JP2012215838A - Housing for optical transceiver, and optical transceiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing for an optical transceiver, which allows the reduction of a space for an optical fiber cable in the front of the optical transceiver, and to provide an optical transceiver.SOLUTION: The housing for an optical transceiver includes a front wall, a first region, a second region, a third region, and a partition wall. An optical receptacle 14 is mounted in the first region. A plurality of sub-assemblies 16 are mounted in the second region. A pair of optical fibers for optically coupling an optical connector plug inserted to the optical receptacle 14 and the plurality of optical assemblies 18 are drawn in the third region. The partition wall includes a first wall defining the first region from back in a first direction and a pair of second walls defining the first region from sides. The optical receptacle 14 is mounted in the first region so that a port of the optical receptacle extends in a direction between the first direction and a second direction in which the pair of second walls are arrayed.

Description

  Embodiments described herein relate generally to a housing for an optical transceiver and an optical transceiver.

  Some optical transceivers are described in Non-Patent Document 1 below. In the optical transceiver described in Non-Patent Document 1, the port of the optical receptacle is exposed from the opening of the front cover. The port is a space extending in a direction orthogonal to the front surface of the front cover. An optical connector plug containing an optical fiber cable is inserted into the port from the outside.

"Cisco CRS-1 Carrier Routing System 10-Gigabit Ethernet Physical Layer Interface Module (PLIM) Installation Note", [online], [searched February 17, 2011], Internet <URL: http://www.cisco .com / japanese / warp / public / 3 / jp / service / manual_j / rt / crs / crs10in / chapter01 / 6437_01.pdf>

  When an optical connector plug is attached to a port of an optical transceiver described in Non-Patent Document 1, an optical fiber cable extending from the optical connector plug extends in a direction orthogonal to the front surface of the front cover. Therefore, a large space may be required as a space where the optical fiber cable extends in front of the front cover.

  Accordingly, there is a need in the art to reduce the space for optical fiber cables in front of optical transceivers.

  One aspect of the present invention relates to a housing for an optical transceiver. The housing includes a front wall, a first region, a second region, a third region, and a partition wall. An opening for exposing the port of the optical receptacle that receives the optical connector plug is formed in the front wall. The first region is a region where an optical receptacle is mounted. The first region is continuous with the opening in a first direction orthogonal to the front wall. The second region is a region on which a plurality of optical subassemblies including an optical transmission subassembly that converts an electrical signal into an optical signal and an optical reception subassembly that converts an optical signal into an electrical signal are mounted. The third region is a region for routing a pair of optical fibers for optically coupling the optical connector plug inserted into the optical receptacle and the plurality of optical subassemblies. The partition wall defines a first region. The partition wall includes a first wall that defines the first region from the rear in a first direction from the first region toward the second region, and a pair of first walls that define the first region from the side. 2 walls. In the first region, the optical receptacle can be mounted so that the port of the optical receptacle extends in a direction between the first direction and the second direction in which the pair of second walls are arranged. .

  In this housing, the port of the optical receptacle extends in the direction between the first direction (ie, the front-rear direction) and the second direction (ie, the width direction) in a first region continuous with the opening in the front wall. As is present, it is possible to mount an optical receptacle. According to the optical transceiver using such a housing, when the optical connector plug is attached to the optical receptacle, the optical fiber cable of the optical connector plug extends in an oblique direction with respect to the front wall of the housing. As a result, the space for the optical fiber cable in front of the optical transceiver is reduced.

  In one embodiment, a pair of first grooves extending in a third direction between the first direction and the second direction may be formed in the partition wall. The third direction is a direction between the first direction and the second direction, and is a predetermined direction inclined with respect to the first direction. In the housing of this embodiment, by passing a pair of optical fibers extending from the optical receptacle through the pair of first grooves, the pair of optical fibers extends in the third direction and passes through the partition wall. Can be made. Therefore, it is possible to arrange the optical receptacle so that the port extends in the third direction while suppressing the bending applied to the pair of optical fibers.

  In one embodiment, the partition wall may be formed with another pair of first grooves extending in a direction symmetrical to the third direction with respect to the first direction. In the housing of this embodiment, by passing a pair of optical fibers extending from the optical receptacle through a pair of other first grooves, the pair of optical fibers are arranged in a direction symmetrical to the third direction. It can extend and pass through the partition wall. Therefore, in the housing of this embodiment, it is possible to dispose the optical receptacle so that the port extends in a direction symmetrical to the third direction while suppressing the bending applied to the pair of optical fibers. That is, the optical receptacle can be mounted upside down on the housing of this embodiment. As a result, the drawing direction of the optical fiber cable in front of the optical transceiver can be changed to a line symmetric with the third direction.

  In one embodiment, the partition wall may be formed with a pair of second grooves extending in the first direction and arranged in the second direction. In the housing of this embodiment, by passing a pair of optical fibers extending from the optical receptacle through the pair of second grooves, the pair of optical fibers extends in the first direction and passes through the partition wall. It is possible to make it. Therefore, an optical receptacle having a port extending in the first direction can be mounted on the housing. That is, the housing can be shared for different optical receptacles having ports extending in different directions.

  In one embodiment, the first region may include support means for rotatably supporting the optical receptacle about an axis extending in a direction orthogonal to the first direction and the second direction. According to the housing of this embodiment, the extending direction of the port of the optical receptacle can be arbitrarily inclined between the first direction and the second direction. Therefore, in the optical transceiver using the housing of this embodiment, the optical fiber cable of the optical connector plug can be extended obliquely in front of the optical transceiver.

  In one embodiment, the partition wall may define a space connecting the first region and the second region, and the second direction is longer than the length of the space in a direction parallel to the axis. The length of the space may be long. In the housing of this embodiment, a pair of optical fibers extending from the optical receptacle can be guided to the second region via the space. The space is wide in the second direction. That is, the space is configured to receive the oscillation of the optical fiber due to the rotation of the optical receptacle about the axis. Therefore, the movement of the optical fiber accompanying the rotation of the optical receptacle is not hindered.

  Another aspect of the present invention relates to an optical transceiver. This optical transceiver includes the housing on one side described above, an optical receptacle, a plurality of optical subassemblies, and a pair of optical fibers. The optical receptacle has a pair of ports that receive external optical connector plugs. The housing can be mounted with an optical receptacle in the first region such that the pair of ports extend in a direction between the first direction and the second direction. The plurality of optical subassemblies include an optical transmission subassembly that converts an electrical signal into an optical signal and an optical reception subassembly that converts an optical signal into an electrical signal, and is mounted in the second region. The pair of optical fibers provides an optical path for optically coupling the optical connector plug inserted into the pair of ports of the optical receptacle and the plurality of optical subassemblies. The pair of optical fibers extends from the pair of ports of the optical receptacle and is routed in the third region.

  In this optical transceiver, the optical receptacle can be mounted on the housing such that the port extends in a direction between a first direction (ie, the front-rear direction) and a second direction (ie, the width direction). According to such an optical transceiver, when the optical connector plug is attached to the optical receptacle, the optical fiber cable of the optical connector plug extends in an oblique direction with respect to the front wall of the housing. As a result, the space for the optical fiber cable in front of the optical transceiver is reduced.

  In one embodiment, the partition wall is formed with a pair of first grooves extending in a third direction between the first direction and the second direction, and the pair of optical fibers is a pair of first fibers. You may pass through in one groove. In the optical transceiver of this embodiment, by passing a pair of optical fibers extending from the optical receptacle through the pair of first grooves, the pair of optical fibers are extended in the third direction so that the partition wall is formed. Can be passed. Therefore, it is possible to arrange the optical receptacle so that the port extends in the third direction while suppressing the bending applied to the pair of optical fibers.

  In one embodiment, the partition wall may be formed with another pair of first grooves extending in a direction symmetrical to the third direction with respect to the first direction. In the optical transceiver of this embodiment, by passing a pair of optical fibers extending from the optical receptacle through a pair of other first grooves, the pair of optical fibers is in a direction symmetrical to the third direction. And can pass through the partition wall. Therefore, in the optical transceiver of this embodiment, it is possible to arrange the optical receptacle so that the port extends in a direction symmetrical to the third direction while suppressing the bending applied to the pair of optical fibers. . That is, it is possible to mount the optical receptacle upside down in the optical transceiver of this embodiment. As a result, the drawing direction of the optical fiber cable in front of the optical transceiver can be changed to a line symmetric with the third direction.

  In one embodiment, a pair of second grooves may be formed in the partition wall. The pair of second grooves extends in the first direction and is arranged in the second direction. In this embodiment, by passing a pair of optical fibers extending from the optical receptacle through the pair of second grooves, the pair of optical fibers extends in the first direction and passes through the partition wall. Is possible. Therefore, in this optical transceiver, an optical receptacle having a port extending in the first direction can be mounted instead of the optical receptacle having the port extending in the third direction. That is, in this optical transceiver, it is possible to share one housing for different optical receptacles having ports extending in different directions.

  In one embodiment, the optical transceiver is a conductive shield member for electromagnetically shielding the first region from the second region, and the optical receptacle and the first receptacle are closed so as to close the pair of second grooves. You may further provide the said shield member clamped between the walls. According to the optical transceiver of this embodiment, when the optical fiber is arranged in the first groove, the second groove can be electromagnetically shielded.

  In one embodiment, the optical receptacle includes a rear surface, the rear surface being a portion of the first wall and facing the portion in which one of the pair of second grooves is formed, and the shield member is a sheet metal A first member made of plastic and a sheet-like second member attached to one main surface of the first member having elasticity, and the shield member is attached to the optical receptacle so that the first member contacts the rear surface It may be attached. According to this embodiment, even when only a part of the shield member is sandwiched between a part of the first wall and the rear surface, both of the pair of second grooves are caused by the rigidity of the first member. The second member can be brought into close contact with the first wall so as to be closed.

  In one embodiment, the first region of the housing may have support means for rotatably supporting the optical receptacle about an axis that is orthogonal to the first direction and the second direction. According to this embodiment, the extending direction of the port of the optical receptacle can be arbitrarily inclined between the first direction and the second direction. Therefore, the optical transceiver of this embodiment can extend the optical fiber cable of the optical connector plug in an oblique direction in front of the optical transceiver.

  In one embodiment, the support means is one of a convex part and a concave part provided along the axis, and the optical receptacle has the other of the convex part and the concave part for pivotally supporting the optical receptacle by the support means. You may do it.

  In one embodiment, the partition wall may define a space for guiding the pair of optical fibers to the second region, and the second direction is longer than the length of the space in the direction parallel to the axis. The length of the space may be long. In this embodiment, a pair of optical fibers extending from the optical receptacle can be guided to the second region through the space. Further, this space is wide in the second direction. That is, the space is configured to receive the oscillation of the optical fiber due to the rotation of the optical receptacle about the axis. Therefore, the movement of the optical fiber accompanying the rotation of the optical receptacle is not hindered.

  In one embodiment, the optical transceiver may further include a conductive shield member including a hollow gasket extending to one open end and the other open end, and the gasket includes a pair of light beams in the space. The fiber is fitted in the space so as to pass through the gasket, and the gasket may be bent from one open end to the other open end. According to the optical transceiver having such a configuration, it is possible to suppress transmission of electromagnetic noise through the space by providing a gasket in a space provided in the partition wall and bending the gasket.

  In one embodiment, the optical transceiver is a pair of sleeves attached to the tips of a pair of optical fibers, the pair of sleeves including a flange portion and a tip portion inserted into the port of the optical receptacle, and the optical receptacle. An engaging pressing member may be further provided, and the optical receptacle and the pressing member may sandwich the flange portion therebetween. According to this embodiment, positioning of the sleeve with respect to the optical receptacle is achieved by the pressing member.

  As described above, according to one aspect of the present invention, a housing for an optical transceiver capable of reducing the space for an optical fiber cable in front of the optical transceiver is provided. According to another aspect of the present invention, there is provided an optical transceiver capable of reducing a space for an optical fiber cable in front thereof.

It is a disassembled perspective view which shows the optical transceiver which concerns on one Embodiment. It is the perspective view which removed the front cover and the 2nd housing, and showed the optical transceiver which concerns on one Embodiment. It is a top view showing the 1st housing and a pair of optical fibers of an optical transceiver concerning one embodiment. It is a perspective view which shows the 1st housing of the housing which concerns on one Embodiment. It is a figure which shows the optical receptacle assembly containing the optical receptacle which concerns on one Embodiment. FIG. 6 is an exploded perspective view of the optical receptacle assembly shown in FIG. 5. It is a perspective view which shows the optical receptacle which concerns on one Embodiment. FIG. 6 is an exploded perspective view showing a shield member separated from the optical receptacle assembly shown in FIG. 5. It is a perspective view of the shield member concerning one embodiment. It is an expansion perspective view of the front side part of the optical transceiver concerning one embodiment. It is a figure which shows the front side part and front cover of the optical transceiver which concern on one Embodiment. It is a figure which shows the path | route of the transmission optical fiber which concerns on one Embodiment. It is a figure which shows the path | route of the optical fiber for reception concerning one Embodiment. It is a perspective view which shows another optical receptacle which can be mounted in the optical transceiver which concerns on one Embodiment. It is a perspective view which shows another optical receptacle which can be mounted in the optical transceiver which concerns on one Embodiment. It is a perspective view which expands and shows the front side part of the optical transceiver which concerns on another embodiment. It is the top view which removed the front cover and the 2nd housing, and showed the front side part of the optical transceiver which concerns on another embodiment. It is a top view of the optical transceiver which shows the state which rotated the optical receptacle from the state shown in FIG. It is a perspective view which shows the 1st housing contained in the housing which concerns on another embodiment. It is a perspective view which shows the optical receptacle for optical transceivers concerning another embodiment. It is a perspective view which expands and shows the front side part of the optical transceiver which concerns on another embodiment. FIG. 22 is a cutaway perspective view of the optical transceiver shown in FIG. 21. It is a figure which shows the cross section along the XXIII-XXIII line | wire of FIG. It is a perspective view which shows the shield board for the transceivers which shine according to another embodiment. FIG. 6 is a perspective view showing a gasket for a glowing transceiver according to another embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals.

  FIG. 1 is an exploded perspective view showing an optical transceiver according to an embodiment. FIG. 2 is a perspective view showing the optical transceiver according to the embodiment with the front cover and the second housing removed. FIG. 3 is a plan view showing a first housing and a pair of optical fibers of the optical transceiver according to the embodiment.

  The optical transceiver 10 shown in FIGS. 1, 2, and 3 is used by being inserted in a Z direction (that is, a first direction) into a cage of a host system. The optical transceiver 10 includes a housing 12, an optical receptacle 14, a plurality of optical transmission subassemblies (TOSA) 16, a plurality of optical reception subassemblies (ROSA) 18, and a pair of optical fibers F1.

  The housing 12 is a metal member such as stainless steel or aluminum. In one embodiment, the housing 12 is separable in the vertical direction (Y direction), and the first housing 20 constituting the lower portion of the housing 12 and the second housing constituting the upper portion of the housing 12. A housing 22 is included.

  FIG. 4 is a perspective view showing a first housing of the housing according to the embodiment. As shown in FIG. 4, in one embodiment, the first housing 20 may include a bottom wall BW, a pair of side walls SW, and a front wall FW. The bottom wall BW constitutes the bottom of the first housing 20 and intersects or substantially orthogonally crosses the Y direction. The pair of side walls SW are provided so as to rise in the Y direction from both edges in the X direction of the bottom wall BW, and intersect or substantially orthogonal to the X direction. The front wall FW is provided so as to rise from a front edge in the Z direction of the bottom wall BW, and intersects or substantially orthogonally intersects the Z direction. The front wall FW can be provided substantially parallel to the front panel of the host system. In the present specification, the X direction indicates the width direction (second direction), the Y direction is a direction orthogonal to the X direction and indicates the vertical direction, and the Z direction is a direction orthogonal to the X direction and the Y direction. And shows the front-rear direction (first direction).

  The front wall FW defines an opening OP1 at the center in the X direction. The first housing 20 includes a first region R1 that is continuous with the opening OP1 in the Z direction. The first housing 20 includes a second region R2 and a third region R3 in addition to the first region R1. The second region R2 is provided between the first region R1 and the third region R3 in the Z direction.

  The first housing 20 has a partition wall W1 that defines a first region R1. The partition wall W1 includes a first wall W11 and a pair of second walls W12. The first wall W11 defines the first region R1 from the rear side in the Z direction, and intersects or is substantially orthogonal to the Z direction. The pair of second walls W12 define a first region R1 from the side, that is, from the X direction. The pair of second walls W12 intersect or substantially orthogonal to the X direction, and are arranged in the X direction.

  A pair of grooves (first grooves) G11 is formed in the partition wall W1. The groove G11 extends in the third direction. The third direction is a direction between the X direction and the Z direction, and is a predetermined direction inclined with respect to the Z direction. A pair of optical fibers F1 can be disposed in the pair of grooves G11.

  In one embodiment, another pair of grooves (another pair of first grooves) G12 is formed in the partition wall W1. The pair of grooves G12 extend in a direction symmetrical to the extending direction of the groove G11, that is, the third direction with respect to the Z direction.

  In one embodiment, a pair of grooves G21 extending in the Z direction is formed in the first wall W11. In the pair of grooves G21, a sleeve extending from an optical receptacle optically coupled to a so-called SC type optical connector plug can be disposed. Accordingly, the pair of grooves G21 are arranged in the X direction at a pitch corresponding to the pitch between the pair of optical fibers of the SC type optical connector plug.

  In one embodiment, a pair of grooves G22 extending in the Z direction is formed between the pair of grooves G21 in the first wall W11. An optical fiber extending from an optical receptacle optically coupled to a so-called LC type optical connector plug can be disposed in the pair of grooves G22. Accordingly, the pair of grooves G22 are arranged in the X direction at a pitch corresponding to the pitch between the pair of optical fibers of the LC type optical connector plug.

  In one embodiment, the pair of grooves G21 and the pair of grooves G22 are provided between the pair of grooves G11 and the pair of grooves G12 in the X direction. For example, as shown in FIG. 4, the pair of grooves G11 is formed in one of the pair of second walls W12 or one of the pair of second walls W12 and the first wall W11 in the vicinity thereof. obtain. The pair of grooves G12 can be formed in the other of the pair of second walls W12 or in the other of the pair of second walls W12 and the first wall W11 in the vicinity thereof.

  The optical receptacle 14 is mounted on the first region R1 defined by the partition wall W1. Hereinafter, reference will be made to FIGS. FIG. 5 is a diagram illustrating an optical receptacle assembly including an optical receptacle according to an embodiment. FIG. 6 is an exploded perspective view of the optical receptacle assembly shown in FIG. FIG. 7 is a perspective view showing an optical receptacle according to an embodiment. FIG. 7A shows a perspective view of the optical receptacle shown so that one end side of the port can be seen. FIG. 7B shows an optical receptacle shown so that the other end side of the port can be seen. A perspective view is shown. FIG. 8 is an exploded perspective view showing the shield member separated from the optical receptacle assembly shown in FIG. FIG. 9 is a perspective view of a shield member according to an embodiment.

  The optical transceiver 10 may include an optical receptacle assembly A14 shown in FIGS. The optical receptacle assembly A14 may include the optical receptacle 14, a pair of sleeves S1, a pressing member 24, and a shield member 26.

  As shown in FIG. 7, the optical receptacle 14 includes a pair of ports 14p. Each of the pair of ports 14p provides a space extending in a predetermined direction. The pair of ports 14p are formed to extend in the third direction when the optical receptacle 14 is mounted in the first region R1 of the housing 12. As shown in FIGS. 5 and 6, an optical connector plug is inserted into the pair of ports 14p from one end side thereof, and a sleeve S1 attached to the tip (one end) of the pair of optical fibers F1 is inserted from the other end side. Inserted. In the port 14p, the pair of optical fibers F1 and the optical fiber of the optical connector plug are optically coupled.

  As shown in FIG. 6, the sleeve S1 is a substantially cylindrical member, and includes a flange portion S1a and a tip portion S1b. The flange portion S1a has a diameter larger than the diameter of the tip portion S1b. That is, a step surface S1c is provided between the flange portion S1a and the tip portion S1b. The tip portion S1b is inserted into the port 14p. A surface with which the step surface S1c abuts is provided in the port 14p.

  The surface S1d of the flange portion S1a opposite to the surface S1c is pressed toward the optical receptacle 14 by the pressing member 24. The pressing member 24 is a sheet metal member. The holding member 24 may include a first portion 24a and four second portions 24b. The first portion 24a contacts the surface S1d of the sleeve S1. In the first portion 24a, a pair of recesses 24d for allowing the pair of optical fibers F1 to pass therethrough is formed.

  As shown in FIG. 6, a plurality of protrusions 14 a are provided on the outer wall surface of the optical receptacle 14. Each of the four second portions 24b of the pressing member 24 is bent along the outer wall surface of the optical receptacle 14 from the four edges of the first portion 24a. In these second portions 24b, holes 24c into which the plurality of protrusions 14a of the optical receptacle 14 are fitted are formed. When the protrusion 14a is fitted into the hole 24c, the pressing member 24 is engaged with the optical receptacle 14, and the flange portion S1a is held between the pressing member 24 and the optical receptacle 14. Accordingly, the sleeve S1 is positioned and held with respect to the optical receptacle 14.

  As shown in FIG. 8, the optical receptacle 14 may further include a rear surface 14b. The rear surface 14b faces the first wall W11 of the partition wall W1. The rear surface 14b has a size that faces only a part of the first wall W11. This part is a part where only one of the pair of grooves G21 and one of the pair of grooves G22 are formed. A shield member 26 is attached to the rear surface 14b.

  As shown in FIG. 9, the shield member 26 includes a first member 28 and a second member 30. The first member 28 is a plate-shaped metal material. The second member 30 is a sheet-like member having elasticity and / or flexibility. The second member 30 is made of, for example, a conductive nonwoven fabric. The second member 30 is attached to one main surface of the first member 28. The shield member 26 is attached to the optical receptacle 14 such that the other main surface of the first member 28 is in contact with the rear surface 14b of the optical receptacle 14.

  In one embodiment, the first member 28 has a hole 28a. On the other hand, as shown in FIG. 8, a protrusion 14 e is formed on the rear surface 14 b of the optical receptacle 14. The protrusion 14e fits into the hole 28a of the first member 28, whereby the shield member 26 is attached to the rear surface 14b of the optical receptacle 14.

  Here, FIG. 10 and FIG. 11 are referred to in addition to FIG. FIG. 10 is an enlarged perspective view of a front portion of the optical transceiver according to the embodiment. FIG. 11 is a diagram illustrating a front portion and a front cover of an optical transceiver according to an embodiment. As shown in FIGS. 5, 8, and 10, the size in the X direction of the shield member 26 is larger than the size in the X direction of the rear surface 14 b of the optical receptacle 14. That is, the shield member 26 contacts substantially the entire first wall W11 so as to close all of the pair of grooves G21 and the pair of grooves G22 formed on the first wall W11. The shield member 26 is sandwiched between the rear surface 14b of the optical receptacle 14 and the first wall W11. More specifically, the shield member 26 receives pressure in the Z direction from the optical receptacle 14 and comes into contact with the first wall W11. In one embodiment, the pressure in the Z direction is exerted from the front cover 32 via the optical receptacle 14.

  As shown in FIG. 11, the front cover 32 is fixed to the front wall FW of the housing 12. For example, the front cover 32 is fixed to the front wall FW of the housing 12 by screwing. The front cover 32 has a front surface 32a orthogonal to the Z direction. The front surface 32a has an opening 32b for exposing the pair of ports 14p of the optical receptacle 14 to the outside. The front cover 32 has a pair of protrusions (not shown) extending in the Z direction on both sides in the X direction of the opening 32b. On the other hand, the optical receptacle 14 has surfaces 14f and 14g orthogonal to the Z direction on both sides in the X direction of the pair of ports 14p. These surfaces 14f and 14g are pressed by the above-described protrusions of the front cover 32, thereby generating the above-described pressure in the Z direction. Due to the pressure in the Z direction, the second member 30 of the shield member 26 comes into close contact with the first wall W11.

  Here, only a part of the shield member 26 is sandwiched between the rear surface 14b and the first wall W11. However, even in a portion that is not sandwiched between the rear surface 14b and the first wall W11, the The second member 30 is in close contact with the first wall W <b> 11 due to the rigidity of the first member 28. Thus, when the second member 30 of the shield member 26 is in close contact with the first wall W11 so as to close the grooves G21 and G22, the first region R1 is electromagnetically shielded from the second region R2. The

  Again referring to FIGS. In one embodiment, the first housing 20 provides fourth regions R4 on both sides in the X direction of the first region R1. The optical multiplexer 34 can be mounted on one fourth region R4, and the optical demultiplexer 36 can be mounted on the other fourth region R4. One end of the pair of optical fibers F1 is coupled to the optical multiplexer 34, and the other end of the other pair of optical fibers F1 is coupled to the optical demultiplexer 36.

  In the optical transceiver 10, four optical signals having different wavelengths are generated by the four TOSA 16 based on the electrical signals. The four optical signals generated by the four TOSA 16 are multiplexed into one optical signal (multiplexed optical signal) by the optical multiplexer 34. Therefore, one end of four optical fibers F <b> 2 for optically coupling the four TOSA 16 and the optical multiplexer 34 is coupled to the optical multiplexer 34. The other ends of the four optical fibers F2 are optically coupled to the four TOSAs 16 respectively. The multiplexed optical signal generated by the optical multiplexer 34 is transmitted from the optical multiplexer 34 through one of the pair of optical fibers F1 to the optical fiber of the optical connector plug inserted into the port 14p of the optical receptacle 14. The electrical signal can be given to the TOSA 16 from a circuit board mounted in the third region R3.

  In the optical transceiver 10, the multiplexed optical signal from the optical fiber of the optical connector plug is transmitted to the optical demultiplexer 36 via the other of the pair of optical fibers F1. The optical demultiplexer 36 decomposes the multiplexed optical signal into four optical signals having different wavelengths included in the multiplexed optical signal, and transmits the four optical signals to the four ROSAs 18 respectively. Therefore, one end of four optical fibers F3 for optically coupling the four ROSAs 18 and the optical demultiplexer 36 are coupled to the optical demultiplexer 36. The other ends of the four optical fibers F3 are optically coupled to the four ROSAs 18 respectively. Each of the four ROSA 18 converts the received optical signal into an electric signal and supplies the electric signal to the circuit board.

  The optical transceiver 10 can handle a multiplexed optical signal of 40 GHz or 100 GHz. In this case, four TOSA 16 and four ROSA 18 can handle 10 GHz or 25 GHz optical signals and electrical signals, respectively.

  The TOSA 16 and the ROSA 18 are mounted in the second region R2 of the first housing 20. In addition, a front tray 38, eight connectors 40, and holders 42 and 44 are mounted in the second region R2. The front tray 38 is provided on the front side of the connector 40 in the Z direction. The eight connectors 40 are provided between the front tray 38 and the holders 42 and 44 in the Z direction.

  The holder 42 is a member for holding the four TOSA 16. The holder 42 is fixed with respect to the first housing 20. The holder 42 has four slots for holding the four TOSA 16. These four slots are arranged in the X direction.

  The holder 44 is a member for holding the four ROSA 18. The holder 44 is fixed with respect to the first housing 20. The holder 44 has four slots for holding the four ROSA 18. These four slots are arranged in the X direction.

  The eight connectors 40 are provided to be aligned in the Z direction with respect to the four slots of the holder 42 and the four slots of the holder 44, respectively. Four of the eight connectors 40 hold the ferrule Ff2 attached to the other end of the four optical fibers F2, and the other four connectors hold the ferrule Ff3 attached to the other end of the four optical fibers F3. To do.

  Each of the eight connectors 40 is engaged with the front tray 38 so as to be movable in the Z direction with respect to the front tray 38 fixed to the first housing 20. When the eight connectors 40 move toward the holder 42 and the holder 44, the connectors 40 engage with the holder 42 and the holder 44. At this time, the ferrules Ff2 and Ff3 are inserted into the sleeves of the TOSA 16 and the ROSA 18, and are optically coupled to the TOSA 16 and the ROSA 18.

  On the other hand, when these connectors 40 move to the front tray 38 side, the connection between the ferrule Ff2 and the ferrule Ff3 and the TOSA 16 and the ROSA 18 is released. At this time, the ferrule Ff2 and the ferrule Ff3 are retracted to a position where they do not interfere with the TOSA 16 and the ROSA 18. Thereby, in the optical transceiver 10, the TOSA 16 and the ROSA 18 can be easily arranged on the holder 42 and the holder 44, and the TOSA 16 and the ROSA 18 can be removed from the holder 42 and the holder 44.

  Hereinafter, the paths of the optical fibers F1, F2, and F3 in the housing will be described with reference to FIGS. 2, 3, 4, 12, and 13. FIG. In the present specification, an area in the housing 12 where the TOSA 16 is arranged in the X direction with respect to the ROSA 18 is called a transmission side, and the housing where the ROSA 18 is arranged in the X direction with respect to the TOSA 16. The area within 12 is sometimes referred to as a receiving side. Also, the optical fiber F2 and the optical fiber F1 coupled to the TOSA 16 via the optical multiplexer 34 may be referred to as transmission optical fibers F2 and F1, respectively. Further, the optical fiber F3 and the optical fiber F1 coupled to the ROSA 18 via the optical demultiplexer 36 may be referred to as receiving optical fibers F3 and F1, respectively.

  First, FIG. 2, FIG. 3, FIG. 4 and FIG. 12 will be referred to. The transmission optical fiber F1 is wired from the first region R1 through one of the pair of grooves G11 toward a position along the transmission side wall SW. From this position, the transmission optical fiber F1 is routed in the Z direction along the transmission side wall SW so as to reach the third region R3. Next, in the third region R3, the transmission optical fiber F1 is directed backward in the Z direction, subsequently, is directed from the transmission side to the reception side in the X direction, and is subsequently bent forward in the Z direction. Are wired from the receiving side to the transmitting side.

  As shown in FIG. 4, grooves G1, G101, G102, and G103 extending in the Z direction are formed in the bottom wall BW on the transmission side of the second region R2. The groove G1 is provided rearward in the Z direction with respect to the grooves G101, G102, and G103. These grooves G101, G102, G103 are arranged in the X direction, branch off from the groove G1, and extend toward the transmission-side region R4.

  2, 3, 4, and 12, the transmission optical fiber F1 then passes through the groove G1 and the groove G102 from the third region R3 to the second region R2, and further to the front tray. Routed below 38 is coupled to the optical multiplexer 34.

  The transmitting optical fiber F2 extends rearward in the Z direction from the optical multiplexer 34, passes under the front tray 38, then passes through the groove G101 or the groove G103, and further passes through the groove G1 to reach the third region R3. It is wired so that.

  Next, the transmission optical fiber F2 is wired so as to change the direction from the transmission side to the reception side in the third region R3 and to reach a position along the reception side wall SW. From this position, the transmission optical fiber F2 is wired so as to advance forward in the Z direction along the side wall SW on the reception side. Next, the transmission optical fiber F2 is guided by the front tray 38 and wired to the corresponding connector 40.

  The front tray 38 has a slot for guiding the optical fibers F2 and F3 to the corresponding connector 40. These slots may be provided with restricting means for preventing the optical fibers F2 and F3 from floating from the front tray 38 in the Y direction. Such restricting means may be provided to face the optical fibers F2 and F3 from above in the Y direction.

  Reference is now made to FIG. 2, FIG. 3, FIG. 4, and FIG. The receiving fiber F1 is wired from the first region R1 through the other of the pair of grooves G11 toward a position along the transmission side wall SW. From this position, the receiving optical fiber F1 is wired in the Z direction along the side wall SW on the transmitting side so as to reach the third region R3. Next, in the third region R3, the receiving optical fiber F1 is wired so as to be moved backward in the Z direction, and subsequently bent from the transmitting side to the receiving side in the X direction and further forward in the Z direction.

  As shown in FIG. 4, grooves G2, G201, G202, and G203 extending in the Z direction are formed in the bottom wall BW on the receiving side of the second region R2. The groove G2 is provided rearward in the Z direction with respect to the grooves G201, G202, and G203. These grooves G201, G202, G203 are arranged in the X direction, branch off from the groove G2, and extend toward the reception-side region R4.

  Referring to FIGS. 2, 3, 4, and 13 again, the receiving optical fiber F1 then passes through the groove G2 and the groove G202 from the third region R3 to the second region R2, and further to the front tray. Routed below 38 is coupled to the optical demultiplexer 36.

  The receiving optical fiber F3 extends rearward in the Z direction from the optical demultiplexer 36, passes below the front tray 38, then passes through the groove G201 or G203, and further passes through the groove G2 to the third region R3. Wired to reach.

  Next, the receiving optical fiber F3 is wired so as to change the direction from the receiving side to the transmitting side in the third region R3 and reach a position along the side wall SW on the transmitting side. From this position, the receiving optical fiber F3 advances forward in the Z direction along the side wall SW on the transmitting side. Next, the receiving optical fiber F3 is guided by the front tray 38 and wired to the corresponding connector 40.

  In the optical transceiver 10, as shown in FIG. 2, the connector 40 and the holders 42 and 44 described above are arranged on the optical fibers F2 and F3 in the second region R2. In the third region, the above-described circuit board is disposed on the optical fibers F1, F2, and F3. Therefore, it is possible to prevent the wired optical fibers F1, F2, and F3 from floating upward in the Y direction.

  The optical transceiver 10 also has a third region R3 as a region for routing the optical fibers F1, F2, and F3. In the third region R3, the extra lengths of the optical fibers F1, F2, and F3 can be processed. The optical transceiver 10 may have another tray for guiding the optical fibers F1, F2, and F3 in the third region R3. Further, the other tray may have a restricting means for restricting the upward lifting of the optical fibers F1, F2, and F3.

  According to the optical transceiver 10 described above, by passing the pair of optical fibers F1 extending from the optical receptacle 14 through the pair of first grooves G11, the pair of optical fibers F1 are moved in the third direction. It is possible to extend and pass the partition wall W1. Therefore, the optical receptacle 14 is attached to the housing 12 so that the port 14p extends in a direction inclined with respect to the Z direction (front-rear direction) (that is, the third direction) while suppressing bending applied to the pair of optical fibers F1. Can be installed. When an optical connector plug is inserted from the outside into the port 14p of the optical receptacle 14, the optical fiber cable of the optical connector plug extends in the third direction in front of the optical transceiver 10, that is, the front panel of the host system. Will be. Therefore, according to this optical transceiver 10, the space for the optical fiber cable in front of the optical transceiver is reduced.

  In the optical transceiver 10, the optical receptacle 14 can be mounted on the first housing 20 by being vertically inverted from the direction shown in FIG. In this case, the pair of optical fibers F1 can be passed through the pair of grooves G12 described above instead of the pair of grooves G11.

  Further, the optical transceiver 10 may be mounted with another optical receptacle shown in FIGS. 14 and 15 are perspective views showing other optical receptacles that can be mounted on the optical transceiver according to the embodiment.

  An optical receptacle 14A shown in FIG. 14 is a so-called LC type optical receptacle. A pair of optical fibers F1A extends in the Z direction from the pair of sleeves S1A inserted into the ports of the optical receptacle 14A. These optical fibers F1A can be wired toward the third region R3 through the groove G22 provided in the second region R2 through the groove G22 of the first wall W11. A shield member 26A for electromagnetically shielding the first region R1 from the second region R2 is sandwiched between the rear surface of the optical receptacle 14A and the first wall W11.

  An optical receptacle 14B shown in FIG. 15 is a so-called SC type optical receptacle. The tip portions of the pair of sleeves S1B are inserted into the ports of the optical receptacle 14B. The rear portions of the pair of sleeves S1B extend in the Z direction and are disposed in the pair of grooves G21 described above. An optical fiber F1B extends in the Z direction from the pair of sleeves S1B. These optical fibers F1B can be wired toward the third region R3 through the groove G4 provided in the second region R2. Further, a shield member 26B for electromagnetically shielding the first region R1 from the second region R2 is sandwiched between the rear surface of the optical receptacle 14B and the first wall W11.

  As described above, a plurality of optical receptacles having ports extending in different types or in different directions can be exchanged and mounted on the optical transceiver 10. That is, the housing 12 can be shared for multiple optical receptacles having ports that extend in different types or in different directions.

  Hereinafter, another embodiment will be described. FIG. 16 is an enlarged perspective view showing a front portion of an optical transceiver according to another embodiment. FIG. 17 is a plan view showing a front portion of an optical transceiver according to another embodiment, with the front cover and the second housing removed. FIG. 18 is a plan view of the optical transceiver showing a state in which the optical receptacle is rotated from the state shown in FIG. The optical transceiver 10C shown in FIGS. 16, 17 and 18 is different from the optical transceiver 10 in that the optical receptacle is rotatably mounted in the first region R1. That is, in the optical transceiver 10C, as shown in FIG. 17, the optical receptacle 14C can be arranged so that the port extends in the first direction (that is, the Z direction). As shown, the optical receptacle 14C can be rotated so that the port 14p extends in a direction between the first direction (ie, the Z direction) and the second direction (ie, the X direction). Hereinafter, the difference between the optical transceiver 10C and the optical transceiver 10 will be described.

  FIG. 19 is a perspective view showing a first housing included in a housing according to another embodiment. As shown in FIG. 19, a recess D1 is provided in the bottom wall BW of the first region R1 of the first housing 20C of the optical transceiver 10C. This recessed part D1 is comprised as a hole extended in the direction (namely, Y direction) substantially orthogonal to Z direction and X direction.

  Further, the first wall W11 of the partition wall W1 of the first housing 20C defines a space SP1. In one embodiment, in order to define the space SP1, the height of the first wall W11 in the Y direction is lower than the height of the second wall W12. The space SP1 provided in this way connects the first region R1 and the second region R2. The space SP1 is provided to guide the pair of optical fibers F1 extending from the optical receptacle 14C to the second region R2, and receives the swing of the pair of optical fibers F1 accompanying the rotation of the optical receptacle 14C. It is like that. For this reason, in one embodiment, the length of the space SP1 in the X direction is longer than the length of the space SP1 in the Y direction. That is, the space SP1 is configured to be wide in the X direction.

  Further, a second region R2 of the first housing 20C is provided with a pair of grooves G5 that replaces the grooves G3 and G4. The pair of grooves G5 are grooves for wiring the pair of optical fibers F1 extending from the optical receptacle 14C toward the third region R3, and extend in the Z direction in the second region R2. Is formed. In one embodiment, the groove G5 is opened at the front end so as to be wider than the rear portion of the front end. That is, the front end of the groove G5 is tapered. By being configured in this shape, the groove G5 is adapted to receive the swing of the pair of optical fibers F1 accompanying the rotation of the optical receptacle 14C.

  FIG. 20 is a perspective view showing an optical receptacle for an optical transceiver according to another embodiment. As shown in FIG. 20, the optical receptacle 14C for the optical transceiver 10C has a convex portion P1 on one surface thereof. The convex portion P1 has a cylindrical shape extending along an axis extending in the Y direction, and is inserted into the concave portion D1 of the first housing 20C. By inserting the convex portion P1 into the concave portion D1, the optical receptacle 14C can rotate about the axis extending in the Y direction. Thereby, in the optical transceiver 10C, the direction of the port 14p of the optical receptacle 14C can be changed to an arbitrary direction between the first direction (that is, the Z direction) and the second direction (that is, the X direction). It is possible.

  Similar to the above-described embodiment, the optical receptacle 14C receives an external optical connector plug inserted into the port 14p from the opening (see FIG. 16) on one end side, that is, the front end. A sleeve S1 is inserted into the port 14p from multiple ends of the port 14p, and the optical fiber F1 held by the sleeve S1 and the optical fiber of the external optical connector plug are optically coupled within the port 14p. The As shown in FIG. 20, a pressing member 24 is engaged with the optical receptacle 14C. The pressing member 24 sandwiches the sleeve S1 between the optical receptacle 14C and the pressing member 24, thereby determining the position of the sleeve S1 in the port 14p.

  FIG. 21 is an enlarged perspective view showing a front portion of an optical transceiver according to another embodiment. 22 is a cutaway perspective view of the optical transceiver shown in FIG. 23 is a view showing a cross section taken along line XXIII-XXIII in FIG. As shown in FIGS. 21 to 23, in one embodiment, the optical transceiver 10C includes a shield member 50 in order to suppress transmission of electromagnetic noise between the first region R1 and the second region R2. Further provisions can be made.

  Hereinafter, FIG. 24 and FIG. 25 will be referred to in addition to FIGS. FIG. 24 is a perspective view showing a shield plate for a glowing transceiver according to another embodiment, and FIG. 25 is a perspective view showing a gasket for the glowing transceiver according to another embodiment. In one embodiment, the shield member 50 includes a shield plate 52 and a gasket 54. As shown in FIG. 24, the shield plate 52 is a conductive member made of a metal plate, and may include a first portion 52a and a pair of second portions 52b. As shown in FIGS. 21 to 23, the shield plate 52 has a first portion 52a along the first wall W11 and a pair of second portions 52b along the second wall W12. In the region R1. By this shield plate 52, various grooves formed in the partition wall W1 are closed, and transmission of electromagnetic noise between the first region R1 and the second region R2 can be suppressed. In addition, an opening 52h is formed in the shield plate 52 so as to be continuous with the space SP1 defined by the partition wall W1.

  As shown in FIG. 25, the gasket 54 is a cylindrical member having conductivity, and extends from one opening end 54a to the other opening end 54b. The gasket 54 is made of a material having conductivity and elasticity, for example. As shown in FIGS. 21 to 23, one opening end 54 a of the gasket 54 is fitted into the opening 52 h of the shield plate 52. The gasket 54 has a wide shape in the X direction, and extends to the second region R2 through the space SP1 defined by the partition wall W1. One optical fiber F1 extending from the optical receptacle 14C is passed through the inner hole of the gasket 54. Further, the gasket 54 is bent between one opening end 54a and the other opening end 54b. Thereby, the gasket 54 makes it possible to suppress transmission of electromagnetic noise between the first region R1 and the second region R2 via the inner hole.

  According to the optical transceiver 10C described above, the extending direction of the port 14p can be inclined within a certain angular range by rotating the optical receptacle 14 in the first region R1. Therefore, according to the optical transceiver 10C, the optical fiber cable of the optical connector plug can be extended obliquely in front of the optical transceiver 10C. As a result, the space for the optical fiber cable in front of the optical transceiver 10C is reduced.

  Although optical transceivers and housings according to various embodiments have been described, various modifications can be made without being limited to the above-described embodiments. For example, in the optical transceiver 10C, the concave portion D1 is provided in the first housing 20C and the convex portion P1 is provided in the optical receptacle 14C, so that the optical receptacle 14C is rotated. A concave portion into which the convex portion is inserted may be provided in the optical receptacle 14C.

DESCRIPTION OF SYMBOLS 10 ... Optical transceiver, 12 ... Housing, A14 ... Optical receptacle assembly, 14 ... Optical receptacle, 16 ... Optical transmitting subassembly (TOSA), 18 ... Optical receiving subassembly, 20 ... First housing, 22 ... Second housing , 24 ... Holding member, 26 ... Shield member, 28 ... First member, 30 ... Second member, 32 ... Front cover, 34 ... Optical multiplexer, 36 ... Optical demultiplexer, 38 ... Front tray, 40 ... Connector, 42, 44 ... holder, W1 ... partition wall, W11 ... first wall, W12 ... pair of second walls, G11 ... pair of grooves (a pair of first grooves), G12 ... pair of grooves (another pair) First groove), G21, G22, a pair of grooves (a pair of second grooves), S1, a pair of sleeves.

Claims (17)

A housing for an optical transceiver,
A front wall having an opening for exposing a port of an optical receptacle for receiving an optical connector plug; and
A first region for mounting the optical receptacle, the first region continuing to the opening in a first direction orthogonal to the front wall;
A second region carrying a plurality of optical subassemblies including an optical transmission subassembly for converting electrical signals into optical signals and an optical receiving subassembly for converting optical signals into electrical signals;
A third region for routing a pair of optical fibers for optically coupling the optical connector plug and the plurality of optical subassemblies;
A partition wall defining the first region, a first wall defining the first region from the rear in a first direction from the first region toward the second region; and A partition wall including a pair of second walls defining the first region from the side;
With
The optical receptacle can be mounted in the first region such that the port extends in a direction between the first direction and a second direction in which the pair of second walls are arranged. is there,
housing.   The housing according to claim 1, wherein a pair of first grooves extending in a third direction between the first direction and the second direction are formed in the partition wall.   The housing according to claim 2, wherein the partition wall is formed with another pair of first grooves extending in a direction symmetrical to the third direction with respect to the first direction.   The pair of second grooves, which are a pair of second grooves extending in the first direction and arranged in the second direction, are formed in the partition wall. Housing.   2. The housing according to claim 1, wherein the first region has support means for rotatably supporting the optical receptacle about an axis extending in a direction orthogonal to the first direction and the second direction.   The partition wall defines a space connecting the first region and the second region, and the partition wall in the second direction is longer than the length in the direction parallel to the axis. The housing of claim 5, wherein the housing is long. An optical receptacle having a pair of ports for receiving optical connector plugs;
The housing according to claim 1, wherein the optical receptacle can be mounted in the first region such that the pair of ports extend in a direction between the first direction and the second direction. A housing;
A plurality of optical subassemblies including an optical transmission subassembly that converts an electrical signal into an optical signal and an optical reception subassembly that converts an optical signal into an electrical signal, the plurality of optical subassemblies mounted in the second region An optical subassembly;
A pair of optical fibers for optically coupling an optical connector plug inserted into the pair of ports of the optical receptacle and the plurality of optical subassemblies, extending from the pair of ports of the optical receptacle The pair of optical fibers routed in the third region;
An optical transceiver comprising: A pair of first grooves extending in a third direction between the first direction and the second direction are formed in the partition wall,
The pair of optical fibers passes through the pair of first grooves,
The optical transceiver according to claim 7.   9. The optical transceiver according to claim 8, wherein the partition wall is formed with another pair of first grooves extending in a direction symmetrical to the third direction with respect to the first direction.   The pair of second grooves, which are a pair of second grooves extending in the first direction and arranged in the second direction, are formed in the partition wall. Optical transceiver. A conductive shield member for electromagnetically shielding the first region from the second region, and between the optical receptacle and the first wall so as to close the pair of second grooves. Further comprising the shield member held between
The optical transceiver according to claim 10. The optical receptacle includes a rear surface that is a part of the first wall and faces the part where one of the pair of second grooves is formed;
The shield member includes a first member made of sheet metal, and a sheet-like second member having elasticity and attached to one main surface of the first member,
The shield member is attached to the optical receptacle so that the first member is in contact with the rear surface.
The optical transceiver according to claim 11.   8. The optical transceiver according to claim 7, wherein the first region of the housing has support means for rotatably supporting the optical receptacle about an axis perpendicular to the first direction and the second direction. 9. The support means is one of a convex portion and a concave portion provided along the axis,
The optical receptacle has the other of a convex part and a concave part for pivotally supporting the optical receptacle by the support means.
The optical transceiver according to claim 13. The partition wall of the housing defines a space for guiding the pair of optical fibers to the second region, and the length in the second direction is greater than the length of the space in a direction parallel to the axis. The length of the space is long,
The optical transceiver according to claim 13 or 14. A conductive shield member including a hollow gasket extending to one open end and the other open end;
The gasket is fitted into the space so that the pair of optical fibers pass through the gasket in the space;
The gasket is bent between the one open end and the other open end.
The optical transceiver according to claim 15. A pair of sleeves attached to the distal ends of the pair of optical fibers, the pair of sleeves including a flange portion and a distal end portion inserted into the port of the optical receptacle;
A presser member that engages with the optical receptacle;
Further comprising
The optical receptacle and the pressing member sandwich the flange portion between them,
The optical transceiver according to any one of claims 7 to 16.