CN103326784A - Optical communication system - Google Patents
Optical communication system Download PDFInfo
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- CN103326784A CN103326784A CN2012100791545A CN201210079154A CN103326784A CN 103326784 A CN103326784 A CN 103326784A CN 2012100791545 A CN2012100791545 A CN 2012100791545A CN 201210079154 A CN201210079154 A CN 201210079154A CN 103326784 A CN103326784 A CN 103326784A
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Abstract
An optical communication system comprises a bearing body, an optical signal processing module, an optical signal transmission module and an optical path conversion unit. The optical path conversion unit is arranged between the optical signal processing module and the optical signal transmission module and comprises a main body part and an optical path translation part buried in the main body part. The main body part and the optical path translation part are different in refraction index. The optical path translation part is provided with a first surface and a second surface which are opposite and parallel, input optical signals and output optical signals all penetrate through the first surface and the second surface, the transmission directions of the input optical signals and the output optical signals close to the first surface are parallel, and the first surface and the second surface both incline relative to the transmission directions of the input optical signals and the output optical signals.
Description
Technical field
The present invention relates to a kind of light communication system.
Background technology
In the optical communication transmission technology, signal is with the formal output of light and transmits, and then light signal is converted into the signal of telecommunication to use in application end again.
At present generally all be provided with light signal transmitter unit and light signal receiving element in the employed light communication system with light signal input and output dual-use function; this light signal transmitter unit and light signal receiving element can be arranged on the supporting body usually, and to carry out emission and the reception of light signal perpendicular to the direction of this supporting body.
Yet, in order to save the space of optical communication transmission system, the optical fiber of general transmitting optical signal all can run line along the direction that is parallel to this supporting body, if optical fiber will carry out butt coupling in the mode of directly aiming at light signal transmitter unit and light signal receiving element like this, certainly will optical fiber will be bent, and this mode can reduce optical signal transmission efficient greatly.
Summary of the invention
In view of this, provide a kind of light communication system simple in structure and that efficiency of transmission is high real in necessary.
A kind of light communication system comprises a supporting body, a light signal processing module, an optical signal transmission module, reaches a light path converting unit.This light signal processing module comprises a light signal receiving element and a light signal transmitter unit, and this light signal receiving element and this light signal transmitter unit are arranged on this supporting body.This optical signal transmission module comprises an optical fiber and an optical fiber splice, and an end of this optical fiber is fixed on this optical fiber splice.This light path converting unit is arranged between this light signal processing module and this optical signal transmission module, and this light path converting unit comprises that a main part and is embedded in the light path translation section in this main part.This main part is different from the refractive index of this light path translation section.This main part comprises the 3rd optical surface between the first optical surface, the second optical surface and this first optical surface and this second optical surface, and wherein, this first optical surface is relative with this optical signal transmission module, and the 3rd optical surface is relative with this light signal processing module.Input optical signal by this optical signal transmission module input enters this main part by this first optical surface, then through after this light path translation section refraction the light path translation occuring, further after total reflection occured at this second optical surface place, the 3rd optical surface was incident upon this light signal receiving element certainly; Enter this main part by the 3rd optical surface and after the second optical surface of this main part reflects by the output optical signal of this light signal transmitter unit emission, then through after after this light path translation section refraction the light path translation occuring, this first optical surface penetrates to this optical signal transmission module certainly.This light path translation section has relative and parallel first surface and second surface, contiguous this second optical surface of this first surface, contiguous this first optical surface of this second surface, this input optical signal and output optical signal all pass this first surface and second surface, and this input optical signal of contiguous this first surface and the transmission direction of output optical signal are parallel, and this first surface and second surface all favour the transmission direction of this input optical signal and output optical signal.
Compared with prior art, described light communication system adopts the light path converting unit to curve element as the light path between light signal processing module and the optical signal transmission module, thereby make this light communication system need not bend optical fiber and just can realize that optical fiber runs the purpose of line along the direction on the surface that is parallel to this supporting body, saved the space of photoelectricity transmission framework.In addition, light path translation section is set in the main part of this light path converting unit, can produce to different wavelengths of light the effect of the translation of different sizes by light path translation section, can make from the input light of outside and from the wavelength that this light signal transmitter unit sends and be different from input optical signal and output optical signal only by an Optical Fiber Transmission, save cost, can make designs simplification simultaneously.
Description of drawings
Fig. 1 is the structural representation of the light communication system that provides of the embodiment of the invention.
Fig. 2 is the STRUCTURE DECOMPOSITION schematic diagram of the light communication system that provides of the embodiment of the invention.
Fig. 3 is the index path in the light path converting unit of light communication system shown in Figure 1.
Fig. 4 is the vertical view of light path converting shown in Figure 3 unit.
The main element symbol description
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100 |
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10 |
| The optical |
20 |
| The light |
30 |
| The light |
40 |
| The |
102 |
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21 |
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22 |
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11 |
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211 |
| The |
212 |
| Accepting |
214 |
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215 |
| |
216 |
| The light |
31 |
| The light |
32 |
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41 |
| The |
42 |
| The 3rd lens unit | 43a |
| The |
43b |
| Light |
44 |
| The first |
401 |
| The second |
402 |
| The 3rd |
403 |
| The |
441 |
| The |
442 |
| The |
443 |
| The |
444 |
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320 |
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220 |
Following embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Below in conjunction with accompanying drawing embodiment provided by the present invention is described in further detail.
See also Fig. 1 to Fig. 2, embodiment of the present invention provides a kind of light communication system 100, and it comprises supporting body 10, optical signal transmission module 20, light signal processing module 30 and light path converting unit 40.Wherein, this supporting body 10 is that rectangle is tabular, and it has a surface 102, and this optical signal transmission module 20, light signal processing module 30 and light path converting unit 40 all are arranged on the surface 102 of this supporting body 10.
This optical signal transmission module 20 comprises an optical fiber splice 21 and an optical fiber 22, wherein, this optical fiber splice 21 is used for accommodating fixing this optical fiber 22, and this optical fiber 22 is used for transmitting optical signal, in the present invention, the optical signal transmission direction of this optical signal transmission module 20 is parallel with the surface 102 of this supporting body 10.
This optical fiber splice 21 comprises a joint body 211, a first lens unit 212 and two reference column (not shown), this joint body 211 roughly is cuboid, offer accepting hole 214 at this joint body 211, an end of this optical fiber 22 is accommodated and is fixed in this accepting hole 214.This first lens unit 212 is arranged at the relative first surface 215 in the end with this optical fiber 22 of this joint body 211, and the end of this first lens unit 212 and this optical fiber 22 over against.This reference column protrudes and is formed at this joint body 211 adjacent to the second surface 216 of this first surface 215, offer for the location hole 11 that cooperates this reference column 213 at this supporting body 10, this optical fiber splice 21 is fixed on this supporting body 10 with location hole 11 structures by this reference column that cooperatively interacts 213.
This light signal processing module 30 comprises a light signal receiving element 31 and a light signal transmitter unit 32, wherein, this light signal receiving element 31 is used for receiving the external optical signal that is transmitted by this optical signal transmission module 20, and this light signal transmitter unit 32 is used for the utilizing emitted light signal and passes through this optical signal transmission module 20 to external transmission.
In the present embodiment, the direction of these light signal processing module 30 receptions and utilizing emitted light signal is approximately perpendicular to the surface 102 of this supporting body 10.
This light path converting unit 40 is arranged between this light signal processing module 30 and this optical signal transmission module 20, and it is used for changing the transmission direction of the light signal between this light signal processing module 30 and this optical signal transmission module 20.
Please further consult Fig. 3, this light path converting unit 40 comprises that a main part 41, one second lens unit 42, one the 3rd lens unit 43a, one the 4th lens unit 43b and are embedded in the light path translation section 44 in the main part 41.The 3rd optical surface 403 that this main part 41 includes the first optical surface 401, the second optical surface 402 and all is connected with this first optical surface 401 and the second optical surface 402, wherein, this first optical surface 401 is relative with this optical signal transmission module 20, and the 3rd optical surface 403 is relative with this light signal processing module 30.External optical signal by these optical signal transmission module 20 inputs enters this light path converting unit 40 by this first optical surface 401, and through the light path translation occurs after the refraction of this light path translation section 44, then after total reflection occurs at these the second optical surface 402 places, penetrate to this light signal processing module 30 from the 3rd optical surface 403 at last; Opposite, optical signals the 3rd optical surface 403 by these light signal processing module 30 emissions enters this light path converting unit 40 and at these the second optical surface 402 places total reflection occurs, then through the light path translation occurs after the refraction of this light path translation section 44, penetrate to this optical signal transmission module 20 from this first optical surface 401 at last.In the present embodiment, this second optical surface 402 is 45 degree with the angle of this first optical surface 401 and the 3rd optical surface 403, and this light signal transmitter unit 32 is all parallel with the first optical surface 401, the second optical surface 402 and the 3rd optical surface 403 with the line of light signal receiving element 31.
Preferably, this first optical surface 401 is perpendicular to the optical signal transmission direction of this optical signal transmission module 20, and the 3rd optical surface 403 is perpendicular to the light signal transmit direction of this light signal processing module 30.
Be appreciated that the light signal of injecting in this light path converting unit 40 is at least through being penetrated by this light path converting unit 40 after the total reflection again.
This second lens unit 42 is arranged at this first optical surface 401 and faces with this first lens unit 212, be used for to launch the convergence of rays from light signal transmitter unit 32, and will be converted into from the light of this first lens unit 212 parallel rays and be incident upon this main part 41.The 3rd lens unit 43a and the 4th lens unit 43b are arranged at the 3rd optical surface 403, and relative with light signal transmitter unit 32 with this light signal receiving element 31 respectively, the 3rd lens unit 43a is used for the convergence of rays that will receive and transfers to transferring to this main part 41 after this light signal receiving element 31, the four lens unit 43b are converted into directional light for the light that light signal transmitter unit 32 is sent.
This light path translation section 44 is arranged in this main part 41, in the present embodiment, this light path translation section 44 is rectangular-shaped, and this light path translation section 44 has relative the 3rd surface 441 and the 4th surface 442 and relative the 443 and the 6th surface 444, the 5th surface, and the 5th surface 443 and the 6th surface 444 connect the 441 and the 4th surface 442, the 3rd surface.The 441 and the 4th surface 442, the 3rd surface is parallel to the 443 and the 6th surfaces 444, the 3rd optical surface 403, the five surface and is parallel to each other and favours this first optical surface 401, and its incline direction as shown in Figs. 3-4.Wherein, the 5th surface 443 is adjacent with this second optical surface 402, and the 6th surface 444 is adjacent with this first optical surface 401.
This light path translation section 44 is light transmissive material, and refractive index is different from the refractive index of this main part 41, and in the present embodiment, the refractive index of this light path translation section 44 is less than the refractive index of this main part 41.This light path translation section 44 can adopt in this main part 41 and offer rectangular-shaped hole, then the liquid plastic material is injected this hole, and then will form after the liquid plastic material cured.Certainly, this light path translation section 44 also can form by alternate manner, as directly the rectangle solid material being inserted the rectangular-shaped hole formation that is formed in the main part 41, is not limited to the present embodiment.
See also Fig. 3 and Fig. 4, be the index path of light path converting unit 40 in this light communication system 100.This light signal transmitter unit 32 sends an output light 320, and this output light 320 is through transferring in this main part 41 with the direction perpendicular to the 3rd optical surface 403 behind the 4th lens unit 43b and being incident to this second optical surface 402, in the present embodiment, this output light 320 is red light; After this output light 320 is reflected by this second optical surface 402, be incident to the 5th surface 443 of this light path translation section 44 with the direction perpendicular to this first optical surface 401, because the 5th surface 443 favours this first optical surface 401, therefore the 5th surface 443 also favours the incident direction of this output light 320, by the refraction principle of light as can be known, this exports light 320 transmission direction after the 6th surperficial 444 outgoing still perpendicular to this first optical surface 401, but in the direction that is parallel to this first optical surface 401 and the 3rd optical surface 403 one first side-play amount D1 is arranged; This output light 320 enters optical fiber 22 through the second lens unit 42 and first lens unit 212 are laggard successively after the 6th surperficial 444 outgoing, and exports the external world to by optical fiber.
This optical fiber 22 transfers to the input light 220 from the outside in this main part 41 with the direction perpendicular to this first optical surface 401 afterwards by this first lens unit 212 and the second lens unit 42, and in the present embodiment, this input light 220 is blue light; The direction that this input light 220 favours the 6th surface 444 of this light path translation section 44 enters this light path translation section 44, and by the 5th surperficial 443 outgoing, refraction principle by light, this input light 220 transmission direction after the 5th surperficial 443 outgoing but has one second side-play amount D2 in the direction that is parallel to this first optical surface 401 and the second optical surface 402 still perpendicular to the first optical surface 401; Input light 220 from the 6th surperficial 444 outgoing enters the 3rd lens unit 43a after 402 reflections of the second optical surface, enter this light signal receiving element 31 after this input light 220 convergence through the 3rd lens unit 43a.
According to optical knowledge as can be known, because red light wavelength is greater than blue light wavelength, the refractive index of light path translation section 44 is less than the refractive index of this main part 41, at light by the 5th surface the 443 or the 6th surperficial 444 o'clock, in the situation of identical incidence angle, the refraction angle of blue light in light path translation section 44 is greater than the refraction angle of red light in light path translation section 44, and light is after 44 outgoing of light path translation section, and the side-play amount of red light is less than the side-play amount of blue light.So, in the present embodiment, the first side-play amount D1 is less than described the second side-play amount D2, then this input light 220 and output light 320 distance when transferring to zone between the 6th surface 444 and this first optical surface 401 less than this input light 220 and output light 320 transferring to the 5th surperficial 443 and this second optical surface 402 between distance when regional.And, when keeping this input light 220 and output light 320 transferring to distance when regional between the 5th surface 443 and this second optical surface 402 when constant, this light path translation section 44 thickness on the light transmission direction i.e. the 5th surface 443 is larger with the distance on the 6th surface 444, then this input light 220 and output light 320 are just less in the distance that transfers to when zone between the 6th surface 444 and this first optical surface 401, in the present embodiment, this input light 220 and output light 320 can be so that input light 220 and export light 320 and pass simultaneously this first lens unit 212 and the second lens unit 42 in the distance that transfers to when zone between the 6th surface 444 and this first optical surface 401.
Be appreciated that, this input light 220 and output light 320 can also be the light of other wavelength, but need input light 220 different from the wavelength of output light 320, so that it can produce different side-play amounts through after this light path translation section 44, thereby make input light 220 and output light 320 can pass simultaneously this first lens unit 212 and the second lens unit 42.Be appreciated that equally, the incline direction of this light path translation section 44 and angle can be according to the actual conditions adjustment, the refractive index of this light path translation section 44 also can be greater than the refractive index of this main part 41, as long as produce different side-play amounts after can realizing making input light 220 with different wave length and output light 320 through light path translation sections 44, and should input light 220 and output light 320 can get final product through this first lens unit 212 and the second lens unit 42 simultaneously.
In the present embodiment, the 443 and the 6th surface 444, the 5th surface favours the straight line vertical and crossing with the transmission direction of exporting light 320 with this input light 220 between this second optical surface 402 and the 5th surface 443, like this then produce different side-play amounts after can making input light 220 with different wave length and output light 320 through light path translation sections 44, and then make this input light 220 and export light 320 and can pass simultaneously this first lens unit 212 and the second lens unit 42.Preferably, the 443 and the 6th surface 444, the 5th surface is perpendicular to this input light 220 between this second optical surface 402 and the 5th surface 443 and the determined plane of transmission direction of output light 320.
In addition, this light signal receiving element 31 also can be perpendicular to this first optical surface 401 with the line of this light signal transmitter unit 32, at this moment, this output light 320 between this second optical surface 402 and the 5th surface 443 and the transmission direction of this input light 220, coplanar with the line of this light signal transmitter unit 32 with this light signal receiving element 31, corresponding, the 443 and the 6th surface 444, the 5th surface of this light path translation section 44 favours the straight line vertical and crossing with the transmission direction of exporting light 320 with this input light 220 between this second optical surface 402 and the 5th surface 443, and the 5th surface 443 is passed in this output light 320 and these input light 220 tiltables, makes output light 320 and input light 220 with different wave length can pass simultaneously this first lens unit 212 and the second lens unit 42.
Need to prove, after this output light 320 transfers to the outside by optical fiber 22, can should export light 320 by beam splitter and in this optical fiber 22, separate.
Compared with prior art, the light communication system 100 of the present embodiment adopts light path converting unit 40 to curve element as the light path between light signal processing module 30 and the optical signal transmission module 20, thereby make this light communication system 100 need not bend optical fiber 22 and just can realize that optical fiber 22 runs the purpose of line along the direction on the surface 102 that is parallel to this supporting body 10, saved the space of photoelectricity transmission framework.In addition, the present embodiment is in the main part 41 interior light path translation sections 44 that arrange of light path converting unit 40, can produce to different wavelengths of light the effect of the translation of different sizes by light path translation section 44, can make from the input light 220 of outside and from the wavelength that this light signal transmitter unit 32 sends and be different from input light 220 and export light 320 only by 22 transmission of an optical fiber, save cost, can make designs simplification simultaneously.
In addition, those skilled in the art also can do other variation in spirit of the present invention, wait design to be used for the present invention, as long as it does not depart from technique effect of the present invention and all can.The variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (10)
1. light communication system, it comprises:
One supporting body;
One light signal processing module, this light signal processing module comprise a light signal receiving element and a light signal transmitter unit, and this light signal receiving element and this light signal transmitter unit are arranged on this supporting body;
One optical signal transmission module comprises an optical fiber and an optical fiber splice, and an end of this optical fiber is fixed on this optical fiber splice; And
One light path converting unit, be arranged between this light signal processing module and this optical signal transmission module, this light path converting unit comprises that a main part and is embedded in the light path translation section in this main part, this main part is different from the refractive index of this light path translation section, this main part comprises the first optical surface, the 3rd optical surface between the second optical surface and this first optical surface and this second optical surface, wherein, this first optical surface is relative with this optical signal transmission module, the 3rd optical surface is relative with this light signal processing module, input optical signal by this optical signal transmission module input enters this main part by this first optical surface, then through after this light path translation section refraction the light path translation occuring, further after total reflection occurs in this second optical surface place, be incident upon this light signal receiving element from the 3rd optical surface, enter this main part by the 3rd optical surface and after the second optical surface of this main part reflects by the output optical signal of this light signal transmitter unit emission, then through after after this light path translation section refraction the light path translation occuring, penetrate to this optical signal transmission module from this first optical surface, this light path translation section has relative and parallel first surface and second surface, contiguous this second optical surface of this first surface, contiguous this first optical surface of this second surface, this input optical signal and output optical signal all pass this first surface and second surface, and this input optical signal of contiguous this first surface and the transmission direction of output optical signal are parallel, and this first surface and second surface all favour the transmission direction of this input optical signal and output optical signal.
2. light communication system as claimed in claim 1 is characterized in that, this supporting body has the 3rd surface perpendicular to first surface, and this light signal processing module, this optical signal transmission module and this light path converting unit all are arranged on the 3rd surface.
3. light communication system as claimed in claim 2 is characterized in that, parallel the 3rd surface of the 3rd optical surface, and this first optical surface is perpendicular to the 3rd surface, and this second optical surface and this first optical surface and the 3rd optical surface are respectively 45 overturning angles.
4. light communication system as claimed in claim 3 is characterized in that, the 3rd optical surface is connected respectively with the second optical surface with this first optical surface.
5. light communication system as claimed in claim 3, it is characterized in that, this optical signal transmission module further comprises the first lens unit, this first lens unit is arranged on this optical fiber splice, this first lens unit and this first optical surface is adjacent and face with the end of this optical fiber, be used for transferring to this optical fiber with transferring to this main part and this output optical signal is converted into directional light after this input optical signal convergence, this light path converting unit further comprises one second lens unit, this second lens unit be arranged at this first optical surface and with this first lens unit over against, this second lens unit is used for and will be converted into directional light from the input optical signal of this first lens unit, and will transfer to this first lens unit after this output optical signal convergence.
6. light communication system as claimed in claim 5, it is characterized in that, this light path converting unit further comprises one the 3rd lens unit and one the 4th lens unit, the 3rd lens unit all is arranged at the 3rd optical surface and relative with the light signal transmitter unit with this light signal receiving element respectively with the 4th lens unit, the 3rd lens unit is used for assembling this input optical signal, and the 4th lens unit is used for that this output optical signal is converted into directional light and injects this main part.
7. light communication system as claimed in claim 3, it is characterized in that, the line of this light signal receiving element and this light signal transmitter unit is parallel to this first optical surface, this light path translation section further comprises the 4th relative and parallel surface and the 5th surface, the 4th surface is with the 5th Surface Vertical and connect this first surface and second surface, the 4th surface and the 5th surface are parallel to the 3rd optical surface, and this first surface and second surface favour this first optical surface.
8. light communication system as claimed in claim 7 is characterized in that, this first surface and second surface are all perpendicular to the 3rd surface.
9. light communication system as claimed in claim 1 is characterized in that, the refractive index of this light path translation section is less than the refractive index of this main part.
10. light communication system as claimed in claim 9 is characterized in that, this light path translation section adopts following steps to make:
In this main part, offer rectangular-shaped hole;
The liquid plastic material is injected this hole; And
Solidify the liquid plastic material that injects, the plastic material after the curing has the light path selection function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210079154.5A CN103326784B (en) | 2012-03-23 | 2012-03-23 | Optical communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210079154.5A CN103326784B (en) | 2012-03-23 | 2012-03-23 | Optical communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103326784A true CN103326784A (en) | 2013-09-25 |
| CN103326784B CN103326784B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210079154.5A Expired - Fee Related CN103326784B (en) | 2012-03-23 | 2012-03-23 | Optical communication system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267851A (en) * | 2019-12-23 | 2021-08-17 | 讯芸电子科技(中山)有限公司 | Optical communication module |
| CN114915340A (en) * | 2021-02-09 | 2022-08-16 | 讯芸电子科技(中山)有限公司 | Optical communication module |
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|---|---|---|---|---|
| US5168537A (en) * | 1991-06-28 | 1992-12-01 | Digital Equipment Corporation | Method and apparatus for coupling light between an optoelectronic device and a waveguide |
| CN101852903A (en) * | 2010-06-07 | 2010-10-06 | 苏州旭创科技有限公司 | Light component for SFP+ single-fiber bidirectional light receiving and transmitting module |
| CN201757796U (en) * | 2010-06-07 | 2011-03-09 | 苏州旭创科技有限公司 | Single-fiber and double-direction symmetrical optical transceiver module optical element for 10G-EPON |
-
2012
- 2012-03-23 CN CN201210079154.5A patent/CN103326784B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5168537A (en) * | 1991-06-28 | 1992-12-01 | Digital Equipment Corporation | Method and apparatus for coupling light between an optoelectronic device and a waveguide |
| CN101852903A (en) * | 2010-06-07 | 2010-10-06 | 苏州旭创科技有限公司 | Light component for SFP+ single-fiber bidirectional light receiving and transmitting module |
| CN201757796U (en) * | 2010-06-07 | 2011-03-09 | 苏州旭创科技有限公司 | Single-fiber and double-direction symmetrical optical transceiver module optical element for 10G-EPON |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267851A (en) * | 2019-12-23 | 2021-08-17 | 讯芸电子科技(中山)有限公司 | Optical communication module |
| US11366271B2 (en) | 2019-12-23 | 2022-06-21 | Shunyun Technology (Zhong Shan) Limited | Optical communication module of reduced size utilizing one birefringent crystal to separate light signals |
| CN114915340A (en) * | 2021-02-09 | 2022-08-16 | 讯芸电子科技(中山)有限公司 | Optical communication module |
| CN114915340B (en) * | 2021-02-09 | 2023-08-04 | 讯芸电子科技(中山)有限公司 | Optical communication module |
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| CN103326784B (en) | 2017-02-08 |
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