CN103163598B - Light R-T unit - Google Patents
Light R-T unit Download PDFInfo
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- CN103163598B CN103163598B CN201110408549.0A CN201110408549A CN103163598B CN 103163598 B CN103163598 B CN 103163598B CN 201110408549 A CN201110408549 A CN 201110408549A CN 103163598 B CN103163598 B CN 103163598B
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- light beam
- light
- module
- lens
- lens section
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Abstract
The present invention provides a kind of light R-T unit, including a light source module, an opto-electronic conversion module, only one optical fiber, a camera lens module and an optical branching device.This light source module is used for sending the first light beam, and this opto-electronic conversion module is for receiving the second light beam, and this optical fiber is used for transmitting this first, second light beam.This camera lens module includes a resettlement section, and this resettlement section has first lens section, the second lens section and the 3rd lens section, these three lens sections respectively with this light source module, this opto-electronic conversion module, this optical fiber optical alignment.This optical branching device is positioned at this resettlement section and guides this first light beam enter this optical fiber and guide the second light beam spread out of from this optical fiber to this opto-electronic conversion module.
Description
Technical field
The present invention relates to optical-fibre communications field, particularly relate to light R-T unit.
Background technology
In prior art, light R-T unit light beam to be sent and reception light beam, different light beams pass through
Different optical fiber transmits, but when light source and photoelectric conversion component are more, light R-T unit to use
A plurality of optical fiber, or also to use multiple photo-coupler, optical branching filter etc., add light R-T unit
Volume.
Summary of the invention
In view of this, it is provided that the light R-T unit that a kind of number of fibers is less, volume is little is the most necessary.
A kind of light R-T unit includes a light source module, an opto-electronic conversion module, only one optical fiber,
One camera lens module and an optical branching device.This light source module is used for sending the first light beam, this photoelectricity
Conversion module is for receiving the second light beam, and this optical fiber is used for transmitting this first, second light beam.This camera lens
Module includes a resettlement section, and this resettlement section has first lens section, the second lens section and
Three lens sections, these three lens sections respectively with this light source module, this opto-electronic conversion module, this optical fiber light
Learn alignment.This resettlement section has the first plane and the second plane.This first, second lens section is respectively positioned on
The diverse location of this first plane.3rd lens section is positioned at this second plane.This first, second light
Restraint and enter this opto-electronic conversion module respectively through corresponding lens section or send from this light source module.Should
First, second plane is mutually perpendicular to.This optical branching device is positioned at this resettlement section and guides this first light beam to enter
Enter this optical fiber and guide the second light beam spread out of in this optical fiber to this opto-electronic conversion module.This light divides
Road device includes a reflection micro-structure.This reflection micro-structure has a micro structure face.The micro-knot of this reflection
Structure is relative to this first plane, this second planar tilt.This micro structure face is for reflecting this first light beam
This second lens section is reflexed to the 3rd lens section and by this second light beam.This second light beam via
3rd lens section is incident upon this micro structure face, and this micro structure face makes this second light beam via these the second lens
Portion reflexes to this opto-electronic conversion module.This first light beam is incident upon this micro structure face via this first lens section,
This micro structure face makes this first light beam reflex to the 3rd lens section.
Relative to prior art, the present invention utilizes optical branching device to make the light beam on different path to be combined in
Article one, in optical fiber, transmission can isolate again the light beam on different path, it is possible to reduces the quantity of optical fiber, reduces
The volume of light transmitting-receiving module.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the light R-T unit that first embodiment of the invention provides.
Fig. 2 is the schematic diagram of the light R-T unit that second embodiment of the invention provides.
Fig. 3 is the schematic diagram of the light R-T unit that third embodiment of the invention provides.
Main element symbol description
Light R-T unit 100,300,500
Light source module 12
Opto-electronic conversion module 14
Optical fiber 16
Camera lens module 18
Resettlement section 180
Optical branching device 20,40
First plane 11,31
Second plane 13,32
First lens section 181
Second lens section 182
3rd lens section 183
First port 21,51
Second port 22,52
3rd port 23,53
Reflecting slant 45
Reflector 450
1 × 2 optical branching device 46
Reflection micro-structure 60
Forming part 600
Micro structure face 601
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Referring to Fig. 1, the light R-T unit 100 that first embodiment of the invention provides includes a light source die
Group 12, an opto-electronic conversion module 14, only one optical fiber 16, a camera lens module 18 and a light
Shunt 20 (being referred to as partial wave multiplexer, WDM, wavelength divisional multiplexer).
This light source module 12 is used for sending the first light beam L1, and this opto-electronic conversion module 14 is for reception second
Light beam L2.This first light beam L1 and this second light beam L2 is in opposite direction, and such as, this first light beam L1 belongs to
In descending route (down flow), this second light beam L2 belongs to up route (up flow).Wavelength is the most mutual
Unequal, such as, this first light beam L1 wavelength is 1300nm, and this second light beam L2 wavelength is 1550nm.
This optical fiber 16 is used for transmitting this first light beam L1 and the second light beam L2.
This light source module 12 includes one or more LASER Light Source, such as laser diode (Laser
Diode, LD), this opto-electronic conversion module 14 include one or more photodiode (photodiode,
PD)。
This camera lens module 18 includes a resettlement section 180, and this resettlement section 180 has first lens section
181, the second lens section 182 and the 3rd lens section 183, these three lens sections respectively with this light source module
12, this opto-electronic conversion module 14, this optical fiber 16 optical alignment.Resettlement section 180 in the present embodiment is in length
Cube structure but it also may be other structure in addition, such as spheroid, triangular prism etc..This is years old
One lens section the 181, second lens section the 182, the 3rd lens section 183 all protrudes from this resettlement section 180, often
The optical surface of individual lens section is for assembling sphere or assembling aspheric surface, each lens section and this resettlement section
180 both can be integrated, it is also possible to manufactures respectively and combines.This camera lens module 18
Material can be glass or plastics, manufacture method can be imprinting moulding can also be ejection formation
Deng.
Optical branching device 20 generally forms on a silicon substrate.In each embodiment of the present invention, optical branching device 20
Being formed in this resettlement section 180, it can be obtained by molding mode processing such as burying formings.Due to this
Optical branching device 20 is formed at the inside of camera lens module 18, it is possible to save space.
This optical branching device 20 enters this optical fiber 16 in order to guide this first light beam L1 and guides from this optical fiber
The the second light beam L2 spread out of in 16 is to this opto-electronic conversion module 14.When LASER Light Source or photodiode
For time multiple, the quantity of the input/output end port of optical branching device 20 or the quantity of optical branching device 20 should be done
Corresponding adjustment.In figure, on optical branching device 20, the dotted line of band arrow represents the optical path of optical branching device
(optical path)。
This optical branching device 20 can be specifically a kind of planar waveguide-type optical branching device (Planar Lightwave
Circuit Splitter), such as, waveguide optical grating, dense wave division multiplexer, 1 × N optical branching device or two-way
The optical element that the light of different directions can be distinguished by wavelength division multiplexer etc..
This optical branching device 20 should be at least according to the quantity of light source module and the quantity of opto-electronic conversion module
Including first port the 21, second port the 22, the 3rd port 23, this first port 21 and this optical fiber 16 light
Learning coupling, this second port 22 is optical coupled with this light source module 12, the 3rd port 23 and this photoelectricity
Conversion module 14 is optical coupled.
Resettlement section 180 in the present embodiment has one first plane 11 and the second plane 13, and this is first flat
Face 11 and this second plane 13 are parallel to each other.3rd lens section 183 is positioned at this first plane 11.For joint
Save space, reduces volume, and this first, second lens section 181,182 is respectively positioned on approximately the same plane, i.e.
Diverse location in this second plane 13 rather than lay respectively at two planes.
3rd lens section 183 is by convergence of rays to this optical fiber 16 or the light that will send in optical fiber 16
Line is directed to optical branching device 20.
This first light beam L1 sends from this light source module 12, through the convergence of the first lens section 181
Enter this resettlement section 180, be then passed through optical branching device the 20, the 3rd lens section 183 and enter this optical fiber 16.
This second light beam L2 enters after the light source module of another light transmitting-receiving module (not shown) sends should
Optical fiber 16, is then passed through the 3rd lens section 183 and enters this optical branching device 20, and this optical branching device 20 should
Second light beam L2 is directed to this second lens section 182, enters this opto-electronic conversion module 14, this light after convergence
Electricity conversion module 14 converts optical signals to the signal of telecommunication.
This optical branching device 20 can also is that Thin Film Filter (Thin Film Filter, TFF).Many when comprising
After the light of wavelength enters this Thin Film Filter by entry port, this optical filter allows the wavelength passed through to lead to
Crossing transmission port output, reflected light signal is exported by reflector port；Again reflected light signal is introduced another
An outer partial wave multiplexer (such as still Thin Film Filter) carries out light splitting, makes an other Reuter penetrate light letter
Number output；So the most just the optical signal of different wave length can be separated.
Referring to Fig. 2, light transmitting-receiving module 300 and light that second embodiment of the invention provides receive and dispatch module 100
Essentially identical, difference is that the light path of the first light beam L1 and the second light beam L2 bends, such as
Substantially bending 90 degree, such that it is able to make light receive and dispatch module 300 volume more compact.
It is provided with the first plane 31 of the 3rd lens section 183 and to be provided with the first lens section 181, second saturating
Second plane 32 in mirror portion 182 is mutually perpendicular to.Optical branching device 40 includes a planar waveguide-type optical branching device
With a reflecting slant 45.This reflecting slant 45 is a surface of a reflector 450.This reflector
450 in triangular prism structure, is just arranged on this first plane 31 and opposite of second plane 32 angle of cut.Should
The structure of reflector 450 is not limited to this, and such as this reflector 450 can be spheroid, in a word, and this reflection
This first light beam L1 and the second light beam L2 can be separated by body 450 further, and light path is folded into predetermined
Angle.
In the present embodiment, this planar waveguide-type optical branching device use 1 × 2 optical branching device 46 (with
The optical branching device that first embodiment is used is identical).This 1 × 2 optical branching device include first port 51,
Second port the 52, the 3rd port 53.This first port 51 is optical coupled with this optical fiber 16, this second end
Mouth 52 is optical coupled with this light source module 12, the 3rd port 53 and this opto-electronic conversion module 14 optics coupling
Closing, this reflecting slant 45 this first plane 31 relative and this second plane 32 tilt and make this light source module
12 light sent enter this second port 52 after this reflecting slant 45 reflects, and make the 3rd port 53
The light sent enters this opto-electronic conversion module 14 after this reflecting slant 45 reflects.
In the present embodiment, this reflecting slant 45 is 45 degree with the angle of this second plane 32.This reflection is oblique
Face 45 smooth surface, it is preferable that high refractive index layer, such as silver layer can be plated on the reflecting surface.With
First embodiment is compared, and the light path of the present embodiment bends at this reflecting slant 45, bending angle
Can be arranged as required to.
Refer to Fig. 3, light R-T unit 500 and the light R-T unit 300 that third embodiment of the invention provides
Comparing essentially identical, difference is the concrete structure difference of the optical branching device used.This light branch
Device includes a reflection micro-structure 60, and this reflection micro-structure 60 includes forming part 600 and this forming part
One micro structure face 601 of 600.In the position of this reflection micro-structure 60 placement and this second embodiment
The position that reflector 450 is placed is identical, relative first plane the 31, second plane 32 of this reflection micro-structure 60
Tilt.Micro structure face 601 is formed by Ultra-precision Turning, controls the fine structure in this micro structure face 601
So that this second light beam L2 reflexes to opto-electronic conversion module 14, and it is saturating that the first light beam L1 is reflexed to the 3rd
Mirror portion.Such as, on this micro structure face 601, it is a bulge-structure at the drop point of this first light beam L1,
And be a sunk structure etc. at the drop point of the second light beam L2, in a word, in conjunction with this light source module 12 and light
Electricity conversion module 14 and the position of the 3rd lens section 183, and consider the first light beam L1 and the second light beam
The wavelength of L2 designs the micro structure at each light beam drop point, thus it is overall to form this reflection micro-structure 60.
Fig. 3 uses stair-stepping rough surface to illustrate this micro structure face 601.
This reflection micro-structure 60 and this camera lens module 18 can be one-body molded by the way of ejection formation,
The refractive index of this reflection micro-structure 60 is less than the refractive index of this camera lens module 18 to prevent any light beam
Reflect away at this reflection micro-structure 60.This reflection micro-structure 60 most importantly its micro structure face
601, other part, such as this reflection micro-structure 60 substantially molding in triangular prism structure in the present embodiment
Portion 600 can remove, can reduce or become other shape.
The present invention utilizes the optical branching device of various multi-form to make the light beam on different path can be combined in one
In bar optical fiber, transmission can isolate again the light beam on different path, it is possible to reduces the quantity of optical fiber, reduces light
The volume of transmitting-receiving module.It addition, in general, optical branching device is as passive optical assembly in use
Need to be independently operated, with other optical module and optical branching device is formed directly into active optics by the present invention
The inside of assembly (i.e. camera lens module), so having only to use the optical fiber of few bar just may be used at defeated in/out end
To reach multi channel demand, to reach to save space-efficient effect.
It is understood that those skilled in the art also can do other change in spirit of the present invention, all
Within scope of the present invention should being included in.
Claims (1)
1. a light R-T unit, including a light source module for sending the first light beam, a photoelectricity
Conversion module is for receiving the second light beam, it is characterised in that this light R-T unit also includes:
Only one optical fiber, is used for transmitting this first, second light beam；
One camera lens module, this camera lens module includes a resettlement section, and this resettlement section has one first
Lens section, the second lens section and the 3rd lens section, these three lens sections respectively with this light source module,
This opto-electronic conversion module, this optical fiber optical alignment, this resettlement section has the first plane and the second plane,
This first, second lens section is respectively positioned on the diverse location of this first plane, and the 3rd lens section is positioned at this
Second plane, this first, second light beam enters this opto-electronic conversion module respectively through corresponding lens section
Or sending from this light source module, this first, second plane is mutually perpendicular to；And
One optical branching device, is positioned at this resettlement section, be used for guiding this first light beam enter this optical fiber with
And guide this second light beam spread out of in this optical fiber to include to this opto-electronic conversion module, this optical branching device
One reflection micro-structure, this reflection micro-structure is relative to this first plane, this second planar tilt, and this is anti-
Penetrating micro structure and have a micro structure face, this second light beam is incident upon this micro structure via the 3rd lens section
Face, this micro structure face makes this second light beam reflex to this second lens section, this first light beam via this
One lens section is incident upon this micro structure face, and this micro structure face makes this first light beam reflex to the 3rd lens section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110408549.0A CN103163598B (en) | 2011-12-09 | Light R-T unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110408549.0A CN103163598B (en) | 2011-12-09 | Light R-T unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103163598A CN103163598A (en) | 2013-06-19 |
| CN103163598B true CN103163598B (en) | 2016-12-14 |
Family
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| DE3546082A1 (en) * | 1985-11-16 | 1987-05-21 | Ant Nachrichtentech | Optical wavelength multiplexer |
| EP0848270A1 (en) * | 1996-12-10 | 1998-06-17 | Mitsubishi Gas Chemical Company, Inc. | Optical transmitter and receiver device |
| US6106160A (en) * | 1997-08-18 | 2000-08-22 | Alps Electric Co., Ltd. | Optical transmitting and receiving module |
| US6480647B1 (en) * | 1998-06-04 | 2002-11-12 | Nec Corporation | Waveguide-type wavelength multiplexing optical transmitter/receiver module |
| CN1384378A (en) * | 2001-04-23 | 2002-12-11 | 欧姆龙株式会社 | Optical element and optical transceiver and other optical equipment with the optical element |
| KR20040025202A (en) * | 2002-09-18 | 2004-03-24 | 포테나 옵틱스 코포레이션 | Bidirectional optical transceiver module using a single optical fiber, and an optical waveguide used in the same |
| CN2689260Y (en) * | 2003-09-22 | 2005-03-30 | 捷耀光通讯股份有限公司 | Fixer of two-dimensional optical transmit-receive modular set |
| CN1737619A (en) * | 2004-05-07 | 2006-02-22 | 光子学测量有限公司 | Optical duplexer and optical triplexer |
| CN1973228A (en) * | 2004-06-24 | 2007-05-30 | 福希纳光学公司 | Bidirectional optical transceiver module using a single optical fiber cable |
| CN201051158Y (en) * | 2007-07-02 | 2008-04-23 | 深圳新飞通光电子技术有限公司 | PLC single fiber bidirectional three-port component |
| CN101900858A (en) * | 2005-09-20 | 2010-12-01 | 财团法人工业技术研究院 | Bidirectional light receiving and transmitting submodule |
| CN101903816A (en) * | 2007-12-17 | 2010-12-01 | 日立化成工业株式会社 | Optical waveguide for visible light |
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3546082A1 (en) * | 1985-11-16 | 1987-05-21 | Ant Nachrichtentech | Optical wavelength multiplexer |
| EP0848270A1 (en) * | 1996-12-10 | 1998-06-17 | Mitsubishi Gas Chemical Company, Inc. | Optical transmitter and receiver device |
| US6106160A (en) * | 1997-08-18 | 2000-08-22 | Alps Electric Co., Ltd. | Optical transmitting and receiving module |
| US6480647B1 (en) * | 1998-06-04 | 2002-11-12 | Nec Corporation | Waveguide-type wavelength multiplexing optical transmitter/receiver module |
| CN1384378A (en) * | 2001-04-23 | 2002-12-11 | 欧姆龙株式会社 | Optical element and optical transceiver and other optical equipment with the optical element |
| KR20040025202A (en) * | 2002-09-18 | 2004-03-24 | 포테나 옵틱스 코포레이션 | Bidirectional optical transceiver module using a single optical fiber, and an optical waveguide used in the same |
| CN2689260Y (en) * | 2003-09-22 | 2005-03-30 | 捷耀光通讯股份有限公司 | Fixer of two-dimensional optical transmit-receive modular set |
| CN1737619A (en) * | 2004-05-07 | 2006-02-22 | 光子学测量有限公司 | Optical duplexer and optical triplexer |
| CN1973228A (en) * | 2004-06-24 | 2007-05-30 | 福希纳光学公司 | Bidirectional optical transceiver module using a single optical fiber cable |
| CN101900858A (en) * | 2005-09-20 | 2010-12-01 | 财团法人工业技术研究院 | Bidirectional light receiving and transmitting submodule |
| CN201051158Y (en) * | 2007-07-02 | 2008-04-23 | 深圳新飞通光电子技术有限公司 | PLC single fiber bidirectional three-port component |
| CN101903816A (en) * | 2007-12-17 | 2010-12-01 | 日立化成工业株式会社 | Optical waveguide for visible light |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20171209 |