JP4166149B2 - Optical path conversion optical waveguide connector - Google Patents

Description

  The present invention relates to an optical connector, and more particularly, to an optical connector having an optical path conversion function that can be suitably used in an opto-electric hybrid board.

In recent years, application fields of optical communication and information processing technology for transmitting and receiving various types of information using optical signals instead of transmitting and receiving them have become widespread. Along with this, various multi-core optical fibers for transmitting optical signals have been developed and used, and connection between these multi-core optical fibers and between the optical fibers and various light emitting elements, light receiving elements, etc. Various optical connectors that can be easily separated have been developed and used.

  This type of optical connector often has to be considered in order to be able to transmit optical signals with as low transmission loss as possible compared to electrical connectors used for electrical signal connection and separation. For example, in an optical connector, optical fiber alignment is an important factor in achieving low loss transmission. This is particularly important in an optical connector using a multi-core optical fiber or a multi-core optical waveguide.

  As such a multi-fiber optical connector, conventionally, for example, those disclosed in JP-A-1-232307 and those disclosed in JP-A-2001-264587 have been proposed.

  An optical waveguide component / optical fiber coupling multi-fiber connector disclosed in Japanese Patent Laid-Open No. 1-232307 discloses a multi-core optical waveguide in a groove formed by hollowing out three surfaces of an upper surface and front and rear end surfaces in a central portion of a connector body. The optical waveguide board having the above is fixed with an adhesive, and two fitting pins are provided to project from the front and rear end faces of the connector body. The fitting pins of this multi-core connector can be fixed to a pin hole provided in the connector body with an adhesive. These fitting pins are fixed to the connector body in such a state that the mating optical plug is coupled to the mating optical plug and connected to the mating optical plug in a state where the mating pin can move freely with respect to the pin hole. Find the position (axial alignment position) where the optical transmission between the fiber and the multi-core optical waveguide of the connector body is performed with the lowest loss, and at that position, fit the fitting pin to the pin hole with adhesive It is done by fixing.

  A waveguide-type optical active element with a connector disclosed in Japanese Patent Laid-Open No. 2001-264587 has a configuration as schematically shown in FIGS. 10 and 11 of the accompanying drawings. FIG. 10 is a cross-sectional view seen from a direction perpendicular to the optical waveguide, and FIG. 11 is a side view seen from the connector side. As shown in these drawings, the waveguide-type active element with a connector connects a connector 8 having a guide pin hole 9 to one end of a multi-core optical waveguide 1 that converts the light transmission direction into a right-angle direction, A light emitting element or a light receiving element 6 is coupled to the other end. The mating optical connector can be coupled to the waveguide type optical active element with a connector such that the guide pin 9A of the mating optical connector is inserted into the guide pin hole 9 of the connector. In such a coupled state, the multi-core optical fiber connected to the counterpart optical connector and the multi-core optical waveguide 1 are designed so as to be aligned with each other.

JP-A-1-232307 Japanese Patent Laid-Open No. 2001-264587

  The above-mentioned multi-core connector for optical waveguide component / optical fiber coupling is such that the multi-core optical waveguide is of a straight type and only transmits light in a linear direction, and converts the light transmission direction. It is not a thing. Furthermore, in this connector, since there is no wall on the back side of the connector body, positioning in the front-rear direction is difficult when the optical waveguide is bonded and fixed to the connector body. In addition, since there is no wall on the back side of the connector body and the optical waveguide is exposed, the optical waveguide may be damaged when the connectors are connected and fixed with clips or the like, which is difficult to handle. .

  On the other hand, the above-described waveguide-type optical active element with a connector has a multi-core waveguide 1 that can convert the light transmission direction into a right-angle direction. However, the structure is housed in the connector, but this structure has the following problems.

  First, since most of the optical waveguide 1 is exposed, it is difficult to handle. In particular, since there is no wall behind the connector main body 8 and the optical waveguide 1 is exposed, the optical waveguide 1 may be damaged when the connectors are connected and fixed with clips or the like. Therefore, handling is difficult.

  Secondly, since there is no wall on the back side of the connector body 8, positioning in the front-rear direction cannot be performed during alignment.

  Furthermore, in each of the above-described prior arts, there are the following problems with respect to the adhesive fixing of the optical waveguide.

  First, the adhesive may spread in the gap between the optical waveguide and the connector body, and the leakage or shortage of the adhesive in the adhesive fixing is likely to occur. If it leaks and adheres to the front surface of the waveguide, optical performance may not be achieved.

  Secondly, in the above-described waveguide-type optical active device with a connector, the optical waveguide 1 is surrounded by the connector main body 8 on both the upper, lower, left and right sides, so that the adhesive portion between the optical waveguide 1 and the connector main body 8 can be irradiated with UV. Have difficulty. Accordingly, the active alignment cannot be temporarily fixed with the UV curable adhesive and then completely fixed with the thermosetting adhesive to obtain sufficient heat resistance.

Third, since the waveguide-type optical active element with a connector described above has a structure in which the connector main body 8 is vertically aligned, it is difficult to obtain the dimensional accuracy of the guide pin hole 9.
Fourth, it is costly when an exterior for protecting the exposed optical waveguide is required.

  In recent years, in various optical information processing circuits and the like, there is a need to arrange circuit components more efficiently and to make the size of the entire system compact. Therefore, if the optical transmission is made only in the linear direction within the board and between the boards, such a need cannot be met, and the optical transmission direction can be changed not only in the perpendicular direction but also in an arbitrary direction. Demand for such multi-fiber optical connectors is increasing. Of course, the efficiency of optical transmission within and between boards must be as high as possible. In particular, in the field of opto-electric hybrid mounting, the conventional multi-fiber optical connector as described above cannot sufficiently meet such a demand.

  Accordingly, an object of the present invention is to provide an optical path conversion optical waveguide connector that is easy to handle, can be connected with a multi-core optical fiber, can be easily connected with low loss, and has sufficient heat resistance. is there.

According to the present invention, in an optical waveguide mounting connector that can be connected to a multi-core optical fiber in a non-aligned manner, a connector body having an optical waveguide receiving space, and an optical path conversion optical waveguide mounted in the optical waveguide receiving space includes bets, said optical waveguide receiving voids state, and are not formed by cutting out only the lower surface and the front end surface of the connector body, the bottom wall of the optical waveguide receiving cavity, the optical path converting optical wave There is provided an optical path conversion optical waveguide connector characterized in that an adhesive reservoir for attaching and fixing a waveguide to the connector body is formed .

According to one embodiment of the present invention, the optical path converting optical waveguide is perpendicular conversion waveguide.

  According to still another embodiment of the present invention, the optical path conversion optical waveguide is a 180 degree optical path conversion optical waveguide.

  According to still another embodiment of the present invention, the adhesive reservoir is a shallow recess serving as a temporary fixing adhesive reservoir, and a complete fixing adhesive is disposed on a peripheral wall of the optical waveguide receiving cavity. A longitudinal groove providing an inlet and an air hole around the adhesive for complete fixing are formed.

  According to yet another embodiment of the present invention, the central portion of the shallow recess is provided with an island-like temporary fixing adhesive application portion having a shallower depth than the shallow recess, A groove-like adhesive reservoir is left around the temporary fixing adhesive application portion.

  According to still another embodiment of the present invention, the temporary fixing adhesive applied to the shallow recess is a UV adhesive, and the complete fixing adhesive injected into the complete fixing adhesive inlet The agent is a thermosetting adhesive.

  According to still another embodiment of the present invention, the adhesive reservoir is a shallow recess serving as an adhesive reservoir for fixing, and a fixing adhesive inlet is provided on a peripheral wall of the optical waveguide receiving cavity. Are formed, and a fixing adhesive surrounding air hole is formed.

  According to still another embodiment of the present invention, a leg that fills a difference in height between the lower surface of the rear end portion of the connector main body and the lower surface of the front portion on the lower surface of the front portion of the connector main body. Is provided.

  According to still another embodiment of the present invention, a recess for wiring escape is provided on the lower surface of the rear end portion of the connector main body.

  According to still another embodiment of the present invention, a light emitting element or a light receiving element is mounted on the optical path converting optical waveguide.

  Next, based on an accompanying drawing, the present invention is explained in detail about an embodiment and an example of the present invention.

  FIG. 1 is an external perspective view of an optical path conversion optical waveguide connector as one embodiment of the present invention. As shown in FIG. 1, the optical path converting optical waveguide connector of this embodiment includes a connector main body 10 formed of a plastic material or the like, and a right angle converting optical waveguide 20 attached to the connector main body 10. A fitting pin 30 to be inserted into a pin hole of a counterpart optical plug (not shown) is provided at the tip of the connector body 10. These fitting pins 30 may be separately formed of a metal material and may be inserted and fixed into the pin insertion holes of the resin-molded connector main body 10 or may be integrally formed when the connector main body 10 is resin-molded. You may make it attach to 10 and fix. In addition, although the example in which the centerless connection between the connector main body and the counterpart optical plug is performed via the fitting pin has been shown, the fitting pin is not necessarily used.

  2 is a perspective view showing the detailed structure of the connector main body 10 of the optical path converting optical waveguide connector of FIG. 1 with the lower surface side facing up, and FIG. 3 is a right angle converting optical waveguide of the optical path converting optical waveguide connector of FIG. It is the perspective view seen from the lower surface side of 20. FIG. 4 is a cross-sectional view of the connector main body of FIG. 2 taken along line AA, and FIG. 5 is a cross-sectional view of the connector main body of FIG. 2 taken along line BB. Hereinafter, the detailed structure of the connector main body 10 and the right angle conversion optical waveguide 20 will be described with reference to these drawings.

  First, the detailed structure of the connector main body 10 will be described. As shown in FIG. 2, the connector main body 10 is for receiving a right angle conversion optical waveguide 20 formed by hollowing out two surfaces of a lower surface and a front end surface. An optical waveguide receiving space 11 is provided. Further, the connector main body 10 is provided with a fitting pin hole 12 for inserting the fitting pin 30 into the front end surface on the left and right. Furthermore, board temporary fixing pin holes 13 are provided on the left and right sides of the rear end of the connector body 10.

  As well shown in FIGS. 1 and 2, in this embodiment, the thickness of the front portion of the connector body 10 where the optical waveguide receiving space 11 is provided is such that the board temporary fixing pin hole 13 of the connector body 10 is Leg portions 14 are formed on both sides of the optical waveguide receiving space 11 on the lower surface of the front portion of the connector main body 10 so as to be thinner than the thickness of the rear end portion provided. These leg portions 14 may be integrally formed with the connector main body 10. These leg portions 14 are configured to fill a difference in height between the lower surface of the rear end portion of the connector main body 10 and the lower surface of the front portion of the connector main body. Providing such a leg portion 14 makes it possible to adjust the distance between the substrate and the optical waveguide, thereby preventing the light receiving / emitting element mounted on the connector from coming into contact with the substrate and being destroyed.

  Furthermore, a recess 15 for escaping the wiring is provided on the lower surface of the rear end portion of the connector body 10. The recess 15 is for escaping the wiring for driving the light receiving and emitting element. If there is no such recess, the connector and the wiring come into contact with each other, causing damage to the wiring and receiving / receiving. There is a possibility of adversely affecting the characteristics of the light emitting element.

  A temporary fixing adhesive for temporarily fixing the right-angle conversion optical waveguide 20 is applied to the center of the front end portion of the bottom wall of the optical waveguide receiving space 11 so that the applied adhesive does not spread to unnecessary portions. A shallow recess 11A is formed as an adhesive reservoir for temporarily fixing, and a complete fixing adhesive is injected into the rear end wall portion of the peripheral wall portion of the optical waveguide receiving cavity 11 A relatively large vertical groove 11B for creating a completely fixing adhesive injection port is formed, and the left and right wall portions are relatively provided to provide air holes for the completely fixing adhesive around two locations respectively. A small vertical groove 11C is formed.

  Next, the detailed structure of the right-angle conversion optical waveguide 20 will be described. As shown in FIG. 3, in this embodiment, the right-angle conversion optical waveguide 20 is a waveguide main body formed of a plastic material or the like. 21. A multi-core optical waveguide is embedded in the waveguide body 21 by integral molding. One end 22 </ b> A of the multi-core optical waveguide is exposed on the lower surface side of the waveguide body 21, and the other end 22 </ b> B of the multi-core optical waveguide is exposed on the front end face of the waveguide body 21. Therefore, the optical waveguide 20 in this embodiment emits light incident from the lower surface side from the front end surface side, and conversely, emits light incident from the front end surface side from the lower surface side. A right-angle conversion type that converts the direction of optical transmission to a right-angle direction. Further, in this embodiment, as shown in FIG. 3, a surface emitting laser 23 called VCSEL is disposed at a position facing one end 22A of the multi-core optical waveguide. In the external perspective view of FIG. 1, the surface emitting laser 23 is shown separated from the lower surface of the right angle conversion optical waveguide 20. In the present invention, not only such a surface emitting laser but also various other light emitting elements can be applied, or various light receiving elements can be used instead of the light emitting elements.

  Next, the assembly procedure of the optical path conversion optical waveguide connector of the embodiment having the above-described configuration will be described in detail. The right angle conversion optical waveguide 20 is attached and fixed in the optical waveguide receiving space 11 of the connector main body 10. First, a temporary fixing adhesive, for example, UV bonding, is provided in a shallow recess 11A as a temporary fixing adhesive reservoir. After applying an appropriate amount of the agent, the right angle conversion optical waveguide 20 is inserted into the optical waveguide receiving space 11 so that the upper surface side of the right angle conversion optical waveguide 20 comes to the bottom wall side of the space 11. To do.

In this state, the mating optical plug is coupled through the fitting pin 30 provided in the connector main body 10, and active alignment with the mating optical plug is performed. That is, the position of the right-angle conversion optical waveguide 20 where the optical power transmitted through the right-angle conversion optical waveguide 20 to the multi-core optical fiber connected to the counterpart optical plug is maximized is found. Thus, when the position of the right-angle conversion optical waveguide 20 through which light passes most is found, the adhesive is cured by irradiating the UV adhesive to the UV adhesive at that position, and the right-angle conversion optical waveguide 20 is brought to that position. Temporarily fix.

  Next, an appropriate amount of a complete fixing adhesive, for example, a thermosetting adhesive, is injected from the complete fixing adhesive injection port provided by the vertical groove 11B, and this thermosetting adhesive is used to form air holes in the vertical groove 11C. The thermosetting adhesive is cured by applying heat to the thermosetting adhesive when it has sufficiently penetrated between the inner wall of the optical waveguide receiving space 11 and the peripheral wall of the right angle conversion optical waveguide 20 due to the action. By doing so, the right-angle conversion optical waveguide 20 is completely fixed in the optical waveguide receiving space 11.

  Thus, by providing the complete fixing process using the thermosetting adhesive, the environmental resistance can be strengthened, for example, the heat resistance in the board soldering process can be obtained.

  6 is a view similar to FIG. 2 showing a modification of the embodiment described with reference to FIGS. This modification is the same as the above-described embodiment except for the following points. In the above-described embodiment, the temporary fixing adhesive reservoir for applying the temporary fixing adhesive for temporarily fixing the right angle conversion optical waveguide 20 to the center of the front end portion of the bottom wall of the optical waveguide receiving space 11. In the modification of FIG. 6, in the modification of FIG. 6, an island-like temporary fixing having a shallower depth than the shallow recess 11A as the adhesive reservoir is provided at the center of the shallow recess 11A. An adhesive application portion 11A ′ is provided. Therefore, in this modification, the recess 11A left around the island-shaped temporary fixing adhesive application portion 11A ′ provides an adhesive reservoir in the form of an annular groove. With such a structure, the adhesive applied to the island-like temporary fixing adhesive application portion 11A ′, which is shallower than the adhesive reservoir, is surely in contact with the optical waveguide, while the excess adhesive is not It flows into the adhesive reservoir 11A, which is a surrounding annular groove, but it can be prevented from spreading beyond the annular groove to an extra portion. Therefore, it is easy to control the amount of adhesive, and it is possible to perform adhesive fixing with higher accuracy. In FIG. 6, the adhesive reservoir 11 </ b> A is an annular groove, but is not necessarily annular.

  In the above-described embodiment, active alignment is performed when the optical path conversion waveguide is attached and fixed to the connector body, but the present invention is not limited to this. For example, if the connector main body and the optical path conversion waveguide are manufactured with high accuracy, a passive alignment in which active alignment is not performed when the optical path conversion waveguide is attached and fixed to the connector main body can be used. Next, an embodiment of an optical path conversion optical waveguide connector using such passive alignment will be described.

  FIG. 7 is a view similar to FIG. 2 showing a connector main body of an optical path conversion optical waveguide connector as an embodiment by passive alignment, and FIG. 8 is a cross-sectional view of the connector main body of FIG. The fitting pins, right-angle conversion optical waveguides, and the like that are assembled to the connector main body may be the same as those in the embodiments described above with reference to FIGS. 1 to 5 and will not be described again here.

  As well shown in FIG. 7, the connector main body 40 is provided with an optical waveguide receiving space 41 for receiving a right angle conversion optical waveguide formed by hollowing out two surfaces of the lower surface and the front end surface. Further, the connector main body 40 is provided with a fitting pin hole 42 for inserting a fitting pin into the front end surface on the left and right. Furthermore, board temporary fixing pin holes 43 are provided on the left and right sides of the rear end portion of the connector body 40.

  In the center of the front end portion of the bottom wall of the optical waveguide receiving space 41, a shallow recess 41A is formed as a fixing adhesive reservoir for applying a fixing adhesive for fixing the right angle conversion optical waveguide. A vertical groove 41B is formed in the rear end wall portion of the optical waveguide receiving space 41 to create a fixing adhesive injection port for injecting the fixing adhesive. Further, an air escape hole 41C penetrating from the bottom wall to the upper surface of the connector main body 40 is formed on the front end side of the shallow recess 41A as a fixing adhesive reservoir. The air escape hole 41C acts so that the fixing adhesive injected from the fixing adhesive injection port provided by the vertical groove 41B can flow along the bottom wall of the shallow recess 41A as will be described later. Is.

Next, the assembly procedure of the optical path conversion optical waveguide connector of the embodiment having the above-described configuration will be described in detail. A right-angle conversion optical waveguide such as the right-angle conversion optical waveguide 20 as described above is attached and fixed in the optical waveguide receiving space 41 of the connector body 40. First, the right-angle conversion optical waveguide to be attached and fixed is designated as an optical waveguide. It is arranged at a predetermined position in the receiving space 41. In the connector of this embodiment, the dimensions of each part of the connector main body 40 and the right-angle conversion optical waveguide are manufactured with high accuracy. Therefore, the right-angle conversion optical waveguide is simply disposed at a predetermined position in the optical waveguide receiving space 41. , passive Arai down placement is made. That is, the optical power transmitted to the multi-core optical fiber connected to the counterpart optical plug connected through the fitting pin of the connector main body 40 through the right angle conversion optical waveguide arranged at the predetermined position is maximized. It is designed to be.

  Next, an appropriate amount of the fixing adhesive is injected from the fixing adhesive injection port provided by the vertical groove 41B, and this fixing adhesive acts on the inner wall of the optical waveguide receiving space 41 by the action of the air escape hole 41C. The right angle conversion optical waveguide is fixed in a predetermined position with respect to the connector main body 40 by sufficiently intruding between the right angle conversion optical waveguide and the bottom surface of the right angle conversion optical waveguide.

  The reason why the adhesive reservoir is provided in the above-described embodiment is that, if such an adhesive reservoir is not provided, the UV adhesive spreads in the gap between the optical waveguide and the connector housing when fixing in the active alignment. This is because even parts that do not need to be bonded are bonded to each other, and there is a possibility of adversely affecting the optical characteristics such as leakage to the optical surface and axis misalignment during UV curing. Further, since the adhesive spreads, problems such as difficulty in controlling the amount of the adhesive appear.

  Furthermore, in the above-described embodiment, the reason why the vertical groove for providing the completely fixing adhesive inlet and the air hole around the completely fixing adhesive is provided is that the temporary alignment is performed by active alignment. This is because it is possible to perform complete fixation after the operation. In addition, even when passive alignment is performed, since the adhesive uniformly turns into the gap between the optical waveguide and the connector housing, stable adhesion can be obtained. Furthermore, when air holes are provided on the back surface, it is possible to confirm that the adhesive has flowed to the back due to the adhesive coming out of the air holes, and the amount of adhesive can be controlled. .

  The optical connector of the present invention is most suitable for mounting an optical path conversion optical waveguide whose optical path is converted at a right angle between the front end face direction of the connector and the bottom surface direction. Is not necessarily limited to this. For example, FIG. 9 is a view similar to FIG. 1 illustrating a connector on which a 180 ° optical path conversion optical waveguide is mounted. In the embodiment of FIG. 9, a 180 ° optical path conversion optical waveguide 20 ′ is attached and fixed in the optical waveguide receiving space of the connector body 10. The 180 ° optical path conversion optical waveguide 20 ′ is an optical waveguide in which two optical waveguides having a structure like the above-described right-angle conversion optical waveguide 20 are superposed in opposite directions, and is perpendicular to the rear end. The reflection is performed twice, so that the optical path can be converted by 180 °. Therefore, in the connector of FIG. 9, one end 22A ′ of the multi-core optical waveguide embedded in the 180 ° optical path conversion optical waveguide 20 ′ is exposed at a lower position on the front end face side of the connector body 10, and this multi-core The other end 22 </ b> B ′ of the optical waveguide is exposed at an upper position on the front end face side of the connector main body 10. Therefore, the optical waveguide 20 'in this embodiment emits light incident from the lower position on the front end face side from the upper position on the front end face side, and conversely, the light incident from the upper position on the front end face side. The light is emitted from the lower position.

  As an application field of the present invention, it can be applied not only to the field of optical connectors as in the above-described embodiments, but also to various other fields. In particular, one example is the field of opto-electric hybrid mounting. It can be preferably applied.

It is possible to provide an optical path conversion optical waveguide connector suitable for opto-electric hybrid mounting that can be easily handled and can be optically connected with a multi-core optical fiber with low alignment and low loss.
In addition, sufficient heat resistance can be ensured in the environment where the optical path conversion optical waveguide connector is used.

  Furthermore, it is possible to provide a connector capable of performing not only a right angle conversion but also an optical path conversion at an arbitrary angle only by selecting a type of the optical path conversion optical waveguide to be attached and fixed to the connector main body.

1 is an external perspective view of an optical path conversion optical waveguide connector as one embodiment of the present invention. FIG. 2 is a perspective view showing the detailed structure of the connector main body of the optical path converting optical waveguide connector of FIG. It is the perspective view seen from the lower surface side of the right angle conversion optical waveguide of the optical path conversion optical waveguide connector of FIG. FIG. 3 is a cross-sectional view of the connector main body of FIG. 2 taken along line AA. FIG. 3 is a cross-sectional view of the connector main body of FIG. 2 taken along the line BB. FIG. 6 is a view similar to FIG. 2 showing a modification of the optical path conversion optical waveguide connector of FIG. 1. FIG. 3 is a view similar to FIG. 2 showing a connector main body of an optical path conversion optical waveguide connector as an embodiment by passive alignment according to the present invention. FIG. 7 is a cross-sectional view of the connector main body of FIG. 6 taken along line AA. It is a figure similar to FIG. 1 which shows another Example of this invention. It is sectional drawing seen from the direction perpendicular | vertical to an optical waveguide, in order to show the structure of the conventional waveguide type optical active element with a connector. It is the side view seen from the connector side, in order to show the structure of the waveguide type optical active element with a connector of FIG.

Explanation of symbols

10 Connector body 11 Optical waveguide receiving space 11A Shallow recess (adhesive reservoir for temporary fixing)
11B Vertical groove (adhesive inlet for complete fixing)
11C Longitudinal groove (Air hole around adhesive for complete fixing)
12 fitting pin hole 13 substrate temporary fixing pin hole 20 right angle conversion optical waveguide 21 waveguide main body 22A one end 22B of multi-core optical waveguide 23 other end 23 of multi-core optical waveguide surface emitting laser 30 fitting pin 40 connector main body 41 optical waveguide Receiving space 41A Shallow recess (fixing adhesive pool)
41B Longitudinal groove (adhesive inlet for fixing)
41C Air escape hole 42 Fitting pin hole 43 Temporary fixing pin hole

Claims (10)

  In an optical waveguide mounted connector that can be connected to a multi-core optical fiber in a non-aligned manner, the connector main body has an optical waveguide receiving space, and an optical path conversion optical waveguide mounted in the optical waveguide receiving space. The optical waveguide receiving space is formed by hollowing out only the lower surface and the front end surface of the connector body, and the optical path converting optical waveguide is attached to the connector body on the bottom wall of the optical waveguide receiving space. An optical path converting optical waveguide connector, wherein an adhesive reservoir for fixing is formed.   The optical path conversion optical waveguide connector according to claim 1, wherein the optical path conversion optical waveguide is a right angle conversion optical waveguide.   The optical path conversion optical waveguide connector according to claim 1, wherein the optical path conversion optical waveguide is a 180-degree optical path conversion optical waveguide.   The adhesive reservoir is a shallow recess serving as an adhesive reservoir for temporary fixing, and a peripheral groove around the optical waveguide receiving cavity is provided with a longitudinal groove that provides an adhesive inlet for complete fixing, and around the adhesive for complete fixing. The optical path conversion optical waveguide connector according to any one of claims 1 to 3, wherein an air hole is formed.   In the central portion of the shallow recess, an island-shaped temporary fixing adhesive application portion having a shallower depth than the shallow recess is provided, and a groove is formed around the temporary fixing adhesive application portion. The optical path conversion optical waveguide connector according to claim 4, wherein an adhesive reservoir in the form of is left.   The temporary fixing adhesive applied to the shallow recess is a UV adhesive, and the complete fixing adhesive injected into the complete fixing adhesive inlet is a thermosetting adhesive. 5. An optical path converting optical waveguide connector according to 5.   The adhesive reservoir is a shallow recess as an adhesive reservoir for fixing, and a vertical groove and an air hole around the adhesive for fixing are provided on a peripheral wall of the optical waveguide receiving cavity. The optical path changing optical waveguide connector according to claim 1, 2 or 3. The lower surface of the front portion of the connector body, one from claim 1 to the legs, such as to fill the difference in height between the lower surface of the lower surface and said front portion of the rear end portion of the connector body is provided with 7 The optical path conversion optical waveguide connector according to any one of the above. The optical path conversion optical waveguide connector according to any one of claims 1 to 8 , wherein a recess for wiring escape is provided on a lower surface of a rear end portion of the connector main body. The optical path conversion optical waveguide connector according to any one of claims 1 to 9 , wherein a light emitting element or a light receiving element is mounted on the optical path conversion optical waveguide.

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