US20150153525A1 - Optical fiber connector - Google Patents
Optical fiber connector Download PDFInfo
- Publication number
- US20150153525A1 US20150153525A1 US14/144,576 US201314144576A US2015153525A1 US 20150153525 A1 US20150153525 A1 US 20150153525A1 US 201314144576 A US201314144576 A US 201314144576A US 2015153525 A1 US2015153525 A1 US 2015153525A1
- Authority
- US
- United States
- Prior art keywords
- location
- optical
- optical fiber
- fiber connector
- coupling element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
-
- 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
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3853—Lens inside the ferrule
-
- 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
- G02B6/4228—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements
- G02B6/423—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements using guiding surfaces for the alignment
- G02B6/4231—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements using guiding surfaces for the alignment with intermediate elements, e.g. rods and balls, between the elements
-
- 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
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
- G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
-
- 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
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/389—Dismountable connectors, i.e. comprising plugs characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
-
- 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
-
- 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
- G02B6/4212—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element being a coupling medium interposed therebetween, e.g. epoxy resin, refractive index matching material, index grease, matching liquid or gel
Definitions
- the present disclosure relates to connectors, and particularly to an optical fiber connector.
- An optical connector includes a laser diode for emitting optical signals, a first optical transmission assembly, a second optical transmission assembly coupled with the first optical transmission assembly, and a photo diode.
- the optical signals emitted from the laser diode enter the first optical transmission assembly, and are transmitted through the second optical transmission assembly to the photo diode, and finally can be converted into electrical signals by the photo diode.
- the first optical transmission assembly includes a number of first coupling lenses
- the second optical assembly includes a number of second coupling lenses for coupling the first coupling lenses to allow optimum signal transmittance.
- the first optical transmission assembly has to be mechanically and precisely engaged and configured with the second optical transmission assembly via a plurality of positioning holes and positioning posts to ensure the lenses are precisely aligned with the optical fibers.
- FIG. 1 is an assembled, isometric view of an optical fiber connector, according to an exemplary embodiment.
- FIG. 2 is an exploded, isometric view of the optical fiber connector of FIG. 1 .
- FIG. 3 is a cross-sectional view taken along line III-IIII of the optical fiber connector of FIG. 1 .
- FIGS. 1-3 show an embodiment of an optical fiber connector 10 .
- the optical connector 10 includes a first optical-electric coupling element 100 , a second optical-electric coupling element 200 , and two elastic location caps 300 .
- the first optical-electric coupling element 100 is made of a transparent material, such as a transparent rubber, and includes a first main body 110 and two first extension portions 120 .
- the first main body 110 includes a first side surface 115 , a second side surface 116 facing away from the first side surface 115 , and a first upper surface 117 .
- the first side surface 115 is substantially parallel to the second side surface 116 .
- the first upper surface 117 substantially perpendicularly connects the first side surface 115 to the second side surface 116 .
- the first optical-electric coupling element 100 also includes two first coupling lenses 130 formed on the first side surface 115 .
- all of the first coupling lenses 130 are convex lenses and are integrally formed with the first optical-electric coupling element 100 .
- the first upper surface 117 defines a first cavity 111 .
- the first cavity 111 runs through the second side surface 116 .
- the first cavity 111 includes a first bottom surface 118 .
- the first bottom surface 118 defines two first semi-cylindrical receiving holes 112 .
- Each first receiving hole 112 aligns with a first coupling lens 130 .
- An axis of the first coupling lens 130 is substantially parallel to a lengthwise direction of the first receiving hole 112 .
- Each first receiving hole 112 is configured to receive an optical fiber (not shown).
- the two first extension portions 120 substantially perpendicularly extend upward from the first side surface 115 .
- Each first extension portion 120 is located on one end portion of the first side surface 115 .
- the two first coupling lenses 130 are located between the two first extension portions 120 .
- Each first extension portion 120 includes a first location surface 121 substantially parallel to the first side surface 115 .
- Each first extension portion 120 includes a location post 122 substantially perpendicularly extending upward from the first location surface 121 .
- Each location post 122 includes a conic portion 1221 and a cylindrical portion 1222 connected to the conic portion 1221 .
- a diameter of the conic portion 1221 gradually reduces from an end of the conic portion 1221 connected to the first location surface 121 to the other end of the conic portion 1221 connected to the cylindrical portion 1222 .
- a diameter of the cylindrical portion 1222 is substantially equal to a diameter of an end of the conic portion 1221 connected to the cylindrical portion 1222 .
- the second optical-electric coupling element 200 is also made of a transparent material, such as a transparent rubber, and includes a second main body 210 and two second extension portions 220 .
- the second main body 210 includes a third side surface 215 , a fourth side surface 216 facing away from the third side surface 215 , and a second upper surface 217 .
- the third side surface 215 is substantially parallel to the fourth side surface 216 .
- the second upper surface 217 substantially perpendicularly connects the third side surface 215 to the fourth side surface 216 .
- the second optical-electric coupling element 200 also includes two second coupling lenses 230 formed on the third side surface 215 .
- all of the second coupling lenses 230 are convex lenses and are integrally formed with the second optical-electric coupling element 200 .
- the second upper surface 217 defines a second cavity 211 .
- the second cavity 211 runs through the fourth side surface 216 .
- the second cavity 211 includes a second bottom surface 218 .
- the second bottom surface 218 defines two second semi-cylindrical receiving holes 212 .
- Each second receiving hole 212 aligns with a second coupling lens 230 .
- An axis of the second coupling lens 230 is substantially parallel to a lengthwise direction of the second receiving hole 212 .
- Each second receiving hole 212 is configured to receive an optical fiber (not shown).
- the two second extension portions 220 substantially perpendicularly extend upward from the third side surface 215 .
- Each second extension portion 220 is located on one end portion of the third side surface 215 .
- the two second coupling lenses 230 are located between the two second extension portions 220 .
- Each second extension portion 220 includes a second location surface 221 and a third location surface 222 facing away from the second location surface 221 .
- the second location surface 221 is substantially parallel to the second side surface 215 and the first second location surface 121 .
- the third location surface 222 is substantially parallel to the second location surface 221 .
- Each second extension portion 220 defines a location hole 223 running through the second location surface 221 and the third location surface 222 .
- Each location hole 223 spatially corresponds to a corresponding location post 122 .
- a shape and a size of the location hole 223 respectively corresponds to a shape and a size of the conic portion 1221 .
- the locating hole 223 is also conic.
- a diameter of the location hole 223 gradually reduces from the second location surface 221 to the third location surface 222 , and a length of the location hole 223 is substantially equal to a length of the conic portion 1221 along a direction perpendicular to the first location surface 121 , as such, the locating hole 223 matches with the conic portion 1221 .
- the elastic location cap 300 is made of rubber, and defines a receiving hole 310 .
- the receiving hole 310 is a blind hole.
- a shape and a size of the receiving hole 310 respectively corresponds to a shape and a size of the cylindrical portion 1222 of the location post 122 .
- a length of the receiving hole 310 is substantially equal to a length of the cylindrical portion 1222 along a direction perpendicular to the first location surface 121 , as such, the receiving hole 310 matches with the cylindrical portion 1222 .
- the locating posts 122 are inserted into the location holes 223 to attach the first optical-electric coupling element 100 to the second optical-electric coupling element 200 .
- Each conic portion 1221 is tightly received in a location hole 223 , with the first location surface 121 tightly contacting with the second location surface 221 , and with each first coupling lens 130 being aligned with a second coupling lens 230 .
- the cylindrical portion 1222 is totally exposed out of the location hole 223 , the cylindrical portion 1222 is received in the receiving hole 310 . This can prevent the location posts 122 from being slid out of the location hole 223 , as such, improving coupling precision between the first optical-electric coupling element 100 and the second optical-electric coupling element 200 .
- the numbers of the first coupling lenses 130 and the second coupling lenses 230 can be changed depending on need.
- the numbers of the first receiving hole 112 and the second receiving hole 212 will change correspondingly.
- the numbers of location posts 122 and the receiving holes 230 will change correspondingly.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
- 1. Technical Field
- The present disclosure relates to connectors, and particularly to an optical fiber connector.
- 2. Description of Related Art
- An optical connector includes a laser diode for emitting optical signals, a first optical transmission assembly, a second optical transmission assembly coupled with the first optical transmission assembly, and a photo diode. The optical signals emitted from the laser diode enter the first optical transmission assembly, and are transmitted through the second optical transmission assembly to the photo diode, and finally can be converted into electrical signals by the photo diode.
- The first optical transmission assembly includes a number of first coupling lenses, and the second optical assembly includes a number of second coupling lenses for coupling the first coupling lenses to allow optimum signal transmittance. The first optical transmission assembly has to be mechanically and precisely engaged and configured with the second optical transmission assembly via a plurality of positioning holes and positioning posts to ensure the lenses are precisely aligned with the optical fibers. However, it is difficult to consistently align the positioning holes and the positioning posts together, which may result in lowered coupling precision between the coupling lenses and the optical fibers, and thus poor optical signals transmittance.
- Therefore, it is desirable to provide an optical fiber connector which can overcome the above-mentioned limitations.
- Many aspects of the present disclosure can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure.
-
FIG. 1 is an assembled, isometric view of an optical fiber connector, according to an exemplary embodiment. -
FIG. 2 is an exploded, isometric view of the optical fiber connector ofFIG. 1 . -
FIG. 3 is a cross-sectional view taken along line III-IIII of the optical fiber connector ofFIG. 1 . -
FIGS. 1-3 show an embodiment of anoptical fiber connector 10. Theoptical connector 10 includes a first optical-electric coupling element 100, a second optical-electric coupling element 200, and twoelastic location caps 300. - The first optical-
electric coupling element 100 is made of a transparent material, such as a transparent rubber, and includes a firstmain body 110 and twofirst extension portions 120. - The first
main body 110 includes afirst side surface 115, asecond side surface 116 facing away from thefirst side surface 115, and a firstupper surface 117. Thefirst side surface 115 is substantially parallel to thesecond side surface 116. The firstupper surface 117 substantially perpendicularly connects thefirst side surface 115 to thesecond side surface 116. - The first optical-
electric coupling element 100 also includes twofirst coupling lenses 130 formed on thefirst side surface 115. In one embodiment, all of thefirst coupling lenses 130 are convex lenses and are integrally formed with the first optical-electric coupling element 100. - The first
upper surface 117 defines afirst cavity 111. Thefirst cavity 111 runs through thesecond side surface 116. Thefirst cavity 111 includes afirst bottom surface 118. Thefirst bottom surface 118 defines two firstsemi-cylindrical receiving holes 112. Each first receivinghole 112 aligns with afirst coupling lens 130. An axis of thefirst coupling lens 130 is substantially parallel to a lengthwise direction of thefirst receiving hole 112. Eachfirst receiving hole 112 is configured to receive an optical fiber (not shown). - The two
first extension portions 120 substantially perpendicularly extend upward from thefirst side surface 115. Eachfirst extension portion 120 is located on one end portion of thefirst side surface 115. The twofirst coupling lenses 130 are located between the twofirst extension portions 120. - Each
first extension portion 120 includes afirst location surface 121 substantially parallel to thefirst side surface 115. Eachfirst extension portion 120 includes alocation post 122 substantially perpendicularly extending upward from thefirst location surface 121. Eachlocation post 122 includes aconic portion 1221 and acylindrical portion 1222 connected to theconic portion 1221. A diameter of theconic portion 1221 gradually reduces from an end of theconic portion 1221 connected to thefirst location surface 121 to the other end of theconic portion 1221 connected to thecylindrical portion 1222. A diameter of thecylindrical portion 1222 is substantially equal to a diameter of an end of theconic portion 1221 connected to thecylindrical portion 1222. - The second optical-
electric coupling element 200 is also made of a transparent material, such as a transparent rubber, and includes a secondmain body 210 and twosecond extension portions 220. - The second
main body 210 includes athird side surface 215, afourth side surface 216 facing away from thethird side surface 215, and a secondupper surface 217. Thethird side surface 215 is substantially parallel to thefourth side surface 216. The secondupper surface 217 substantially perpendicularly connects thethird side surface 215 to thefourth side surface 216. - The second optical-
electric coupling element 200 also includes twosecond coupling lenses 230 formed on thethird side surface 215. In one embodiment, all of thesecond coupling lenses 230 are convex lenses and are integrally formed with the second optical-electric coupling element 200. - The second
upper surface 217 defines asecond cavity 211. Thesecond cavity 211 runs through thefourth side surface 216. Thesecond cavity 211 includes asecond bottom surface 218. Thesecond bottom surface 218 defines two secondsemi-cylindrical receiving holes 212. Each second receivinghole 212 aligns with asecond coupling lens 230. An axis of thesecond coupling lens 230 is substantially parallel to a lengthwise direction of thesecond receiving hole 212. Each second receivinghole 212 is configured to receive an optical fiber (not shown). - The two
second extension portions 220 substantially perpendicularly extend upward from thethird side surface 215. Eachsecond extension portion 220 is located on one end portion of thethird side surface 215. The twosecond coupling lenses 230 are located between the twosecond extension portions 220. - Each
second extension portion 220 includes asecond location surface 221 and athird location surface 222 facing away from thesecond location surface 221. Thesecond location surface 221 is substantially parallel to thesecond side surface 215 and the firstsecond location surface 121. Thethird location surface 222 is substantially parallel to thesecond location surface 221. - Each
second extension portion 220 defines alocation hole 223 running through thesecond location surface 221 and thethird location surface 222. Eachlocation hole 223 spatially corresponds to acorresponding location post 122. A shape and a size of thelocation hole 223 respectively corresponds to a shape and a size of theconic portion 1221. In one embodiment, the locatinghole 223 is also conic. A diameter of thelocation hole 223 gradually reduces from thesecond location surface 221 to thethird location surface 222, and a length of thelocation hole 223 is substantially equal to a length of theconic portion 1221 along a direction perpendicular to thefirst location surface 121, as such, the locatinghole 223 matches with theconic portion 1221. - The
elastic location cap 300 is made of rubber, and defines a receivinghole 310. The receivinghole 310 is a blind hole. A shape and a size of the receivinghole 310 respectively corresponds to a shape and a size of thecylindrical portion 1222 of thelocation post 122. A length of the receivinghole 310 is substantially equal to a length of thecylindrical portion 1222 along a direction perpendicular to thefirst location surface 121, as such, the receivinghole 310 matches with thecylindrical portion 1222. - When assembling, the locating
posts 122 are inserted into the location holes 223 to attach the first optical-electric coupling element 100 to the second optical-electric coupling element 200. Eachconic portion 1221 is tightly received in alocation hole 223, with thefirst location surface 121 tightly contacting with thesecond location surface 221, and with eachfirst coupling lens 130 being aligned with asecond coupling lens 230. Thecylindrical portion 1222 is totally exposed out of thelocation hole 223, thecylindrical portion 1222 is received in the receivinghole 310. This can prevent the location posts 122 from being slid out of thelocation hole 223, as such, improving coupling precision between the first optical-electric coupling element 100 and the second optical-electric coupling element 200. - In other embodiments, the numbers of the
first coupling lenses 130 and thesecond coupling lenses 230 can be changed depending on need. The numbers of thefirst receiving hole 112 and thesecond receiving hole 212 will change correspondingly. - In other embodiments, the numbers of
location posts 122 and the receivingholes 230 will change correspondingly. - It will be understood that the above particular embodiments are shown and described by way of illustration only. The principles and the features of the present disclosure may be employed in various and numerous embodiment thereof without departing from the scope of the disclosure as claimed. The above-described embodiments illustrate the possible scope of the disclosure but do not restrict the scope of the disclosure.
Claims (13)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2013106217262 | 2013-11-30 | ||
CN201310621726.2A CN104678511A (en) | 2013-11-30 | 2013-11-30 | Optical fiber connector |
CN201310621726 | 2013-11-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
US9039292B1 US9039292B1 (en) | 2015-05-26 |
US20150153525A1 true US20150153525A1 (en) | 2015-06-04 |
Family
ID=53176301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/144,576 Expired - Fee Related US9039292B1 (en) | 2013-11-30 | 2013-12-31 | Optical fiber connector |
Country Status (3)
Country | Link |
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US (1) | US9039292B1 (en) |
CN (1) | CN104678511A (en) |
TW (1) | TW201520627A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109832060B (en) * | 2019-04-03 | 2024-05-31 | 梅州市梅县区农业科学研究所 | Device for resisting bad weather under fruit tree forest |
Citations (6)
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US20040228584A1 (en) * | 2000-12-04 | 2004-11-18 | Michael Dudek | Optical interface unit |
US20070281538A1 (en) * | 2006-06-05 | 2007-12-06 | Homac Mfg. Company | Electrical connector including cable end seals and related methods |
US20110222818A1 (en) * | 2010-03-12 | 2011-09-15 | Nitto Denko Corporation | Optical waveguide for optical connector, optical connector using same, and method of manufacturing optical waveguide for optical connector |
US20110243507A1 (en) * | 2010-04-05 | 2011-10-06 | Electronics And Telecommunications Research Institute | Optical connector and optical apparatus having the same |
US20120100739A1 (en) * | 2010-10-21 | 2012-04-26 | Jack Ton | Web membrane connector seal |
US20130336619A1 (en) * | 2012-06-15 | 2013-12-19 | Unive Co., Ltd. | Optical subassembly for passive alignment and method of aligning the same |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6724015B2 (en) * | 2001-04-09 | 2004-04-20 | Corona Optical Systems, Inc. | Optical attenuating underchip encapsulant |
US7165895B2 (en) * | 2002-09-16 | 2007-01-23 | Emcore Corporation | Method of guiding an optical signal |
CN202667257U (en) * | 2012-07-05 | 2013-01-16 | 鞍钢股份有限公司 | Positioning guiding device for vertical roll bearing box |
CN202815278U (en) * | 2012-09-04 | 2013-03-20 | 开曼群岛商众达电子股份有限公司 | Optical conduction unit and optical transmit-receive device |
-
2013
- 2013-11-30 CN CN201310621726.2A patent/CN104678511A/en active Pending
- 2013-12-13 TW TW102146289A patent/TW201520627A/en unknown
- 2013-12-31 US US14/144,576 patent/US9039292B1/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040228584A1 (en) * | 2000-12-04 | 2004-11-18 | Michael Dudek | Optical interface unit |
US20070281538A1 (en) * | 2006-06-05 | 2007-12-06 | Homac Mfg. Company | Electrical connector including cable end seals and related methods |
US20110222818A1 (en) * | 2010-03-12 | 2011-09-15 | Nitto Denko Corporation | Optical waveguide for optical connector, optical connector using same, and method of manufacturing optical waveguide for optical connector |
US20110243507A1 (en) * | 2010-04-05 | 2011-10-06 | Electronics And Telecommunications Research Institute | Optical connector and optical apparatus having the same |
US20120100739A1 (en) * | 2010-10-21 | 2012-04-26 | Jack Ton | Web membrane connector seal |
US20130336619A1 (en) * | 2012-06-15 | 2013-12-19 | Unive Co., Ltd. | Optical subassembly for passive alignment and method of aligning the same |
Also Published As
Publication number | Publication date |
---|---|
TW201520627A (en) | 2015-06-01 |
US9039292B1 (en) | 2015-05-26 |
CN104678511A (en) | 2015-06-03 |
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