simple configuration.

(10) Further, components used for testing an optical fiber such as an optical branch circuit may be mounted in a package together with a circuit for controlling the test and provided in a unit. At this time, if the part where the optical components such as the optical branch circuit are mounted and the part where the control circuit is mounted are integrally mounted on the package as a removable structure, the circuit can be replaced according to the test contents. A test function with excellent operability can be provided. A notch is provided at two upper and lower positions on a base whose outer periphery is the same as that of the other package, and the notch is inserted as a guide rail to mount a first subpackage having a control circuit. A configuration in which a column is provided in the vertical direction on the component surface side and an optical component such as an optical branching circuit or a second sub-package in which a surplus length processing mechanism is mounted is mounted on the column is mentioned.

The above means may be combined to realize optical fiber holding (remaining length treatment) and mounting of optical components. For example, as shown in (9), the test function is installed in the unit, and the opening shown in (1) is provided in the vicinity of this package, and the optical fiber connected from the outside is accommodated in the optical fiber holding component. With the configuration of inserting from the opening, even if the connection of the optical fiber is changed during the test, the extra length of the optical fiber can be safely and easily accommodated and then connected to the test package for testing.

[0016]

Since each of the above-mentioned means operates as follows, an optical communication device excellent in expandability and economical efficiency which does not require dedicated equipment for accommodating optical components such as optical fibers and optical branch circuits, and Thus, it is possible to realize an optical communication device capable of reliably ensuring the bending diameter of an optical fiber, and having an excellent workability and safety of a structure in which a person or an object cannot easily touch it and capable of processing an extra length of an optical fiber. (1) After the extra length of the optical fiber is wound around the holding component, the extra length is accommodated in the empty space in the unit through the opening, so that dedicated equipment for accommodating the extra length is not required.
In addition, the workability is good because the extra length portion is wound around the holding component and then accommodated. In addition, since the empty space inside the unit is a place where people and things are hard to touch, accidents such as disconnection can be prevented, and safety is also improved. When there are a plurality of optical fibers, the openings are dispersed and arranged in the panel of the unit, so that the concentration of the optical fibers can be prevented, so that the workability is not complicated and the safety is further improved.

(2) A cable clamp is arranged in the holding component so that the bending diameter of the optical fiber can be surely secured, and the extra length portion is wound and accommodated in advance, so that the bending diameter changes during or after the operation. No disconnection occurs.
That is, it is possible to realize the extra length treatment of the optical fiber with excellent safety by a simple operation.

(3) Furthermore, if a protrusion for guiding the optical fiber is provided inside the cable clamp, workability and safety (particularly, ensuring the bending diameter) is further improved. (4) The structure in which the optical fiber is covered after it is wound up makes it more difficult for people and objects to touch, so that the safety is further improved. (5) The holding component is provided with an optical coupling mechanism, the connector on the optical fiber side is terminated, and the holding component can be connected to the optical connector on the unit side when inserting the holding component through the opening, so that the connecting work can be performed more easily and safely. .

(6) Since the opening is closed when the holding component is not inserted or after it is inserted, side effects such as reduction of cooling effect and dust intrusion due to installation of the opening do not occur. (7) Since the mechanism for supporting the holding component makes it difficult for an object to touch after the holding component is inserted, the safety is further improved. (8) The extra length of the optical fiber and the mounting of optical parts were performed in the space below the inclined surface (the entrainment prevention plate) that controls the air flow in the convection guide section and below the inclined surface. It is possible to realize an optical communication device that does not require a dedicated facility for accommodating parts and parts, and that is easy to install and economical, and that is capable of processing an extra length of an optical fiber and mounting optical parts. In addition, the space under the inclined surface is a place where people and things are hard to touch, so accidents such as wire breaks can be prevented, so safety is maintained.

(9) Further, by providing an extra length portion winding mechanism and a cover similar to the holding component to be inserted into the unit on the inclined surface, accidents such as disconnection can be prevented, so that safety is improved. (10) Since the test function for testing the optical fiber is also installed in the unit, a dedicated facility for accommodating the test function is unnecessary, and the FTTH facility can be economically realized. In addition, the control circuit that executes the test control is mounted in the unit so that it can be replaced, making it easy to adapt to changes in the test content, FTTH with excellent maintainability and expandability. The equipment can be realized economically. In particular, in telecommunications equipment that accommodates a small number of optical fibers, the necessity of dedicated equipment and the complexity of operation increase the cost of equipment installation, so these effects are remarkable.
It should be noted that by combining the respective means shown in the above means, these actions are also combined, and an optical communication device with improved economy, operability, maintainability, and safety can be realized.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an optical communication device according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a front perspective view showing a configuration of an optical communication device according to the present invention. The device 1 realizes a function defined by a communication system by combining a plurality of first packages 2 each having an optical component and an electrical component mounted therein and two second packages 3 each having an electrical component mounted therein. The housing 1c for inserting and holding the package 2 and the second package 3 and the plurality of the first packages 2 or the second packages 3 attached to the housing 1c are connected to each other or to the cable. The unit 1d including the panel 4 on which the connector 4a is installed is the unit mounting frame 1b.
The unit mounting frame 1b is mounted on the frame 1a, and the convection guide section 1e for controlling the air convection for cooling the first package 2 and the second package 3 is mounted on the frame 1a. Is. In this embodiment, the screw 5 is used to attach the panel 4 to the housing 1c, but it may be attached with a rivet or the like. Further, the panel 4 of FIG. 1 has an opening 4b for inserting a holding means 6 for accommodating and holding the extra length portion of the optical fiber into the unit 1d.
Is also provided.

<Embodiment 1> FIG. 2 is a first embodiment of an optical communication apparatus according to the present invention in which the extra length treatment of an optical fiber is easy, and the unit 1d shown in FIG. 1 is viewed from the rear side of the apparatus 1. It is a perspective view. The holding means 6 for accommodating and retaining the extra length portion 8b of the optical fiber 8 is a flat surface portion 6 for accommodating the extra length portion 8b.
Three cable clamps 7 are provided at a so that the extra length portion 8b can be held in a circular shape having a diameter that ensures a bending diameter (6 cm or more) that does not cause optical attenuation, and further this holding means 6 is inserted into the unit 1d. At this time, one end of the holding means 6 is bent into an L shape so as to close the opening 4b of the panel 4 and the closing portion 6 is formed.
b is provided. In addition, the blocking portion 6b is provided with a notch portion 6c so as not to damage the optical fiber 8, and an optical coupling mechanism 8c is provided so that the optical connector 8a attached to the optical fiber 8 can be terminated. The closing part 6
b may be provided depending on the cooling effect inside the unit 1d, and may be omitted if the opening 4b provided in the panel 4 does not pose a cooling problem. In this case, the connector 8a is directly terminated to the optical coupling mechanism 4a provided on the panel 4. The extra length portion 8b of the optical fiber 8 is circularly held by the holding means 6 by the cable clamp 7 and the optical connector 8a is connected to the optical coupling mechanism 8c. The step of accommodating and holding the extra length portion 8b) is completed.

The opening 4b of the panel 4 for inserting the holding means 6 into the unit 1d is provided in the first package 2 in order to downsize the holding means 6 and to shorten the optical fiber 8 exposed to the rear outside of the panel 4. It was set up near. When there are a plurality of first packages 2 inside the unit 1d, the concentration of the optical fibers 8 can be prevented by disposing the first package 2 and the opening 4b as a pair in a dispersed manner. further,
In this embodiment, the panel 4 is provided with support mechanisms 4c above and below the opening 4b for inserting and supporting the holding means 6 inside the unit 1d. The support mechanism 4c may be provided in the first package 2, and instead of the support mechanism 4c, the closing portion 6b may be inserted into the unit 1d and then fixed to the panel 4 with a screw. In any case, by inserting the holding means 6 into the unit 1d and then supporting and fixing the same, it is possible to further reduce an accident in which the extra length portion 8b is cut by touching an object.
When the step of inserting the holding means 6 containing the extra length portion 8b in advance from the opening 4b into the unit 1d is completed, the extra length treatment of the optical fiber is completed. In this embodiment, since the optical connector 8a is previously connected to the optical coupling mechanism 8c of the holding means 6, when the holding means 6 is inserted into the unit 1d, the connector 8a is connected to the optical coupling mechanism 4a provided on the panel 4. Therefore, the optical fiber connection work becomes easy.

<Embodiment 2> FIG. 3 is a second embodiment of an optical communication apparatus according to the present invention in which extra length treatment of an optical fiber is easy, and the unit 1d shown in FIG. 1 is seen from the rear side of the apparatus 1. It is a perspective view. That is, FIG.
(2) is a sectional view of a main part of the holding means 6, which is indicated by XX '. In this embodiment, a cylindrical protrusion having a diameter that ensures a bending diameter (6 cm or more) in which the extra length 8b does not cause optical attenuation is provided inside the cable clamp 7 provided on the flat surface 6a of the holding means 6 of the first embodiment. Another holding means 6A with the addition of an optical fiber guide consisting of 6d is used. By winding the extra length portion 8b along the protrusion 6d and holding the extra length portion 8b in the cable clamp 7, it is possible to easily and surely perform the extra length treatment for ensuring the bending diameter. Further, since the protrusion 6d prevents the extra length portion 8b from being deformed even after the extra length portion 8b is held, optical attenuation does not occur, and the extra length treatment of the optical fiber with higher reliability than that of the first embodiment is possible. Optical communication device can be realized. If the optical fiber guide formed of the protrusions 6d has a rim shape and the central portion around which the optical fiber is wound has a concave structure, the extra length portion 8b can be held more reliably. Further, the protrusion 6d does not necessarily have to have a cylindrical shape, and may have a ring shape.

<Embodiment 3> FIG. 4 is a third embodiment of an optical communication apparatus according to the present invention in which extra length treatment of an optical fiber is easy, and the unit 1d shown in FIG. 1 is viewed from the rear side of the apparatus 1. It is a perspective view. In this embodiment, a hole 6e to which a cover 9 for protecting the extra length portion 8b is attached after holding the extra length portion 8b is added to the outside of the cable clamp 7 provided on the flat surface portion 6a of the holding means 6A of the second embodiment. Another holding means 6B is used. Of course, the cover 9 can be attached to the holding means 6 of the first embodiment by adding the hole 6e. If the cover 9 is attached after holding the extra length portion 8b by using the hole 6e, the accident that the extra length portion 8b is cut by touching an object can be reduced to the first or second embodiment or more. Therefore, it is possible to realize an optical communication device capable of processing the extra length of an optical fiber with higher safety and reliability.

As described above in the first to third embodiments, according to the optical communication device of the present invention, the holding means 6 which is separate from the unit 1d is provided to accommodate the extra length portion 8b of the optical fiber 8 in advance. Since it is configured to be held, the extra length processing work can be performed in a wide space apart from the device 1,
Easy and reliable extra length processing. Further, since the holding means 6 is inserted into the unit 1d through a simple operation from the opening portions 4b provided in the vicinity of the first package 2 in a dispersed manner, it is special for accommodating the extra length portion 8b. No space or separate device is required, and since the optical fibers 8 are not concentrated, it is possible to easily and reliably perform extra length processing (insertion work), and the extra length portion 8b does not easily touch people or objects after insertion.
Further, since the optical fibers 8 exposed on the rear side of the panel 4 are also shortly dispersed, it is possible to realize an optical communication device having a high economical efficiency, safety and reliability in which accidents due to contact are prevented.

<Embodiment 4> In another embodiment of the optical communication apparatus according to the present invention, an optical component used for testing an optical fiber such as an optical branch circuit in the convection induction section 1e mounted on the apparatus 1 shown in FIG. The extra length portion of the optical fiber is mounted, and will be described in detail below with reference to FIGS. FIG. 5 is a perspective view of the convection guide section as viewed from the rear surface. A unit 1d is mounted on the frame 1a of the device 1 as shown in FIG.
Immediately below that, a convection guide section 1e for air cooling is mounted. Further, the convection guiding portion 1e has an inclined flat surface (hereinafter referred to as an entrainment prevention plate) 10 so that the cooling air is convected, and a space formed under the entrainment prevention plate 10. 10a is used to attach an optical component 12 such as an opto-electric converter, an optical switch, an optical amplifier, an optical attenuator, an optical coupling mechanism, an optical branch circuit, or an extra length of an optical fiber to the roll-in prevention plate 10. The mounting of the optical component 12 is
The optical component 12 is installed in the installation space 10b of the roll-in prevention plate 10.
The holding fixture 11 having the concave portion 11a for accommodating the optical component 12 is fixed to the roll-up prevention plate 10 with the screw 5 and sandwiched between the roll-up prevention plate 10 and the roll-up prevention plate 10. In addition, the number of the holding fixtures 11 is the number of the optical parts 12 to be attached.
The size is selected according to the size and the environment in which the device 1 is installed. That is, as shown in FIG. 5, one or more optical components 12 (right side mounting space 10b) or a plurality of (left side mounting space 10b, two in this embodiment) holding fixtures 1 are provided.
Install with 1.

FIG. 6, FIG. 7 and FIG. 8 show an embodiment of the structure of the holding device 11 and the method of fixing it to the roll-in prevention plate 10. The holding device 11 shown in FIG.
It has a flat surface portion which is in contact with 0 and is fixed by a screw 5, and a concave portion 11a for accommodating the optical component 12 is provided in the vertical direction of the flat surface portion. After housing the optical component 12 in the recess 11a, the screw 5 is attached to the screw hole 5a formed in the roll-in prevention plate 10 to fix the holding fixture 11 to the roll-up prevention plate 10. Further, a cushioning elastic body 11b such as rubber is provided between the optical component 12 and the holding device 11, and the optical component 12 is protected and securely fixed by the elasticity of the cushioning elastic body 11b.

7 and 8, the entanglement prevention plate 10 is provided with a mounting hole 10e instead of the screw hole 5a, and a holding device 11A or 11B made of a flexible material such as plastic is mounted in the mounting hole 10e. It is inserted and fixed to the roll-in prevention plate 10. Holding device 11A or 1
1B has a configuration in which a concave portion 11a for accommodating the optical component 12 and mounting portions to be inserted into the mounting holes 10e are provided at both ends of the concave portion 11a. After accommodating the optical component 12 in the concave portion 11a,
By using the flexibility of the material and inserting the mounting portion into the mounting hole 10e while bending the holding device, the holding device 1 can be mounted.
1A or 11B is fixed to the roll-in prevention plate 10. Of course, similarly to the holding device 11 of FIG.
The optical component 12 can be protected by the elasticity of the elastic body 11b for cushioning, and the optical component 12 can be securely fixed.

The extra length treatment of the optical fiber is the same as the extra length treatment shown in the first to third embodiments. Instead of the holding means 6, the entanglement prevention plate 10 is used, and the prevention plate 10 is used.
The extra length 8b of the optical fiber 8 in the mounting space 10c of
The cable clamp 7, the protrusion 10d, the cover 9 and the cover mounting hole 10f, which are similar to those shown in the first to third embodiments, are used to store and hold the above. In this embodiment, the mounting spaces 10b are dispersedly arranged on the roll-in prevention plate 10 so that the extra length portion 8b is not concentrated when there are a plurality of optical fibers 8.

As shown in the above embodiment, according to the optical communication apparatus of the present invention, the entrainment prevention plate 10 of the convection guiding section 1e is provided.
Using the space 10a formed at the lower part of the
Since the optical parts and the extra length of the optical fiber are installed in a distributed manner, no special space for mounting the optical part or the extra length of the optical fiber used for testing the optical fiber or another device is required, and Since the entanglement prevention plate 10 is present in the upper portion of the extra length of the optical fiber, it is possible to realize an optical communication device which is hard to touch a person or an object and which prevents accidents due to contact with high safety and reliability. Further, since the optical component 12 is sandwiched between the holding device 11 having the concave portion 11a for accommodating the optical component 12 and the roll-in prevention plate 10, the optical component 12 can be mounted by a simple and reliable operation. Is.

<Embodiment 5> This is an embodiment of the optical communication device according to the present invention in which the test of the optical fiber is easy, and is used for the test of the optical fiber such as the optical branch circuit in the unit 1d mounted on the device 1 shown in FIG. The optical component and the extra length of the optical fiber are integrally mounted on a test package similar to the package 2 together with a control circuit for controlling the test. 9 is a perspective view of the unit 1d viewed from the front, FIG. 10 is an exploded perspective view showing a detailed configuration example of the test package 15, and FIG. 11 is a perspective view of another configuration example of the test package 15.

The test package 15 mounted in the optical communication device of this embodiment has a substrate 15a having the same outer circumference as the package 2 and the package 3 and a notch 15c formed on the front side of the device 1 on both sides. A first sub-package 16 on which electrical parts such as a test control circuit are mounted by using a guide portion 14b formed by attaching a reinforcing plate 14 having a notch 14a whose vertical dimension is smaller than the notch 15a by 2-3 mm. While inserting the connector 15b and the connector 16a to connect the substrate 15a and the first sub-package 16 to the optical component 12 used for testing an optical fiber such as an optical branch circuit and an extra length 12a of the optical fiber. The sub-package 13 of the substrate 15a with the connecting pillar 18 and the screw 5
It was configured to be attached to.

The optical component 12 and the extra length portion 12a of the optical fiber are mounted on the second subpackage 13 in the same manner as the optical component mounting and the extra length treatment shown in the first to fourth embodiments. The optical component 12 was attached by the holding fixture 12b in the same manner as in the fourth embodiment, while the cable clamp 7 and the protrusion 13a were provided to accommodate and hold the extra length portion 12a as in the first and second embodiments. Although not implemented in this embodiment, a cover may be attached and protected after accommodating the extra length portion 12a as in the third embodiment. The optical fiber of the optical component 12 is terminated by the optical coupling mechanism 15d provided on the substrate 15a. Further, according to the necessity of appearance and air cooling effect, the front plate 17 can be attached to the front side of the package 15 as in the present embodiment, and as in another test package 15A shown in FIG. The mounting surfaces of the optical component 12 and the extra length portion 12a of the optical fiber on the second subpackage 13 may be reversed.

The test package 15 is mounted on the device 1 in the same manner as the packages 2 and 3 and is a unit 1d.
The optical communication device according to the present invention is completed by inserting the optical fiber into the optical connection mechanism 4a of the panel 4 attached to the unit 1d or an electric connector (not shown), and an optical fiber for realizing FTTH is obtained as shown in FIG. In the communication equipment to be used, if the optical fiber 8 is connected to the optical coupling mechanism 4a of the panel 4 from the rear side of the unit 1d, the optical fiber 8 can be easily tested.

Further, since the first subpackage 16 is inserted into the cutout portion of the substrate 15a of the test package 15 by the guide portion 14b and the connector 15b and the connector 16a connect the substrate 15a and the first subpackage 16, The test package 15 can be inserted and removed even when it is inserted in the unit 1d, and can be replaced if the test items are changed even after the test package 15 is once installed in the unit 1d.

As described above in the present embodiment, according to the optical communication device of the present invention, all the optical components used for testing the optical fiber and the extra length of the optical fiber are housed inside the unit, so these are mounted. No special space or separate equipment is required, and the extra length of components and optical fiber is hard to touch people and objects. Accidents due to contact are prevented. Mounting of optical components with high safety, reliability and economy. It is possible to realize surplus length treatment of optical fiber and optical fiber test. If the extra parts of the optical component and the optical fiber are mounted on the opposite surface of the second sub-package as shown in FIG. 11, a cover for protecting the extra part of the optical fiber is not necessary, and the safety and economy are improved. Is a high configuration.

Furthermore, the optical fiber test can be realized by a simple operation of inserting the integrated optical fiber test package into the unit and connecting the optical fiber to the unit. Moreover, the control circuit for controlling the test is in a state in which the test package is mounted. Since it can be replaced with, it is possible to easily support the functional expansion of the test system.

[0039]

As described above, according to the present invention, the intended purpose can be achieved. That is, by mounting a test package including an extra length portion of an optical fiber and an optical branch circuit in the unit of the existing equipment, or by mounting it in a convection induction portion in the equipment, the extra length portion and the test equipment which are conventionally required. Since there is no dedicated equipment for accommodating the equipment, it is possible to realize an economical device that can easily perform work such as expansion for a small capacity line and that does not require equipment cost or installation space. In particular, in the extra length treatment of an optical fiber, a bend diameter can be reliably ensured, and since it is a structure that is hard for humans and objects to touch, accidents such as disconnection can be prevented, and an optical communication device excellent in workability and safety can be provided.

Further, the test function for testing the optical fiber and the optical component can be mounted in the unit, and the control circuit for executing the test control can be replaced while mounted in the unit. FTTH equipment with excellent operability, maintainability, and expandability that can be easily adapted to changes in equipment can be realized economically. The above effect is particularly remarkable in a remote communication facility having a small number of optical fibers accommodated, since it prevents factors such as the need for a dedicated facility and operation complexity, which increase the facility cost.

[Brief description of drawings]

FIG. 1 is an assembled perspective view of an optical communication device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a main part of a unit of the optical communication device.

FIG. 3 is a perspective view of a main part of another unit of the same.

FIG. 4 is a perspective view of an essential part of another unit which is also different.

FIG. 5 is a perspective view of a convection guiding unit which is another embodiment of the optical communication device.

FIG. 6 is a perspective view showing an example of the optical component holding means and the mounting method.

FIG. 7 is a perspective view showing another example of the optical component holding means and the mounting method.

FIG. 8 is a perspective view showing still another example of the optical component holding means and the mounting method.

FIG. 9 is a perspective view of an essential part of another unit in which the test package is also mounted.

FIG. 10 is a perspective view showing the structure of a test package of the same.

FIG. 11 is a perspective view showing another configuration of the test package.

[Explanation of symbols]

1 ... Device, 1a ... Frame,
1b ... Mounting frame, 1c ... Housing, 1d ... Unit, 1e ... Convection guide part, 2 ... Optical component mounting package, 3 ... Electrical component mounting package, 4 ... Panel, 4a ... Optical coupling mechanism, 4b ...
Openings, 4c ... Supporting hardware, 5 ... Screws, 6 ... Optical fiber holding component, 6a ... Flat surface portion, 6b ... Closing portion,
6c ... notch, 6d ... protrusion,
6e ... Cover mounting hole, 7 ... Clamp,
8 ... Optical fiber, 8a ... Optical connector, 8b
... extra length portion, 8c ... optical coupling mechanism, 9 ... cover, 10 ... entrainment prevention plate, 10a
... Space, 11 ... Optical component holding fixture, 11a ... Component holding recess, 11b ... Cushioning material, 12 ... Optical component,
12a ... Extra length portion, 12b ... Optical component holding device, 1
3 ... Sub package (optical component mounted), 14 ... Reinforcement plate,
14a ... Notch, 14b ... Guide part, 15 ... Test package, 15a ... Board
15b ... connector, 15c ... notch,
Reference numeral 15d ... Optical coupling mechanism, 16 ... Sub-package (electrical component mounted), 16a ... Connector, 17 ... Front plate, 18 ... Connection post.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Ken Tajiri, Kenji Tajiri, 216 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa, Ltd. Information & Communications Division, Hitachi, Ltd. (72) Toshikazu Otake 180 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Address In the Nitto Telecommunication System Co., Ltd. (72) Kenji Okada, 1-6, Uchiyuki-cho, Chiyoda-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation (72) Instructor, Hitoshi Hashimoto 1-6-1, Uchiyuki-cho, Chiyoda-ku, Tokyo No. Japan Telegraph and Telephone Corp. (72) Inventor Hiroki Sasama 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corp.

Claims (17)

[Claims] 1. An optical communication unit comprising: a package on which at least optical components are mounted; a housing for housing and holding the package; and a panel for connecting at least an optical fiber to the package from outside the housing. In the optical communication device, the optical communication unit is provided with an optical fiber holding means for winding and holding at least an extra length portion of the optical fiber in a housing, and an insertion means for detachably inserting the optical fiber holding means into the housing. Optical communication device. 2. The optical communication device according to claim 1, wherein the optical fiber holding means and an inserting means for removably inserting the optical fiber holding means in a housing are arranged on a panel of an optical communication unit. 3. The optical fiber holding means has a clamp means for holding a cable, and the clamp means is arranged so that the optical fiber is wound and held in a circular shape or an elliptical shape on the plane of the optical fiber holding means. The optical communication device according to claim 1 or 2, which comprises: 4. The optical communication according to claim 3, wherein the clamp means comprises a plurality of cable clamps arranged on the plane of the optical fiber holding means so that the optical fiber is wound and held in a circular shape or an elliptical shape. apparatus. 5. The clamp means is provided with a protrusion having a circular or elliptical cross section on the plane of the optical fiber holding means so that the optical fiber is wound and retained in a circular or elliptical shape. The optical communication device according to claim 3, wherein the optical fiber is wound and held along the peripheral edge. 6. The clamp means is provided with a protection means for protecting the optical fiber after accommodating the optical fiber.
The optical communication device described. 7. The optical fiber holding means comprises a first optical coupling mechanism for terminating an optical fiber from the outside of the housing, and is connected to a second optical coupling mechanism provided in a panel or a package. 7. The optical communication device according to any one of 6 to 6. 8. The optical communication device according to claim 1, wherein the second holding means for holding the optical fiber holding means is provided in a housing, a package, or a panel. 9. An optical communication unit comprising at least a package on which optical components are mounted, a housing for housing and holding the package, and a panel for connecting at least an optical fiber to the package from outside the housing, and a convection guide. In the optical communication device including a section, at least an optical fiber holding unit that winds and holds an extra length of the optical fiber is disposed on a slope portion of the convection guiding unit. 10. The optical fiber holding means has a clamp means for holding the cable, and the clamp means is arranged so that the optical fiber is wound and held in a circular shape or an elliptical shape on the plane of the slope portion of the convection guiding portion. The optical communication device according to claim 9, which is provided. 11. The clamp means comprises a plurality of cable clamps arranged on the flat surface of the slope of the convection guide so that the optical fiber is wound and held in a circular or elliptical shape. Optical communication device. 12. The clamp means comprises a protrusion having a circular or elliptical cross section on the plane of the slope of the convection guide so that the optical fiber is wound and held in a circular or elliptical shape. The optical communication device according to claim 10, wherein the optical fiber is wound and held along the periphery of the protrusion. 13. The optical communication device according to claim 11, wherein the clamp means is provided with a protection means for protecting the optical fiber after accommodating it. 14. The convection guiding portion is provided with a joint portion with the slope portion and a protrusion portion protruding in the vertical direction of the joint portion and having a recess which is a space for accommodating an optical component, and is attachable to and detachable from the slope portion. 10. The optical communication device according to claim 9, further comprising a component holding means that is attachable to the. 15. The optical communication device according to claim 14, wherein a cushioning material is provided in the recess of the component holding means. 16. A first package having at least an optical component mounted thereon, a casing for housing and holding the first package, and a panel for connecting at least an optical fiber to the first package from outside the casing. In an optical communication device including an optical communication unit configured as described above, at least an optical branch circuit for inserting and separating an optical signal for a test into an optical fiber from the outside of the housing, and execution control of a test including control of the optical branch circuit are performed. An optical communication device having a configuration in which a test means including a control circuit is integrally mounted on a second package, and the second package is mounted inside the housing of the optical communication unit so as to be tested. 17. The second package has an integrated structure in which at least a first sub-package for mounting a control circuit and a second sub-package for mounting an optical branch circuit are combined, and the first sub-package is also provided. 2. The first package is a detachable structure in the second package having an integrated structure.
6. The optical communication device according to item 6.