JPH06508940A - Optical waveguide connecting member - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Optical waveguide connecting member The present invention relates to a connecting member of an optical waveguide, which also includes a) arranged in the same plane, and within the connecting member; b) at least three optical waveguide guiding channels terminating in the first and second of these; and a second guide channel are spaced apart from each other and have their ends spaced apart. c) a beam refractive reflector is provided in said gap area, and d) The configuration and arrangement of this reflector makes it possible for the reflector to be incident on the optical waveguide received in the first guiding channel is propagated into an optical waveguide that is received in a second guiding channel while the light The light entering the optical waveguide received by the guiding channel is reflected by the beam refracting reflector. e) an arrangement of one or more other guiding channels; at least a majority of the light reflected by the reflector is f) an end of the optical waveguide which is received in the inner channel; The coupling member forms a single associated component with the guide channel and the beam refractive reflector. Concerning the type of thing that is. Optical phino that uses light guidance within an optical waveguide <- Sensors are becoming increasingly important. Because this kind of sensor Compared to signal-based sensors, they are, for example, insensitive to interfering electromagnetic fields and have little attenuation. This is because it has advantages such as being transparent and having a high propagation rate. In addition, this This type of sensor has the advantage that the transmitting and receiving member can be placed relatively far from the sensor head body. It also has points.

Information between transmitter, sensor and receiver with this fiber optic sensor system Transmission then involves optical waveguide fibers connecting the transmitter with the sensor and the sensor with the receiver. It is done through a server. In that case, one of the fibers (transmitting and receiving fiber) At the same time, it takes on the function of returning the light from the transmitter to the sensor and the sensor signal to the receiver. transmitter and the receiver are not the same, so the light emitted back from the sensor head goes to the receiver. At least a portion must be branched or propagated into the leading fiber.

This measure presupposes a suitable branching structure. That is, on the one hand, the corresponding The light from the transmitter is connected to the transmitting and receiving fibers with as little loss as possible, and on the other hand, the The optical signal returned from the sensor is taken into the receiver from the fiber as much as possible. It is a branch structure.

Another use for branched structures of this type is in glass fiber data networks. In this data network , part of the optical signal from a continuous data bus is branched from multiple different connection points, In this case, where several connected consumers have to be supplied, the type of connecting element is The principle is as follows: a) Classic beam splitter with partially transparent mirror b) Fibers suitably polished and spliced for durability. C) Means incorporating an optical system Turnout manufactured by. In this case, the branches are those of closely spaced waveguide channels. Based on physical and optical connections (these branching forms and their manufacturing methods are all different) This system has disadvantages that make it difficult to use in optical fiber systems. It makes the stem expensive. Those shortcomings are as follows: Extremely precise joining of small parts is required (model a); - There is a limit to the possibility of miniatureization (models a and b) - Limited suitability for multimode technology (Type C) - unsuitable or difficult to adapt to integration into electronic integrated systems;

The fiber optic coupler known from DE 3315861 A1 consists of a single associated component. It consists of This component has an emitter chamber and a detector chamber in the same plane. A waveguide is placed in front of the waveguide. formed by the end portion of the waveguide and the emitter chamber A classical beam splitter is provided within the air gap. This beam splitter includes a slope formed on the component and a dielectric coating provided on the slope. It consists of The optical waveguide, emitter chamber, and detector chamber are at an angle to each other. It is arranged as follows. From the emitter chamber, another optical waveguide is connected to the beam splitter. It can be made to extend in the direction.

When using classical beam splitters, relatively high losses occur. beam sp It is therefore not possible to place an additional optical waveguide between the liter and the detector. I can't. Rather, use a detector chamber with highly active surfaces or a lens system. must be used to ensure that sufficient intensity of light reaches the detector chamber.

Furthermore, the components must be made of transparent material. beam splitter Due to the use of There may be multiple reflections at the phase boundary that are backed up by the detector. Detected as ground light. At least the detector is integrated directly into the component. miniaturization and the use of remotely located detectors. It's impossible.

Publication entitled “Plastic Fiber Couplers Using Simple Polishing Techniques” (1 ECO4, an international conference on optics and optical technology held in The Hague in 1991. In a lecture given at o Document publications are published in ECO4 Conference Minutes 5PIE Vol. 1504. ), three optical waveguides are arranged in a figure 7 shape in the same plane, and the optical waveguide The intensity of the light propagated by one of the two optical waveguides is divided by half each into the remaining two optical waveguides. It is known to distribute to For this purpose, optical waveguides that propagate the arriving light The ends of the channels are V-shaped. The other two optical waveguides are perpendicular to their axes. Polished corners. The degree to which the V-shaped processed surfaces of the first optical waveguide mutually form or remain The angle formed by the two optical waveguides is such that the optical loss is minimized when dividing the light intensity. It is selected so that Furthermore, in order to ensure that the optical waveguide has a durable structure, a V-shaped It is made to be fixed between two plates with shaped cuts.

However, this type of coupler is suitable for relatively thick optical waveguides made of plastics ( This cannot be realized except in cases where the diameter is approximately 1 mm in diameter. The disadvantage of this format is that the arriving light The propagating optical waveguide must be processed, and the remaining two optical waveguides are In order to prevent light intensity loss, the first optical waveguide must be aligned with each processed surface. Therefore, replacement of the first optical waveguide is only possible under certain conditions.

Publication entitled “Characterization of micro-optical components produced by X-ray plano-intaglio printing” (Speech given at the aforementioned international conference. Authors: J. Oettert and J. Mohr Publication in o document is based on ECO4 meeting minutes 5PIE Vol, 1506) , simple optical waveguide coupling systems such as forked waveguides or Y-coupler It is publicly known. These coupling systems are produced by X-ray plano-intaglio printing.

The optical waveguide coupler known from said publication comprises a guide channel receiving two optical waveguides. It consists of a microstructure with flannel. In that case, the optical waveguide is on a straight line. arranged and separated by spacing areas. According to the said publication, in addition , more complex connected structures can also be produced by X-ray planar intaglio printing; In the optical structure, light arriving from a first optical waveguide is distributed to a plurality of other optical waveguides. . In the embodiment mentioned as an example, the light from the first optical waveguide is directed to the east of the optical waveguide. In that case, 50% goes to the center optical waveguide and 50% goes to the peripheral optical waveguide. The intensity of light is distributed at a rate of 1 to 2% for each.

The publication finally describes a Brehner-type wavelength demultiplexer with an autofocusing catadioptric grating. Lexa is listed. This demultiplexer is equipped with a thin film waveguide. Ru.

For the fabrication of this demultiplexer and thin film waveguide, please refer to The publication entitled "Fundamentals of the production of gratings by X-ray plano-intaglio printing" (authors: B, And erer, f, Ehrfeldj, Mohr, Karlsruhe Nuclear Research Center This is detailed in the report KFK4702 (published in the March 1990 issue).

Finally, the waveguide fiber is placed in a coupling member known from DE 39 39 112 A1. An example is a device that makes a decision. This device consists of a holding plate and a single unit that receives the waveguide fiber. a number or plurality of guide channels and a spring member that presses the fiber within the guide channels; , consisting of a lid above a retaining plate. The distribution of light intensity has not been addressed. do not have.

The problem underlying the present invention is that conventional optical waveguides that are not preformed, especially multilayer An object of the present invention is to provide a coupling member suitable for fibers of various modes. Furthermore, another issue is Eliminates the need for complete new adjustments when replacing individual or all fibers. The purpose is to do so. Furthermore, another problem is that connecting members can be made into miniatures. In other words, the guide channel and the beam brick or For individual structures such as beam refractive reflectors, connecting members with dimensions in the sub-millimeter range are available. It is about making it possible. This connection member is a single mechanically safe component. and can be integrated into electronic systems. for fiber optic systems The information transmission mentioned at the beginning between transmitters, sensors, and receivers can be performed using these connecting members. According to the present invention, the above-mentioned problem is achieved as stated in claim 1. The problem was solved by the above-mentioned connecting member. Claims 2 and below describe other aspects of the present invention. The implementation format is shown.

The connecting member according to the invention comprises at least three guiding channels arranged in the same plane. these channels terminate within the coupling member and are capable of receiving optical waveguides. can. The first and second guide channels are located close to each other in a straight line. approach Positioned as follows means that the guiding channels are mutually aligned by at most one-half of the optical waveguide core diameter. the mutual angle caused by the optical waveguide numerical aperture used up to to be located in such a way that the means.

A beam refractive reflector is disposed between the ends of the first and second guide channels.

This arrangement forms an essential component of the coupling element according to the invention. this reflection The body is also constructed and arranged as follows. i.e. within the guidance channel. The light incident on the optical waveguide in the first guiding channel via the optical waveguide enters the second guiding channel. while being propagated to the optical waveguide in the second guiding channel. The light emitted from the beam is reflected by the beam refracting reflector.

One or more further guiding channels are arranged such that the light reflected by the reflector is guided through the guiding channels. The optical waveguide is arranged to be incident on one or more ends of the optical waveguide within the optical waveguide.

These guiding channels advantageously provide a guide channel that helps the optical waveguide maintain its fixed position. It has a topper. In one particularly advantageous embodiment, the reflector serves as a stop. I can stay.

The coupling element according to the invention comprises a guiding channel, a beam refraction and reflection path, and optionally a The stopper is integrated into a single component.

Also, these connecting members can be made of different materials.

Couplings with total internal reflection, especially for multimode fibers, are optically transparent. This can be achieved using plastic. The connecting member can also be made of homogeneous plastic or can also be constructed by a multilayer plastic system with a thin waveguide film. Ru. When the connecting member according to the invention is made of a light-reflecting material, the light waveguide that performs the reflection This makes it easier to fabricate fiber connection structures, especially multimode fiber connection structures. the In this case, the light-reflecting material is advantageously made of metal, but may also be made of metal, but may also be made of metal. It may also have a metal thin film. For example, plastics coated with metal Can be used. As for the metal, choose a material with as high a reflectance of light as possible. Must be.

The connecting member according to the invention has the advantage that, due to the divergence of the emitted light, as the length of the connecting member increases, , the intensity of the coupled light is reduced, so it is very compactly constructed and a single forming a block. This block has a guide channel and a field in the same plane. A holding part for an optical waveguide and a beam refraction reflector are formed by combining the parts. this reflection The body has a very compact shape and at the same time forms a stop for the optical waveguide.

The size of this coupling structure is advantageously in the sub-millimeter range, so that it can be compared with the optical waveguide. Multimode fibers can be used as such. Attaching the optical waveguide, No adjustment work is required when replacing optical waveguides of the same type. Because light guide The position of the wave path can be determined by moving the leading wave path all the way to the stopper in the connecting member. This is because it is logically determined.

The connecting member made of transparent plastic material has a phase boundary surface where total internal reflection takes place. This allows the light emitted from the optical waveguide to be split and transmitted to other optical waveguides. I can do it.

There are two possibilities for producing this connected structure: a) X-ray plano-intaglio printing and development of the plastic bonded to a suitable mechanically stable substrate. Consists of thin stick film or self-supporting plastic thick film without substrate be done. X-ray plano-intaglio printing uses a film structured in this way to print fine particles in the micrometer range. It has the characteristic that the partial structure can be left with a structural height of several hundred micrometers.

In that case, the resulting structure has very little unevenness. This manufacturing method , especially the plastic polymethyl methacrylate (PMMA).

b) X-ray plano-intaglio printing, development of the irradiated area, and coating of the resulting structure with nickel, etc. A mold for molding is made by plating with a suitable metal, and this mold is used as the desired material. It has a structure corresponding to the connecting member. This mold allows the well-known micro-typing technique to be , i.e. the secondary plastic structure is produced by either reaction molding, injection molding or stamping. A structure is produced. In the case of this method, the P used as the plastic in section a) In addition to MMA, a more thermally stable and optically transparent plastic, Tsuku, can be used. It can also be used.

In the case of a connecting member made of a material that reflects light, the reflection of light by this material is the bending of the light. Available from time to time. The coupling member is connected to only a portion of the end face of the fiber that carries the incoming light. If uncovered, light splitting is thereby effected.

By X-ray plano-intaglio printing and, in some cases, subsequent molding by plating. , four possibilities are available for manufacturing the connecting member using light-reflecting materials: a) plastic A primary structure consisting of a stick, in particular PMMA, is produced by X-ray plano-intaglio printing using a suitable machine. On a mechanically stable substrate or thicker self-supporting plastic layer The reflective wall of this secondary structure is formed on top of the By doing this, it becomes a mirror surface.

b) Place the negative of the connecting member on a good conductive substrate with the same (X-ray flat intaglio) Formed by printing. This mold is then filled with plating with a metal such as nickel. be done. Removing the molding plastic layer yields the desired metal structure. It will be done. Metal structures have the advantage of high heat resistance. A public service that selectively strips away one layer. In conjunction with the known sacrificial layer technology, the optical waveguide guiding channel holds the optical waveguide. A spring member may be provided for this purpose. Regarding the manufacture of this type of spring member, , is described in DE3939112A1 mentioned at the beginning.

c) By X-ray plano-intaglio printing, subsequent development of the irradiated area, and plating of the resulting structure Molding creates a mold for molding. This mold forms the complementary structure of the desired connecting member. have. Using this mold, known micro-molding methods such as reaction molding, injection molding, etc. The secondary plastic structure is obtained either by molding or stamping. these The structure is an exact copy of the primary structure produced by X-ray plano-intaglio printing. in this case Also, as mentioned in point a), the corresponding wall parts are subjected to a vapor deposition treatment. For this method In addition to P~iMA used as the plastic protective layer in section a), heat-resistant and more stable plastics can be used.

d) Complementary structures produced by metal molds by X-ray plano-intaglio printing is produced. The mold creates a complementary plastic structure, which The body is used for manufacturing metal connecting members by plating.

Since molding is carried out in the mass production process, the methods in C) and d) are different from the methods in other sections. It costs much less, and the product is also less expensive.

The invention will be explained in more detail below with reference to the drawings.

FIG. 1 is a diagram schematically showing the function of the connecting member of the present invention.

FIG. 2 is a perspective three-dimensional view showing the structure of the connecting member according to the present invention.

3 to 11 are cross sections of the transparent plastic connecting member.

12 to 16 are cross-sectional views of a connecting member made of a light-reflecting material. FIG. 1 shows a connecting member of the present invention. The functions of are shown schematically. The light emitted from the light source 5, that is, the transmitter, is transmitted through the optical waveguide. The light enters the connecting member 1 through the. The light passes through a beam refracting reflector 8 (schematically shown). and is propagated to the sensor 6 through another optical waveguide. Response light signal from sensor 6 returns. This signal is returned to the coupling member through the same optical waveguide. response light signal is reflected at the reflector and at least a large portion enters another optical waveguide. The optical waveguide connects the coupling member 1 to the detector 7. The detector receives a response optical signal. Figure 2 shows an embodiment of the connecting member of the present invention three-dimensionally. There is. The coupling member has a guiding channel in which the optical waveguides 3, 4 are arranged. Ru. One of the leading waveways has been omitted for clarity of illustration. This optical waveguide is shown in Figure 2. It looks like there is a person in the guide channel in the foreground, and there is a direct line along the axis of the guide waveway 3. placed on the line. The guide channel has a stopper 9 (stopper of the optical waveguide 4) at the end. (not visible in the figure) is provided. There is a beam bend between the image leading waveguides on a straight line. A folding reflector 8 is arranged.

FIG. 3 shows a connecting member made of optically transparent plastic. core and jacket A part of the light reflected to the left from the fiber 3 consisting of Reach Iba 2. The remaining part of the light passes through the beam refractive reflector 8. It hits the phase boundary surface 11, is totally reflected at the reflector 8, and is connected to the fiber 4. It will be done. The coupling coefficient, i.e. the proportion of light propagated from fiber 3 to fiber 4, is It can be changed depending on the size and position of the reflector 8.

An improved format is shown in FIG. In the case of the connecting member in Figure 3, the fiber 3 The light is returned at a small angle into the coupling member from and does not reflect and therefore disappears. This allows the fiber 4 to pass through the connecting member. For example, the intensity of the light directed to the detector is reduced.

This effect is prevented in the embodiment shown in FIG. In this form, the phase boundary surface 1 1 is tilted as follows. In other words, the maximum possible distance from the fiber 3 to the reflector 8 is Light incident at a large angle is tilted so that it satisfies the conditions for total internal reflection. centre In this case, the angle between the fiber 4 and the fiber 2 is such that the above-mentioned light enters the fiber at the maximum acceptance angle α. The angle is selected such that the beam is incident on the fiber 4. This results in For example, with a numerical aperture of 0.2 and a reflector made of PMMA, the coupling loss is reduced. In the case of a multimode fiber with red light, the prism angle β is It is small 50°. The angle α is then 10°.

In the embodiment shown in FIG. 5, the beam refracting reflector 8 is connected to the connecting member block. It is. Although this increases the mechanical strength of the connecting member, up to fiber 4 distance becomes longer.

A further embodiment is shown in FIG. Directly from fiber 2 via the connecting member suppresses the level of scattered light substantially caused by the light incident on the fiber 4. If necessary, another beam refracting reflector 8a is installed in front of the beam refracting reflector 8. can be placed. These two reflectors have a narrow air gap between both sides. The cap 12 is arranged so that the cap 12 is left behind. This arrangement allows the scattered light to be directed in other directions. Totally reflected.

In the embodiment shown in FIG. 7, the beam refracting reflector covers the entire end face of the fiber 3. It is expanding. In this format, the beam splitter 8, i.e. the reflector, is optically transparent. This is possible due to the There is no significant decrease in the intensity of light propagated to.

In a variant (not shown) of the embodiment shown in FIG. 7, the fiber 2 is tilted. This compensates for the refraction of the reflector and directs the light to the fiber 3 at the maximum receiving angle. It is made to fit and is injected.

In FIG. 8 an embodiment with an additional optical waveguide 13 is shown. The place for this arrangement In this case, the intensity of the light returning through the fiber 3 is distributed to the two optical waveguides 4.13.

For this purpose, the reflector is divided into two subareas 8'.

8' or at different angles.

Figure 9 shows an embodiment optimized for minimizing vertical divergence losses. Ru. In this case, the connecting member consists of a wave-guiding thin-film structure. This example is , produced by the X-ray plano-intaglio printing method according to the publication KFK4702 mentioned at the beginning. Wear. In that case, an X-ray sensitive protective layer is placed on the substrate 14 consisting of three individual layers. It will be done. The three individual layers are a base layer 15a, 16a, a core layer 15b, 16b1 and a power layer. Consists of 15c and 16c. The coupling member with the beam refractive reflector 15.16 is Therefore, it is composed of three layers. By doing so, the following effects can be obtained.

In other words, by guiding the light through the coupling member, the cylindrical shape of the transmission fiber Vertical dispersion losses caused by symmetry are significantly reduced. Leave a gap in the optical path By keeping it as short as possible, connection losses can be kept to a minimum. shorten the gap This can be achieved by configuring the reflector 15 in stages. Reflector 1 6 to optimize the intensity that must be propagated from the fiber to the fiber 3. If it does not occupy the entire end face of the fiber 3 and is arranged as in the case of FIG. The resulting gap (see numeral 10 in Figure 3) is completely configured as a waveguide structure. can do.

In the case of the embodiment shown in FIG. 10, the light from fiber 2 is directed toward fiber 3. It is propagated into the fiber 3 via the tapered waveguide layer 17. To do this As a result, the light is focused onto a narrow area on the end face of the fiber 3. This allows the fiber Most of the light from 2 is propagated into fiber 3. fiber 3 to fiber 4 The propagation of the light intensity is again via a beam refractive reflector 8 created in the waveguide layer. It is done as follows. Fibers 2 and 3 are shifted parallel to each other (as shown). is arranged, the reflector 8 is expanded as follows. That is, the reflector 8 covers most of the end face of fiber 3, thereby allowing the fiber 4 is expanded so that the intensity of the light propagated to 4 is clearly increased. Fa The total internal reflection of light when it passes from the fiber to the fiber 4 is due to the phase boundary surface 11 of the reflector 8. It is held in the corner.

A similar embodiment is shown in FIG. 11, but for this type the waveguide layer , which is close to the fiber 2, is configured as a lens 18. This lens 18 The light emitted from fiber 2 is then focused onto a small area of fiber 3. be done. As a result, a greater proportion of the light emitted from fiber 2 is transmitted to fiber 3. be transported. The propagation from fiber 3 to fiber 4 is caused by beam bending as in the case of FIG. This occurs at the phase boundary surface 11 of the folding reflector.

In one variation (not shown) of the embodiment of FIG. 11, FIGS. A connecting member according to the invention made of material is shown.

FIG. 12 shows three optical waveguides 2.3.4 consisting of a core and a jacket, and a connecting member. has been done. Part of the light that enters the coupling member from the fiber 3 and is reflected to the left is It passes through the gap 10 and reaches the fiber 2. The remaining part of the light is reflected by the beam refracting reflector 8. The light hits the incident surface 20, is reflected there, and enters the fiber 4. On the contrary, fiber 4 Alternatively, a portion of the light incident on the connecting member from the fiber 2 may also be partially transmitted through the gap 10 or the reflector. 8 into the fiber 3. On the other hand, between fiber 2 and fiber 4, Direct light exchange between them is not possible. Coupling factor -1, i.e. fiber 3 to fiber The proportion of light propagated to the fiber 2 is determined by the beam splitter 8, i.e. It can be changed depending on the size and position of the projectile. In addition to the reflector 8, the connecting member includes: Structures 21, 22, 23 provide guidance and accurate positioning of the fiber relative to the coupling member. prepared for the purpose.

Shown in FIG. 13 is an improved format. In the case of the connecting member in Figure 12, , the light that enters the coupling member from the fiber 3 at an extremely small angle enters the fiber 3 again. or reflected to its outer covering. This reduces the intensity of light to fiber 4. Ru. In the case of the embodiment of FIG. The light exiting at a large angle is selected so that it is reflected perpendicularly to the axis of the fiber 3. This prevents the strength from decreasing. Fiber 4 is in this case fiber 2, etc. The fiber is arranged at an angle with respect to the fiber 3, and as a result, the light enters the fiber 4 at the maximum acceptance angle. incident on . This reduces connection loss in the connection member. Other parts are It is similar to the format shown in FIG.

The arrangement according to FIG. 14 is such that the beam refractive reflector and the fiber guiding member It is characterized by the fact that it is formed. By doing this, the mechanical strength of the connecting member is increased. However, since the optical path from the reflector to fiber 4 becomes longer, dispersion loss occurs in the vertical direction. increases.

In the case of the connecting member shown in FIG. 0b. By doing this, the input from fiber 2 and fiber 3 is The light emitted from the fiber 3 and returning from the fiber 3 is transmitted not only to the fiber 2.4 but also to an additional fiber. It is also propagated to 13.

In the case of the connecting member shown in FIG. 16, the reflective surface 16 is curved. From now on, The light dispersively emitted from the fiber 3 is focused on the end face of the fiber 4, and the light inside the fiber 4 is The intensity of light at increases.

In addition, because the channel between fiber 2 and fiber 3 is configured to be tapered, , more light is propagated from fiber 2 to fiber 3.

The coupling member according to the invention has several advantages compared to known types of beam splitters. It has points. In other words, it can be configured compactly and can be made into a miniature. Ru. In particular, when this connecting member is manufactured using molding technology, mass-produced Can be manufactured at low cost. Thereby, the reproducibility of the connection characteristics is also surely improved. optical waveguide There is no need for adjustment at all when installing the device. Even if it is necessary, it is very little. Furthermore, This coupling member enables the coupling of releasable waveguide fibers. Also, This connecting member can be used in a wide wavelength range. This is because light reflective materials are used. This is because, if it is, no dispersion phenomenon will occur. This connecting member can be attached to any can be formed on a substrate, but it can also be fabricated without a substrate, making it easy to Able to meet requests. For example, silicon wafer can be used as a substrate. Since it can be used as a standard, it can be easily incorporated into electronic systems. Also , when a light-transmitting material is used, the intensity of the propagated light is determined by the total reflection beam bending. Enhanced by a reflective reflector. This also improves connection efficiency. At the end, diversification loss The use of waveguide layers is also possible to prevent losses.

Fig, 8 FIS・3 Fig, 12 Procedural amendment (voluntary) March 25, 1994

Claims (9)

[Claims] 1. In the optical waveguide connecting member, a) at least three optical waveguide guide channels arranged in the same plane and terminating in a coupling member; b) the first and second of these guiding channels are , arranged in a straight line closely spaced from each other, with both ends forming a gap area. has been completed, c) a beam refractive reflector is provided in this gap area; d) The configuration and arrangement of this beam refractive reflector is such that the light received in the first guiding channel is Light incident on the waveguide is propagated into the optical waveguide where it is received in a second guiding channel. On the other hand, the light incident on the optical waveguide that is received in the second guiding channel undergoes beam refraction and reflection. It is designed to be reflected at the body, e) the further guiding channel or channels are reflected at the beam refractive reflector; The light transmitted is at least predominantly received by the guide channel or channels. It is arranged so that it is incident on the end of the wave path, f) said connecting member, together with said guiding channel and beam refractive reflector, A connecting member for an optical waveguide, characterized in that it forms a single structural component. 2. an end of the guide channel is limited by a stop of a received optical waveguide; The connecting member according to claim 1, characterized in that: 3. one of the optical waveguides, the beam refracting reflector being received in a guiding channel; The coupling device according to claim 2, characterized in that it forms a stopper for the above optical waveguide. . 4. Claims 1 to 3, characterized in that it is made of optically transparent plastic. The coupling device according to any one of . 5. Any one of claims 1 to 3, characterized in that it is made of a material that reflects light. The connecting member according to item 1. 6. The coupling device according to claim 5, characterized in that it is made of metal. 7. It is characterized by being made of plastic with a metal layer formed on the surface. The connecting device according to claim 5. 8. Claim 1 characterized in that it has an optical waveguide integrated in the guiding channel. 8. The connecting member according to any one of 7 to 7. 9. It is characterized by an integrated multimode fiber as an optical waveguide. The connecting member according to claim 8.