CN109683255A - A kind of LD tube core and a kind of TOSA module - Google Patents
A kind of LD tube core and a kind of TOSA module Download PDFInfo
- Publication number
- CN109683255A CN109683255A CN201811582957.6A CN201811582957A CN109683255A CN 109683255 A CN109683255 A CN 109683255A CN 201811582957 A CN201811582957 A CN 201811582957A CN 109683255 A CN109683255 A CN 109683255A
- Authority
- CN
- China
- Prior art keywords
- reflecting mirror
- chip
- core
- condenser lens
- tube core
- 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.)
- Pending
Links
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
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4206—Optical features
-
- 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
- G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
-
- 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
Abstract
The present invention relates to optical device fields, more particularly to a kind of LD tube core and a kind of TOSA module, LD tube core includes core, is located at the intracorporal LD chip of core, reflecting mirror and condenser lens, reflecting mirror is neighbouring to be set to LD chip, LD chip emission optical signal is to reflecting mirror, optical signal is converted 90 ° of directions and form collimated light signal by reflecting mirror is transferred to condenser lens, and condenser lens transmits out core after focusing collimated light signal；Wherein, reflecting mirror is off-axis parabolic mirror.Reflecting mirror is neighbouring to be set to LD chip, has compressed beam cross section product of the optical signal after reflecting mirror to reduce diaphragm loss when passing through condenser lens and improves coupling efficiency.
Description
Technical field
The present invention relates to optical device fields, and in particular to a kind of LD tube core and a kind of TOSA module.
Background technique
TOSA module (Transmitter Optical Subassembly, Chinese are known as light emitting secondary module), being used for will
Electric signal is converted into optical signal.TOSA module often passes through TO packaged type and forms, and there is the common optical path of TOSA module after TO encapsulation
Two kinds: the first is LD chip, lens and ceramic insertion core coaxial packaging；Second for LD chip using saturating after reflecting mirror
Mirror and ceramic insertion core.
Above-mentioned TO encapsulation after TOSA module in, LD chip issue optical signal can pass through lens, but need by compared with
It over long distances could coupled into optical fibres.In the environment of high temperature or low temperature, due to the deformation difference meeting of internal components and lens mount
Object distance is caused to change, and in the process, what the deformational displacement deficiency and object distance that ceramic insertion core change in location generates generated
Variable quantity matches, thus, optical signal is unable to efficient coupling into the optical fiber in ceramic insertion core, leads to the coupling efficiency of TOSA module
It reduces, and then leads to the reduction of output power.
Simultaneously as the LD chip angle of divergence is larger, the divergent beams that LD chip issues have biggish when passing through lens focus
Diaphragm loss generally requires the effective clear aperature for increasing lens, will so bring in cost to reduce energy loss
It improves.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, provide a kind of LD tube core and
A kind of TOSA module, the optical signal for solving LD chip emission lose object distance and picture under larger and high/low temperature by lens back stop
Lead to the problem that TOSA modular power is unstable under high/low temperature away from variable quantity mismatch.
To solve this technical problem, the present invention provides a kind of LD tube core, including core, further includes being located at the intracorporal LD core of core
Piece, reflecting mirror and condenser lens, the reflecting mirror is neighbouring to be set to LD chip, the LD chip emission optical signal to reflecting mirror,
Optical signal is converted 90 ° of directions and form collimated light signal by the reflecting mirror is transferred to condenser lens, and the condenser lens will be quasi-
Collimated optical signal transmits out core after focusing；Wherein, the reflecting mirror is off-axis parabolic mirror.
Wherein, preferred version is: the LD chip and reflecting mirror are arranged on the same plane of same object.
Wherein, preferred version is: the core includes carrier and the pipe cap for being fixedly connected with carrier, the carrier and pipe cap
Between shape forming cavity, it is intracavitary that the LD chip and reflecting mirror are each provided at type.
Wherein, preferred version is: the condenser lens is located on pipe cap.
Wherein, preferred version is: the LD tube core further includes that the intracavitary temperature control plate of type is arranged in and is mounted on temperature control plate
On substrate, the LD chip and reflecting mirror setting on the surface of the substrate.
Wherein, preferred version is: the distance range of the LD chip and reflecting mirror is 0.2mm to 1mm.
The present invention also provides a kind of TOSA module, the TOSA module includes LD tube core as described above, further includes fixing
It connects the soldering and sealing tube body of LD tube core and is fixedly connected with the receptacle component of soldering and sealing tube body, the receptacle component packet
Ceramic insertion core is included, optical fiber, the optical signal coupled into optical fibres that the condenser lens focuses are equipped with inside the ceramic insertion core.
Wherein, preferred version is: the receptacle component further includes isolator, the light letter that the condenser lens focuses
The coupled into optical fibres number after isolator.
The beneficial effects of the present invention are compared with prior art, the present invention is by designing a kind of LD tube core and one kind
TOSA module, LD chip transmit optical signal to reflecting mirror, and reflecting mirror is neighbouring to be set to LD chip, has compressed optical signal by reflecting mirror
Beam cross section product afterwards improves coupling efficiency to reduce diaphragm loss when passing through condenser lens；In addition, after reflection
Optical signal be collimated light beam, condenser lens is focused to collimated light beam, it is only necessary to be selected to correspond to according to the size of LD tube core
Condenser lens, improve the flexibility ratio of device；And LD chip and reflecting mirror are located on the same plane of same object, are reduced
Influence to object distance, to improve the stability of the output power of optical signal.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the schematic diagram of LD tube core of the present invention；
Fig. 2 is the path profile of optical signal transmission of the present invention.
Specific embodiment
Now in conjunction with attached drawing, elaborate to presently preferred embodiments of the present invention.
As depicted in figs. 1 and 2, the present invention provides a kind of preferred embodiment of LD tube core.
Specifically, with reference to Fig. 1, a kind of LD tube core, TO encapsulation is to draw the encapsulation of pin, and the LD tube core includes core
10, and the LD chip 1, reflecting mirror 2 and the condenser lens 3 that are located in core 10, the reflecting mirror 2 is neighbouring to be set to LD chip 1
Side, the condenser lens 3 are located at after reflecting mirror 2 reflects in the transmission path of optical signal.The LD chip 1 emits optical signal
To reflecting mirror 2, optical signal is converted 90 ° of directions and forms collimated light signal by the reflecting mirror 2, i other words, the reflecting mirror 2 exists
Optical signal is collimated while 90 ° of transmitting photo-signal, then by optical signal transmission to condenser lens 3, the condenser lens 3 will collimation
Optical signal transmits out core 10 after focusing.Wherein, the reflecting mirror 2 is off-axis parabolic mirror, off-axis parabolic mirror
It is provided simultaneously with the function of reflecting optical signal and collimate.The optical signal of transmission is converted to after reflecting mirror 2 by radial transport
Axial transmission, LD die internal device are no longer influenced by axial deformation, and radial deformation is very small, therefore, either high
In the environment of temperature or low temperature, it can effectively avoid LD die internal optical device to the influence of object distance, improve optical signal
Coupling efficiency also just improves the stability of the output power of optical signal.In addition, after the optical signal of reflecting mirror 2 is collimation
Collimated light beam, the condenser lens 3 be collimated light beam is focused, thus, it is only necessary to selected according to the size of LD tube core corresponding
The condenser lens 3 of focal length, the condenser lens 3 of common spherical surface can be achieved with greatly proposing the well focussed effect of collimated light beam
The high range of choice of condenser lens 3 and the flexibility ratio range of LD die-size；For example, if necessary to large-sized LD
The long condenser lens 3 focused then can be selected in tube core, and if necessary to the LD tube core of small size, then the focusing that short focusing can be selected is saturating
Mirror 3.
In the present embodiment, with reference to Fig. 1, the LD chip 1 and reflecting mirror 2 are arranged on the same plane of same object,
And the two is fixed setting.The LD chip 1 and reflecting mirror 2 are in the same plane of same object, can be located at object distance together
On the same plane of one object, influence of the external environment to object distance is reduced, to stabilize the output power of optical signal.And
And the LD chip 1 and reflecting mirror 2 are neighbouring settings, are closer, the optical signal that the LD chip 1 issues can be passed radially
It is just reflected by reflecting mirror 2 after defeated shorter light path, beam cross section product of the optical signal on reflecting mirror 2 can be compressed, reduce light letter
It number is lost by the diaphragm that is generated when condenser lens 3, improves the coupling efficiency of optical signal as a result, also just improve optical signal
Output power；And compression light beam sectional area can also reduce the requirement to 3 clear aperature of condenser lens, also just reduce
The cost of TO encapsulation.
Further, with reference to Fig. 1, the core 10 includes carrier 20 and the pipe cap 30 for being fixedly connected with carrier 20, described
Shape forming cavity 31 between carrier 20 and pipe cap 30, the LD chip 1 and reflecting mirror 2 are each provided in type chamber 31.The type chamber 31 is
Confined space can protect LD chip 1 and reflecting mirror 2.
Still further, the condenser lens 3 is fixedly mounted on pipe cap 30 with reference to Fig. 1.
Further, with reference to Fig. 1, the LD tube core further includes the temperature control plate 4 being arranged in type chamber 31 and is mounted on
The surface of substrate 5 is arranged in substrate 5 on temperature control plate 4, the LD chip 1 and reflecting mirror 2, and is fixed setting.The base
Plate 5 is equipped with routing PAD, can provide routing position for LD chip 1 and reflecting mirror 2, and can provide for LD chip 1 and reflecting mirror 2
Supporting role.Under the action of temperature control plate 4 and substrate 5, the LD chip 1 and reflecting mirror 2 work under constant working temperatures environment
Make, can be improved the stability of LD chip 1 and reflecting mirror 2.
Preferably, the distance range of the LD chip 1 and reflecting mirror 2 is 0.2mm to 1mm, and the distance of the two is very close, institute
It states the optical signal that LD chip 1 is launched just to be reflected by reflecting mirror 2 after shorter light path, and the two is in equality of temperature plane, energy
Enough beam cross section product of the compression optical signal after reflecting mirror 2, reduce optical signal and are damaged by the diaphragm generated when condenser lens 3
Consumption, improves the coupling efficiency of optical signal as a result, also just improves the output power of optical signal；And compression light beam sectional area
The requirement to 3 clear aperature of condenser lens can also be reduced, the cost of TO encapsulation is also just reduced.
As depicted in figs. 1 and 2, the present invention also provides a kind of preferred embodiments of TOSA module.
Specifically, with reference to Fig. 1 and Fig. 2, it further includes being fixedly connected with LD that the TOSA module, which includes LD tube core as described above,
The soldering and sealing tube body 40 of tube core and the receptacle component 50 for being fixedly connected with soldering and sealing tube body 40, during the soldering and sealing tube body 40 can rise
Turn supporting role, the receptacle component 50 includes ceramic insertion core 53, is equipped with optical fiber 51, institute inside the ceramic insertion core 53
The optical signal for stating the focusing of condenser lens 4 is transferred to inside ceramic insertion core 50 all the way after transmitting out core 10, and couples entering light
Fibre 51 realizes that electric signal is converted to optical signal.
Further, with reference to Fig. 1, the receptacle component 50 further includes isolator 52, and the condenser lens 4 focuses
Optical signal pass through isolator 52 and then coupled into optical fibres 51.The isolator 52 can prevent the anti-of 53 end face of ceramic insertion core
Light is penetrated to return along original optical path.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
Any modification made all within the spirits and principles of the present invention, equivalent replacement, improve etc., it should be included in guarantor of the invention
It protects in range.
Claims (8)
1. a kind of LD tube core, including core, it is characterised in that: further include being located at the intracorporal LD chip of core, reflecting mirror and focusing
Lens, the reflecting mirror is neighbouring to be set to LD chip, the LD chip emission optical signal to reflecting mirror, and the reflecting mirror is by optical signal
It converts 90 ° of directions and forms collimated light signal and be transferred to condenser lens, the condenser lens transmits after focusing collimated light signal
Core out；Wherein, the reflecting mirror is off-axis parabolic mirror.
2. LD tube core according to claim 1, it is characterised in that: same object is arranged in the LD chip and reflecting mirror
On same plane.
3. LD tube core according to claim 2, it is characterised in that: the core includes carrier and is fixedly connected with carrier
It is intracavitary that pipe cap, shape forming cavity between the carrier and pipe cap, the LD chip and reflecting mirror are each provided at type.
4. LD tube core according to claim 3, it is characterised in that: the condenser lens is located on pipe cap.
5. LD tube core according to claim 3, it is characterised in that: the LD tube core further includes that the intracavitary temperature control of type is arranged in
Plate and the substrate being mounted on temperature control plate, the LD chip and reflecting mirror setting are on the surface of the substrate.
6. LD tube core according to any one of claims 1 to 5, it is characterised in that: LD chip model at a distance from reflecting mirror
It encloses for 0.2mm to 1mm.
7. a kind of TOSA module, it is characterised in that: the TOSA module includes the LD tube core as described in claim 1 to 6 is any,
It further include the soldering and sealing tube body for being fixedly connected with LD tube core and the receptacle component for being fixedly connected with soldering and sealing tube body, it is described
Receptacle component includes ceramic insertion core, and optical fiber, the optical signal that the condenser lens focuses are equipped with inside the ceramic insertion core
Coupled into optical fibres.
8. TOSA module according to claim 7, it is characterised in that: the receptacle component further includes isolator,
The optical signal that the condenser lens focuses coupled into optical fibres after isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582957.6A CN109683255A (en) | 2018-12-24 | 2018-12-24 | A kind of LD tube core and a kind of TOSA module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582957.6A CN109683255A (en) | 2018-12-24 | 2018-12-24 | A kind of LD tube core and a kind of TOSA module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109683255A true CN109683255A (en) | 2019-04-26 |
Family
ID=66188253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811582957.6A Pending CN109683255A (en) | 2018-12-24 | 2018-12-24 | A kind of LD tube core and a kind of TOSA module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109683255A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234429A (en) * | 2020-12-10 | 2021-01-15 | 武汉乾希科技有限公司 | Multichannel laser transmitter and optical communication device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1758081A (en) * | 2004-10-07 | 2006-04-12 | 安捷伦科技有限公司 | Optoelectronic module with high coupling efficiency |
| JP2012163902A (en) * | 2011-02-09 | 2012-08-30 | Sumitomo Electric Ind Ltd | Optical module |
| CN103411891A (en) * | 2013-07-29 | 2013-11-27 | 南开大学 | Terahertz (THz) super-resolution imaging method and system |
| US20160291268A1 (en) * | 2015-03-30 | 2016-10-06 | Oki Electric Industry Co., Ltd. | Bidirectional optical communication module |
-
2018
- 2018-12-24 CN CN201811582957.6A patent/CN109683255A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1758081A (en) * | 2004-10-07 | 2006-04-12 | 安捷伦科技有限公司 | Optoelectronic module with high coupling efficiency |
| JP2012163902A (en) * | 2011-02-09 | 2012-08-30 | Sumitomo Electric Ind Ltd | Optical module |
| CN103411891A (en) * | 2013-07-29 | 2013-11-27 | 南开大学 | Terahertz (THz) super-resolution imaging method and system |
| US20160291268A1 (en) * | 2015-03-30 | 2016-10-06 | Oki Electric Industry Co., Ltd. | Bidirectional optical communication module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234429A (en) * | 2020-12-10 | 2021-01-15 | 武汉乾希科技有限公司 | Multichannel laser transmitter and optical communication device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190426 |
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| RJ01 | Rejection of invention patent application after publication |