JP2002353471A - Optical transceiver and production method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical transceiver and a production method for the same, with which improvement of production efficiency and the cost reduction or the like can easily provided, and further high-frequency transmission characteristic or crosstalk characteristic can be improved. SOLUTION: In an optical transceiver 10 and the production method for the same, an optical module part 14, in which optic/electric converting elements 12 and 13 are integrated, and a circuit board 16 are connected by a connecting component 15, located on the rear end of the optical module part 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an SFP (SF) type used as a transceiver for high-speed optical communication such as an optical LAN.
The present invention relates to an optical transceiver of P (Small Form Factor Hot Plaggable) and a method of manufacturing the optical transceiver.

[0002]

[Prior Art] Standard SFP Multi Sour between optical communication equipment companies
SFP type (SFP: Small)
As an optical transceiver of Form Factor Hot Plaggable), an LD is mounted on a circuit board 2 as shown in FIGS.
Element 3 (LD: semiconductor laser) and PD element 4 (PD:
A photodiode) is attached, and this is connected to the receptacle 5 or the outer sleeve 6 into which the optical connector plug is inserted and connected.
The structure incorporated in the outer case 6 including a is widely adopted. Then, the optical transceiver 1 is mounted on the motherboard by inserting a portion including the circuit board 2 into the cage connector of the motherboard from the insertion portion 8 configured to accommodate the outer sleeve 6a. The rear end side of the circuit board 2, that is, the insertion front end side of the insertion portion 8 with respect to the cage connector (the upper right back in FIG. 13, FIG.
The end on the right side of (b) functions as a card edge connector (hereinafter, this portion is referred to as a “card edge connector portion 9”). When the insertion portion 8 is inserted into the cage connector, the card The edge connector section 9 is electrically connected to a terminal in the cage connector.

[0003]

However, the above-described optical transceiver 1 has the following problems. (1) Generally, the entire process of assembling the optical transceiver 1 is performed consistently from the process of attaching the LD element 3 or the PD element 4 to the circuit board 2 to the process of assembling the same into the outer case 6. The structure is difficult to assemble, so it is difficult to improve the manufacturing efficiency. (2) According to the standard, the position of the card edge connector portion 9 with respect to the external dimensions of the insertion portion 8 is determined, so that the position of the circuit board 2 protrudes from the rear surface of the photoelectric conversion element such as the LD element 3 or the PD element 4. 14 (lower side in FIG. 14 and lower side in FIG. 15 (b)). For this reason, when soldering the lead 7 on the circuit board 2, the lead 7 is bent and
The high-frequency transmission characteristics are degraded depending on the length secured to the lead 7 for the bending process, and a high-frequency signal noise radio wave is generated from the lead 7 and becomes a noise on the PD side. There has been dissatisfaction such as deterioration of so-called crosstalk characteristics. Further, there was a complaint that the bending process of the lead 7 itself was troublesome.

The present invention has been made in view of the above circumstances, and provides an optical transceiver and a method of manufacturing an optical transceiver that can easily achieve an improvement in manufacturing efficiency, a reduction in cost, and the like, and an improvement in high-frequency transmission characteristics and crosstalk characteristics. The purpose is to:

[0005]

In order to solve the above-mentioned problems, an optical transceiver according to the present invention has a connecting part provided at a rear end side of an optical module section in which a photoelectric conversion element as a light emitting element or a light receiving element is incorporated. And the circuit board is connected. According to a second aspect of the present invention, in the optical transceiver according to the first aspect, an insertion portion configured by incorporating a portion including the circuit board into a sleeve-shaped outer case is inserted into a cage connector on a motherboard side.
A board insertion groove that is configured so that a card edge connector portion at a rear end of the circuit board is connected to the cage connector, and that is opened in a board support member fixed to an insertion end of the outer case with respect to the cage connector; The circuit board is supported by the board supporting member by penetrating the circuit board, and a rear end of the circuit board is projected from the board supporting member. Claim 3
According to the invention described in the first or second aspect, the light emitting element and the circuit board are connected by a flexible printed circuit. According to a fourth aspect of the present invention, in the optical transceiver of the second or third aspect, a label on which information such as line information for connecting the optical transceiver is described is projected on the upper surface of the outer case. It is characterized in that a recess for accommodating without being made is formed. According to a fifth aspect of the present invention, there is provided a method for manufacturing an optical transceiver, comprising: an optical module in which a photoelectric conversion element, which is a light emitting element or a light receiving element, is incorporated; It is characterized by being connected by parts.

In the optical transceiver of the present invention, the assembly of the optical module and the assembly of the other parts can be performed in parallel on different lines, so that it is possible to easily achieve an improvement in manufacturing efficiency and a reduction in cost. In addition, the circuit board is supported by the board support member fixed to the outer case at the insertion end of the insertion section with respect to the cage connector, thereby achieving stable support of the circuit board. The displacement can be prevented. The stable support of the circuit board can be realized with a small number of parts and low cost. If the photoelectric conversion element of the optical module unit and the circuit board are electrically connected by a flexible printed circuit, the flexibility of the flexible printed circuit causes the circuit board to be moved relative to the photoelectric conversion element. Can flexibly respond to position. In addition, this makes it possible to shorten the length of the flexible printed circuit relating to the connection between the photoelectric conversion element and the circuit board, as compared with a lead such as a copper wire, thereby improving high-frequency transmission characteristics and crosstalk characteristics. it can. Needless to say, the present invention can employ a configuration in which a plurality of photoelectric conversion elements, which are light emitting elements or light receiving elements, are incorporated in the optical module unit. In this case, a configuration in which a light emitting element and a light receiving element are mixed can be adopted as the photoelectric conversion element incorporated in the optical module unit. In some cases, a configuration in which all photoelectric conversion elements incorporated in the optical module unit are dedicated to transmission as light emitting elements, and a configuration in which all photoelectric conversion elements incorporated in the module unit are dedicated to reception as light receiving elements can be adopted. .

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall perspective view showing an optical transceiver 10 according to the present invention, and FIGS.
FIG. 3 is an exploded view of the optical transceiver 10. FIG.

The optical transceiver 10 conforms to the standard SFP Multi
SFP type defined in the Source Agreement (SFP: Sm
all Form Factor Hot Plaggable). In FIG. 1 to FIG.
0 is a light emitting element 12 and a light receiving element 1 as photoelectric conversion elements.
3 and a connection component 15 fixed to the rear end side of the optical module section 14 (right side of the optical module section 14 in FIGS. 2A and 2B and FIG. 3). A circuit board 16 connected to the optical module section 14 via the connecting component 15; and an outer case 11 having a rectangular cross-sectional sleeve shape for housing the circuit board 16.
And a rear end portion of the outer case 11 (FIGS. 2A and 2B).
A board support member 17 fixed to the right side of the outer case 11 in FIG. 3 and supporting the circuit board 16 is provided. The optical transceiver 10 includes an insertion portion 19 configured to accommodate a portion of the optical module portion 14 excluding the receptacle portion 18 on the distal end side and the circuit board 16 so as to be housed in the outer case 11. Is mounted on the motherboard by inserting it into the cage connector. When the optical transceiver 10 is mounted on the motherboard, the card edge connector 16a at the rear end of the circuit board 16 is electrically connected to terminals in the cage connector. Thereby, the light emitting element 12 and the light receiving element 13 are electrically connected to the electric circuit on the motherboard side via the circuit formed on the circuit board 16. Here, a semiconductor laser (LD) is employed as the light emitting element 12, and the light emitting element 12 may be hereinafter referred to as "LD12". Here, a photodiode (PD) is employed as the light receiving element 13.
3 may be referred to as “PD13”. Hereinafter, L, which is a photoelectric conversion element provided in the optical module unit 14,
D12 and PD13 may be collectively referred to as "photoelectric conversion elements 12, 13".

The optical module 14 has a connector hole 21 into which an optical connector plug 20 is removably inserted.
The LD 12 and the PD 13 are incorporated in a receptacle portion 18 which is a housing in which a and 21b are formed side by side. LD12 and PD13
Here, a CAN type (TOCAN type) element is adopted, and is arranged inside the receptacle portion 18 side by side so as to correspond to the connector holes 21a and 21b, respectively. When the optical connector plug 20 is inserted and connected to the connector holes 21a and 21b from the tip side (the left side of the optical module section 14 in FIGS. 2A and 2B, FIGS. 3 and 4, etc.) The ferrule built in the optical connector plug 20 is used for the photoelectric conversion element 12,
13 on the front side (the end of the optical module 14)
The optical fibers facing each other via a lens system component disposed in the ferrule and optically inserted into and fixed to the ferrule are optically coupled to the photoelectric conversion elements 12 and 13 so that optical signals can be transmitted and received.

In FIGS. 1 (a) to 1 (d) to 4 and the like, the optical module portion 14 corresponds to the insertion connection of an optical connector plug 20 which is a so-called LC type optical connector plug (trademark of Lucent Technology). Is illustrated. The LC type optical connector plug has a diameter of 1.25 m.
A single-core capillary ferrule having a length of m is incorporated in a housing with a latch, and can be attached to and detached from a female housing such as an optical connector receptacle or an optical connector adapter by push-pull. The receptacle section 18 of the optical module section 14 has a configuration in which a latch of an optical connector plug 20 which is an LC type optical connector plug can be engaged and disengaged, and the optical connector plug 20 can be attached and detached by push-pull. ing. A capillary (not shown) into which the ferrule of the optical connector plug 20 is inserted is mounted at the tip of the photoelectric conversion elements 12 and 13 which are TOCAN-type elements, and the ferrule is inserted into the capillary. The optical fiber on the optical connector plug 20 side is optically coupled to the photoelectric conversion elements 12 and 13.

As shown in FIGS. 2 (b) and 5 (a) to 5 (e), the connection component 15 is an integrally molded product made of a synthetic resin such as PPS (polyphenylene sulfide). As a structure for fixing the connection component 15 to the optical module portion 14, various types such as bonding and fixing with an adhesive, fitting of fitting claws, and the like can be adopted. A plurality of windows 15a opened in the connection component 15 are arranged side by side corresponding to the photoelectric conversion elements 12 and 13 incorporated in the optical module section 14. A window 15a arranged corresponding to the LD 12 is connected to the lead 12a, which is a linear conductor extending from the LD 12 to the rear end side of the optical module section 14, so as to be electrically conductive by soldering or the like. In this case, the soldered) tape-shaped flexible printed circuit 23
(Hereinafter sometimes abbreviated as “FPC 23”), and a linear conductor extending from the PD 13 to the rear end side of the optical module portion 14 is inserted into a window 15 a arranged corresponding to the PD 13. Is inserted.
The FPC 23 and the lead 13a are connected to the photoelectric conversion element 12,
The optical module portion 14 is projected to the rear end side through a window 15 a individually corresponding to the component 13, and is soldered to the circuit board 16.

In the optical transceiver 10, a board fitting groove 15b formed on the rear surface side (circuit board 16 side) of the connection component 15 fixed to the rear end side of the optical module portion 14.
The circuit board 16 is inserted and fitted into the
6 is the optical module part 14
2 (b), and is connected to the optical module unit 14 at a predetermined position in the vertical direction in FIG. The connection position of the circuit board 16 with respect to the optical module unit 14 by the connection component 15 (specifically, the board fitting groove 15b) is a position shifted downward from the center of the optical module unit 14 in the height direction. , Photoelectric conversion elements 12, 13
Lead-out area from which a plurality of leads are drawn out on the rear surface side (here, the rear surface 22 of the photoelectric conversion element).
2) (see FIG. 2D). The circuit board 16 is fixed to the outer case 11 at the tip of the insertion portion 19 (the right side in FIGS. 2A and 2B; the side to be inserted into the cage connector).
7 and is stably accommodated by the connection component 15 and the board fixing member 17 so as not to move to a predetermined position in the outer case 11.

6 (a) to 6 (f), the substrate fixing member 17 is an integrally molded product made of a synthetic resin such as PPS, and is formed in a gate shape.
The circuit board 16 is inserted and penetrated so that the circuit board 16 is inserted into a pair of board insertion grooves 17c formed respectively on a pair of opposed inner wall surfaces 17b of 7a. The board insertion groove 1
7c is adapted to fit with the circuit board 16, and can stably support the circuit board 16 without rattling. In the board insertion groove 17c, a part in which the shape of the circuit board 16 in a plan view (see FIG. 2A) is slightly narrower is inserted near the card edge connector portion 16a. The circuit board 16 supported by the board 15 and the board support member 17 does not fall out of the rear end of the optical transceiver 10 (the end of the insertion section 19). The card edge connector portion 16a protrudes from the substrate support member 17 toward the rear end of the optical transceiver 10 (the end of the insertion portion 19).

FIGS. 2 (a), 2 (b), 2 (d), 6 (a)
(F) and the like, the opening 17 is pushed into the outer case 11 in a direction in which the opening 17 communicates in the axial direction of the sleeve-shaped outer case 11, and the outer surfaces of the opposite side walls 17 d of the opening 17. The engaging claw 17e protruding from the side is fitted in a hole 11a formed in the outer case 11 to be fixed at a predetermined position with respect to the outer case 11. However, the structure for fixing the substrate support member to the outer case 11 is not limited to the above-described configuration, and can be appropriately changed. Since the board fixing member 17 is integrally formed of resin, the number of parts is only one, and the cost can be reduced. The attachment to the outer case 11 is also easy.

The FPC 23 and the lead 13a are both soldered to the front end of the circuit board 16 (the end on the side of the optical module 14).
As shown in FIG. 2B, the end of the LD 12 is soldered to the front end of the circuit board 16 at the longitudinal end opposite to the longitudinal end connected to the lead 12 a of the LD 12. Also, PD1
The third lead 13a is appropriately bent and soldered to the front end of the circuit board 16. As shown in FIGS. 7A to 7D, a reinforcing plate 23a is attached to one end in the longitudinal direction of the FPC 23, and a lead penetrating the reinforcing plate 23a and a portion of the FPC 23 that is in contact with the reinforcing plate 23a. The lead 12a of the LD 12 is inserted into the hole 23b, and is fixed by soldering, a conductive adhesive, or the like. Specifically, the FPC 23 includes an insulating base layer 231, electric circuits 232, 233 provided on both surfaces of the base layer 231, and electric circuits 232, 23.
3 and a protective resin cover layer 234, 235 sandwiched between the base layer 231 and the base layer 231. The electric circuits 232 and 233 are formed by processing rolled copper foil or the like.
3 over the entire length in the longitudinal direction of the FPC2.
The other end in the longitudinal direction of 3 can be soldered to the circuit board 16.

As shown in FIGS. 8 (a) to 8 (d), the outer case 11 is formed by bending a stainless steel sheet into a tubular shape having a rectangular cross section. This outer case 11
For example, it is also possible to connect to a ground pad of the circuit board 16 via a contact soldered to the circuit board 16. In this case, when the insertion portion 19 is inserted into the cage connector, the circuit board 16
Can be connected to the ground terminal on the cage connector side. By the way, as shown in FIG.
1 is formed with a recess 11c slightly depressed from the upper surface 11b, and a label 11d is formed on the bottom of the recess 11c.
Is affixed. The label 11d describes information such as the line number of the optical line to which the optical transceiver 10 is connected. The entire upper surface of the label 11d is accommodated in the recess 11c so that there is no portion protruding above the upper surface 11b of the outer case. Therefore, this optical transceiver 1
Even when the attachment / detachment operation to the cage connector of No. 0 is performed, the inconvenience of the label 11 d being hooked and detaching from the outer case 11 can be avoided. The label 11d can be attached to the bottom of the recess 11c with an adhesive. For example, a metal plate-shaped label can be fixed to the outer case 11 by fusion or the like. It is.

(Another Embodiment) An optical transceiver 30 shown in FIGS. 9A to 9D is provided with an optical module 31 capable of supporting connection with a multi-core optical connector plug. FIG. 10A shows the optical module section 31.
There is provided a cylindrical receptacle 31d into which the optical connector plug 32 shown in FIG. The optical connector plug 32 is a so-called MT-RJ type optical connector, and has a ferrule 36 at a tip end of a housing 35 having a latch 34 which can be disengaged from a female optical connector such as an optical connector receptacle or an optical connector adapter 33. After being inserted and connected to the female optical connector, it can be pulled out of the female optical connector by the operation of releasing the engagement of the latch 34 with the female optical connector. The ferrule 36 is an MT type optical connector (MT: Mechanically Traverse) defined in JIS C5981.
This is a plastic ferrule which is precisely positioned and butt-connected by the same pin connection method as that of the nsferable, but is smaller in size than the MT optical connector. Here, the ferrule 36 holds two optical fibers 37, and the tip ends thereof are exposed to the joint end surface 36a.

The optical module section 31 of the optical transceiver 30
A latch insertion groove 31a into which the latch 34 of the optical connector plug 32 is inserted is provided inside the receptacle portion 31d. The latch 34 is inserted into the interior of the receptacle 31d while pressing its inner surface along the latch insertion groove 31a by its own spring force.
By entering into the engagement hole 31e opened in the side wall of the receptacle d, it is detachably engaged with the receptacle 31d. By pushing the optical connector plug 32 into the rear side of the optical module section 31, the joining end face 36a of the ferrule 36 at the tip of the housing 35 comes into contact with the optical fiber holding member 31b on the optical module section 31 side, and is exposed at the joining end face 36a. The optical fiber 37 held by the optical fiber holding member 31b and exposed at its end face
To be connected. As is well known, ferrule 36
Is precisely positioned and butt-connected to the mating side to be connected by the pin connection method.
In the optical connector plug 32, the guide pin holes 36 on both sides of the joint end surface 36a of the ferrule 36 at the tip of the housing 35
The ferrule 36 is precisely positioned by pressing and inserting and fitting the positioning pins 31f projecting on both sides via the optical fiber holding member 31b at the innermost part of the receptacle part 31d. Optical connection between the fibers 31c and 37 is realized. Here, two optical fibers 37 held by the ferrule 36 of the optical connector plug 32 are connected to two optical fibers 31c on the optical fiber holding member 31b side. The optical fibers 31c on the side of the optical fiber holding member 31b are respectively provided with the photoelectric conversion elements 1 built in the optical module unit 31.
The optical fibers 31c are individually optically connected to the optical fibers 31c, respectively.
7 is connected, the optical fiber 37 on the optical connector plug 32 side is connected to the photoelectric conversion element 1 via the optical fiber 31c.
Optically connected to 2, 13.

As shown in FIG. 9D, the board supporting member 171 fixed to the rear end of the outer case 11 of the optical transceiver 30 is an integrally molded product made of resin.
It has a wall 171a arranged so as to cover the outer case 11, and holds the circuit board 16 penetrated by a board insertion groove 171b opened at the center of the wall 171a.

In this optical transceiver 30, FIG.
1 (a) and 1 (b), a connection component 40 as shown in FIG. 12 is employed. The connection component 40 is formed from a substantially U-shaped frame fixing board 41 on which the front end of the circuit board 16 is mounted, and a portion located at the innermost portion of the “U” opening of the board fixing table 41. It has an insertion fixing piece 42 protruding toward the center of the U-shaped opening, and inserts the insertion fixing piece 42 into a cut 31k (see FIG. 11B) formed in the optical module section 31. Then, the substrate fixing base 41 is arranged at a predetermined position on the rear end side of the optical module unit 31. A projection 42 projecting from the optical module 31 into the cut groove 31k is inserted into a hole 42a (see FIG. 12) formed at the tip of the insertion fixing piece 42 projecting from the substrate fixing table 41.
By inserting and fitting j (see FIG. 11B), the withdrawal strength of the connection component 40 with respect to the optical module 31 can be sufficiently secured. The circuit board 16 is adhesively fixed on a board fixing base 41, and is thereby positioned and connected to the optical module section 31 via the connection component 40. Further, the positioning holes 1 formed in the circuit board 16 are formed.
6c is fitted into a positioning projection 41a protruding on the substrate fixing base 41, and further, the cutouts 16d on both right and left sides of the end of the circuit board 16 on the side of the optical module 31 are connected to the U-shaped substrate. Engagement protrusions 4 protruding from both ends of fixed base 41
By engaging or fitting with 1b, the circuit board 16 is firmly fixed to the optical module unit 31 via the connection component 40. As shown in FIGS. 9A and 9C, the U-shaped substrate fixing base 41 is disposed so as to avoid a ground pad (not shown) at the end of the circuit board 16 on the optical module section 31 side. And the lead 13 of the FPC 23 and the PD 13
a. The fixing position of the circuit board 16 with respect to the optical module unit 31 by the connecting component 40 is the same as that of the optical transceiver 10 described above. The structure for fixing and connecting the circuit board 16 to the optical module unit using the connection component 40 is not limited to the optical transceiver 30, but is applicable to each optical transceiver according to the present invention such as the optical transceiver 10 described above.

The present invention is not limited to the above-described embodiment, and it goes without saying that the specific shapes of the outer case 11 and the connecting parts 15 can be appropriately changed. In the above-described embodiment, the optical transceiver for two cores has been exemplified. However, the present invention is not limited to this, and a configuration capable of coping with more cores such as four cores and eight cores can also be adopted. In order to cope with multiple cores, photoelectric conversion elements are added to the optical module.

[0022]

As described above, according to the optical transceiver of the present invention, the assembling of the optical module and the assembling of the other parts can be performed in separate steps, and the assembling of each part can be performed in parallel. Since it can be performed, there is an excellent effect that the production efficiency can be improved and the cost can be easily reduced. In addition, the circuit board is supported by the board support member fixed to the outer case at the insertion end of the insertion section with respect to the cage connector, thereby achieving stable support of the circuit board. The displacement can be prevented. The stable support of the circuit board can be realized with a small number of parts and low cost. If the photoelectric conversion element of the optical module unit and the circuit board are electrically connected by a flexible printed circuit, the flexibility of the flexible printed circuit causes the circuit board to be moved relative to the photoelectric conversion element. Can flexibly respond to position. In addition, this makes it possible to shorten the length of the flexible printed circuit relating to the connection between the photoelectric conversion element and the circuit board, as compared with a lead such as a copper wire, thereby improving high-frequency transmission characteristics and crosstalk characteristics. it can. As a result, it is possible to improve characteristics such as noise reduction on the light receiving element side.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of an optical transceiver according to an embodiment of the present invention.

2 (a) to 2 (d) are views showing the optical transceiver of FIG. 1, wherein (a) is a plan view, (b) is a front view (partially cut away), and (c). Is a side view as seen from the receptacle part side, and (d) is a side view as seen from the rear end side.

FIG. 3 is an exploded view showing the optical transceiver of FIG. 1;

FIG. 4 is a plan view showing an optical module of the optical transceiver of FIG. 1;

5 (a) to 5 (e) are diagrams showing the shapes of connecting parts applied to the optical transceiver of FIG. 1;

FIGS. 6A to 6F are diagrams showing the shape of a substrate fixing member applied to the optical transceiver of FIG. 1;

FIGS. 7A to 7D are views showing an FPC applied to the optical transceiver of FIG. 1, wherein FIG. 7A is a plan view,
(B) is a front view, (c) is a front view showing a state where the LD is fixed to leads and a circuit board, and (d) is a cross-sectional view.

FIGS. 8A to 8D are views showing the shape of an outer case applied to the optical transceiver of FIG. 1;

FIGS. 9A to 9D are views showing an optical transceiver according to another embodiment of the present invention, which shows an optical transceiver applicable to connection of a so-called MT-RJ optical connector.

10A and 10B are diagrams showing specific examples of an optical connector plug connected to the optical transceiver of FIG.

FIG. 11 is a view showing another embodiment of the connection component,
FIG. 3A is a perspective view of a fixed state with respect to the optical module unit viewed from the rear end side, and FIG. 3B is a front view of FIG.

FIG. 12 is a perspective view showing the connection component of FIG. 11;

FIG. 13 is a perspective view showing the appearance of a conventional optical transceiver.

FIG. 14 is an exploded view showing the optical transceiver of FIG.

FIGS. 15A to 15D are diagrams schematically showing the internal structure of the optical transceiver of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Optical transceiver, 11 ... Outer case, 11b ... Top surface, 11c ... Concave part, 11d ... Label, 12 ... Photoelectric conversion element (light emitting element, LD), 13 ... Photoelectric conversion element (light receiving element, PD), 14 ... Optical module part, 15 ... Connecting parts, 16 ... Circuit board, 16a ... Card edge connector part, 17 ... Substrate support member, 17c ... Substrate insertion groove, 1
9: insertion part, 30: optical transceiver, 31: optical module part, 40: connecting part.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Shinya Abe 1440, Mukurosaki, Sakura-shi, Chiba Prefecture Inside Fujikura Sakura Office Co., Ltd. F term (reference) 5F073 BA01 FA06 FA07 FA30 5F088 BA16 BB01 EA07 EA09 EA16 JA14

Claims (5)

[Claims] A circuit board (16) is connected to a rear end side of an optical module part (14, 31) in which a photoelectric conversion element (12, 13) is incorporated via a connection part (15, 40). Optical transceivers (10, 3
0). 2. A card edge at a rear end of the circuit board by inserting an insertion portion (19) configured by incorporating a portion including the circuit board into a sleeve-shaped outer case (11) into a cage connector on a motherboard side. A connector portion (16) is configured to be connected to the cage connector, and a board insertion groove (17c) opened in a board support member (17) fixed to an insertion end of the outer case with respect to the cage connector. A) supporting the circuit board on the board support member by penetrating the circuit board;
2. The optical transceiver according to claim 1, wherein a rear end of the circuit board protrudes from the board support member. 3. A flexible printed circuit (2) is provided between a light emitting element as the photoelectric conversion element and a circuit board.
3. The connection according to claim 3, wherein
Or the optical transceiver according to 2. 4. A recess (11d) for accommodating a label (11d) describing information such as line information for connecting the optical transceiver on the upper surface (11b) of the outer case without protruding above the upper surface of the outer case. An optical transceiver according to claim 2 or 3, wherein 11c) is formed. 5. A connection component (1) in which an optical module (14) incorporating a photoelectric conversion element (12, 13) and a circuit board (16) are arranged at the rear end of the optical module.
5) A method of manufacturing an optical transceiver, wherein the connection is performed according to 5).