JP2014211606A - Optical fiber holding member and optical module package using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to save time and effort of operation for holding optical fiber in a housing and to mitigate fear of damaging the optical fiber.SOLUTION: In an optical fiber holding member 10, a base part 13 and a holding part 14 are entirely formed using an elastic member. Guide groove parts 11 are formed that penetrate the holding part 14 from an outer end face 10a to a fiber reception part 12 along the axial direction of the optical fiber. Piece holding parts 14A and 14B include overhanging parts 14a and 14a that overhang outside of base part side faces 10c and 10d. When no external force is applied, the entire area from the inlet of the guide groove part 11 to the fiber reception part 12 is opened. The width L2 of the holding part 14 is larger than an accommodation width L1 by at least an inlet width d.

Description

  The present invention relates to an optical fiber holding member that holds an optical fiber connected to an optical waveguide device in which an optical waveguide is formed, and an optical module package using the optical fiber holding member.

  2. Description of the Related Art Conventionally, an optical module package in which an optical waveguide device in which a plurality of branched optical waveguides are formed and an optical fiber are connected and accommodated in a housing is known.

  Conventionally, optical module packages are used in harsh environments where temperature changes and humidity changes are severe, resulting in degradation of the joint strength at the connection between the optical waveguide and optical fiber, resulting in increased optical loss. There was a problem that deterioration of the water was inevitable.

  Therefore, conventionally, there has been a concept of sealing the inside of the housing by filling the housing with a jelly-like resin, thereby reducing the influence on the optical waveguide device due to a change in the external environment (see, for example, Patent Document 1). .

  And in the prior art currently disclosed by patent document 1, the cylindrical protective cover was provided in the both ends of the housing, and the optical fiber was penetrated there from the outer side.

  However, since the protective cover is elongated and the size of the insertion hole is small, the prior art disclosed in Patent Document 1 takes time and labor to insert the optical fiber, and breaks the optical fiber by breaking it. There was a problem that fear was inevitable.

  Therefore, conventionally, there has been known a technique in which members (optical fiber holding members) for holding optical fibers are provided on both sides inside the housing, and the optical fibers are held by them. (For example, refer to Patent Document 2 and Patent Document 3).

Japanese Patent Laid-Open No. 7-92342 JP 2006-30552 A JP 2005-10508 A Japanese Patent Laid-Open No. 11-190805

  In the optical module package disclosed in Patent Document 2 described above, the optical fiber is fixed by an optical fiber holding member.

  However, in the case of this optical module package, the optical fiber holding member has a through hole. And it was the structure which lets a tube pass through the through-hole, and inserts an optical fiber in the tube.

  In other words, in the case of this optical module package, the optical fiber holding member is not a member that directly holds the optical fiber but a member that holds the tube, and is a member that only holds the optical fiber indirectly through the tube. It wasn't too much. For this reason, the conventional technique disclosed in Patent Document 2 solves the problem that even if the optical fiber holding member is provided, it takes time to insert the optical fiber and the risk of damaging the optical fiber is unavoidable. Was not.

  On the other hand, the optical module package disclosed in Patent Document 3 has an optical fiber holding member using a material having rubber elasticity.

  However, in the case of this optical module package, since the optical fiber holding member has the following structure, in the prior art disclosed in Patent Document 3, it takes time to insert the optical fiber, and the optical fiber The problem of inevitable the risk of damage was not solved.

  In the optical fiber holding member disclosed in Patent Document 3, a block-shaped portion having a size that can be accommodated in a housing and a tapered portion are integrated. And one notch was formed so that both the parts might be straddled, and the penetration hole which lets a single optical fiber pass was formed inside the notch.

  However, when the optical fiber is held by the optical fiber holding member, the block portion and the tapered portion must be joined together to open the cut. In addition, the optical fiber has to be inserted through the cut while maintaining the open state by pressing the block-like portion and the tapered portion with fingers.

  For this reason, when trying to insert the optical fiber from the notch, the fingers that press the block-shaped portion and the tapered portion are likely to be in the way, so that it takes time to insert the optical fiber. In addition, before the insertion of the optical fiber is completed, the finger is released, which may cause either the block-shaped portion or the tapered portion to close and contact the optical fiber, thereby damaging the optical fiber.

  On the other hand, as disclosed in Patent Document 4, an optical fiber retainer provided with a cut portion opened in a V-shaped cross section has been known.

  However, this optical fiber retainer is closed at the entrance when the optical fiber is inserted, although the cut portion is open. For this reason, when trying to insert an optical fiber, the entrance portion must be opened by holding the cut portion with fingers or the like, and the open state must be maintained.

  Therefore, even when this optical fiber retainer is used, it has been impossible to solve the problem that it takes time to insert the optical fiber and may damage the optical fiber.

  As described above, in each of the conventional techniques, since it takes time to insert the optical fiber, it is difficult to reduce the time and effort for holding the optical fiber in the housing. Moreover, it has been difficult to reduce the risk of damaging the optical fiber.

  Accordingly, the present invention has been made to solve the above-described problems, and it is possible to reduce the labor of holding the optical fiber in the housing and reduce the possibility of damaging the optical fiber. It is an object to provide a holding member and an optical module package using the holding member.

  In order to solve the above problems, the present invention provides an optical fiber holding member for holding an optical fiber in a housing in which the optical waveguide device in which the optical waveguide is formed and the optical fiber connected to the optical waveguide device is accommodated. The base portion having an accommodation width corresponding to the short width inside the housing and the holding portion connected to the base portion are integrated, and the entire base portion and the holding portion are formed using an elastic member. And a guide groove that has a fiber receiving portion large enough to accommodate the optical fiber, and that extends from the outer end surface of the holding portion to the fiber receiving portion along the axial direction of the optical fiber. When both side portions sandwiching the guide groove portion are each a piece holding portion, at least one of the piece holding portions protrudes outward from the side surface of the base portion arranged with the accommodation width of the base portion therebetween. In the state where no external force is applied to the holding portion, when the whole from the entrance of the guide groove to the fiber receiving portion is opened, and the width along the accommodation width at the entrance of the guide groove is the entrance width, The optical fiber holding member is characterized in that the holding portion width along the holding width of the holding portion is larger by at least the entrance width than the holding width.

  Since the entire optical fiber holding member from the entrance of the guide groove to the fiber receiving part is open in the state of no external force, the optical fiber is inserted from the entrance of the guide groove without applying an external force to the holding part. It can be accommodated in the receiving part. Further, since at least one of the piece holding portions has an overhang portion, the base portion has an accommodation width corresponding to the short width, and the holding portion width is larger than the accommodation width by at least the entrance width, the base portion and the holding portion When the housing is accommodated in the housing, both the holding parts close and come into contact with each other, and the guide groove is closed.

  In the present invention, the entrance width is preferably larger than the receiving portion width along the accommodating width of the fiber receiving portion.

  By doing so, the optical fiber can be inserted into the guide groove portion even if the optical fiber is displaced from the fiber receiving portion and does not follow the fiber receiving portion.

  In the optical fiber holding member, it is preferable that a concave portion along the axial direction of the optical fiber is formed at a boundary portion between the base side surface and the holding portion side surface connected to the base side surface of the piece holding portion.

  By forming such a recess, the size of the portion that becomes the axis when the piece holding part is about to close is reduced, so that the elastic action to return the approaching piece holding part to the original is exhibited. The part to do becomes small.

  Further, in the optical fiber holding member, both of the piece holding parts sandwiching the guide groove part in the holding part have an overhang part, and the size of the overhang width projecting outward from the base side surface of both overhang parts. And the sum of the overhang widths of both of them can be made equal to the entrance width.

  Moreover, both of the piece holding portions sandwiching the guide groove portion in the holding portion have overhang portions, and the size of the overhang width of the both overhang portions that projects outward from the base side surface is equal to the entrance width. It can also be done.

  In the optical fiber holding member, both of the holding portions sandwiching the guide groove portion of the holding portion have protruding portions, and the protruding widths of the protruding portions are equal to each other. In addition, the size obtained by adding both overhang widths is larger than the entrance width, but it is preferable that each overhang width is smaller than the entrance width.

  Furthermore, it is preferable that the optical fiber holding member is formed in a reverse tapered shape in which the holding portion side surface connected to the base side surface of the piece holding portion gradually protrudes outward as the distance from the base portion increases.

  In the present invention, an optical waveguide device in which an optical waveguide is formed and an optical fiber connected to the optical waveguide device are accommodated in a housing, and the optical fiber uses an optical fiber holding member in the housing. In the optical module package that is held, the optical fiber holding member is formed by integrating a base portion having an accommodation width corresponding to a short width inside the housing and a holding portion connected to the base portion, and the base portion And the entire holding portion is formed using an elastic member, and has a fiber receiving portion large enough to accommodate an optical fiber, and the distance from the outer end surface of the holding portion to the fiber receiving portion is in the axial direction of the optical fiber. When the guide groove part penetrating along is formed and each side part sandwiching the guide groove part in the holding part is a piece holding part, at least one of the piece holding parts is Has an overhanging part that protrudes outward from the side of the base part that is spaced apart from the accommodating width of the part, and in the state of no external force that does not apply external force to the holding part, the entire part from the inlet of the guide groove to the fiber receiving part is open Then, when the width along the accommodation width at the entrance of the guide groove is defined as the entrance width, an optical module package is provided in which the holding portion width along the accommodation width of the holding portion is larger than the accommodation width by at least the entrance width.

  In the optical module package, the optical fiber holding member is disposed at both ends in the longitudinal direction of the housing, and the optical fiber holding member in the vicinity of the portion of the optical fiber that is led out to the outside of the optical fiber holding member is coated with an adhesive. It is preferable to be fixed to.

  As described above in detail, according to the present invention, the work for holding the optical fiber in the housing can be reduced, and the risk of damaging the optical fiber can be reduced. The used optical module package is obtained.

It is a disassembled perspective view which shows the stage in the middle of manufacture of the optical module package which concerns on embodiment of this invention. FIG. 2 is a perspective view illustrating a subsequent stage of FIG. 1. It is the perspective view which shows the optical module package of FIG. 1 seen from one side. It is a perspective view which shows the optical module package seen from the other. It is a perspective view which shows the external force state of an optical fiber holding member. It is a perspective view which shows the optical fiber holding member of the state which applied the external force. It is a front view which shows the optical fiber holding member of the state of no external force shown in FIG. It is also a plan view. It is a front view which shows the optical fiber holding member of the external force state which concerns on the modification 1. FIG. It is also a plan view. It is a front view which shows the optical fiber holding member of the external force state which concerns on the modification 2. FIG. It is also a plan view. It is a front view which shows the optical fiber holding member of the external force state which concerns on the modification 3. FIG. It is also a plan view. It is a front view which shows the optical fiber holding member of the external force state which concerns on the modification 4. It is a front view which shows the optical fiber holding member of the external force state which concerns on the modification 5. FIG. It is a perspective view which shows the optical fiber holding member of the external force state which concerns on the modification 6. FIG. It is a perspective view which shows the optical fiber holding member of the state which applied the external force which concerns on the modification 6. FIG. FIG. 10 is a perspective view showing an optical fiber holding member in a state of no external force according to Modification 7. It is a perspective view which shows the optical fiber holding member of the external force state which concerns on the modification 8. FIG. It is a front view which shows the optical fiber holding member of the external force state which concerns on the modification 9. FIG. It is a front view which shows the optical fiber holding member of the external force state which concerns on the modification 10. FIG. It is a top view which shows a schematic structure of an optical waveguide device.

Embodiments of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is used for the same element and the overlapping description is abbreviate | omitted.
(Optical module package structure)
First, the structure of the optical module package according to the embodiment of the present invention will be described with reference to FIGS. Here, FIG. 1 is an exploded perspective view showing a stage in the process of manufacturing the optical module package 200 according to the embodiment of the present invention, and FIG. 2 is a perspective view showing a stage subsequent to FIG. 3 is a perspective view showing the optical module package 200 seen from one side, and FIG. 4 is a perspective view showing the optical module package 200 seen from the other side. The structure of the optical module package 200 will be described with reference to these drawings.

  The optical module package 200 includes a housing 1 and a cover 2. The optical module package 200 includes an optical waveguide device 5, an optical fiber member 6 and a tape-shaped optical fiber member 7 connected to the optical waveguide device 5, and a pair of optical fiber holding members 10 (10A, 10B). These are housed in the housing 1. At that time, the optical fiber member 6 and the tape-shaped optical fiber member 7 are held by the optical fiber holding members 10A and 10B, respectively.

  In the optical module package 200, when the entire guide groove portion 11 is opened in the state of no external force (details will be described later) shown in FIG. 5 and accommodated in the housing 1, the guide groove portion 11 is shown in FIG. Since the optical fiber holding member 10 has such a feature that the optical fiber member 6 and the tape-like optical fiber member 7 are held in the housing 1, the labor of the operation is remarkably reduced. 5 is a perspective view showing a state in which the optical fiber holding member 10 has no external force, and FIG. 6 is a perspective view showing the optical fiber holding member 10 in a state in which an external force is applied by being accommodated in the housing 1 or the like.

  The housing 1 has a bottom portion 1a and two wall portions 1b and 1c that face each other, and is generally U-shaped. As shown in FIG. 1, the housing 1 has a width (short width) in the direction along the short side of the bottom portion 1 a set to L, and thus the inner short width is set to L. The housing 1 has a length that can accommodate the optical fiber member 6 and the tape-shaped optical fiber member 7 together with the optical fiber holding member 10 (10A, 10B) and the optical waveguide device 5 with a predetermined length. The height (also referred to as the housing height) of the inside (the housing portion that houses the optical fiber holding member 10 and the like) is set to H.

  The cover 2 has a top end portion 2 a and two wall portions 2 b and 2 c facing each other, and is formed in a generally U shape having a size covering the housing 1. The short width of the top end 2 a is slightly larger than the short width L of the housing 1, and the walls 2 b and 2 c are formed in a size corresponding to the walls 1 b and 1 c of the housing 1. When the cover 2 is put on the housing 1, as shown in FIG. 2, the walls 2b and 2c are in close contact with the walls 1b and 1c of the housing 1 from the outside, and the top surface of the housing 1 is covered by the top end 2a.

  As shown in FIG. 23, the optical waveguide device 5 has an optical waveguide substrate 5b on which an optical waveguide 5a is formed and fiber connectors 5c and 5d, and has a structure in which these are integrated.

  The optical waveguide 5a is formed so that a multi-core waveguide core branches from a single-core waveguide core. By the optical waveguide 5a, the light incident from the single-core waveguide core can be evenly branched to the multi-core waveguide core.

  The fiber connector 5c is a connector to which a single-core optical fiber member 6 is connected, and is fixed to one end of the optical waveguide substrate 5b using an adhesive (not shown). The fiber connector 5d is a connector to which the multi-core tape-like optical fiber member 7 is connected, and is fixed to the other end portion of the optical waveguide substrate 5b using an adhesive (not shown).

  The optical fiber member 6 has a structure in which the periphery of a single-core optical fiber is covered with a coating material. The tape-shaped optical fiber member 7 has a structure in which a plurality of (for example, eight) optical fibers arranged in parallel with each other are covered with a coating material to form a tape shape.

  Next, the optical fiber holding member 10 will be described with reference to FIGS. 7 and 8 in addition to FIGS. 7 is a front view showing the optical fiber holding member 10 in the state of no external force shown in FIG. 5, and FIG. 8 is a plan view of the same.

  The optical fiber holding member 10 has a structure in which a base portion 13 and a holding portion 14 are integrated. As for the optical fiber holding member 10, the whole base 13 and the holding part 14 are formed using the elastic member. For example, the optical fiber holding member 10 is made of chloroprene rubber, butyl rubber, chlorosulfonated polyethylene rubber, ethylene propylene rubber, acrylonitrile rubber, polysulfide rubber, natural rubber, other silicon rubber, fluorine rubber used as an industrial rubber packing material. It can be formed using rubber such as polyacrylic rubber and polyurethane rubber.

  The base portion 13 is formed in a rectangular parallelepiped shape having an accommodation width L1 corresponding to the short width L of the housing 1 and a predetermined depth. A portion surrounded by the bottom portion 10b, two base side surfaces 10c and 10d, and a part of a concave portion 15 described later is a base portion 13.

  The holding portion 14 is a portion connected to the base portion 13, and a guide groove portion 11 is formed from the outer end surface 10 a toward the base portion 13. Further, both side portions sandwiching the guide groove portion 11 are piece holding portions 14A and 14B, respectively, and both of the piece holding portions 14A and 14B have an overhanging portion 14a. The horizontal width of the holding portion 14 is the interval between the portions of the holding portion 14 that protrude outwardly along the accommodation width L1 (portions that protrude outwardly of the protruding portions 14a and 14a), and this is the holding portion width. L2 is set. The holding portion width L2 is formed to be larger than the accommodation width L1 by an inlet width d described later.

  The guide groove portion 11 has a fiber receiving portion 12 having a size that can accommodate the optical fiber member 6 described above. And the guide groove part 11 has penetrated along the axial direction of the optical fiber member 6 over the whole depth direction of the holding | maintenance part 14 between the outer end surface 10a and the fiber receiving part 12. FIG. Further, in the state of no external force, the whole from the entrance of the guide groove 11 to the fiber receiver 12 is opened. The external force state means a state in which at least the holding portion 14 is not applied with any external force and is stationary.

  The guide groove portion 11 has a variable width portion 11a and a constant width portion 11b, and the shape when viewed from the front is generally Y-shaped. The variable width portion 11a is connected to the constant width portion 11b, and the width in the direction along the accommodation width L1 gradually increases from the portion connected to the constant width portion 11b toward the outer end surface 10a. And the width | variety along the accommodation width L1 in the entrance of the guide groove part 11 is set to the entrance width d. The entrance width d corresponds to the widest width of the variable width portion 11a.

  The constant width portion 11b is formed to have a constant width in the direction along the accommodation width L1. Further, the receiving portion width w along the accommodation width of the fiber receiving portion 12 is slightly larger than this width, and the entrance width d is larger than the receiving portion width w (d> w). The bottom part inside the constant width part 11 b is a fiber receiving part 12. The fiber receiver 12 has a shape that is substantially circular when viewed from the front.

  The overhang portions 14a and 14a are portions that protrude outward from the base side surfaces 10c and 10d in the piece holding portions 14A and 14B. The side surfaces of the overhang portions 14a and 14a correspond to the holding portion side surfaces 14b and 14b. The holding portion side surfaces 14b and 14b are connected to the base side surfaces 10c and 10d, and are formed in a reverse taper shape that gradually protrudes outward as the distance from the base portion 13 increases.

  Then, when the overhanging width is the width of the overhanging portions 14a, 14a projecting outward from the base side surfaces 10c, 10d, each overhanging width is set to half the entrance width d (d / 2). ing. Therefore, the overhang widths of the overhang portions 14a and 14a are equal, and the sum of the overhang width is equal to the entrance width d. Furthermore, the lateral width along the outer end surface 10a of the overhang portions 14a, 14a is set to half (L1 / 2) of the accommodation width L1.

  Furthermore, the optical fiber holding member 10 has recesses 15 and 15 formed therein. The recesses 15, 15 are formed along the axial direction of the optical fiber member 6 over the entire depth direction of the boundary portion between the base side surfaces 10 c, 10 d and the holding unit side surfaces 14 b, 14 b. The illustrated recesses 15 are formed in a semicircular shape when viewed from the front.

  The pair of optical fiber holding members 10 (10A, 10B), the optical waveguide device 5, the optical fiber member 6, and the tape-shaped optical fiber member 7 as described above are accommodated in the housing 1, and the cover 2 is covered from above. An optical module package 200 is configured.

  In this case, for example, the optical module package 200 can be manufactured by the following manufacturing method A. In the manufacturing method A, first, as shown in FIG. 1, the optical fiber holding members 10 (10A, 10B) are arranged at both ends along the length direction of the housing 1, and the optical fiber holding members 10A, 10B are arranged. Semi-contained.

  That is, for the optical fiber holding member 10 </ b> A, the base portion 13 is fitted into the housing 1, and the holding portion 14 is disposed outside the housing 1. On the other hand, the optical fiber holding member 10B is laid sideways so that the guide groove portion 11 faces the direction orthogonal to the optical fiber holding member 10A. Then, one half of the base portion 13 and one piece holding portion 14 </ b> B are fitted into the housing 1, and the remaining half portion of the base portion 13 and the other piece holding portion 14 </ b> A are disposed outside the housing 1.

  Then, the optical fiber member 6 and the tape-shaped optical fiber member 7 are connected in advance to the fiber connectors 5c and 5d of the optical waveguide device 5, and in this state, the optical waveguide device 5 is arranged at the center in the length direction inside the housing 1. To do.

  Then, as described above, in the optical fiber holding members 10A and 10B, the entire guide groove portion 11 is opened in the state of no external force. Therefore, as shown in FIG. 1, the optical fiber member 6 can be inserted from the outside of the guide groove portion 11 and accommodated in the fiber receiving portion 12 without touching the optical fiber holding member 10 </ b> A. Also, the optical fiber holding member 10B can be inserted between the fiber receiving portion 12 and the guide groove portion 11 by inserting the tape-like optical fiber member 7 from the outside of the guide groove portion 11 without touching it.

  When the steps up to here are completed, the state shown in FIG. 1 is obtained. In the steps so far, the optical fiber member 6 and the tape-shaped optical fiber member 7 are connected to the optical waveguide device 5, and after these are combined, the optical fiber member 6 and the like are held by the optical fiber holding members 10A and 10B. ing.

  Unlike the above, the optical module package 200 may be manufactured by the following manufacturing method B. In the manufacturing method B, first, the optical fiber member 6 and the tape-shaped optical fiber member 7 are connected in advance to the fiber connectors 5c and 5d of the optical waveguide device 5, and these are collected in the same manner as in the manufacturing method A.

  Next, the optical fiber holding member 10A is put in a semi-accommodating state similar to the manufacturing method A, but before the optical fiber holding member 10B is put in a semi-accommodating state, the optical fiber holding member 10A is laid sideways and accommodates the tape-shaped optical fiber member 7 first. To do. Then, after arrange | positioning the optical waveguide device 5 in the length direction center inside the housing 1, the optical fiber holding member 10B is made into a semi-accommodating state similarly to the manufacturing method A. Then, the optical fiber member 6 is inserted from the outside of the guide groove portion 11 and accommodated in the fiber receiving portion 12. When the steps up to here are completed, the state shown in FIG. 1 is obtained.

  Further, the following manufacturing method C may be used. That is, the optical fiber member 6 and the tape-shaped optical fiber member 7 are connected in advance to the fiber connectors 5c and 5d of the optical waveguide device 5, and the optical fiber member 6 and the tape-shaped optical fiber member 7 are held in the optical fiber in this state. After being accommodated in the fiber receiver 12 of the members 10A and 10B, the optical fiber holding members 10A and 10B may be in a semi-accommodating state similar to the manufacturing method A.

  In addition, after the optical fiber member 6 and the tape-shaped optical fiber member 7 are first held by the optical fiber holding members 10A and 10B, they may be connected to the optical waveguide device 5.

  Thereafter, the optical fiber holding members 10A and 10B are completely accommodated in the housing 1 by pushing them with fingers from above. In addition to the optical fiber holding members 10 </ b> A and 10 </ b> B, the optical fiber member 6, the tape-shaped optical fiber member 7, and the optical waveguide device 5 are also accommodated in the housing 1. When the cover 2 is put on the housing 1 instead of pushing the optical fiber holding members 10A and 10B with fingers, the optical fiber holding members 10A and 10B are accommodated in the housing 1 by pressing the cover 2 from above. May be.

  Next, the cover 1 is put on the housing 1. Then, as shown in FIG. 2, the optical fiber holding members 10A and 10B, the optical fiber member 6, the tape-shaped optical fiber member 7, and the optical waveguide device 5 are covered by the top end portion 2a. Further, the wall portions 2b and 2c are brought into close contact with the wall portions 1b and 1c of the housing 1 from the outside so that the housing 1 and the cover 2 are integrated.

  Then, an adhesive may be applied to the gap between the optical fiber holding members 10A and 10B and the housing 1 and the cover 2 to bond the optical fiber holding members 10A and 10B to the housing 1 and the cover 2. In this case, since the optical fiber holding members 10A and 10B are fixed to the housing 1 and the cover 2, the possibility that the optical fiber holding members 10A and 10B are detached from the housing 1 and the cover 2 can be eliminated.

  Subsequently, as shown in FIG. 3, the adhesive 8 is applied to the base of the portion of the optical fiber member 6 that is led out of the optical fiber holding member 10A (the portion in the vicinity of the optical fiber holding member 10A). The fiber member 6 is fixed to the optical fiber holding member 10A. Similarly, as shown in FIG. 4, the adhesive 9 is applied to the base of the portion of the tape optical fiber member 7 that is led out of the optical fiber holding member 10B to attach the tape optical fiber member 7 to the optical fiber holding member 10B. Secure to. When the steps up to here are completed, the optical module package 200 is obtained.

(Functional effects of optical module package)
As described above, the optical module package 200 includes the optical fiber holding members 10A and 10B, and the optical fiber member 6 and the tape-like optical fiber member 7 are held by these members.

  The optical fiber holding members 10 </ b> A and 10 </ b> B have a guide groove portion 11, and the guide groove portion 11 penetrates from the outer end surface 10 a to the fiber receiving portion 12 along the axial direction of the optical fiber member 6. Moreover, the whole is open in the state of no external force. Therefore, the optical fiber member 6 and the tape-shaped optical fiber member 7 are inserted into the guide groove portion 11 from the outside without pressing the optical fiber holding members 10A and 10B with fingers or tools or opening the guide groove portion 11 with fingers or tools. Then, it can be accommodated in the fiber receiver 12.

  Moreover, since the entrance width d is larger than the receiving portion width w, not only when the optical fiber member 6 is parallel along the fiber receiving portion 12, but also when the optical fiber member 6 is slightly inclined with respect to the fiber receiving portion 12, The optical fiber member 6 can be inserted into the guide groove 11. Therefore, the optical fiber member 6 can be accommodated in the fiber receiver 12 more easily.

  Furthermore, since the entire optical fiber holding members 10A and 10B are formed of an elastic member, the optical fiber holding members 10A and 10B are appropriately deformed according to the force applied from the outside.

  In this case, each of the piece holding portions 14A and 14B has a protruding portion 14a. Therefore, after the optical fiber holding members 10A and 10B are placed in the semi-accommodating state described above, when they are pushed into the housing 1, the protruding portions 14a are present so that the piece holding portions 14A and 14B are both outside in the width direction. Pushed inside. And piece holding | maintenance part 14A, 14B approaches so that the guide groove part 11 may be narrowed.

  Moreover, since the holding portion width L2 is larger than the accommodation width L1 by the entrance width d, when the optical fiber holding members 10A and 10B are further pushed into the housing 1 from the semi-accommodating state, the wall portions 1b and 1c of the housing 1 The piece holding portions 14A and 14B are pushed inward by the entrance width d. Therefore, when the optical fiber holding members 10A and 10B are completely accommodated, the inlets of the piece holding portions 14A and 14B are completely brought into close contact with each other, and the guide groove portion 11 is completely closed as shown in FIGS. . At this time, the height of the optical fiber holding member 10 (also referred to as a closing height) is H1. This closing height H1 corresponds to the housing height H of the housing 1.

  As described above, in the optical module package 200, in order to hold the optical fiber member 6 and the like in the housing 1, there is no need for troublesome work such as inserting the optical fiber member 6 and the like into an elongated tube-shaped member. In addition, when inserting the optical fiber member 6 or the like into the optical fiber holding members 10A and 10B, it is not necessary to open the piece holding portions 14A and 14B with fingers or the like and maintain the open state.

  Therefore, in the optical module package 200, the labor for holding the optical fiber member 6 and the like in the housing 1 (hereinafter also referred to as “optical fiber holding operation”) can be significantly reduced, and the optical fiber member 6 can be reduced. It is possible to reduce the risk of damage.

  Moreover, since the overhang | projection width of the overhang | projection parts 14a and 14a is equal, piece holding | maintenance part 14A, 14B is pushed in equally by wall part 1c, 1b, respectively. Therefore, the optical fiber holding members 10 </ b> A and 10 </ b> B are easily pushed into the housing 1.

  And when the accommodation state of optical fiber holding member 10A, 10B advances from a half accommodation state, ie, when accommodating optical fiber holding member 10A, 10B in the housing 1, boundary BL of the base 13 and the holding part 14, and its The piece holding portions 14A and 14B approach the inside around the periphery.

  By forming the concave portion 15, the size of the portion serving as an axis when the piece holding portions 14 </ b> A and 14 are about to close is reduced. Therefore, the part which exhibits the elastic effect which tries to return the piece holding | maintenance part 14A, 14 which approaches is also small. Then, since it becomes possible to reduce the force that hinders the approach of the piece holding portions 14A and 14B, it is possible to reduce the load required when the optical fiber holding members 10A and 10B in the semi-accommodating state are further pushed. Therefore, the optical fiber holding members 10A and 10B can be pushed into the housing 1 more easily.

  Furthermore, since both the piece holding parts 14 have the overhang | projection part 14a and also the holding part side surface 14b of each overhang | projection part 14a is formed in the reverse taper shape, the piece holding parts 14A and 14B are gradually used. The optical fiber holding members 10A and 10B can be accommodated while being narrowed. Therefore, the load when trying to push the optical fiber holding members 10A and 10B into the housing 1 can be further reduced. Therefore, the optical fiber holding members 10A and 10B can be pushed into the housing 1 more easily.

  As shown in FIG. 7 and the like, in the state of no external force, both the outer end surfaces 10a are not parallel to the bottom portion 10b because the piece holding portions 14A and 14B are opened to the left and right. In the optical fiber holding members 10A and 10B, the width of the piece holding portions 14A and 14B is set to L1 / 2, and both outer end faces 10a are formed in a gently tapered shape. In this way, in the fully accommodated state as shown in FIG. 6, the guide groove portion 11 is completely closed, and both the outer end surfaces 10a are parallel to the bottom portion 10b and connected to one. Can be a surface.

  Furthermore, since the bases of the optical fiber member 6 and the tape-shaped optical fiber member 7 are respectively fixed to the optical fiber holding members 10A and 10B with an adhesive, the optical fiber member 6 and the tape-shaped optical fiber member 7 The position with respect to the optical fiber holding members 10A and 10B does not change. If the bases of the optical fiber member 6 and the tape-shaped optical fiber member 7 are not fixed, the optical fiber member 6 and the tape-shaped optical fiber member 7 may move in the guide groove 11 and change their positions. However, in the case of the optical module package 200, there is no such fear.

(Modification 1)
The optical fiber holding member 30 according to Modification 1 will be described with reference to FIGS. The optical fiber holding member 30 is different from the optical fiber holding member 10 in that it has a holding portion 34 instead of the holding portion 14.

  The holding part 34 has piece holding parts 34A and 34B. The piece holding portions 34A and 34B are different from the piece holding portions 14A and 14B in that they have an overhanging portion 34a. The overhanging portion 34a is different from the overhanging portion 14a in that the overhanging width is larger than that of the overhanging portion 14a and is set to a size equal to the inlet width d. The lateral width of the overhang portions 34a, 34a is set to 34L / 2. 34L is larger than the holding portion width L2 of the optical fiber holding member 10.

  In the case of this optical fiber holding member 30, the overhang width of the overhang portion 34a is set to be equal to the entrance width d. In the case of the optical fiber holding member 10 described above, the overhang width of the overhang portion 14a is set to a half size (d / 2) of the entrance width d. Therefore, in the fully accommodated state in the housing 1, the inlet of the guide groove part 11 closely_contact | adheres and it will be in a completely closed state.

  However, since the combined size of both of the overhang portions 14a is equal to the entrance width d, when the optical fiber holding member 10 is in the fully accommodated state, the force (narrowing the guide groove portion 11) ( The groove closing force) no longer works.

  On the other hand, in the case of the optical fiber holding member 30, the projecting width of both projecting portions 34a is set to be equal to the entrance width d. Therefore, when the two overhanging widths of both overhanging portions 34a are combined, it becomes 2d, which is twice as large as the entrance width d.

  Therefore, the projecting portions 34a and 34 come into contact before the optical fiber holding member 30 is completely accommodated, and the groove closing force is applied thereafter. Accordingly, the groove closing force is strengthened more than the optical fiber holding member 10. The optical fiber holding member 30 can hold the optical fiber member 6 and the tape-shaped optical fiber member 7 more firmly than the optical fiber holding member 10.

(Modification 2)
An optical fiber holding member 40 according to Modification 2 will be described with reference to FIGS. The optical fiber holding member 40 is different from the optical fiber holding member 10 in that a guide groove portion 41 is provided instead of the guide groove portion 11.

  The guide groove portion 41 has the fiber receiving portion 12 similarly to the guide groove portion 11, but is formed substantially in a V shape. That is, the guide groove portion 41 is formed in a shape in which the width gradually increases from the fiber receiving portion 12 to the entrance.

  Even with the optical fiber holding member 40 having such a V-shaped guide groove 41, the optical fiber member 6 and the tape-like optical fiber 7 can be held in the same manner as the optical fiber holding member 10. It is possible to remarkably reduce the risk of damage to the optical fiber member 6 and the like.

(Modification 3)
An optical fiber holding member 50 according to Modification 3 will be described with reference to FIGS. The optical fiber holding member 50 is different from the optical fiber holding member 10 in that it has a guide groove 51 instead of the guide groove 11.

  The guide groove portion 51 has a fiber receiving portion 52 and is generally formed in an I shape. That is, the guide groove 51 is formed to have a substantially constant width from the fiber receiving portion 52 to the entrance. The horizontal width (receiving portion width) of the fiber receiving portion 52 is d / 2, and the horizontal width of the guide groove portion 51 is also set to the same d / 2.

  Even with the optical fiber holding member 40 having such an I-shaped guide groove 51, the optical fiber member 6 and the tape-like optical fiber 7 can be held in the same manner as the optical fiber holding member 10. And the risk of damage to the optical fiber member 6 and the like can be reduced.

(Modification 4)
An optical fiber holding member 60 according to Modification 4 will be described with reference to FIG. The optical fiber holding member 60 is different from the optical fiber holding member 10 in that it has a piece holding portion 34B instead of one piece holding portion 14B.

  The optical fiber holding members 10 and 30 described above have the piece holding portions 14A, 14B, 34A, and 34B, respectively, but each piece holding portion has the same size and shape.

  On the other hand, since the optical fiber holding member 60 includes the piece holding portion 14A and the piece holding portion 34B, the optical fiber holding member 60 has piece holding portions having different sizes and shapes. In the case of the optical fiber holding member 60, when both of the overhanging widths of the overhanging portion 14a and the overhanging portion 34a are combined, 3d / 2 is obtained, which is 1.5 times the entrance width d. .

  Therefore, the overhanging portions 14a and 34a are in contact with each other before the fully accommodated state, and the groove closing force is applied thereafter. Therefore, the optical fiber holding member 60 has a stronger groove closing force than the optical fiber holding member 10 and can hold the optical fiber member 6 and the tape-shaped optical fiber member 7 more firmly.

  Even with such an optical fiber holding member 60, the labor of holding the optical fiber can be remarkably reduced, and the risk of damage to the optical fiber member 6 and the like can be reduced.

(Modification 5)
An optical fiber holding member 65 according to Modification 5 will be described with reference to FIG. Compared with the optical fiber holding member 30, the optical fiber holding member 65 has a piece holding portion 67 instead of one piece holding portion 34 (the left side holding portion 34A in FIG. 9), and instead of the guide groove portion 11. The difference is that the guide groove portion 66 is provided.

  The piece holding part 67 is different from the piece holding part 34A in that it does not have the overhanging part 34a. The guide groove part 66 is different from the guide groove part 11 in that it has a variable width part 66a instead of the variable width part 11a. While the variable width portion 11a has inclined inner surfaces on both sides, the variable width portion 66a has a flat inner wall surface on one side. Only the inner wall on one side is inclined.

  The optical fiber holding member 30 described above has the piece holding portions 34A and 34B, but both the piece holding portions 34A and 34B have the protruding portion 34a.

  On the other hand, since the optical fiber holding member 65 has the piece holding part 67 and the piece holding part 34B, only one piece holding part 34B has the overhanging part 34a. In the case of the optical fiber holding member 65, the overhang width of the overhang portion 34a is d, which is equal to the entrance width d.

  Therefore, when the optical fiber holding member 65 is in the fully accommodated state, the inlets of the piece holding portions 34B and 67 are brought into close contact with each other, and the guide groove portion 11 is completely closed. With such an optical fiber holding member 65 as well as the optical fiber holding member 10, it is possible to remarkably reduce the trouble of holding the optical fiber and reduce the possibility of damage to the optical fiber member 6 and the like.

(Modification 6)
An optical fiber holding member 80 according to Modification 6 will be described with reference to FIGS. The optical fiber holding member 80 is different from the optical fiber holding member 10 in that the recesses 15 are not formed. That is, the optical fiber holding member 80 has base side surfaces 80c and 80d, but the recesses 15 and 15 are not formed at the boundary portions between the base side surfaces 80c and 80d.

  Since the optical fiber holding member 80 is not formed with the recesses 15 and 15, the load when the optical fiber holding member 80 is pushed into the housing 1 after the half-accommodating state is slightly increased as compared with the optical fiber holding member 10.

  However, since the optical fiber holding member 80 can hold the optical fiber member 6 and the tape-like optical fiber 7 in the same manner as the optical fiber holding member 10, the labor of holding the optical fiber can be remarkably reduced. The risk of damage such as 6 can be reduced.

(Modification 7)
An optical fiber holding member 90 according to Modification 7 will be described with reference to FIG. The optical fiber holding member 90 is different from the optical fiber holding member 50 in that it has piece holding portions 94A and 94B instead of the piece holding portions 14A and 14B.

  The piece holding portions 94A and 94B are different from the piece holding portions 14A and 14B in that they have an overhanging portion 94a instead of the overhanging portion 14a and in that they have an outer end surface 90a instead of the outer end surface 10a. doing.

  Compared with the overhanging portion 14a, the overhanging portion 94a is opposite to the lower end portion of the holding portion side surface 94c in that the holding portion side surface 94c is parallel to the base side surfaces 10c and 10d and is not formed in a reverse taper shape. The difference is that the tapered portion 94b is formed. Further, the outer end surface 90a is different from the outer end surface 10a in that it is formed in parallel with the bottom portion 10b.

  In the case of the optical fiber holding member 90, since the holding portion side surface 94c of the overhang portion 94a is not formed in a reverse taper shape, the load when trying to push into the housing 1 is slightly larger than that of the optical fiber holding member 10. There is a risk.

  However, since the reverse taper portion 94 b is formed at the lower end portion of the holding portion side surface 94 c, the force required to push the optical fiber holding member 90 into the housing 1 can be reduced.

  Such an optical fiber holding member 90 can also hold the optical fiber member 6 and the tape-like optical fiber 7 in the same manner as the optical fiber holding member 10, so that the labor of holding the optical fiber can be remarkably reduced. The risk of damage to the member 6 and the like can also be reduced.

(Modification 8)
With reference to FIG. 20, the optical fiber holding member 100 which concerns on the modification 8 is demonstrated. The optical fiber holding member 100 is different from the optical fiber holding member 50 in that it has piece holding portions 104A and 104B instead of the piece holding portions 14A and 14B.

  The piece holding portions 104A and 104B are different from the piece holding portions 14A and 14B in that they have an outer end surface 100a instead of the outer end surface 10a. The outer end surface 100a is different from the outer end surface 10a in that it is formed in parallel with the bottom portion 10b.

  Even with such an optical fiber holding member 100, the optical fiber member 6 and the tape-like optical fiber 7 can be held in the same manner as the optical fiber holding member 10, so that the labor of holding the optical fiber can be remarkably reduced. The risk of damage to the member 6 and the like can also be reduced.

(Modification 9)
An optical fiber holding member 110 according to Modification 9 will be described with reference to FIG. The optical fiber holding member 110 is different from the optical fiber holding member 50 in that it has a guide groove portion 61 instead of the guide groove portion 51 and a fiber reception portion 112 instead of the fiber reception portion 52.

  The guide groove portion 61 is formed substantially in an I shape like the guide groove portion 51. However, the guide groove 61 has a width d, is deeper than the guide groove 51, and reaches a position closer to the base 13 than the recess 15.

  The fiber receiver 112 is different from the fiber receiver 52 in that the width is increased to d. Since the optical fiber holding member 110 is formed with a guide groove 61 that is wider and deeper than the guide groove 51, it is suitable for holding the tape-shaped optical fiber member 7.

  Even with such an optical fiber holding member 100, the optical fiber member 6 and the tape-like optical fiber 7 can be held in the same manner as the optical fiber holding member 10, so that the labor of holding the optical fiber can be remarkably reduced. The risk of damage to the member 6 and the like can also be reduced.

(Modification 10)
An optical fiber holding member 120 according to Modification 10 will be described with reference to FIG. The optical fiber holding member 120 is different from the optical fiber holding member 10 in that it has a holding portion 44 instead of the holding portion 14.

  The holding part 44 has piece holding parts 44A and 44B. The piece holding portions 44A and 44B are different from the piece holding portions 14A and 14B in that they have an overhanging portion 44a. The overhanging portion 44a is different from the overhanging portion 14a in that it has an overhanging width d1 that is larger than the overhanging portion 14a.

  In the present embodiment, it is assumed that the overhang width d1 is 0.6 times as large as the entrance width d (that is, 0.6d). In the optical fiber holding member 120, since the extension widths of the piece holding portions 44A and 44B are both d1, the size obtained by adding both the extension widths is 1.2 times the entrance width d. Is also big. However, the overhang width d1 is smaller than the entrance width d.

  Like the optical fiber holding member 30, when the protruding width of the piece holding portions 34 </ b> A and 34 </ b> B is equal to the entrance width d, the groove closing force is strengthened more than the optical fiber holding member 10, so that the optical fiber member 6 and the like are strengthened. Can be retained.

  However, since the overhang width is large, the resistance when being accommodated in the housing 1 is increased, and there is a possibility that it is somewhat difficult to accommodate in the housing 1.

  In consideration of this point, the size obtained by adding the overhang widths of both the two piece holding portions as in the optical fiber holding member 120 is larger than the entrance width d, but is preferably smaller than the entrance width d. For example, the overhang width d1 can be 0.6 times the entrance width d, but may be 0.7 times and 0.8 times the entrance width d, and is not limited to 0.6 times. In this way, since the size obtained by adding the overhang widths of both of the two piece holding portions is larger than the entrance width d, the groove closing force can be strengthened more than the optical fiber holding member 10, but it is more tight than the optical fiber holding member 30. Since the protruding width is reduced, it is easier to accommodate the housing 1 than the optical fiber holding member 30.

  The above description is the description of the embodiment of the present invention, and does not limit the apparatus and method of the present invention, and various modifications can be easily implemented. In addition, an apparatus or method configured by appropriately combining components, functions, features, or method steps in each embodiment is also included in the present invention.

  By applying the present invention, the labor for holding the optical fiber in the housing can be reduced, and the possibility of damaging the optical fiber can be reduced. The present invention can be used for an optical fiber holding member and an optical module package using the same.

  DESCRIPTION OF SYMBOLS 1 ... Housing, 2 ... Cover, 5 ... Optical waveguide device, 5a ... Optical waveguide, 6 ... Optical fiber member, 7 ... Tape-shaped optical fiber member 10, 10A, 10B, 30, 40, 50, 60, 65, 80 , 90, 100, 110, 120 ... optical fiber holding member, 10c, 10d ... base side surface, 11, 41, 51, 66 ... guide groove part, 12, 52 ... fiber receiving part, 13 ... base part, 14 ... holding part, 14A , 14B, 34A, 34B, 44A, 44B, 67, 94A, 94B, 104A, 104B ... one-piece holding part, 14a, 34a, 44a ... projecting part, 14b ... holding part side face, 200 ... optical module package, d ... inlet Width, L: short width, L1: accommodation width, L2: holding portion width.

Claims (9)

An optical fiber holding member that holds the optical fiber in a housing that accommodates the optical waveguide device in which the optical waveguide is formed and the optical fiber connected to the optical waveguide device,
A base portion having an accommodation width corresponding to a short width inside the housing and a holding portion connected to the base portion are integrated, and the whole of the base portion and the holding portion is formed using an elastic member,
A guide groove that has a fiber receiving portion of a size that accommodates the optical fiber, and that penetrates from the outer end surface of the holding portion to the fiber receiving portion along the axial direction of the optical fiber;
When both side portions of the holding portion sandwiching the guide groove portion are each set as a piece holding portion, at least one of the piece holding portions is stretched to the outside of the side surface of the base portion arranged with the accommodation width of the base portion. Have a protruding part
In the state of no external force in which an external force is not applied to the holding part, the whole from the entrance of the guide groove part to the fiber receiving part is opened,
When the width of the guide groove portion along the accommodation width at the entrance is defined as the entrance width, the holding portion width along the accommodation width of the holding portion is larger than the accommodation width by the entrance width. Element.   The optical fiber holding member according to claim 1, wherein the entrance width is larger than a receiving portion width along the accommodation width of the fiber receiving portion.   3. The optical fiber holding device according to claim 1, wherein a concave portion along the axial direction of the optical fiber is formed at a boundary portion between the base side surface and a holding unit side surface connected to the base side surface of the piece holding unit. Element.   Both of the piece holding parts sandwiching the guide groove part in the holding part have the overhanging part, and the size of the overhanging width projecting outward from the base side surface of the both overhanging parts is equal. The optical fiber holding member according to any one of claims 1 to 3, wherein a size obtained by adding both overhang widths is equal to the entrance width.   Both of the piece holding parts sandwiching the guide groove part in the holding part have the overhanging part, and the size of the overhanging width of the both overhanging parts protruding outward from the base side surface is The optical fiber holding member according to claim 1, which is equal to the entrance width.   Both of the piece holding parts sandwiching the guide groove part in the holding part have the overhanging part, and the size of the overhanging width projecting outward from the base side surface of the both overhanging parts is equal. 4. The optical fiber holding member according to claim 1, wherein a size obtained by adding both of the overhang widths is larger than the entrance width, and the overhang width is smaller than the entrance width. .   The optical fiber holding member according to any one of claims 1 to 6, wherein a side surface of the holding portion connected to the side surface of the base portion of the piece holding portion is formed in a reverse taper shape that gradually projects outward as the distance from the base portion increases. An optical module in which an optical waveguide device in which an optical waveguide is formed and an optical fiber connected to the optical waveguide device are accommodated in a housing, and the optical fiber is held in the housing using an optical fiber holding member A package,
The optical fiber holding member is
A base portion having an accommodation width corresponding to a short width inside the housing and a holding portion connected to the base portion are integrated, and the whole of the base portion and the holding portion is formed using an elastic member,
A guide groove that has a fiber receiving portion of a size that accommodates the optical fiber, and that penetrates from the outer end surface of the holding portion to the fiber receiving portion along the axial direction of the optical fiber;
When both side portions of the holding portion sandwiching the guide groove portion are each set as a piece holding portion, at least one of the piece holding portions is stretched to the outside of the side surface of the base portion arranged with the accommodation width of the base portion. Have a protruding part
In the state of no external force in which an external force is not applied to the holding portion, the whole from the entrance of the guide groove portion to the fiber receiving portion is opened,
An optical module package in which the width of the holding portion along the accommodation width of the holding portion is larger than the accommodation width by at least the entrance width when the width along the accommodation width at the entrance of the guide groove is the entrance width. . The optical fiber holding members are disposed at both longitudinal ends of the housing;
The optical module package according to claim 8, wherein a portion of the optical fiber that is led out to the outside of the optical fiber holding member is fixed to the optical fiber holding member with an adhesive.

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