CN105278057A - Alignment method of optical transceiver of short-distance free-space optical intercommunication - Google Patents

Alignment method of optical transceiver of short-distance free-space optical intercommunication Download PDF

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Publication number
CN105278057A
CN105278057A CN201510764137.9A CN201510764137A CN105278057A CN 105278057 A CN105278057 A CN 105278057A CN 201510764137 A CN201510764137 A CN 201510764137A CN 105278057 A CN105278057 A CN 105278057A
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CN
China
Prior art keywords
optical transceiver
alignment
laser
free space
alignment bracket
Prior art date
Application number
CN201510764137.9A
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Chinese (zh)
Other versions
CN105278057B (en
Inventor
柴常春
孙斌
陈鹏远
杨银堂
刘阳
樊庆扬
于新海
史春蕾
杨琦
Original Assignee
西安电子科技大学
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Application filed by 西安电子科技大学 filed Critical 西安电子科技大学
Priority to CN201510764137.9A priority Critical patent/CN105278057B/en
Publication of CN105278057A publication Critical patent/CN105278057A/en
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Publication of CN105278057B publication Critical patent/CN105278057B/en

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4219Mechanical 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
    • G02B6/4228Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4219Mechanical 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
    • G02B6/4236Fixing or mounting methods of the aligned elements
    • G02B6/4237Welding
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4219Mechanical 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
    • G02B6/4236Fixing or mounting methods of the aligned elements
    • G02B6/4239Adhesive bonding; Encapsulation with polymer material
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4219Mechanical 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
    • G02B6/4236Fixing or mounting methods of the aligned elements
    • G02B6/4245Mounting of the opto-electronic elements

Abstract

The invention discloses an alignment method of an optical transceiver of short-distance free-space optical intercommunication. With the method, a problem of difficult installation alignment of a laser transmitter and a laser receiver can be solved. According to the method, a packaging parameter of an optical transceiver is determined; an alignment support is manufactured based on the parameter; a laser transmitter and a laser receiver are bonded to the alignment support; and when welding installation is carried out. The provided method has advantages of simple alignment process and high alignment precision.

Description

The closely alignment methods of free space optical interconnection optical transceiver

Technical field

The invention belongs to microelectronics and physics and field of photoelectric technology, relate to be in free space optical interconnection technology generating laser and laser pickoff aim at installation method, be mainly used in installing in alignment procedures at the optical transceiver (Laser emission and receiving chip are all at the center of generating laser and laser pickoff) of closely free space optical interconnection.

Background technology

Along with digitized process, the process of data, storage and transmission obtain development at full speed.Two-forty, the requirement of wide bandwidth makes the inter-chip interconnects based on copper cash become the bottleneck of restriction system performance.Interconnection technique is the main bugbear of hardware technology, and traditional electrical interconnection technology has encountered the obstacle being difficult to go beyond.Light network technology with its high communication bandwidth, light wave independent propagation is noiseless, number of interconnections is large, interconnection density is high and the advantage such as low in energy consumption, becomes the interconnection technique of a new generation gradually.From the channel that light network adopts, light network can be divided into: free-space interconnection, waveguide interconnection and optical fiber interconnections.Free space optical interconnection technology is most attractive force in light network technology, this technology is that the light beam by propagating in free space carries out data transmission, be applicable to the connection between chip and between circuit board on this level, there is not the restriction of bandwidth, be easy to realize reconstruct interconnection.Along with laser technology develops rapidly, a large amount of Laser Devices, optical element and assembly is contained in system, during in order to ensure system each run, the laser beam sent from laser instrument can be stablized, be accurately irradiated to miniature target body, and laser aid is all configured with light path alignment system.

Because free space optical interconnection should be aimed to greatest extent when the installation of optical transceiver, in Laser Transmission, the energy that laser system exports could be focused in target to greatest extent like this, if be not be difficult to aim at by any extraneous aid.Laser is to carrying out light path aligning by optics micropositioning stage on time, but this method is difficult to accomplish to the closely aligning of free space optical interconnection optical transceiver, because the aligning of optical transceiver and welded and installed can not be carried out and there is potential safety hazard, so optics micropositioning stage is unavailable in actual installation simultaneously.Therefore closely light network is badly in need of the optical transceiver alignment methods of some practicalities, solves the alignment issues in actual installation.

Summary of the invention

The present invention is based on the deficiency of existing standard and technology, aim to provide a kind of free space optical interconnection optical transceiver that can make and the method for aiming at is installed.

To achieve these goals, the present invention adopts following technical scheme:

Closely an alignment methods for free space optical interconnection optical transceiver, is characterized in that, comprises the following steps:

(1) for an alignment bracket made to measure by generating laser and laser pickoff;

(2) generating laser and receiver are bonded on support;

(3) install: first by the alignment bracket of bonding optical transceiver and substrate bonding, then the pin of optical transceiver is welded with the solder joint of substrate.

Described step (1) specific implementation step is as follows:

A () determines the package dimension of optical transceiver, measure diameter and the length of official's cap of optical transceiver;

B () makes alignment bracket: on alignment bracket main body, be provided with arc groove, the diameter at arc groove two ends is consistent with the diameter of official's cap of optical transceiver, the length of rack body meets the required distance of free space Laser Transmission, and make the axis of generating laser and laser pickoff on same straight line, guarantee that optical transceiver is aimed at.

Described step (2) concrete grammar is adhered to respectively in the two ends of the arc groove of alignment bracket by official's cap of generating laser and laser pickoff.

The material of described alignment bracket comprises metal, pottery, tempered glass or does not impact and the other materials of not easily deformation circuit and Laser Transmission.

The invention has the beneficial effects as follows:

(1) improve the alignment precision of optical transceiver;

(2) aim at and install and can carry out simultaneously;

(3) install process in without the need to measuring laser.Power density due to some laser instrument is large and consider security, is difficult to directly measure.Adopt this alignment methods, aligning can be made to weld more safe and reliable.

Accompanying drawing explanation

Fig. 1 is the package dimension schematic diagram of generating laser;

Fig. 2 is the package dimension schematic diagram of laser pickoff;

Fig. 3 is the perspective view of alignment bracket;

Fig. 4 is the perspective view after adopting the present invention to install laser transceiver in alignment bracket;

Fig. 5 is the cut-open view of Fig. 4.

Embodiment

For enabling above-mentioned purpose of the present invention, feature and advantage obviously easy to understand, below in conjunction with specific embodiment, the present invention is described in detail.

Specific implementation step of the present invention is as follows:

The first step, determines the package dimension of optical transceiver.

With reference to Fig. 1, it is the encapsulation parameter of generating laser 1; With reference to Fig. 2, be laser pickoff 2(detector) encapsulation parameter, b under normal circumstances 1=b 2, suppose a 1<a 2.

Second step, makes alignment bracket 3.

With reference to Fig. 3, be the alignment bracket 3 of optical transceiver, the length x of alignment bracket 3 can design according to the distance of laser at free space transmission.Arc groove is provided with, the radius R of the arc groove 32 of one end on alignment bracket 3 main body 1=a 1/ 2 radiuses equaling generating laser 1; The radius R of the arc groove 31 of the other end 2=a 2/ 2 radiuses equaling laser pickoff 2.Make the axis of generating laser 1 and laser pickoff 2 on same straight line, guarantee that optical transceiver is aimed at.

3rd step, is adhered to optical transceiver in alignment bracket 3.

With reference to Fig. 4, generating laser 1 and laser pickoff 2 are stably adhered in alignment bracket 3, make it aim at.

4th step, welded and installed.

First by the alignment bracket 3 of bonding optical transceiver and substrate bonding, then the pin 13 of generating laser 1 and the pin 23 of laser pickoff 2 are welded with the solder joint of substrate.

The making of the alignment bracket 3 of above alignment methods can use the material such as pottery, tempered glass, as long as do not impact and not easily deformation circuit and Laser Transmission.

Claims (4)

1. an alignment methods for closely free space optical interconnection optical transceiver, is characterized in that, comprise the following steps:
(1) for an alignment bracket made to measure by generating laser and laser pickoff;
(2) generating laser and receiver are bonded on support;
(3) install: first by the alignment bracket of bonding optical transceiver and substrate bonding, then the pin of optical transceiver is welded with the solder joint of substrate.
2. the alignment methods of closely free space optical interconnection optical transceiver according to claim 1, is characterized in that, described step (1) specific implementation step is as follows:
A () determines the package dimension of optical transceiver, measure diameter and the length of official's cap of optical transceiver;
B () makes alignment bracket: on alignment bracket main body, be provided with arc groove, the diameter at arc groove two ends is consistent with the diameter of official's cap of optical transceiver, the length of rack body meets the required distance of free space Laser Transmission, and make the axis of generating laser and laser pickoff on same straight line, guarantee that optical transceiver is aimed at.
3. the alignment methods of closely free space optical interconnection optical transceiver according to claim 1, it is characterized in that, described step (2) concrete grammar is adhered to respectively in the two ends of the arc groove of alignment bracket by official's cap of generating laser and laser pickoff.
4. the alignment methods of closely free space optical interconnection optical transceiver according to claim 1, it is characterized in that, the material of described alignment bracket comprises metal, pottery, tempered glass or does not impact and the other materials of not easily deformation circuit and Laser Transmission.
CN201510764137.9A 2015-11-11 2015-11-11 Closely alignment methods of free space optical interconnection optical transceiver CN105278057B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510764137.9A CN105278057B (en) 2015-11-11 2015-11-11 Closely alignment methods of free space optical interconnection optical transceiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510764137.9A CN105278057B (en) 2015-11-11 2015-11-11 Closely alignment methods of free space optical interconnection optical transceiver

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CN105278057A true CN105278057A (en) 2016-01-27
CN105278057B CN105278057B (en) 2017-10-10

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201392206Y (en) * 2009-03-27 2010-01-27 上海派恩科技有限公司 Opposed type laser detector
JP2012050329A (en) * 2011-11-24 2012-03-08 Nitto Denko Corp Permanent magnet for motor and manufacturing method of permanent magnet for motor
JP2012150329A (en) * 2011-01-20 2012-08-09 Sumitomo Electric Ind Ltd Manufacturing method for optical module
CN203133366U (en) * 2012-12-26 2013-08-14 重庆川仪自动化股份有限公司 Laser optical path focal length adjusting device
US20130272665A1 (en) * 2012-04-16 2013-10-17 Electronics And Telecommunications Research Institute Multi-channel optical module
CN204302538U (en) * 2014-12-30 2015-04-29 厦门市贝莱通信设备有限公司 A kind of BOSA assembly with isolation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201392206Y (en) * 2009-03-27 2010-01-27 上海派恩科技有限公司 Opposed type laser detector
JP2012150329A (en) * 2011-01-20 2012-08-09 Sumitomo Electric Ind Ltd Manufacturing method for optical module
JP2012050329A (en) * 2011-11-24 2012-03-08 Nitto Denko Corp Permanent magnet for motor and manufacturing method of permanent magnet for motor
US20130272665A1 (en) * 2012-04-16 2013-10-17 Electronics And Telecommunications Research Institute Multi-channel optical module
CN203133366U (en) * 2012-12-26 2013-08-14 重庆川仪自动化股份有限公司 Laser optical path focal length adjusting device
CN204302538U (en) * 2014-12-30 2015-04-29 厦门市贝莱通信设备有限公司 A kind of BOSA assembly with isolation

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