CN107346052B - Optical module and optical apparatus having the same - Google Patents
Optical module and optical apparatus having the same Download PDFInfo
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- CN107346052B CN107346052B CN201610301753.5A CN201610301753A CN107346052B CN 107346052 B CN107346052 B CN 107346052B CN 201610301753 A CN201610301753 A CN 201610301753A CN 107346052 B CN107346052 B CN 107346052B
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- optical
- light
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- optical module
- wedge
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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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/422—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements
- G02B6/4227—Active alignment methods, e.g. procedures and algorithms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
An optical module and an optical apparatus having the same, the optical module being disposed between a light emitting element and a light transmitting element, comprising: an optical base, which is provided with a total reflection surface and a convergence surface; the optical wedge is provided with a light splitting surface and an emergent surface opposite to the light splitting surface, wherein a first air gap is formed between the light splitting surface and the optical base, and a second air gap is formed between the emergent surface and the optical base; the incident light reflected by the total reflection surface firstly travels in the optical base, passes out of the optical base and then is projected to the light splitting surface through the first air slit, wherein part of light is reflected on the light splitting surface to provide monitoring light; and the other part of the light is deflected by the optical wedge, passes through the second air gap, reenters the optical base and is aligned to the light transmission element through the converging surface. The invention is beneficial to the flexible adjustment of the splitting ratio.
Description
Technical Field
The present invention relates to optical devices, and more particularly, to an optical module for coupling an optical transmission signal to an optical fiber and facilitating adjustment of a splitting ratio.
Background
Chinese patent CN200480006859.8 discloses a monolithic optical module for an optical component, said optical module comprising: a total internal reflection interface surface that redirects an incident light beam through a predetermined angle; at least one beam splitter surface formed by an interface surface between an air gap and the optical module, the beam splitter surface partially reflecting an incident beam to provide a partially reflected beam and partially refracting the incident beam to provide a partially refracted beam; and at least one integration surface that provides precise alignment of the monolithic optical module and components of the optical assembly that are external to the monolithic optical module. The design provides a reflected light beam by the surface of a light splitter on the optical module, the splitting ratio is fixed and difficult to adjust, and the design cannot flexibly adapt to the requirements of different application occasions. It can be seen that there is a real need for improvements.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned shortcomings of the prior art, and provides an optical module with an optical wedge and an optical apparatus having the optical module, which are advantageous for flexibly adjusting the splitting ratio.
The present invention provides an optical module, disposed between a light emitting device and a light transmitting device, for coupling light emitted from the light emitting device to an end surface of the light transmitting device; the optical module includes: an optical base provided with a total reflection surface for deflecting the light incident to the optical base by a predetermined angle and a converging surface for directing the outgoing light to the light transmission element; wherein, the optical base is also added with an optical wedge, the optical wedge is provided with a light splitting surface and an emergent surface opposite to the light splitting surface, a first air gap is formed between the light splitting surface and the optical base, and a second air gap is formed between the emergent surface and the optical base; the incident light reflected by the total reflection surface firstly travels in the optical base, passes out of the optical base and then is projected to the light splitting surface through the first air slit, wherein part of light is reflected on the light splitting surface to provide monitoring light; and the other part of the light is deflected by the optical wedge, passes through the second air gap, reenters the optical base and is aligned to the light transmission element through the converging surface.
In some embodiments, the light splitting surface is coated with a light splitting film, and the light splitting surface and the exit surface are obliquely intersected to form an included angle.
In some embodiments, the optical wedge is a free-standing hexahedron having a bottom side, a top side, and two sides connected between the light splitting surface and the exit surface, respectively; the bottom side surface and the top side surface are both rectangular, and the bottom side surface is smaller than the top side surface; both the two side surfaces are trapezoidal.
In some embodiments, the angle between the dispersing surface and the exit surface ranges between 6 and 10 degrees.
In some embodiments, the optical wedge is mounted on the optical base obliquely downward; light exiting outwardly from the exit surface of the optical wedge is angled upwardly with respect to light incident on the light splitting surface.
In some embodiments, the optical base is provided with a first mounting surface that is attached to the light splitting surface of the optical wedge, and the first mounting surface extends obliquely downward at an inclination angle.
In some embodiments, the width of the first mounting surface is just suitable for matching with the optical wedge, and the optical base is further provided with an operating space which is outwards concave on two sides of the first mounting surface.
In some embodiments, the top surface of the optical base is recessed with a recess and a cavity communicating with the recess, the first mounting surface forms a bottom surface of the recess, and the cavity is recessed downward and opens in a middle portion of the first mounting surface.
In some embodiments, the first air gap is formed by the cavity and the second air gap is formed by the recess.
In some embodiments, the optical module further comprises a cover plate covering the recess for closing the second air gap.
In some embodiments, the light transmitting element is an optical fiber; the optical base is formed by integral injection molding, the front end of the optical base is provided with an optical fiber sleeve and a clamping and fixing flange which is arranged outwards and convexly from the periphery of the optical fiber sleeve, and the optical fiber sleeve is provided with a butt-joint cavity corresponding to the convergent surface and used for correspondingly accommodating the optical fiber.
The present invention further provides an optical apparatus, which includes the optical module, a circuit board for mounting the optical module, and a light emitting device and a monitoring device mounted on the circuit board and used in cooperation with the optical module, wherein the monitoring device is used for receiving the monitoring light emitted from the optical module, and the emitting power of the light emitting device can be adjusted according to the light intensity of the monitoring light.
Compared with the prior art, the invention can conveniently change the light splitting ratio by replacing different optical wedges by arranging double air gaps and matching with the design of the optical wedges, thereby being beneficial to flexibly adjusting the light splitting ratio; in addition, the light can be deflected by the optical wedge to upwards adjust the reflection position of the incident light on the total reflection surface, which is beneficial to the miniaturization design of the optical base.
Drawings
FIG. 1 is a perspective view of a preferred embodiment of the optical device of the present invention.
FIG. 2 is a bottom view of a preferred embodiment of the optical module of the present invention.
Fig. 3 is a cross-sectional view taken along line C-C of fig. 2 with the cover plate removed.
FIG. 4 is a light path diagram of a preferred embodiment of the optical module of the present invention.
Fig. 5 is an enlarged schematic view of a portion D in fig. 3.
FIG. 6 is an exploded perspective view of an optical base and an optical wedge in a preferred embodiment of the optical module of the present invention.
FIG. 7 is a perspective view of an optical wedge in a preferred embodiment of the optical module of the present invention.
Wherein the reference numerals are as follows: 100 optical device 10 optical module 20 optical module 30 circuit board 40 processing circuit 1 optical base 2 optical wedge 4 cover 7 light source 8 monitoring element 9 optical path 11 bottom surface 12 top surface 13 incident lens 14 total reflection surface 15 first air slit 16 second air slit 17 exit lens 18 clamping flange 19 optical fiber sleeve 124 first recess 126 second recess 128 cavity 1263 second mounting surface 1265 operating space 1281 opening 151 light entrance 199 docking cavity 21 light splitting surface 22 exit surface 23 bottom side surface 24 top side surface 25, 26 side surface 9 optical path 90 optical axis 91 light source emitted light 92 converged incident light 93 total reflection incident light 94 transmission light 95 split reflected light 96 split reflected light 94 97 outgoing light 99 before the outgoing light 98 of the optical wedge is converged.
Detailed Description
While this invention is susceptible of embodiment in different forms, there is shown in the drawings and will herein be described in detail, specific embodiments thereof with the understanding that the present description is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to that as illustrated.
Thus, a feature indicated in this specification is intended to describe one of the features of an embodiment of the invention and does not imply that every embodiment of the invention must have the described feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.
In the embodiments shown in the drawings, directional references (such as upper, lower, left, right, front and rear) are used to explain the structure and movement of the various elements of the invention, rather than absolute, and relative. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.
The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a preferred embodiment of the optical apparatus 100 of the present invention is shown, wherein the optical apparatus 100 is a Chip On Board (COB) module structure, which includes an optical module 10 for implementing light emission transmission; an optical module 20 for implementing optical receiving and transmitting; a circuit board 30 for mounting the optical modules 10, 20 and a processing circuit 40 mounted on the circuit board 30 and cooperating with the optical modules 10, 20. The circuit board 30 is also provided with a light emitting element 7 and a monitoring element 8 (see fig. 4) for cooperating with the optical module 10. The light emitting element 7 is preferably a laser light emitting diode and the monitoring element 8 is preferably a photodiode. The emission power of the light emitting element 7 is adjustable according to the light intensity of the monitoring light provided by the monitoring element 8.
Referring to fig. 2, 3, 5 and 6, the optical module 10 includes an optical base 1, an optical wedge 2 attached to the optical base 1, and a cover plate 4 covering the top of the optical base 1.
The optical base 1 is formed by integral injection molding of transparent optical plastic, and is provided at a front end thereof with an optical fiber sleeve 19 for abutting an optical fiber (not shown) and a clamping flange 18 projecting from an outer circumference of the optical fiber sleeve 19. The optical base 1 has a bottom surface 11 and a top surface 12 opposite to each other, an incident lens 13 disposed on the bottom surface 11, a total reflection surface 14 disposed above the incident lens 13, an exit lens 17 (having a convex curved converging surface) formed in front of the total reflection surface 14, and a docking cavity 199 disposed in front of the exit lens 17. In this embodiment, the optical fiber sleeve 19 is integrally formed on the optical base 1, and can be firmly butted with another optical fiber component (not shown) through the clamping flange 18. While in other embodiments the fiber optic ferrule 19 may be a separate component from the optical bench 1.
Referring to fig. 7 in combination, the optical wedge 2 is a separate hexahedron having opposite splitting surfaces 21 and an exit surface 22, a bottom side 23, a top side 24 and two sides 25, 26 connected between the splitting surfaces 21 and the exit surface 22, respectively. The optical wedge 2 is preferably made of a different optical material than the optical base 1 and has a different optical refractive index. The optical wedge 2 is installed between the total reflection surface 14 of the optical base 1 and the exit lens 17, and a first air gap 15 is formed between the light splitting surface 21 and the optical base 1, and a second air gap 16 is formed between the exit surface 22 and the optical base 1.
The top surface 12 of the optical base 1 is recessed with a first recess 124 at a position corresponding to the total reflection surface 14. The top surface 12 of the optical base 1 is recessed with a second recess 126 and a cavity 128 communicating with the second recess 126 at the positions corresponding to the first air slit 15 and the second air slit 16.
The bottom surface of the second recess 126 includes a first mounting surface 1262 and a second mounting surface 1263. The first mounting surface 1262 is formed on the optical base 1 from back to front with a downward inclination, and the optical wedge 2 is correspondingly attached to the first mounting surface 1262. The first mounting surface 1262 has a width that fits the optical wedge 2, and the second recess 126 has an operating space 1265 on each side of the first mounting surface 1262. In the present embodiment, the operating space 1265 is a semi-cylindrical structure recessed to one side of the first mounting surface 1262. The cavity 128 is recessed downwardly relative to the first mounting surface 1262. The cavity 128 defines an opening 1281 in a central portion of the first mounting surface 1262.
The aforementioned first air gap 15 is formed by this cavity 128. The second air gap 16 is formed by the second recess 126. The interface 151 of the first air gap 15 forms a light exit, and the light deflected by the total reflection surface 14 passes through the interface 151 and enters the first air gap 15, that is, the light transmission medium is converted into air in the first air gap 15 by the optical plastic material forming the optical base 1; wherein the interface 151 preferably extends in a substantially vertical downward direction (i.e., approximately only 2 to 5 degrees from vertical) to facilitate the draft operation in forming the optical bench 1 and to reduce reflection of totally reflected incident light 93. The interface 161 of the second air gap 16 constitutes a light entrance through which light is re-incident on the optical base 1, i.e. the light transmitting medium is converted from the air in the second air gap 16 into the optical plastic material constituting the optical base 1. The convexly curved interface of the exit lens 17 constitutes a converging surface for directing light re-incident on the optical base 1 towards the end face of a light-transmitting element (not shown in the figures, i.e. an optical fiber inserted in the docking cavity 199) for coupling light from the light-emitting element 7 to the light-transmitting element. The cover plate 4 (see also fig. 1 in conjunction with fig. 5) covers the second concave portion 126 to close the second air gap 16, so that dust can be prevented from entering therein and affecting the transmission of the light path 9.
Referring to fig. 7, the optical wedge 2 is also integrally injection molded from a transparent optical plastic, and the light splitting surface 21 and the exit surface 22 are rectangular. The bottom side 23 and the top side 24 are also rectangular, and the area of the bottom side 23 is smaller than that of the top side 24. Both sides 25, 26 are trapezoidal. The angle 29 between the splitting surface 21 and the exit surface 22 preferably ranges between 6 and 10 degrees. In this embodiment, the angle 29 between the splitting surface 21 and the exit surface 22 is 8.8 degrees.
The light splitting surface 21 can be plated with different light splitting films according to the requirement of the light splitting ratio. When the optical wedge 2 is mounted to the optical base 1, the beam splitting surface 21 abuts the first mounting surface 1262 and the bottom side 23 abuts the second mounting surface 1263. The area of the dispersing surface 21 is larger than the area of the opening 1281 of the cavity 128 so that the optical wedge 2 can adhere the dispersing surface 21 to the first mounting surface 1262 and the bottom side 23 to the second mounting surface 1263 by glue. The mounting and positioning of the optical wedge 2 on the optical base 1 can be performed by an operator using an operating tool (e.g. tweezers) in the operating space 1265.
Referring to fig. 2, 3, 4 and 5, the optical path 9 of the optical module 10 is roughly: the emitted light 91 emitted from the light emitting device 7 is incident upward from the bottom surface 11 of the optical base 1 into the incident lens 13 to be converged into an incident light 92; the converged incident light 92 is projected upward to the total reflection surface 14; the totally reflected incident light 93 travels forward in a slightly downward sloping direction to the interface 151 of the first air gap 15; when the transmitted light 94 traveling in the first air slit 15 is projected to the spectroscopic surface 21, a part of the transmitted light 94 is reflected by the spectroscopic surface 21 and obliquely emitted downward out of the optical base 1 to provide a monitored light (i.e., reflected light 96) to the monitoring element 8, so that the light emitting power of the light emitting element 7 can be feedback-controlled according to the received light intensity of the monitoring element 8; the transmitted light 94 is at an angle of approximately 30 to 45 degrees with respect to the splitting surface 21, and another portion of the transmitted light 94 will be refracted at the splitting surface 21 and enter the wedge 2 as refracted light 95 to continue forward; the refracted light 95 forms an angle of 60 to 80 degrees with the exit surface 22, the refracted light 95 is refracted again to pass through the exit surface 22 to form an exit light 97, the exit light 97 is deflected upward at an angle with respect to the transmitted light 94 due to the inclined intersection of the light splitting surface 21 and the exit surface 22, and the exit light 97 is emitted forward substantially parallel to the optical axis 90. The outgoing light 97 first travels forward in the second air gap 16; then enters the optical base 1 again through the interface 161 of the second air slit 16, and advances with the emergent light 98 before convergence; finally, the converged outgoing light 99 formed via the outgoing lens 17 is aligned into the optical fiber. Incident light 93 passes through the optical axis 90 with a slight downward inclination, and outgoing light 98 before being condensed travels parallel to the optical axis 90. The condensed outgoing light 99 is substantially flush with the optical axis 90.
The design of the optical module 10 can change the intensity of light reflected to the monitoring element 8, i.e. the splitting ratio, flexibly by only replacing the optical wedge 2 with different splitting films on the basis of keeping the optical base 1 unchanged. The monitoring element 8 is used to obtain the intensity of the monitored light, and the output power of the light emitting element 7 can be feedback controlled to ensure that the output light 99 is output more stably. In addition, the transmitted light 94 that is slightly inclined downwards and enters the optical wedge 2 can be adjusted to the outgoing light 98 that is horizontally emitted outwards from the optical wedge 2 by utilizing the refraction effect of the optical wedge 2 and the included angle 29 between the light splitting surface 21 and the outgoing surface 22, which is favorable for adjusting the corresponding reflection position of the incident light 92 on the total reflection surface 14 of the optical base 1 upwards, avoiding the situation that the first concave part 124 penetrates the bottom of the optical base 1 downwards, and thus being favorable for reducing the overall height of the optical base 1.
Compared with the prior art, the double air slits 15 and 16 are arranged and the design of the optical wedge 2 is matched, so that the light splitting ratio of the optical device 100 can be conveniently changed by replacing the optical wedge 2 with different light splitting films, and the flexible adjustment of the light splitting ratio is facilitated; in addition, the light is deflected by the optical wedge 2, so that the reflection position of the incident light 92 on the total reflection surface 14 can be adjusted upwards, and the miniaturization design of the optical base 1 is facilitated.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the embodiments of the present invention, and those skilled in the art can easily make various changes and modifications according to the main concept and spirit of the present invention, so the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. An optical module is arranged between a light emitting element and an optical transmission element and is used for coupling the emitted light of the light emitting element to the end face of the optical transmission element; the optical module includes: an optical base provided with a total reflection surface for deflecting the light incident to the optical base by a predetermined angle and a converging surface for directing the outgoing light to the light transmission element; the optical wedge is characterized in that the optical base is additionally provided with an optical wedge, the optical wedge is provided with a light splitting surface and an emergent surface opposite to the light splitting surface, a first air gap is formed between the light splitting surface and the optical base, and a second air gap is formed between the emergent surface and the optical base; the incident light reflected by the total reflection surface firstly travels in the optical base in a downward inclined direction, passes out of the optical base and then is projected to the light splitting surface through the first air slit, wherein part of light is reflected on the light splitting surface to provide monitoring light; and the other part of light is deflected upwards by the optical wedge, passes through the second air gap, enters the optical base again, is horizontally emitted outwards and is aligned to the light transmission element through the converging surface.
2. The optical module of claim 1 wherein the beam splitting surface is coated with a beam splitting film, the beam splitting surface obliquely intersecting the exit surface at an angle.
3. The optical module of claim 2 wherein the optical wedge is a freestanding hexahedron having a bottom side, a top side, and two sides connected between the splitting surface and the exit surface, respectively; the bottom side surface and the top side surface are both rectangular, and the bottom side surface is smaller than the top side surface; both the two side surfaces are trapezoidal.
4. The optical module of claim 2 wherein the angle between the dispersing surface and the exit surface is in the range of 6 to 10 degrees.
5. The optical module of claim 2 wherein the optical wedge is mounted on the optical base with a downward slope; light exiting outwardly from the exit surface of the optical wedge is angled upwardly with respect to light incident on the light splitting surface.
6. The optical module according to any one of claims 1 to 5, wherein the optical base has a first mounting surface engaging with the beam splitting surface of the optical wedge, the first mounting surface extending obliquely downward at an inclination angle.
7. The optical module as claimed in claim 6, wherein the first mounting surface has a width suitable for mating with the optical wedge, and the optical base further has an operating space recessed outwardly on both sides of the first mounting surface.
8. The optical module as claimed in claim 6, wherein the top surface of the optical base is recessed with a recess and a cavity communicating with the recess, the first mounting surface forms a bottom surface of the recess, and the cavity is concavely opened at a middle portion of the first mounting surface.
9. The optical module of claim 8 wherein said first air gap is formed by said cavity and said second air gap is formed by said recess.
10. The optical module of claim 9 further comprising a cover plate overlying the recess for closing the second air gap.
11. An optical module according to any one of claims 1 to 5, characterised in that the light-transmitting element is an optical fibre; the optical base is formed by integral injection molding, the front end of the optical base is provided with an optical fiber sleeve and a clamping and fixing flange which is arranged outwards and convexly from the periphery of the optical fiber sleeve, and the optical fiber sleeve is provided with a butt-joint cavity corresponding to the convergent surface and used for correspondingly accommodating the optical fiber.
12. An optical apparatus comprising an optical module according to any one of claims 1 to 11, a circuit board for mounting the optical module, and a light emitting device and a monitoring device mounted on the circuit board for use with the optical module, wherein the monitoring device is adapted to receive the monitoring light emitted from the optical module, and the emission power of the light emitting device is adjustable according to the intensity of the monitoring light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610301753.5A CN107346052B (en) | 2016-05-06 | 2016-05-06 | Optical module and optical apparatus having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610301753.5A CN107346052B (en) | 2016-05-06 | 2016-05-06 | Optical module and optical apparatus having the same |
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| Publication Number | Publication Date |
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| CN107346052A CN107346052A (en) | 2017-11-14 |
| CN107346052B true CN107346052B (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610301753.5A Active CN107346052B (en) | 2016-05-06 | 2016-05-06 | Optical module and optical apparatus having the same |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019173999A1 (en) * | 2018-03-15 | 2019-09-19 | 华为技术有限公司 | Optical transceiver component, optical module, and communication device |
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| CN1761900A (en) * | 2003-03-14 | 2006-04-19 | 安捷伦科技有限公司 | Small form factor all-polymer optical device with integrated dual beam path based on total internal reflection optical turn |
| CN202771056U (en) * | 2012-06-05 | 2013-03-06 | 光红建圣股份有限公司 | Wedge-shaped filter plate for secondary light receiving and sending module |
| CN103336340A (en) * | 2013-07-17 | 2013-10-02 | 苏州旭创科技有限公司 | Optical assembly for realizing beam-splitting energy control |
| CN203786342U (en) * | 2014-04-11 | 2014-08-20 | 苏州旭创科技有限公司 | Optical assembly |
| CN204536604U (en) * | 2015-03-24 | 2015-08-05 | 深圳市易飞扬通信技术有限公司 | Optical coupling device and optical module |
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2016
- 2016-05-06 CN CN201610301753.5A patent/CN107346052B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1761900A (en) * | 2003-03-14 | 2006-04-19 | 安捷伦科技有限公司 | Small form factor all-polymer optical device with integrated dual beam path based on total internal reflection optical turn |
| CN202771056U (en) * | 2012-06-05 | 2013-03-06 | 光红建圣股份有限公司 | Wedge-shaped filter plate for secondary light receiving and sending module |
| CN103336340A (en) * | 2013-07-17 | 2013-10-02 | 苏州旭创科技有限公司 | Optical assembly for realizing beam-splitting energy control |
| CN203786342U (en) * | 2014-04-11 | 2014-08-20 | 苏州旭创科技有限公司 | Optical assembly |
| CN204536604U (en) * | 2015-03-24 | 2015-08-05 | 深圳市易飞扬通信技术有限公司 | Optical coupling device and optical module |
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