JPH0634833A - Component for optical transmission and reception - Google Patents

Abstract

PURPOSE:To obtain superior performance and reduce the price by using an optical circuit consisting of an optical waveguide instead of a mirror and a lens as a means which demultiplexes or multiplexes sent or received signals. CONSTITUTION:The optical circuit 8 is so structured that its main optical waveguide 10 branches off into two branch optical waveguides 11; and an optical fiber for inputting and outputting a light signal is connected to the main optical waveguide 10 and a light emitting element 5 and a light receiving element 6 are connected to the branch optical waveguides 11 by aligning their optical axes. The optical circuit 8 is formed on a film, and adhered and fixed in a substrate 2. The optical fiber 3 is adhered and fixed in a substrate 4, end surfaces of the substrates 2 and 4 are connected to each other at one end of the substrate 2, and the light emitting element and light receiving element are fixed directly to the other end of the substrate 2. Thus, the optical circuit, optical fiber, light emitting element, and light receiving element are connected in one body and the whole body is sealed with a sealant 7 to form the optical transmitting and receiving component 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical transmitter / receiver component used for optical signal transmission between devices, and more particularly to an optical transmitter / receiver component for branching or joining a transmitter / receiver signal by an optical waveguide.

[0002]

2. Description of the Related Art In the field of optical communication and optical measurement, as a component for transmitting and receiving an optical signal between devices, conventionally, an optical component such as a mirror or a lens and a light emitting element or a light receiving element are combined, and the signal Various optical transmission / reception components having a structure in which optical fibers for input / output are coupled have been developed. Such components include light emitting element, light receiving element and optical fiber with good optical coupling efficiency, easy mass production and low cost, excellent mechanical strength and environmental resistance, lightweight and small size. Something was required.

[0003]

However, the conventional optical transmission / reception component has a problem in mass productivity because it is necessary to spatially arrange a large number of optical components to align the optical axes. Moreover, in order to perform the optical axis alignment precisely and optimally to optimize the optical coupling efficiency of the whole, precision processed expensive sub-materials such as the substrate and fixing parts are required. Was difficult to provide. In addition, since many optical components are individually arranged, there is a drawback that the optical axis is likely to be displaced due to mechanical stress such as vibration and shock, temperature change, etc. Since it is a structure to be touched, there was a point to be improved in terms of environment resistance characteristics such as humidity resistance. Further, it is difficult to reduce the size because it is necessary to spatially align the optical axes of many optical components.
An object of the present invention is to solve the problems of the conventional optical transmission / reception components and to develop and provide an inexpensive optical transmission / reception component with excellent performance to the market.

[0004]

The present invention is characterized in that an optical circuit comprising an optical waveguide is used in place of a conventional mirror or lens as a means for branching or merging transmission / reception signals. . FIG. 1 is a plan view (cross-sectional view) schematically showing the basic configuration of the optical transmitter / receiver component of the present invention, and the optical transmitter / receiver component of the present invention will be described in detail below with reference to this drawing.

The optical transmission / reception component 1 of the present invention comprises an optical circuit for branching / combining optical signals, an optical fiber for inputting / outputting optical signals, a light emitting element and / or a light receiving element. The optical circuit 8 of the present invention has a structure in which the main optical waveguide 10 is branched into two branched optical waveguides 11.
An optical fiber 3 for inputting / outputting an optical signal is provided at 0, a light emitting element 5 is provided at each of the branch optical waveguides 11, and
Alternatively, the light receiving element 6 is adapted to be connected with its optical axis aligned. The optical circuit 8 is formed inside the film 9, and the film 9 is adhered and fixed inside the substrate 2. Further, the optical fiber 3 is adhered and fixed inside the substrate 4, the substrate 2 and the substrate 4 are connected to each other at one end face of the substrate 2, and the light emitting element and / or the light receiving element is connected to the substrate 2. It is fixed directly to the other end. In this way, the optical circuit, the optical fiber, the light emitting element, and the light receiving element are connected and integrated, and then the whole is sealed with the sealant 7 to form the optical transmitting / receiving component 1 of the present invention.

Examples of the method for producing an optical circuit used in the present invention include a method for producing a polymer optical waveguide by a photoselective polymerization method (Japanese Patent Publication No. 56-3532) and a method for producing a glass optical waveguide by an ion exchange method (Izawa et al. , Applied physics, 4
2, 38 (1973)) or the like can be used. In particular, the method for producing a polymer optical waveguide by the selective photopolymerization method is
Since it has a feature that an optical circuit having excellent performance can be easily manufactured, it is an extremely effective means as a method for manufacturing an optical circuit for manufacturing a high-performance and inexpensive optical transmitting / receiving component.

The substrate 2 to which the film 9 having the optical circuit 8 is adhered and fixed has, for example, a structure as shown in FIG. 2 (A). As a method of manufacturing such a substrate, for example, there is a method shown in FIG. 2B, which is a method of laminating a grooved plate 20 in which a groove 21 having a uniform width is formed on one surface of a rectangular flat plate and a flat plate 22. The film 9 can be arranged inside the groove 21 and easily fixed with an adhesive or the like. Here, the film 9 so that the wall line 25 of the groove 21 and the optical circuit 8 are substantially parallel to each other and the optical circuit 8 is located at the center of the groove 21.
If is fixed inside the groove 21, both end surfaces 2 of the substrate 2
At the time of optically polishing 3, 24, with the wall line 25 as a reference line, both end faces 23, 24 of the substrate 2 are substantially perpendicular to this, that is, the optical circuit and the end faces 23, 24 are perpendicular to each other. In addition, the end faces 23 and 24 can be easily smooth-polished. As a result, it is possible to further improve the coupling efficiency in connecting the optical circuit to the optical fiber 3, the light emitting element 5, and the light receiving element 6, and it is possible to improve the bonding strength when bonding these. . Further, since the structure of the substrate is simple in this way, it can be easily and inexpensively obtained by a method such as resin injection molding or a simple cutting process using an inexpensive glass plate. Furthermore, if the substrate is made of metal, it is possible to join the substrate and the element by laser welding.

The substrate 4 for fixing the optical fiber
As such, industrially mass-produced glass capillaries, ferrules for optical connectors and the like can be used as they are, so that they can be procured at low cost. If it is necessary to arrange multiple optical fibers, use the same method as when manufacturing the substrate used to fix the optical circuit film, and use a shape suitable for fixing the optical fibers. To
And it can be manufactured at low cost.

As the light emitting element and the light receiving element, commercially available products that are industrially mass-produced, for example, can type products can be used as they are and directly bonded to the above-mentioned substrate 2. No substrate is required, as is the case with fibers. In this way, according to the present invention, it is possible to manufacture an inexpensive optical transmitting / receiving component without using a precision-processed expensive auxiliary material which is required in the conventional optical transmitting / receiving component. Is. Furthermore, the optical transmitter / receiver component 1 of the present invention is a film on which an optical circuit is formed,
The optical fiber, the optical circuit film, and the substrate that fixes the optical fiber, the light-emitting element, and the light-receiving element make up four component parts, reducing the number of parts and simplifying the manufacturing process. Is the second feature.

Next, the step of connecting the element parts to each other will be described with reference to FIG. The connecting step includes a first step of connecting the optical fiber and the optical circuit (main optical waveguide), a second step of connecting the light receiving element and the optical circuit (branching optical waveguide), and a light emitting element and the optical circuit (branching optical waveguide). And a third step of connecting with the waveguide. The order of connecting the light receiving element and the light emitting element may be reversed. Hereinafter, these three steps will be described in order.

In the first step, the optical fiber and the optical circuit (main optical waveguide) are connected. FIG. 3A is a plan view schematically showing the connection line. First, the substrate 2 having the film 9 fixed thereon is placed on a holder (not shown in the figure). On one side of the substrate 2, an optical fiber 3 having a glass capillary tube 4 attached to one end and an optical connector 15 attached to the other end is arranged. Glass capillary 4
Is fixed to an optical fine movement table (not shown in the figure), and the position can be adjusted by operating the optical fine movement table. The connector 15 is a commercially available stabilized light source 34 (SX-101 manufactured by Seiko Instruments Inc.).
Connected with. A component 30 for measuring the light intensity is arranged at the other end of the substrate 2, and the component 30 is fixed on the optical fine movement table and its position can be adjusted. The component 30 is composed of two commercially available photodiodes 31 (S1190 manufactured by Hamamatsu Photonics) and a simple electronic circuit 32.
The photodiodes 31 are arranged at intervals so as to be substantially equal to the intervals of the branch optical waveguides, and the light output from the branch optical waveguides can be converted into a voltage. Further, the component 30 is connected to a commercially available voltmeter 33 (Hewlett Packard 34401A) so that the output voltage can be monitored.

In the arrangement of FIG. 3A, first, the position of the photodiode 31 is adjusted so that the output light from the branch optical waveguide 11 can be monitored. Photodiode 3
Since the light-receiving area of 1 is considerably larger than the cross-sectional area of the branch optical waveguide 11, the position of the photodiode 31 can be sufficiently adjusted visually, and the operation is completed in a short time. Next, the tip of the glass capillary tube 4 is brought close to the substrate 2, the light from the stabilizing light source 34 is made incident on the main optical waveguide 10, and the output light from the branch optical waveguide 11 is monitored by the voltmeter 32 to perform optical fine movement. The glass capillary tube 4 is bonded and fixed to the substrate 2 with an ultraviolet curable adhesive at a place where a desired light intensity is distributed to each of the branched optical waveguides 11 by operating the table. After that, the component 30 is removed and the first step ends. The alignment of the glass capillary tube 4 can be easily performed even by manually operating the optical fine movement table, and the accurate alignment work can be completed in a short time. However, by controlling the optical fine movement table with a personal computer, it is more efficient. It is a method that can be performed and is suitable for mass production. Further, by using the ultraviolet curable adhesive for the connection, the fixing operation can be completed in a short time and the productivity becomes high.

In the second step, the light receiving element and the optical circuit (branch optical waveguide) are connected. FIG. 3 (B) schematically shows the connection line. After temporarily fixing the photodiode 6 connected to the branch optical waveguide on an optical fine movement table not shown in the figure, the terminals of the photodiode 6 and the electronic circuit 32 of the component 30 used in the first step are connected. The output of the photodiode 6 can be monitored by the voltmeter 33. The light from the stabilizing light source 34 is continuously supplied to the optical circuit 8
While the light is incident on the optical fine moving table, the photodiode 6 is brought close to one of the branch optical waveguides 11, and the optical fine moving table is further moved to align the optical axes of the photodiode 6 and the branch optical waveguide 11. When the optimum position that maximizes the output is determined, the photodiode 6 is bonded and connected to the substrate 2 using an ultraviolet curing adhesive. The optimization of the position is easier than the optimization of the first step and is completed in a short time.

In the third step (last step), the light emitting element and the optical circuit (branching optical waveguide) are connected. FIG. 3C schematically shows the connection line. Optical fiber 3
The optical connector 15 attached to the stabilization light source 3
4 and connected to a commercially available optical power meter 35 (Ando Electric AQ-1111). After fixing the light emitting element 5 on an optical fine movement table not shown in the figure, the light emitting element 5 and the power source 36 (driving circuit of the light emitting element 5) are connected. The optical fine movement table is operated to bring the light emitting element 5 close to the other branched optical waveguide 11. The power source 36 is driven to continuously emit light from the light emitting element 5 to further move the optical fine movement table,
The position of the light emitting element that receives the light through the optical fiber 3 and is monitored by the optical power meter 36 and has the maximum light intensity is searched for. When the optimum position is determined, the power source 36 is turned off, and then the light emitting element 5 and the substrate 2 are bonded and connected to each other by using the ultraviolet curing adhesive as in the case of the light receiving element. This completes the connection between the element parts.

Finally, in order to perform resin sealing with the sealing agent 7,
After installing the integrated optical fiber, optical circuit, light emitting element, light receiving element in the mold, after filling the mold with a commercially available sealing resin and curing by heating, from the mold The optical transmission / reception component 1 is obtained by separating. The case forming the appearance of the product can also be used as the above mold.

As described above, in manufacturing the optical transmission / reception component of the present invention, the element components can be connected to each other only by an inexpensive and simple operation on the optical line consisting of the two optical fine movement stages and the holder. In the manufacturing process of optical transmission / reception parts, the most time-consuming optical axis alignment work can be realized by extremely simple operation without the need for expensive auxiliary materials and parts, resulting in a mass-production manufacturing process. The third feature of the present invention is that a large amount of products can be industrially provided at low cost. Further, the optical transmission / reception component of the present invention has an optical fiber, an optical circuit, a light emitting element, and a light receiving element that are integrated with the substrate on which the optical circuit is fixed as a center, and further, because the whole is sealed, It has a strong structure against mechanical stress such as vibration and shock and temperature change, and will not be damaged or cause optical axis misalignment to change its performance. In addition, since each element part is covered with the substrate, adhesive agent, and sealing resin, and the optical surface is not exposed to the ambient atmosphere, it can be used under high temperature and high humidity conditions or in adverse environments such as corrosive gases. The performance does not deteriorate even in.
As described above, according to the present invention, it is a fourth feature of the present invention that an optical transmission / reception component having excellent optical performance and reliability can be provided.

The optical transmission / reception component of the present invention can be given various functions by changing the structure of the optical circuit. For example, the optical coupling efficiency between the light emitting element and the optical waveguide is increased by using a simple method of making the width on the light emitting element side of the width of the branched optical waveguide of the two-branching optical circuit relatively larger than the width on the light receiving element side. Even when using two light-emitting elements with different emission intensities or two light-receiving elements with different light-receiving sensitivities, an optical transmission / reception component with a good overall balance is manufactured according to the intensity and sensitivity. It is possible. Such balance adjustment has not been easy when using a conventional mirror or lens.

Further, a multi-branching optical circuit may be used to provide a wavelength division multiplexing optical transmission / reception component for transmitting / receiving optical signals of different wavelengths using one optical fiber. Specifically, N
A branch optical circuit (N is an integer of 2 or more) is used to connect one optical fiber to the main optical waveguide 10, and the branch optical waveguide 11 is connected.
Each of them is connected to a light-emitting element having a different emission wavelength to form a transmission component for wavelength-multiplexed signal transmission. In addition, each of the branched optical waveguides 11 is connected to a light-receiving element having a different sensitivity characteristic with respect to the wavelength to form a wavelength-multiplexed signal-receiving component. By using a pair of these transmitting component and receiving component, it is possible to perform wavelength-multiplexed signal transmission using one optical fiber. Here, since the wavelength sensitivity characteristic of the light receiving element itself is not generally sharp,
If a wavelength filter matching the light emission wavelength of each light emitting element is provided between the light receiving element and the optical circuit, the S / N ratio in wavelength multiplexing transmission can be improved. A specific application example of such a wavelength division multiplexing transmission system is optical transmission of analog RGB signals between terminals,
Conventionally, one optical fiber was applied to each of the red, green, and blue signal lights, but if the optical transmission / reception component including the three-branch optical circuit of the present invention is used, one optical fiber is used. Wavelength multiplex transmission is possible with a fiber, and a low-cost system can be realized.

Further, the main waveguide 10 has two ends at each end.
Using a 2 × 2 branch merging circuit divided into two branch optical waveguides 11, a light emitting element and a light receiving element are respectively connected to the two branch optical waveguides on one side, and an optical fiber is connected to the branch optical waveguide on the other side. By connecting the light receiving element for monitoring the output light, it is possible to realize an optical transmitting / receiving component capable of transmitting and receiving while monitoring the transmission signal.

Furthermore, a 2 × N branching / merging circuit having two branches on one side and a large number of branches on the other side is used, and a light-emitting element and a light-receiving element are connected to the two branches, respectively, and an optical element is provided on each of the multiple branches. By connecting fibers, it can be used as a center terminal for 1-to-N star type signal transmission.

Further, in applying the present invention, it is easy to manufacture optical fibers having different optical circuit thicknesses and optical circuit widths according to the optical fibers to be used, and optical transmission / reception using various optical fibers is performed. Parts can be manufactured.

As described above, according to the present invention, an optical transmitter / receiver component having various functions can be manufactured by changing the optical circuit part, and a product having a required function and structure according to the purpose can be provided. This is the fifth feature of the invention. On the contrary, the optical circuit used in the present invention needs to be designed and manufactured to have an optimal structure in accordance with the types and performances of the optical fiber, the light emitting element, the light receiving element, and the purpose of use of the optical transmitting / receiving component. The optical coupling efficiency with the optical fiber is a particularly important point, and in order to optimize the optical coupling efficiency, the type of optical fiber used,
It is necessary to optimize the thickness of the optical circuit film and the dimensions of the optical waveguide in accordance with the characteristics.
The method already disclosed by the present inventors in JP-A-3-156407 is extremely effective.

By carrying out the present invention, it is possible to manufacture a high-performance optical transmission / reception component industrially on a large scale and at a low cost by simplifying the production process as compared with the conventional products and the production method. It is possible.

Hereinafter, the present invention and its effects will be described more specifically and in detail by showing examples. It should be noted that the following examples are for specific description, and do not limit the embodiments or the scope of the present invention.

[0025]

【Example】

Example 1 In a bisphenol z polycarbonate film having a thickness of 180 μm using the selective photopolymerization method, the total length shown in FIG. 4 is 25 mm, the main optical waveguide width is 180 μm, the branch optical waveguide width is 90 μm, and the branch optical waveguide is A two-branch optical circuit with a space of 8 mm was manufactured. This is the second
A commercially available epoxy adhesive (XNR6302 manufactured by Nippon Ciba-Geigy) was used to bond and fix the glass substrate shown in the figure. After that, both end surfaces of the substrate were optically polished by using a polishing device (Ecomet manufactured by Buehler). A strand of a polymer-clad optical fiber with a core diameter of 200 microns and a cladding diameter of 230 microns (OBC-2002 manufactured by Sumitomo Electric Industries, Ltd.) was used to remove the coating on one end to expose the cladding layer. After fixing the inside of the capillary with an epoxy adhesive (353ND manufactured by Epotek), the tip of the glass capillary was optically polished using the above polishing apparatus. Also, a commercially available F is attached to the other end of the optical fiber.
The C connector was attached by a conventional method. Next, the glass capillary tube, the photodiode of the can package (S1190 manufactured by Hamamatsu Photonics) and the light emitting diode (ME1514 manufactured by Mitsubishi Electric) were sequentially bonded and connected to the optical circuit. Then, the connected ones are installed in a resin mold and sealed with a soft urethane resin (UE30 made by Sanyu Resin) and a hard epoxy resin (XNR3506 made by Ciba-Geigy Japan), and the optical transceiver shown in FIG. Completed the parts. The optical transmitter / receiver parts obtained here were subjected to a heat cycle test of raising and lowering the temperature range from -20 ° C to + 80 ° C in 1 hour for 100 cycles at a temperature of 60 ° C and a relative humidity of 90%.
A high temperature and high humidity test was carried out by leaving it in the constant temperature bath for 100 hours. As a result, the level of optical input / output during the test and after the test was stable without change.

Example 2 Using a selective photopolymerization method, a total length of 45 mm, a main optical waveguide width of 360 μm, a branch optical waveguide width of 180 μm, and a branch optical waveguide interval of 8 were placed in a bisphenol z polycarbonate film having a thickness of 180 μm. A millimeter 2 × 2 branch optical circuit was created. Using this optical circuit, an optical transmitting / receiving component with an output monitor element shown in FIG. 6 was manufactured in the same manner as in Example 1. The light emitted from the light emitting diode was branched into the optical fiber side and the monitoring photodiode side almost evenly, and it was confirmed that the output monitor element was functioning as designed. Further, as a result of conducting a reliability test similar to that in Example 1, the performance was stable as in Example 1.

Example 3 Using a selective photopolymerization method, a total length of 25 mm, a main optical waveguide width of 180 μm, a branched optical waveguide width of 60 μm, and an interval between the branched optical waveguides were set in a bisphenol z polycarbonate film having a thickness of 180 μm. Two 8-millimeter 3-branch optical circuits were manufactured. One of them has a polymer clad optical fiber similar to that of the first embodiment for the main optical waveguide, and three kinds of semiconductor laser diodes (LT made by Sharp Corp.) having different output wavelengths for each of the branched optical waveguides.
030, LT011, LT010) were connected via a condensing rod lens (Selfoc microlens made by Nippon Sheet Glass). This was sealed, and the optical transmission component for three-wavelength multiplexing shown in FIG. 7A was manufactured. As a result of measuring the output light from the optical fiber, three-wavelength light was output as designed. In the other three-branching optical circuit, a polymer clad optical fiber similar to that of Example 1 was used for the main optical waveguide, and a wavelength selection filter (semiconductor having a different transmitted light wavelength) was used for each of the branched optical waveguides. Three photodiodes were connected via the laser diode (corresponding to the three wavelengths), and the three photodiodes were sealed and the optical receiving component for three wavelength multiplexing shown in Fig. 7B was manufactured. As a result of connecting the parts and the above-mentioned optical transmission part with an adapter and receiving light of three wavelengths by the optical reception part, the reception side photodiode was able to receive the light of the target wavelength with the S / N ratio as designed. In addition, the above-mentioned optical transmission components and optical As a result of performing a reliability test on the receiving component in the same manner as in Example 1, Example 1
The performance was stable as well.

Example 4 Using a selective photopolymerization method, 2 × 6 branching was conducted in a bisphenol z polycarbonate film having a thickness of 180 μm.
A converging optical circuit was produced. Here, the total length is 45 mm, the width of the main optical waveguide is 360 μm, the width of the branching optical waveguide on the branching side is 180 μm, the spacing between the branching optical waveguides is 8 mm, the width of the branching optical waveguide on the 6-branching side is 60 microns, and the spacing between the branching optical waveguides is 2 In millimeters. By connecting the light emitting element 5 and the light receiving element 6 to each of the two branches, and connecting the optical fiber 3 to each of the six branches,
The optical component shown in FIG. 8 was produced. As a result of measuring the output light from the light emitting element at the output ends of the six optical fibers, it was confirmed that the light intensity was evenly distributed to the six optical fibers according to the design. In addition, as a result of inputting light of equal intensity to each optical fiber from the outside and measuring the light intensity with a light receiving element, almost the same light could be received.

Comparative Example 1 A light-emitting diode and a photodiode were connected in the same manner as in Example 1, using the same two-branch optical circuit as in Example 1.
As a result of carrying out a reliability test similar to that of Example 1 without resin sealing, the heat cycle test was stable, but the performance deteriorated during the high temperature and high humidity test, and the adhesive deteriorated. I found out that

Comparative Example 2 An optical transmitting component and an optical receiving component in which only the sealing step was omitted in Example 3 were manufactured, and a reliability test was conducted in the same manner as in Example 3. As a result, the heat cycle test was good. However, it was found that the performance deteriorated during the high temperature and high humidity test and the adhesive deteriorated.

[0031]

According to the present invention, it is possible to manufacture a wide variety of optical transmitter / receiver components according to needs, and it is possible to provide various optical transmitter / receiver components of high quality and at low cost. .

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a basic structure of an optical transmitting / receiving component according to the present invention.

FIG. 2 is a schematic diagram showing a structure of a substrate including an optical circuit (A).
FIG. 3B is a schematic diagram (B) showing a structure of an optical circuit and a substrate for protecting the optical circuit.

FIG. 3 is a schematic diagram of a process of connecting optical transmitting and receiving components. Here, (A), (B), and (C) are, in order, a connection process of an optical fiber and an optical circuit, a light receiving element and an optical circuit, and a light emitting element and an optical circuit.

FIG. 4 is a schematic diagram of an optical circuit pattern in Example 1.

FIG. 5 is a schematic diagram of the structure of the optical transmitter / receiver component according to the first embodiment.

FIG. 6 is a schematic diagram of a structure of an optical transmitter / receiver component according to a second embodiment.

FIG. 7 is a schematic diagram of a structure of an optical transmitting component and an optical receiving component according to a third embodiment.

FIG. 8 is a schematic diagram of a structure of an optical transceiver component according to a fourth embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Optical transmission / reception component 2 ... Substrate 3 ... Optical fiber 4 ... Substrate for fixing optical fiber (capillary glass in case of one optical fiber) 5 ... Light emitting element 6 ... Light receiving element 7 ... Sealing material 8 ... Optical circuit 9 ... Film on which optical circuit is formed 10 ... Main optical waveguide 11 ... Branch optical waveguide 15 ... Optical connector 20 ... Grooved substrate 21 ... Groove 22 ... Substrate upper plate 23 ... End face 24 ... End face 25 ... Wall line 30 ... Dedicated for alignment Parts 31 ... Photodiode with large light receiving area 32 ... Simple electronic circuit (resistance) 33 ... Voltmeter 34 ... Stabilizing light source 35 ... Optical power meter 36 ... Power supply 41 ... Focusing rod lens 42 ... Wavelength selection filter

[Procedure amendment]

[Submission date] August 5, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a basic structure of an optical transmitting / receiving component according to the present invention.

FIG. 2 is a schematic diagram showing a structure of a substrate including an optical circuit (A).
FIG. 3B is a schematic diagram (B) showing a structure of an optical circuit and a substrate for protecting the optical circuit.

FIG. 3 is a schematic diagram of a process of connecting optical transmitting and receiving components. Here, (A), (B), and (C) are, in order, a connection process of an optical fiber and an optical circuit, a light receiving element and an optical circuit, and a light emitting element and an optical circuit.

FIG. 4 is a schematic diagram of an optical circuit pattern in Example 1.

FIG. 5 is a schematic diagram of the structure of the optical transmitter / receiver component according to the first embodiment.

FIG. 6 is a schematic diagram of a structure of an optical transmitter / receiver component according to a second embodiment.

FIG. 7 is a schematic diagram of a structure of an optical transmitting component and an optical receiving component according to a third embodiment.

FIG. 8 is a schematic diagram of a structure of an optical transceiver component according to a fourth embodiment.

[Explanation of Codes] 1 ... Optical transmitting / receiving component 2 ... Substrate 3 ... Optical fiber 4 ... Substrate for fixing optical fiber (glass capillary tube in the case of one optical fiber) 5 ... Light emitting element 6 ... Light receiving element 7 ... Sealing material 8 Optical circuit 9 Film forming optical circuit 10 Main optical waveguide 11 Branch optical waveguide 15 Optical connector 20 Grooved substrate 21 Groove 22 Substrate upper plate 23 End face 24 End face 25 Wall line 30 Dedicated parts for alignment 31 ... Photodiode with large light receiving area 32 ... Simple electronic circuit (resistance) 33 ... Voltmeter 34 ... Stabilizing light source 35 ... Optical power meter 36 ... Power supply 41 ... Focusing rod lens 42 ... Wavelength Selection filter

Claims (2)

[Claims] 1. An optical fiber for inputting / outputting an optical signal, a light emitting element, and / or a light receiving element are provided on a substrate on which an optical circuit including an optical waveguide for branching / combining optical signals is fixed. An optical transmitting and receiving component characterized in that it is connected and fixed to form one body, and the periphery is sealed and reinforced. 2. The optical transmitter / receiver component according to claim 1, wherein the optical circuit for branching / combining optical signals is an optical circuit composed of a polymer optical waveguide.