JP5382936B2 - Optical receptacle module and method for manufacturing optical receptacle module - Google Patents

Description

  The present invention relates to an optical receptacle module and a method for manufacturing an optical receptacle module.

  In recent years, with the increase in the speed of optical communication and the like, the optical output of a semiconductor laser or an optical amplifier used for optical communication tends to be increased. The optical output is, for example, 100 mW or more, and may exceed 1 W. The light output having such a high output is required to be handled more safely.

  When high output light is transmitted from the connection end face side of the optical connector fitted to one side of the adapter to the optical connector side fitted to the other side of the adapter, the light receiving side When the optical connector is accidentally disconnected, there is a concern that light to be transmitted to the optical connector side leaks from the optical connector insertion port to the outside of the adapter.

  The same problem is also a concern when the optical connector fitted to the optical receptacle module housing is accidentally disconnected. In contrast, an adapter with a light-shielding shutter and an optical receptacle module with a light-shielding shutter that can prevent leakage of light transmitted toward the optical connector even when the optical connector is disconnected, and that are inexpensive and relatively easy to manufacture. Has been proposed.

  In the proposed optical receptacle module with a light-shielding shutter, etc., the adapter and the optical receptacle module have a cylindrical housing and a shutter plate having a rising portion that blocks light transmitted toward the optical connector insertion port side of the housing And have. When the optical connector is not fitted into the adapter, the rising portion of the shutter plate blocks light.

  For this reason, even if the optical connector is accidentally disconnected during optical communication, the light can be blocked by the shutter plate, so that it is possible to prevent light from leaking from the optical receptacle module or the like to some extent.

  The shutter plate is a substantially L-shaped plate including a rising plate and a bottom plate provided along the bottom outer wall of the housing. The shutter plate is sandwiched between a support plate having a bottom plate provided along the bottom outer wall of the housing and side plates rising from the bottom plate along both side walls of the housing, and a bottom outer wall of the housing. Secure with.

  In the proposed optical module receptacle with a light-shielding shutter and the like, the shutter plate is fixed to the housing in this way, so that the shutter plate and the support plate can be easily manufactured and attached, and the adapter with the light-shielding shutter and the light receptacle with the light-shielding shutter are provided. It is said that the module can be manufactured easily and with a high yield.

  The above-described optical receptacle module with a light-shielding shutter is disclosed in, for example, Patent Document 1 below.

JP 2001-194562 A

  However, in the conventional optical receptacle module with a light-shielding shutter, not only the number of parts increases but the structure becomes complicated, but there is still a concern that the output light leaks, so that light leakage can be prevented more reliably. In that sense, there was room for further improvement.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide an optical receptacle module and a method for manufacturing the optical receptacle module that can more reliably prevent light leakage with a simple structure.

  The optical receptacle module of the present invention includes an optical receptacle module that optically couples with an inserted plug ferrule, a first fiber stub with one end gripped by a sleeve, and a first fiber stub when the plug ferrule is not inserted. And a second fiber stub provided in the sleeve so as to be separated from each other.

  In the optical receptacle module of the present invention, preferably, when the plug ferrule is inserted into the sleeve, one end of the second fiber stub is in contact with the plug ferrule and the other end of the second fiber stub is the first fiber stub. The sleeve is slid in the insertion direction with respect to the first fiber stub so as to abut against and optically couple.

  More preferably, the optical receptacle module of the present invention is such that when the plug ferrule is pulled out of the sleeve, the sleeve is separated from the first fiber stub so that the second fiber stub is separated from the first fiber stub. It is characterized by sliding in the pulling direction.

  The optical receptacle module of the present invention is more preferably characterized in that the frictional force between the plug ferrule and the sleeve is larger than the frictional force between the first fiber stub and the sleeve.

  The optical receptacle module of the present invention is more preferably characterized in that the second fiber stub is fixed to the sleeve.

  The optical receptacle module of the present invention is more preferably characterized in that the diameter of the sleeve portion that holds the first fiber stub is larger than the diameter of the sleeve portion that holds the plug ferrule when the plug ferrule is inserted. .

  The optical receptacle module of the present invention is more preferably characterized in that the diameter of the first fiber stub gripped by the sleeve is smaller than the diameter of the plug ferrule gripped by the sleeve when the plug ferrule is inserted. .

  In the optical receptacle module of the present invention, more preferably, the sleeve is a precision sleeve or a split sleeve.

  The optical receptacle module of the present invention further preferably includes a photodiode for receiving input light from the inserted plug ferrule.

  The optical receptacle module of the present invention further preferably includes a laser diode that outputs light to an inserted plug ferrule.

  In the optical receptacle module of the present invention, more preferably, when the plug ferrule is not inserted, the separation distance between the first fiber stub and the second fiber stub is 1.0 mm to 1.5 mm. And

  The optical receptacle module of the present invention is more preferably characterized in that the leakage light intensity is attenuated to 1/30 or less due to the separation between the first fiber stub and the second fiber stub when the plug ferrule is not inserted. .

  The optical receptacle module of the present invention is more preferably characterized in that the pull-out strength for the sleeve of the plug ferrule is 500 g to 550 g, and the pull-out strength for the sleeve of the first fiber stub is 200 g to 250 g.

  An optical receptacle module manufacturing method according to the present invention is a method for manufacturing any one of the above-described optical receptacle modules, wherein the plug ferrule is pulled out from the sleeve in accordance with the optical output intensity of the optical receptacle module. The method includes a step of determining a slidable range of the sleeve so as to adjust a separation distance between the first fiber stub and the second fiber stub.

  According to the present invention, it is possible to provide an optical receptacle module and a method of manufacturing the optical receptacle module that can prevent light leakage more reliably with a simple structure.

It is a conceptual diagram which illustrates typically the cross-sectional structure of the optical receptacle module concerning 1st embodiment. It is a conceptual diagram explaining the sleeve position of the state which pulled out the external line connector from the optical receptacle module. It is a conceptual diagram which illustrates typically the cross-sectional structure of the optical receptacle module concerning 2nd embodiment. It is a conceptual diagram which illustrates typically the cross-sectional structure of the optical receptacle module concerning 3rd embodiment. It is a conceptual diagram which illustrates typically the cross-sectional structure of the optical receptacle module concerning 4th embodiment. It is a figure which illustrates the variation which can be used for a sleeve. It is a conceptual diagram which illustrates typically the cross section of a common optical receptacle module. It is a flowchart explaining the characteristic process of the manufacturing method of an optical receptacle module.

  The optical receptacle module described in the embodiment mediates optical coupling between the external line side and the first fiber stub when the external line side connector is inserted, and the first when the external line side connector is pulled out. A second fiber stub that is spaced apart from the fiber stub and releases optical coupling.

  In the optical receptacle module, when the outer line side connector is inserted, the sleeve slides in the insertion direction, so that the second fiber stub is in contact with the first fiber stub and the other end is on the outer line side. Abuts against the plug ferrule of the connector.

  In addition, when the outer line side connector is pulled out, the optical fiber module is separated from the first fiber stub by one end of the second fiber stub by sliding the sleeve in the pulling direction. When the second fiber stub is separated from the first fiber stub, an air layer gap exists on the optical axis, so that the light intensity leaking from the optical receptacle module to the outside thereof is significantly attenuated. Can do.

(First embodiment)
FIG. 1 is a conceptual diagram schematically illustrating a cross-sectional structure parallel to the optical axis of the optical receptacle module 100 (1) according to the first embodiment.

  In FIG. 1, an optical receptacle module 100 (1) includes a first fiber stub 20 having one end gripped by a sleeve 10 (1). Further, the optical receptacle module 100 (1) includes a second fiber stub 30 at a substantially central portion of the sleeve 10 (1).

The sleeve 10 (1) has a length L ₁ and is arranged in the housing 50 so as to be slidable in the optical axis direction within a sliding range of the length L. That is, the sliding distance that the sleeve 10 (1) slides is L ₂ (= L−L ₁ ).

  In FIG. 1, an external connector 60 is connected to the optical receptacle module 100 (1), and therefore the plug ferrule 40 is inserted into the sleeve 10 (1). As shown in FIG. 1, when the plug ferrule 40 is inserted into the sleeve 10 (1), the sleeve 10 (1) is inserted into the sleeve 10 (1) by the frictional force between the plug ferrule 40 and the sleeve 10 (1). Slide on the optical axis in the direction.

When the sleeve 10 (1) slides by the sliding distance L ₂ , the second fiber stub 30 comes into contact with the first fiber stub 20. Subsequently, the plug ferrule 40 and the second fiber stub 30 come into contact with each other when the plug ferrule 40 is further inserted into the sleeve 10 (1).

  Thereby, the optical receptacle module 100 (1) in the state shown in FIG. 1 sequentially outputs the optical output of the laser diode 80 to the half mirror 90, the first fiber stub 20, the second fiber stub 30, and the plug ferrule 40. To the external connector 60. In FIG. 1, reference numeral 70 denotes a photodiode for detecting received light intensity.

  In addition, the second fiber stub 30 is illustrated as being disposed at a substantially central portion of the sleeve 10 (1). A stub 30 may be arranged. However, the second fiber stub 30 is preferably disposed substantially at the center of the sleeve 10 (1) in the sense of enhancing durability against lateral loads including wiggle characteristics.

  FIG. 2 is a conceptual diagram illustrating the position of the sleeve 10 (1) in a state in which the external line connector 60 is pulled out from the optical receptacle module 100 (1). When the external connector 60 is pulled out from the optical receptacle module 100 (1), the plug ferrule 40 pulls out the sleeve 10 (1) on the optical axis by the frictional force between the plug ferrule 40 and the sleeve 10 (1). Slide in the direction.

Sleeve 10 (1) in response to the slides in the pulling direction by the sliding distance L _2, the second fiber stub 30 moves a distance L ₂ only withdrawal direction together with the sleeve 10 (1). Thus, the first fiber stub 20 and the second fiber stub 30, and thus away by sliding distance L _2.

  The sleeve 10 (1) is prevented from sliding on the inner wall surface of the recess where the sleeve of the housing 50 is disposed, and stops at that position, that is, at the left end in the sliding range L in the drawing. Subsequently, the plug ferrule 40 is pulled out from the stopped sleeve 10 (1) by pulling out the external connector 60 from the optical receptacle module 100 (1).

As shown in FIG. 2, in a state where the external connector 60 is pulled out from the optical receptacle module 100 (1), a first fiber stub 20 and the second fiber stub 30 is spaced sliding distance L _2. For this reason, the optical output of the laser diode 80 transmitted from the first fiber stub 20 to the second fiber stub 30 is significantly reduced. Therefore, the optical output leaking to the outside of the optical receptacle module 100 (1) through the second fiber stub 30 can be substantially blocked.

Here, when the first fiber stub 20 and the second fiber stub 30 are separated by 1.0 mm, that is, when the sliding distance L ₂ = 1.0 mm, the optical receptacle module 100 (1) is used. The light output is reduced by about 15 dB, and the light intensity is about 1/30.

Further, the optical receptacle module 100 (1) is used when the first fiber stub 20 and the second fiber stub 30 are separated by 1.5 mm, that is, when the sliding distance L ₂ = 1.5 mm. The optical output is reduced by about 20 dB, and the light intensity becomes about 1/100. Therefore, the optical receptacle module 100 (1) can substantially block the leaked light output to the outside that may cause adverse effects even when the external connector 60 is disconnected unexpectedly. is there.

(Second embodiment)
FIG. 3 is a conceptual diagram schematically illustrating a cross-sectional structure parallel to the optical axis of the optical receptacle module 100 (2) according to the second embodiment. 3, parts corresponding to those in FIGS. 1 and 2 are denoted by the corresponding reference numerals, and the description thereof is omitted here in order to avoid duplication of explanation.

  As shown in FIG. 3, in the sleeve 10 (2) of the optical receptacle module 100 (2), the inner diameter of the portion where the first fiber stub 20 is inserted is different from the inner diameter of the portion where the plug ferrule 40 is inserted. .

  That is, the inner diameter of the sleeve 10 (2) where the first fiber stub 20 is inserted is larger than the inner diameter of the sleeve 10 (2) where the plug ferrule 40 is inserted.

  By providing a difference in the inner diameter of the sleeve 10 (2) as described above, the sleeve 10 (2) can be used even when the first fiber stub 20 and the plug ferrule 40 have the same diameter. 20 and the plug ferrule 40 generate different frictional forces.

  In the optical receptacle module 100 (2) shown in FIG. 3, when the plug ferrule 40 is inserted into the sleeve 10 (2), a relatively large frictional force between the plug ferrule 40 and the sleeve 10 (2) causes the sleeve 10 ( 2) slides on the optical axis in the insertion direction of the plug ferrule 40.

When the sleeve 10 (2) slides by sliding distance L _2, the movement of the sleeve 10 (2) is blocked to the inner wall end recess is disposed sleeve, the second fiber stub 30 is first fiber Abuts the stub 20. Subsequently, the plug ferrule 40 and the second fiber stub 30 come into contact with each other when the plug ferrule 40 is further inserted into the sleeve 10 (2).

  As a result, the optical receptacle module 100 (2) outputs the optical output of the laser diode 80 through the half mirror 90, the first fiber stub 20, the second fiber stub 30, and the plug ferrule 40 in order. Can be communicated to.

  Further, when the plug ferrule 40 is pulled out from the optical receptacle module 100 (2), the plug ferrule 40 causes the sleeve 10 (2) to move due to a relatively large frictional force between the plug ferrule 40 and the sleeve 10 (2). Slide on the optical axis in the pulling direction.

Sleeve 10 (2) in response to sliding the drawing direction by sliding distance L _2, the second fiber stub 30 moves a distance L ₂ only withdrawal direction together with the sleeve 10 (2). Thus, the first fiber stub 20 and the second fiber stub 30, and thus away by sliding distance L _2.

  Further, the sleeve 10 (2) is prevented from sliding on the inner wall surface of the recess where the sleeve of the housing 50 is disposed, and stops at that position, that is, the left end in the sliding range L in the drawing. Subsequently, by performing an operation of pulling out the plug ferrule 40 from the optical receptacle module 100 (2), the plug ferrule 40 is pulled out from the stopped sleeve 10 (2).

  Since the optical receptacle module 100 (2) has a difference in the inner diameter of the sleeve 10 (2), the pull-out strength between the sleeve 10 (2) and the plug ferrule 40 is less than that of the sleeve 10 (2). The pulling strength between the fiber stub 20 becomes larger. Accordingly, when the plug ferrule 40 is pulled out, the sleeve 10 (2) slides stably and well on the optical axis in the pulling direction, and accordingly, the second fiber stub 30 is more reliably connected. It can be separated from the first fiber stub 20.

  Here, the pullout strength of the plug ferrule 40 is generally determined in the standard to be in the range of 200 g to 600 g. For this reason, the optical receptacle module 100 (2) has a relatively large pull-out strength difference, that is, a difference in frictional force within the standard range, in compliance with the pull-out strength standard. It shall occur on both sides of 10 (2).

  In FIG. 3, a typical example in which the inner diameter of the sleeve 10 (2) gradually decreases (tapered) from the portion where the second fiber stub 30 is disposed toward one end where the plug ferrule 40 is inserted. Although shown, it is not limited to this. For example, a small step may be provided in the inner diameter of the sleeve 10 (2), and the inner diameter may be changed stepwise.

  In FIG. 3, the difference in the inner diameter of the sleeve 10 (2) is exaggerated and conceptually shown for explanation. However, as long as the sliding operation of the sleeve 10 (2) during the pulling-out operation described above causes a difference in frictional force that can reliably separate the first fiber stub 20 and the second fiber stub 30. Therefore, it is preferable that the inner diameter difference is as small as possible. The inner diameter difference of the sleeve 10 (2) can be set to a difference within, for example, about several microns, and is preferably set to an inner diameter difference of about 1 micron.

(Third embodiment)
FIG. 4 is a conceptual diagram schematically illustrating a cross-sectional structure parallel to the optical axis of the optical receptacle module 100 (3) according to the third embodiment. 4, portions corresponding to those in FIGS. 1 to 3 are denoted by corresponding reference numerals, and the description thereof is omitted here in order to avoid duplication of description.

As shown in FIG. 4, in the optical receptacle module 100 (3), the diameter _{R 20} of the first fiber stub 20 (3) is smaller than the diameter _{R 40} of the plug ferrule 40 (3). That is, R ₄₀ > R ₂₀ is satisfied.

  For this reason, even if the inner diameter of the sleeve 10 (3) is constant and has no difference at both ends, the sleeve is more effective than the frictional force between the sleeve 10 (3) and the first fiber stub 20 (3). The frictional force between 10 (3) and the plug ferrule 40 (3) is greater. Therefore, when the plug ferrule 40 (3) is pulled out, the sleeve 10 (3) slides more reliably and stably on the optical axis in the pulling direction.

Accordingly, the second fiber stub 30 is, the first fiber stub 20 (3), will be separated by sliding distance L ₂ of the sleeve 10 (3), to effectively suppress the leakage of light output Can do. Since the operation of the sleeve 10 (3) in the optical receptacle module 100 (3) is the same as that in the first embodiment described above, the description thereof is omitted here to avoid duplication of explanation.

(Fourth embodiment)
FIG. 5 is a conceptual diagram schematically illustrating a cross-sectional structure parallel to the optical axis of the optical receptacle module 100 (4) according to the fourth embodiment. In FIG. 5, parts corresponding to those in FIGS. 1 to 4 are denoted by the corresponding reference numerals, and the description thereof is omitted here to avoid duplication of explanation.

  As shown in FIG. 5, in the optical receptacle module 100 (4), the second fiber stub 30 (4) is fixed with the sleeve 10 (4) and the adhesive 35. For this reason, when the sleeve 10 (4) slides, the second fiber stub 30 (4) fixed to the sleeve 10 (4) moves more reliably together with the sleeve 10 (4). preferable.

  As understood from FIG. 5, when the sleeve 10 (4) slides to the first fiber stub 20 side to the limit position of the sliding range L, one end of the second fiber stub 30 (4). And the first fiber stub 20 abut.

  Subsequently, a plug ferrule (not shown) is further inserted deeply into the sleeve 10 (4), so that the plug ferrule contacts the other end of the second fiber stub 30 (4) in the sleeve 10 (4). , An optical coupling is formed.

On the other hand, when pulling out a plug ferrule (not shown), the sleeve 10 (4) and the second fiber stub 30 (4) fixed thereto are caused by the frictional force between the plug ferrule and the sleeve 10 (4). moves in the pull-out direction on the optical axis by sliding distance L _2. Thus, by the first fiber stub 20 and the one end of the second fiber stub 30 (4) is spaced by a distance L ₂ to release the optical coupling, Rezadaio from the optical receptacle module 100 (4) - de 80 It is possible to reliably suppress the leakage of light.

  FIG. 6 is a diagram illustrating variations that can be used for the sleeves 10 (1), 10 (2), 10 (3), and 10 (4). 6A is a cross-sectional view illustrating the precision sleeve 610 (1) in a plane perpendicular to the optical axis, and FIG. 6B illustrates the split sleeve 610 (2) in a plane perpendicular to the optical axis. FIG. The split sleeve 610 (2) is preferable in the sense that it can more flexibly cope with plug ferrules of various thicknesses.

FIG. 7 is a conceptual diagram schematically illustrating a cross section parallel to the optical axis of a general optical receptacle module 700. As can be understood from FIG. 7, in a general optical receptacle module 700, a sleeve 710 having a length L ₁ is fixed to the housing 750.

  For this reason, when the plug ferrule 740 is pulled out, there is a concern that the optical output of the laser diode 780 is emitted via the half mirror 790 and the fiber stub 720 through the fiber stub 720 and leaks. In FIG. 7, reference numeral 770 denotes a photodiode.

(Method for manufacturing optical receptacle module)
The characteristic steps of the manufacturing method of the optical receptacle module 100 (1), 100 (2), 100 (3), 100 (4) (hereinafter collectively referred to as the optical receptacle module 100) will be described with reference to FIG. . FIG. 8 is a flowchart for explaining the characteristic steps of the method for manufacturing the optical receptacle module 100.

(Step S810)
It is determined whether the designed light output required for the optical receptacle module 100 is relatively large. If the designed optical output required for the optical receptacle module 100 is relatively large, the process proceeds to step S820. If the designed optical output required for the optical receptacle module 100 is not relatively large, the process proceeds to step S830.

(Step S820)
The sliding range L of the sleeve 10 is designed to be relatively large. That is, the length in the optical axis direction of the arrangement recess of the sleeve 10 provided in the housing 50 is made relatively large. As a result, the sleeve 10 can slide relatively large, so that the distance between the first fiber stub 20 and the second fiber stub 30 is relatively large. Therefore, even in the optical receptacle module 100 having a relatively large light output, it is possible to effectively and reliably reduce the leakage light output.

(Step S830)
The sliding range L of the sleeve 10 is designed to be relatively small. That is, the length of the arrangement recess of the sleeve 10 provided in the housing 50 in the optical axis direction is made relatively small. As a result, the sleeve 10 can be slid relatively small, so that the distance between the first fiber stub 20 and the second fiber stub 30 is relatively small. Accordingly, the optical receptacle module 100 that requires a relatively small light output can be reduced in size and weight while reducing the leaked light output as necessary and sufficiently.

(Step S840)
The sleeve placement recess having the length L in the optical axis direction designed in step S820 or step S830 described above is formed inside the housing 50.

(Step S850)
The sleeve 10 is disposed in the sleeve placement recess of the housing 50 formed in step S840.

  In each of the embodiments described above, the optical receptacle module 100 preferably has a pullout strength of the plug ferrule 40 with respect to the sleeve 10 of 500 g to 550 g, and a pullout strength of the first fiber stub 20 with respect to the sleeve 10 of 200 g to 250 g. On the other hand, the frictional force between the sleeve 10 and the sleeve placement recess inside the housing 50 is reduced as much as possible. Thereby, when the plug ferrule 40 is pulled out from the sleeve 10, the sleeve 10 can slide in the sleeve placement recess inside the housing 50 more smoothly.

  Since the optical receptacle module 100 is not provided with a light shielding plate or the like outside, there is no need to add any restrictions or conditions to the apparatus on which the optical receptacle module 100 is mounted. In addition, it is preferable that a device for mounting the optical receptacle module 100 does not need to be provided with a mechanism for shielding leaked light.

  Furthermore, since the optical receptacle module 100 can be the same in size and shape as a conventional optical module in appearance, it does not require a design change or the like on mounting, and is highly versatile. Further, since the optical receptacle module 100 does not include a light shielding shutter or a light shielding plate, even during maintenance such as cleaning of the second fiber stub 30, a cotton swab or the like can be easily inserted from the insertion opening of the plug ferrule 40 as in the past. Cleaning is possible.

  The optical receptacle module 100 described in each of the first to fourth embodiments is not limited to the description in each embodiment, and the optical receptacle module 100 appropriately incorporating the characteristic items of each embodiment. Can be configured.

  Further, the optical receptacle module 100 and the manufacturing method thereof in each of the above-described embodiments are not limited to the description in each embodiment, and the operation and configuration may be appropriately changed within a self-evident range. The shape, structure, combination thereof, and material may be appropriately changed within a range.

  The present invention can be widely applied to general optical modules such as an optical connector and an optical receptacle module.

  10 (1) .. Sleeve, 20..First fiber stub, 30..Second fiber stub, 35..Adhesive, 40..Plug ferrule, 50..Housing, 60..External connector, 70 .. Photodiode, 80 .. Laser diode, 90 .. Half mirror, 100 (1) .. Optical receptacle module.

Claims (14)

In the optical receptacle module that optically couples with the inserted plug ferrule,
A first fiber stub with one end gripped by a sleeve;
A second fiber stub included in the sleeve regardless of whether or not the plug ferrule is inserted so that the plug ferrule is separated from the first fiber stub when the plug ferrule is not inserted into the sleeve;
The first fiber stub and the second fiber stub always maintain the same central axis in the same sleeve regardless of whether or not the plug ferrule is inserted ,
When pulling out the plug ferrule, when the sleeve slides due to the frictional force between the plug ferrule and the sleeve, the sleeve and the second fiber stub are integrally formed on the optical axis in the same pulling direction. The optical receptacle module is characterized by being moved by a distance of . The optical receptacle module according to claim 1.
When the plug ferrule is inserted into the sleeve, one end of the second fiber stub is in contact with the plug ferrule, and the other end of the second fiber stub is in contact with the first fiber stub. The optical receptacle module, wherein the sleeve slides in the insertion direction with respect to the first fiber stub so as to be optically coupled. The optical receptacle module according to claim 1 or 2,
When the plug ferrule is pulled out of the sleeve, the sleeve slides in the pulling direction with respect to the first fiber stub so that the second fiber stub is separated from the first fiber stub. An optical receptacle module characterized by moving. The optical receptacle module according to any one of claims 1 to 3,
The optical receptacle module, wherein a frictional force between the plug ferrule and the sleeve is larger than a frictional force between the first fiber stub and the sleeve. The optical receptacle module according to any one of claims 1 to 4,
The optical receptacle module, wherein the second fiber stub is fixed to the sleeve. The optical receptacle module according to any one of claims 1 to 5,
An optical receptacle module, wherein a diameter of the sleeve portion that holds the first fiber stub is larger than a diameter of the sleeve portion that holds the plug ferrule when the plug ferrule is inserted. The optical receptacle module according to any one of claims 1 to 6,
The optical receptacle module, wherein the diameter of the first fiber stub gripped by the sleeve is smaller than the diameter of the plug ferrule gripped by the sleeve when the plug ferrule is inserted. The optical receptacle module according to any one of claims 1 to 7,
The optical receptacle module, wherein the sleeve is a precision sleeve or a split sleeve. The optical receptacle module according to any one of claims 1 to 8,
An optical receptacle module comprising a photodiode for receiving input light from the inserted plug ferrule. The optical receptacle module according to any one of claims 1 to 9,
An optical receptacle module comprising: a laser diode that outputs light to the inserted plug ferrule. The optical receptacle module according to any one of claims 1 to 10,
The optical receptacle module, wherein when the plug ferrule is not inserted, a separation distance between the first fiber stub and the second fiber stub is 1.0 mm to 1.5 mm. The optical receptacle module according to any one of claims 1 to 11,
The optical receptacle module, wherein when the plug ferrule is not inserted, the leakage light intensity is attenuated to 1/30 or less due to the separation between the first fiber stub and the second fiber stub. The optical receptacle module according to claim 4.
The pull-out strength of the plug ferrule with respect to the sleeve is 500 g to 550 g, and the pull-out strength of the first fiber stub with respect to the sleeve is 200 g to 250 g. A method of manufacturing the optical receptacle module according to any one of claims 1 to 13,
Corresponding to the optical output intensity of the optical receptacle module, the spacing distance between the first fiber stub and the second fiber stub when the plug ferrule is pulled out from the sleeve is adjusted. A method of manufacturing an optical receptacle module, comprising a step of determining a slidable range of the sleeve.

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