WO2006077648A1 - 光スイッチ - Google Patents
光スイッチ Download PDFInfo
- Publication number
- WO2006077648A1 WO2006077648A1 PCT/JP2005/000854 JP2005000854W WO2006077648A1 WO 2006077648 A1 WO2006077648 A1 WO 2006077648A1 JP 2005000854 W JP2005000854 W JP 2005000854W WO 2006077648 A1 WO2006077648 A1 WO 2006077648A1
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- WO
- WIPO (PCT)
- Prior art keywords
- lens
- guide member
- light guide
- pair
- optical switch
- Prior art date
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- 230000003287 optical effect Effects 0.000 title claims abstract description 164
- 239000013307 optical fiber Substances 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/351—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements
- G02B6/3512—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements the optical element being reflective, e.g. mirror
- G02B6/352—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements the optical element being reflective, e.g. mirror the reflective optical element having a shaped reflective surface, e.g. a reflective element comprising several reflective surfaces or facets that function together
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
- G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
- G02B6/3546—NxM switch, i.e. a regular array of switches elements of matrix type constellation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
- G02B6/3554—3D constellations, i.e. with switching elements and switched beams located in a volume
- G02B6/3556—NxM switch, i.e. regular arrays of switches elements of matrix type constellation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/3564—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3632—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means
- G02B6/3644—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means the coupling means being through-holes or wall apertures
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3648—Supporting carriers of a microbench type, i.e. with micromachined additional mechanical structures
- G02B6/3652—Supporting carriers of a microbench type, i.e. with micromachined additional mechanical structures the additional structures being prepositioning mounting areas, allowing only movement in one dimension, e.g. grooves, trenches or vias in the microbench surface, i.e. self aligning supporting carriers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3664—2D cross sectional arrangements of the fibres
- G02B6/3672—2D cross sectional arrangements of the fibres with fibres arranged in a regular matrix array
Definitions
- the present invention relates to an optical switch suitable for switching optical paths in optical communication, switching laser optical paths in laser processing, and the like.
- Japanese Patent Publication No. 2003-15059 describes an optical switch using a movable prism.
- this optical switch consists of a pair of input optical fibers (2a, 2c) and a pair of output optical fibers (2b, 2d).
- the optical path is switched by inserting and removing the prism 6M into and out of the space between the ends of the optical fiber.By moving the prism 6M straight, the dead space inside the device is reduced, and the entire optical switch is reduced in size. Yes.
- This optical switch is effective when the input optical fiber (2a, 2c) and the output optical fiber (2b, 2d) are arranged on the same axis.
- the optical fiber for output 1 and the optical fiber for output are arranged substantially in parallel, it is necessary to introduce a switching mechanism different from the above.
- Japanese Patent Application Publication No. 2004-37652 shows that the input optical fiber (2a, 2c) and the output optical fiber (2b, 2d) are on the same plane.
- An optical switch for switching the optical path when it is arranged substantially in parallel is described.
- the mirror block 6N used in this optical switch has a reflection part for providing an optical path as shown in FIG. 21 (a) and a reflection part for providing an optical path as shown in FIG. 21 (b). Since the mirror block 6N is moved in the direction indicated by the arrow in FIG. 20, the optical path can be switched.
- an object of the present invention is to provide a new optical switch that uses a fixed light guide member and a movable light guide member and includes an optical path switching mechanism different from the conventional configuration described above.
- an optical switch includes at least three lenses, a lens holding member that holds the lens, a fixed light guide member that is optically coupled to the lens, and a movable light guide member.
- the movable light guide member includes a first position where an optical path is formed between the pair having at least three lenses by using a fixed light guide member, and the at least three lenses by using a movable light guide member. It is movable with respect to the lens between a second position where an optical path is formed between other pairs.
- the switching of the optical path is performed by selecting either the light reflection by the movable light guide member or the light reflection by the fixed light guide member.
- a light guide member can be used. This makes it easier to fine-tune the position of the optical components and provides an optical switch with excellent cost performance.
- the optical paths arranged in the two directions of the horizontal direction and the vertical direction in addition to the optical switch for switching between the two, the optical paths arranged in the two directions of the horizontal direction and the vertical direction.
- a compact optical switch for switching between the two can be provided.
- the fixed light guide member in the first position, reflects the light emitted from one of the pair of lenses and the light reflected by the first reflective part. It is preferable to have a second reflecting portion that reflects toward the other lens.
- a fixed light guide member for example, a fixed light guide member provided with a body formed of a translucent material and a first reflection portion and a second reflection portion provided on a pair of surfaces of the body is used. It is preferable to do.
- the fixed light guide member is formed by a trapezoidal prism, and the first reflecting portion and the second reflecting portion are provided by a pair of inclined surfaces of the trapezoidal prism that are orthogonal to each other.
- the movable light guide member reflects, in the second position, the third reflection part that reflects the light output from one lens of the other pair, and the light reflected by the third reflection part. And a fourth reflection portion that reflects toward the other lens of the pair.
- a movable light guide member for example, a movable light guide member provided with a body formed of a translucent material and a third reflection portion and a fourth reflection portion provided on a pair of surfaces of the body is used. It is preferable to use it.
- the at least three lenses include first, second, third, and fourth lenses that are arranged so that their optical axes are parallel to each other.
- optical paths are formed between the first lens and the second lens, and between the third lens and the fourth lens, and in the second position, between the first lens and the fourth lens, and It is preferable that an optical path be formed between the second lens and the third lens.
- the lens holding member has the first and second optical axes that are parallel to each other in the horizontal and vertical directions. It is preferable to hold the second, third, and fourth lenses.
- the optical path can be switched between a plurality of optical transmission members such as one optical fiber arranged in a matrix.
- the fixed light guide member has one of the first lens and the second lens, and one of the third lens and the fourth lens in the first position. At least a pair of reflecting portions (for example, reflecting the pair of obtained reflected light toward the other of the first lens and the second lens and the other of the third lens and the fourth lens, respectively)
- the movable light guide member reflects light emitted from one of the first lens and the fourth lens and from one of the second lens and the third lens in the second position.
- at least a pair of reflection portions (for example, 63 and 65 in FIG. 4) that reflect the obtained pair of reflected lights toward the other of the first lens and the fourth lens and toward the other of the second lens and the third lens, respectively.
- the angle formed by the at least one pair of reflection parts of the fixed light guide member and the angle formed by the at least one pair of reflection parts of the movable light guide member are respectively right angles.
- a fixed light guide member having a relatively simple geometric shape as shown in FIG. 3 and a movable light guide member can be used, so that an optical switch excellent in cost performance can be provided.
- the movable light guide member has an axis ("X" in FIG. 3) extending in parallel with the at least one pair of reflection portions of the fixed light guide member.
- an optical path can be formed between lenses that are spaced apart in the vertical direction by using a fixed light guide member, while in the second position, the movable light guide member can be formed. Since the optical path can be formed between the lenses that are spaced apart in the horizontal direction by use, the degree of freedom in designing the optical path using the optical switch can be improved.
- the fixed light guide member is a first reflecting portion that reflects light emitted from the first lens in the first position (50).
- a second reflection part (51) for reflecting light emitted from the third lens, a third reflection part (51) for reflecting light reflected by the first reflection part toward the second lens, (2) a fourth reflecting portion (50) for reflecting the light reflected by the reflecting portion toward the fourth lens, and the movable light guide member is light emitted from the first lens in the second position.
- the fifth reflection part (63) that reflects light, the sixth reflection part (65) that reflects the light reflected by the fifth reflection part toward the fourth lens, and the sixth reflection part force also pass through the space (21).
- the optical path is formed through the space provided in the movable light guide member, the moving distance of the movable light guide member relative to the lens holding member can be shortened, and as a result, the light guide member is arranged in a matrix.
- a compact optical switch that can switch the optical path between multiple optical transmission members such as a single optical fiber can be provided.
- the fixed light guide member of the optical switch includes a single reflection surface (50) that provides the first reflection portion and the fourth reflection portion, and a single reflection surface that provides the second reflection portion and the third reflection portion. It is preferable that the angle formed between the reflecting surfaces is a right angle.
- the movable light guide member of the optical switch includes a pair of blocks (60, 62) each having two reflecting portions that are orthogonal to each other, and a reflecting portion force of one block, and a reflecting portion of the other block. It is preferable that the connecting member (61) which connects the pair of blocks so as to be separated from each other via a space.
- the concept of reflection in the present invention includes total reflection and reflection by a mirror coat.
- the difference in refractive index for example, the difference in refractive index between the translucent member and air
- the reflection angle satisfy a certain condition. If so, it is a phenomenon that causes reflection, and this phenomenon is used for reflection of prisms and the like.
- reflection by the mirror coat makes it possible to reflect light on an arbitrary surface by applying the mirror coat. Even when the refractive index difference and the reflection angle between the translucent member and the reflection-side member do not satisfy the total reflection condition, it is possible to reflect by applying a mirror coat. Therefore, in this case, it can also be applied to a non-translucent member.
- FIG. 1 (a) and (c) are a longitudinal sectional view, a transverse sectional view, and a front view of an optical switch that works on the first embodiment of the present invention.
- FIG. 2 is a perspective view of a lens holding member integrally formed with a lens of an optical switch.
- FIG. 3 (a) and (c) are a perspective view, a side view, and a front view of a fixed prism of an optical switch.
- FIG. 4 (a) One (c) is a perspective view, a top view and a front view of a movable prism of an optical switch.
- FIGS. 5A and 5B are a perspective view and a conceptual diagram for explaining an optical path formed at the first position of the movable prism.
- FIGS. 6] (a) and (b) are a perspective view and a conceptual diagram for explaining an optical path formed at the second position of the movable prism.
- FIGS. 7A and 7B are perspective views showing other examples of the fixed light guide member.
- FIG. 8 (a) -1 (d) is a perspective view showing another example of the movable light guide member.
- FIG. 9 (a) and (b) are perspective views showing other examples of the lens holding member.
- FIG. 10 (a) and (b) are a longitudinal sectional view and a transverse sectional view of an optical switch which applies force to the second embodiment of the present invention.
- FIG. 11 (a) and (b) are a perspective view and a cross-sectional view showing a lens holding member of the present embodiment.
- FIG. 12 (a) and (b) are a perspective view and a top view of a fixed prism of an optical switch.
- FIGS. 13A and 13B are a perspective view and a top view of the movable prism of the optical switch.
- FIG. 14 (a) and (b) are a perspective view and a conceptual diagram for explaining an optical path formed at the first position of the movable prism.
- FIG. 15 (a) and (b) are a perspective view and a conceptual diagram illustrating an optical path formed at the second position of the movable prism.
- FIG. 16 (a) -1 (c) is a perspective view showing another example of the fixed light guide member.
- FIGS. 17 (a) and 17 (b) are perspective views showing other examples of the movable light guide member.
- FIG. 18 is a perspective view showing another example of the lens holding member.
- FIGS. 19 (a) and 19 (b) are explanatory views of a conventional optical path switching mechanism of an optical switch.
- FIG. 20 is a perspective view showing another conventional optical switch block.
- FIGS. 21 (a) and 21 (b) are explanatory views of the optical path switching mechanism of the optical switch of FIG.
- 2X2 optical fibers (2a-2d) are arranged so that the optical axes are parallel to each other in the horizontal and vertical directions.
- a matrix array is formed.
- the four lenses (4a to 4d) and the lens holding member 10 are integrally molded products in which these lenses are embedded in a cubic lens holding member 10, as shown in FIG. This facilitates the assembly work of the optical switch.
- a fixed prism having a trapezoidal cross section is used as the fixed light guide member 5 as shown in FIGS. 3 (a) to 3 (c).
- the fixed prism 5 reflects the light provided from the lens 4a in the first position, reflects the obtained reflected light toward the lens 4b, and also provides the light provided from the lens 4c.
- the fixed prism 5 includes a pair of trapezoid side surfaces 52, a top surface 53 having the upper side of the trapezoid as one side, a lower surface 54 having the lower side of the trapezoid as one side, and a pair extending between the upper surface and the lower surface.
- the slanted surfaces (50, 51) are crossed at right angles.
- the inclined surfaces of the fixed prism 5 are referred to as reflecting surfaces (50, 51), respectively.
- the fixed prism 5 is arranged so that the trapezoidal lower surface 54 faces the lens (4a 4d) through a space for taking in and out the movable prism 6.
- “X” is the axis of the fixed prism 5 parallel to the pair of reflecting surfaces (50, 51).
- the movable light guide member 6 as shown in FIGS. 4 (a) and 4 (c), a pair of trapezoidal prisms (60, 62) each having a similar shape to the fixed prism 5 described above.
- a movable prism having a shape formed by coupling them together through a connecting portion 61 is used.
- the movable prism 6 includes, in the second position, a reflection surface 63 that reflects the light provided from the lens half, and a reflection surface 65 that reflects the light reflected by the reflection surface 63 toward the lens 4d.
- the reflecting surface 63 and the reflecting surface 65 are provided by a pair of inclined surfaces of the trapezoid prism 60 located on the upper side, and the reflecting surface 64 and the reflecting surface 66 are provided by a pair of inclined surfaces of the trapezoid prism 62 located on the lower side.
- the angle between the reflecting surface 63 and the reflecting surface 65 and the angle between the reflecting surface 64 and the reflecting surface 66 are each a right angle.
- the movable prism 6 is arranged so that the lower surface including the bottom of the trapezoidal prism faces the lens (4a 4d). Such a movable prism 6 can be manufactured relatively easily by removing the central part of the pair of inclined surfaces of the large trapezoidal prism.
- “Y” is the axis of the movable prism that extends parallel to these reflecting surfaces.
- the actuator 7 is not particularly limited as long as the movable prism 6 can be moved in the vertical direction.
- the movable prism 6 can be moved in and out of the space between the fixed prism 5 and the lens (4a-4d) by driving the arm 70 having the movable prism fixed to the tip. Also, in the first position, an optical path is formed between the lenses (4a and 4b, 4c and 4d) spaced apart in the vertical direction by using the fixed prism 5, and in the second position by using the movable prism 6.
- the movable prism 6 is arranged so that the axis X of the fixed prism 5 is orthogonal to the axis Y of the movable prism 6.
- reference numeral 72 denotes a terminal used for energizing the coil of the actuator.
- the operation of the optical switch will be described.
- the movable prism 6 fixed to the tip of the arm 70 is moved upward by the actuator 7 in the space between the lens (4a 4d) and the fixed prism 5
- the lens (4a-4d) And the fixed prism 5 are optically coupled.
- the light provided from the optical fiber 2a through the lens 4a is reflected between the reflecting surface 63 and the reflecting surface 64 of the movable prism 6.
- the light reflected by the reflecting surface 50 of the fixed prism 5 and reflected by the reflecting surface 50 is reflected by the reflecting surface 51 of the fixed prism 5 and travels toward the lens 4b through the space 20 therebetween.
- the moving distance upward of the movable prism 6 is shortened to reduce the height dimension of the optical switch.
- the reflection surface 50 of the fixed prism 5 is shared by the reflection of light provided through the lens 4a and the directional reflection of the light reflected by the reflection surface 51 to the lens 4d.
- the reflecting surface 51 of the fixed prism 5 is shared by the reflection of the light provided via the reflecting surface 50 and the reflection of the light reflected by the reflecting surface 50 on the lens 4b.
- the light provided from the optical fiber 2a through the lens 4a is reflected by the reflecting surface 50 of the fixed prism 5 through the space 20 between the reflecting surface 63 and the reflecting surface 64.
- the light reflected by the reflecting surface 50 is reflected by the reflecting surface 51 of the fixed prism 5 toward the lens 4b, and the light provided from the optical fiber 2d through the lens 4d is reflected by the reflecting surface 65 and
- the light reflected by the reflecting surface 50 of the fixed prism 5 through the space 21 between the reflecting surface 66 and the light reflected by the reflecting surface 50 is reflected by the reflecting surface 51 of the fixed prism 5 and is directed to the lens 4c. You may do it.
- the lens (4a-4d) is acceptable.
- the moving prism 6 is optically coupled.
- the light provided from the optical fiber 2a through the lens 4a is reflected by the reflecting surface 63 of the movable prism 6, and is reflected by the reflecting surface.
- the light reflected by 63 is reflected by the reflecting surface 65 of the movable prism 6 and travels toward the lens 4d.
- an optical path is formed between the lens 4a and the lens 4d.
- the light provided from the optical fiber 2c through the lens 4c is reflected by the reflecting surface 66 of the movable prism 6, and the light reflected by the reflecting surface 66 is reflected by the reflecting surface 64 of the movable prism 6. Head toward lens 4b. As a result, an optical path is formed between the lens 4b and the lens 4c. In this way, in the second position, an optical path is formed between the lenses (4a and 4d, 4b and 4c) spaced apart in the horizontal direction.
- the cross section of the trapezoidal shape is used.
- a prism having a right-angled isosceles triangle section having right-angled corners where the reflecting surfaces are orthogonal to each other may be used.
- a reflection part on the surface of these plate materials for example, a thin L-shaped member composed of a pair of reflection surfaces (50, 51) formed by a mirror coat or a rectangular parallelepiped body as shown in FIG. 56, a recess 57 formed in the body, and a pair of reflecting surfaces (50, 51) obtained by applying a reflecting coat (for example, a mirror coat) to a pair of inclined surfaces in the recess Member.
- a force using a movable prism 6 in which a pair of trapezoidal prisms (60, 62) are integrally formed via a connecting portion 61 made of the same optical material is shown in Fig. 8 (a).
- the movable prism 6 may be formed by joining a pair of trapezoidal prisms (60, 62) via a connecting member 67 formed of a material different from the material constituting the prism.
- the dimension of the connecting member 67 is determined such that a predetermined space (20, 21) necessary for forming the optical path in the first position is provided between the trapezoidal prisms (60, 62).
- another preferable movable light guide member 6 of the optical switch of the present embodiment is, for example, a pair of plate members that are connected so that the crossing angle is a right angle, as shown in FIG. 8 (b).
- 68 a pair of notches 69 provided at a predetermined position of the plate material for use in forming the optical path at the first position, and a reflection surface (63-66) formed as a reflection portion on the surface of the plate material
- a reflective coating member comprising a pair of reflecting surfaces (63 and 65, 64 and 66) obtained by applying a) and a connecting member 82 for connecting the pair of bodies.
- a relatively simple prism is used, in which the cross section is trapezoidal and the reflecting surfaces (63 and 64, 65 and 66) are provided by a pair of inclined surfaces. May be.
- the optical path forming space (20, 21) at the first position is not provided, the moving distance of the movable prism 6 by the actuator 7 is slightly increased, but the movable prism 6 has substantially the same shape as the fixed prism 5. Since prism 6 can be used, an optical switch with excellent cost performance can be provided.
- a hemispherical lens or a lens block in which a spherical lens is embedded in the lens holding member 10, or an individually molded lens or GRIN lens as shown in Fig. 9 (b) are substantially rectangular.
- a lens block accommodated inside the cylindrical lens holding member 11 may be employed.
- the optical path switching mechanism between four (2 ⁇ 2) optical fibers has been described.
- the number of optical fibers introduced into the optical switch is four. It is not limited to books.
- the size of the fixed prism and movable prism described above can be increased, and the number of prisms and the number of reflecting surfaces provided on the prism can be increased. .
- an optical switch that can be used in this embodiment includes a plurality of optical fibers (in this embodiment, 2a , 2b, 2c, and 2d), and a plastic housing 1 with an opening at one end, and four collimating lenses (4a, 4b, 4c, 4d), a lens holding member 10 that holds these lenses, a fixed light guide member 5 that is optically coupled to the lens, and a movable light guide member 6 that is movably held with respect to the lens holding member. And a first position where an optical path is formed between the optical fibers adjacent in the lateral direction by using the fixed light guide member 5, and another optical fiber adjacent in the horizontal direction by using the movable light guide member 6.
- 1x4 optical fibers (4a, 4b, 4c, 4d) are arranged so that their optical axes are parallel to each other on the same horizontal plane.
- a linear array is formed.
- the lens holding member 10 is pressed against the upper surface of the lower block 13 having four lens housing V grooves 12 formed on the upper surface, and the lens in the V groove. And an upper block 14 for holding.
- each of the fixed prisms has an upper surface and a lower surface of an isosceles triangle and a pair of side surfaces having an intersection angle of 90 degrees, and the reflecting surfaces (50A and 51A, 50B and 51B) are these.
- the fixed prism 5 is arranged so that the remaining side surfaces other than the side surface used as the reflecting surface face the lens (4a-4d) through a space for taking in and out the movable lens 6.
- the movable prism As the movable light guide member 6, as shown in FIGS. 13 (a) and 13 (b), a movable prism having a trapezoidal cross section is used. As will be described later, this movable prism simultaneously forms an optical path between the lens 4a and the lens 4d and between the lens 4b and the lens 4c in the second position.
- the movable prism includes a pair of trapezoid side surfaces 60A, a top surface 61A having the upper side of the trapezoid as one side, a lower surface 62A having the lower side of the trapezoid as one side, and a pair extending between the upper surface and the lower surface.
- the crossing angle between the inclined surfaces is a right angle, and the two optical paths in the second position described above are simultaneously provided by a pair of reflecting surfaces composed of these inclined surfaces. .
- the movable prism 6 is disposed so that the lower surface 62A faces the lens (4a-4d) in the second position.
- a force using a prism having a trapezoidal cross section to reduce the size of the movable lens instead, a cross section having a right-angled corner where the reflecting surfaces (63A, 64A) are orthogonal to each other.
- a right angled isosceles triangle prism may be a movable prism.
- the actuator 7 is not particularly limited as long as the movable prism 6 can be moved in the vertical direction.
- the movable prism 6 is fixed to the fixed prism 5 and the lens (4a—) by driving the arm 70 having the movable prism 6 fixed to the tip. Can be taken in and out of the space between 4d).
- reference numeral 72 denotes a terminal used for energizing the coil of the actuator. If the base is assembled in the housing after the lens holding member 10, the fixed prism 5, and the actuator 7 are installed on the base, the optical switch can be assembled easily and efficiently.
- the operation of the optical switch will be described.
- the movable prism 6 fixed to the tip of the arm 70 is also removed by the space 7 between the lens (4a 4d) and the fixed prism 5
- the lens (4a-4d) and a pair of fixed Prism 5 is optically coupled It is.
- the light provided from the optical fiber 2a via the lens 4a is a pair of reflecting surfaces (50A) of one fixed prism 5. , 51A) to lens 4b.
- an optical path is formed between the adjacent lenses 4a and 4b.
- the light provided from the optical fiber 2c through the lens 4c travels to the lens 4d through the pair of reflecting surfaces (50B, 51B) of the other fixed prism 5.
- an optical path is formed between the adjacent lenses 4c and 4d.
- an optical path is formed between the lenses (4a and 4b, 4c and 4d) adjacent in the horizontal direction.
- the lens (4a 4d) and the movable prism 6 are optically coupled.
- the light provided from the optical fiber 2a via the lens 4a is a pair of reflecting surfaces (63A, 64A) of the movable prism 6.
- the lens 4a and the lens 4d are a pair of reflecting surfaces (63A, 64A) of the movable prism 6.
- an optical path is formed between the lens 4a and the lens 4d.
- the light provided from the optical fiber 2c via the lens 4c is directed to the lens 4b via the pair of reflecting surfaces (64A, 63A) of the movable prism 6.
- an optical path is formed between the lens 4b and the lens 4c. In this way, the optical path is formed at the second position in a different lens combination (4a and 4d, 4b and 4c) than in the first position separated in the horizontal direction.
- the pair of triangular prisms 83 are integrated with the side surfaces of the rectangular parallelepiped connecting member 84 made of a translucent material, as shown in FIG.
- each of the thin L-shaped members 85 includes a pair of plate members 89 connected so that the crossing angle is a right angle, and a reflective surface formed by a mirror coat, for example, as a reflection portion on the surface of these plate members. (50A and 51A, 50B and 51B). Furthermore, as shown in FIG.
- a rectangular parallelepiped body 87 and a pair of recesses 88 formed in the body it is also preferable to use a single reflective coating member composed of reflective surfaces (50A and 51A, 50B and 51B) formed by mirror coating, for example, on the pair of inclined surfaces in each recess 88. ,.
- the reflective coating member include a reflective surface (63A, 64A) formed by mirror coating on a pair of inclined surfaces in the recess.
- a GRIN lens may be disposed in the V groove 12 of the lens holding member 10 instead of the molded lens.
- the lens holding member 10 composed of a pair of upper and lower blocks (13, 14), as shown in FIG. 18, a lens block in which a hemispherical lens or a spherical lens is held in a line in the lens holding member 10 is used. It may be adopted.
- the force S described for the optical path switching mechanism between four (1 ⁇ 4) optical fibers is It is not limited to four.
- the number of optical fibers that need to be switched is increased, the number of fixed prisms described above can be increased or the size of the movable prism can be increased.
- the optical switch of the present invention is compact and has excellent cost performance with a high degree of freedom in optical path design. Therefore, switching of an optical signal in optical communication and switching of a transmission optical path with the same optical energy as in laser processing are possible. It is expected to be used for a wide range of applications.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA2005800468311A CN101103296A (zh) | 2005-01-24 | 2005-01-24 | 光开关 |
JP2006553804A JP4655045B2 (ja) | 2005-01-24 | 2005-01-24 | 光スイッチ |
US11/795,759 US20090290834A1 (en) | 2005-01-24 | 2005-01-24 | Optical Switch |
PCT/JP2005/000854 WO2006077648A1 (ja) | 2005-01-24 | 2005-01-24 | 光スイッチ |
CA002601355A CA2601355A1 (en) | 2005-01-24 | 2005-01-24 | Optical switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/000854 WO2006077648A1 (ja) | 2005-01-24 | 2005-01-24 | 光スイッチ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006077648A1 true WO2006077648A1 (ja) | 2006-07-27 |
Family
ID=36692046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/000854 WO2006077648A1 (ja) | 2005-01-24 | 2005-01-24 | 光スイッチ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090290834A1 (ja) |
JP (1) | JP4655045B2 (ja) |
CN (1) | CN101103296A (ja) |
CA (1) | CA2601355A1 (ja) |
WO (1) | WO2006077648A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018173673A1 (ja) * | 2017-03-21 | 2018-09-27 | 株式会社フジクラ | 光ループバック部材及び光ループバックコネクタ |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9217831B1 (en) * | 2009-12-15 | 2015-12-22 | Kotura, Inc. | Optical system having dynamic waveguide alignment |
CN103823301B (zh) * | 2012-11-16 | 2016-05-11 | 福州高意通讯有限公司 | 一种n×m光开关 |
TW201421006A (zh) * | 2012-11-22 | 2014-06-01 | Hon Hai Prec Ind Co Ltd | 光學耦合透鏡以及光學耗散系數測量系統 |
JP5931141B2 (ja) * | 2014-08-26 | 2016-06-08 | ファナック株式会社 | ファイバコアを切り替え可能なレーザ加工装置 |
TWI548224B (zh) | 2015-12-23 | 2016-09-01 | 合鈞科技股份有限公司 | 具分光功能之集成式光學元件以及光收發模組 |
Citations (4)
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JPS5930101U (ja) * | 1982-08-18 | 1984-02-24 | 富士通株式会社 | 光スイツチ |
JP2001272612A (ja) * | 2000-03-28 | 2001-10-05 | Sun Tec Kk | 光スイッチ装置 |
JP2003233025A (ja) * | 2002-02-13 | 2003-08-22 | Furukawa Electric Co Ltd:The | 光スイッチ |
JP2004021012A (ja) * | 2002-06-18 | 2004-01-22 | Fujitsu Ltd | 空間光結合型の入出力光学系および光スイッチ |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3870754B2 (ja) * | 2001-04-27 | 2007-01-24 | 松下電工株式会社 | 光スイッチ |
US7040814B2 (en) * | 2001-10-15 | 2006-05-09 | The Furukawa Electric Co., Ltd. | Functional optical module |
JP4055492B2 (ja) * | 2002-07-01 | 2008-03-05 | オムロン株式会社 | 光スイッチ |
-
2005
- 2005-01-24 JP JP2006553804A patent/JP4655045B2/ja not_active Expired - Fee Related
- 2005-01-24 CA CA002601355A patent/CA2601355A1/en not_active Abandoned
- 2005-01-24 US US11/795,759 patent/US20090290834A1/en not_active Abandoned
- 2005-01-24 CN CNA2005800468311A patent/CN101103296A/zh active Pending
- 2005-01-24 WO PCT/JP2005/000854 patent/WO2006077648A1/ja not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5930101U (ja) * | 1982-08-18 | 1984-02-24 | 富士通株式会社 | 光スイツチ |
JP2001272612A (ja) * | 2000-03-28 | 2001-10-05 | Sun Tec Kk | 光スイッチ装置 |
JP2003233025A (ja) * | 2002-02-13 | 2003-08-22 | Furukawa Electric Co Ltd:The | 光スイッチ |
JP2004021012A (ja) * | 2002-06-18 | 2004-01-22 | Fujitsu Ltd | 空間光結合型の入出力光学系および光スイッチ |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018173673A1 (ja) * | 2017-03-21 | 2018-09-27 | 株式会社フジクラ | 光ループバック部材及び光ループバックコネクタ |
JP2018156004A (ja) * | 2017-03-21 | 2018-10-04 | 株式会社フジクラ | 光ループバック部材及び光ループバックコネクタ |
Also Published As
Publication number | Publication date |
---|---|
JPWO2006077648A1 (ja) | 2008-06-19 |
CA2601355A1 (en) | 2006-07-27 |
US20090290834A1 (en) | 2009-11-26 |
JP4655045B2 (ja) | 2011-03-23 |
CN101103296A (zh) | 2008-01-09 |
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