CN1960089A - Light source, light transmitter, and method - Google Patents
Light source, light transmitter, and method Download PDFInfo
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- CN1960089A CN1960089A CNA200510101124XA CN200510101124A CN1960089A CN 1960089 A CN1960089 A CN 1960089A CN A200510101124X A CNA200510101124X A CN A200510101124XA CN 200510101124 A CN200510101124 A CN 200510101124A CN 1960089 A CN1960089 A CN 1960089A
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Abstract
The light transmitter includes a light source, and a casing pipe retained on two sides of a base of light source. The light source includes a tube core of laser, a laser carrier, a back light detector, and a carrier for back light detector closed inside an inclosed space formed from closed a tube seat and a tube cap. The tube core of laser is positioned at the laser carrier, and the back light detector is positioned at the carrier for back light detector. It is intersected to form an angle between end face of tube core of laser towards the tube cap and direction perpendicular to central axis of light source. The invention overcomes defect existed in current technique that light transmitter has to use other means such as more elements and parts, and more complex procedures to eliminate reflected light of entered to light source caused by sensitivity of light source to outer reflected light.
Description
Affiliated technical field
The invention belongs to optical-fibre communications field, especially about a kind of light emitting devices and light source thereof.
Background technology
Along with advancing by leaps and bounds of informatization, people are vigorous day by day for the demand of multimedia communications such as data, voice, image, more and more important position that the Ethernet broadband access method is therefore referred.But 5 traditional class line cables can only be with 100 meters of Ethernet signal of telecommunication transmission, at the needs that can not adapt to the real network environment aspect transmission range and the coverage.Meanwhile, optical fiber communication, good confidentiality big with its information capacity, in light weight, volume is little, non-relay, transmission range is long etc., and advantage has obtained using widely in catenets such as wide area network.In some larger enterprises, directly use optical fiber to set up backbone network during networking as transmission medium, and the transmission medium of internal lan is generally copper cash, how to realize that local area network (LAN) links to each other with the optical fiber backbone network? this just need change and guarantee link quality between different port, different linear, different fiber.The appearance of fiber optical transceiver is changed the twisted-pair feeder signal of telecommunication and light signal mutually, has guaranteed packet smooth and easy transmission between two networks.Simultaneously it expands to 100 kilometers (monomode fibers) with the transmission range limit of network from 100 meters of copper cash.Light emitting devices has also obtained developing widely and using as the important composition element that in the fiber optical transceiver signal of telecommunication is transformed into corresponding light signal.
Typical light emitting devices comprises a light source 10 and an accurate autoregistration device 20 as shown in Figure 1.This precision autoregistration device 20 comprises a transition rings 22, one a short lock pin 24 and a split coupling 26.The short lock pin 24 that is positioned in the split coupling 26 is made by zirconia ceramics, and it comprises that an aperture runs through the center holding an optical fiber 244, and the end face of short lock pin 24 contiguous light sources 10 is one to become the inclined plane 242 at 8 degree angles with the central axis vertical direction.This light source 10 comprises that a coaxial encapsulated semiconductor laser 12 is immobilizated in the metal pedestal 14.Transition rings 22 is positioned to remain silent between sleeve pipe 26 and the metal pedestal 14, and is fixed by the spot welding interconnection technique.The use of transition rings makes that the distance of optical fiber is adjustable in laser 12 and the short lock pin 24, different laser light sources can by adjusting be able to short lock pin 24 in optical fiber 244 reach the Best Coupling effect.
Current, the main index of weighing the light emitting devices performance has two, and the first is from the size of the luminous power of optical fiber connector output, and international standard values such as ITU-T and IEEE are generally at-11dbm to 0dbm.They are two years old, because the light source in the general light emitting devices of industry reverberation to external world is very responsive, the resonant cavity that reverberation can enter into laser influences its operate as normal (shown in Fig. 4 a), because light source itself does not possess the extraneous catoptrical ability of opposing, so it is exactly the size that turns back to the reflected optical power (abbreviation reverberation) of laser tube core from the pluggable light fiber connector that industry is weighed second index of optical transmitting set performance, reflected optical power is more little, the emission eye pattern of light emitting devices is clear more, signal to noise ratio is high more, and the distance of transmission is far away more.The design of the inclined end face of the short lock pin in the above traditional structure promptly is in order to obtain higher reflective character (shown in Fig. 4 b), and this structure generally can obtain-reverberation loss about 40db, also can reach-the coupled optical power requirement of 11dbm to 0dbm.But the material that this structure is used is many, and cost is higher; And also more complicated of technology, consuming time more; And because the defective of the reverberation sensitiveness of light source itself, the reverberation drain performance that finished product can be realized is difficult to further be promoted, and can not satisfy to further develop needs future.
Summary of the invention
In order to overcome the prior art light emitting devices because the catoptrical to external world sensitiveness of light source, thereby the mode of having to use other is as components and parts and more complicated flow process are eliminated the catoptrical defective that enters into light source more, the invention provides a kind of, technology simple light emitting devices low to the insensitive light source of reverberation and a kind of cost, and the method for making this light emitting devices.
The present invention solves first technical scheme that its technical problem adopts: a light source comprises that a laser tube core, a laser carrier, a back light detector, a back light detector carrier are closed in by in a base and the closed confined space that forms of a pipe cap, this laser tube core is positioned this laser carrier, and its vertical direction towards the central axis of the end face of pipe cap and light source intersects 3 to 25 degree angles, and this back light detector is positioned this back light detector carrier.
The present invention solves the another technical scheme that its technical problem adopts: a light emitting devices comprises that a light source and a sleeve pipe are immobilizated in the both sides of a light source base respectively, this light source one light source comprises a laser tube core, one laser carrier, one back light detector, one back light detector carrier is closed in by in a base and the closed confined space that forms of a pipe cap, this laser tube core is positioned this laser carrier, this back light detector is positioned this back light detector carrier, and this laser tube core intersects 3 to 25 degree angles towards the vertical direction of the central axis of the end face of pipe cap and light source.
The present invention solves the another technical scheme that its technical problem adopts: a back light detector carrier is fixed in a base; One laser tube core is fixed in a Die carrier and makes the light output end of tube core become 3 to 25 degree angles with the vertical line of the center line of carrier; Die carrier is fixed in base; With base and a pipe cap welding so that this tube core and detector sealing are made light source; Light source is fixed in a metal base, a metal sleeve is fixed in the opposite side of metal base; Fine setting forms light emitting devices.
The invention has the beneficial effects as follows, the laser tube core of this light source intersects 3 to 25 degree angles towards the vertical direction of the central axis of the end face of pipe cap and light source, shown in Fig. 4 c, the optical fiber that the laser tube core emergent light can enter in the sleeve pipe transmits, the return reverberation of optical fiber then can not enter the resonant cavity of laser tube core, thereby light source of the present invention itself promptly possesses the ability of antagonistic reflex light, rejected light source from the source to reflecting light activated defective, thereby overcome the prejudice on the light emitting devices technology understanding, turn back to from the pluggable light fiber connector LD tube core reflected optical power (abbreviation reverberation) size no longer become measurement index, can not use other short lock pin of auxiliary accurate expensive device pottery As mentioned above and metal transfer ring to come antagonistic reflex light.Result of the test shows: use light emitting devices of the present invention to reduce cost more than 10%, make technological process shorten 5 steps, reduce the welding times of half.And the optical property aspect can reach coupled power minimum-11dbm equally, maximum+1dbm, and the eye pattern under 155Mb/S speed is suitable substantially with the traditional approach that adopts short lock pin, and the eye opening under 1.25Gb/S satisfies the requirement of TIU-TG.983 fully.And, if the future communications system to the performance requirement of light emitting devices when higher, light emitting devices of the present invention only need simply be added devices such as short lock pin, just can further be upgraded, and traditional devices is difficult to so easily realize.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is traditional light emitting devices profile.
Fig. 2 is the profile of light emitting devices of the present invention.
Fig. 3 is the light source enlarged drawing in the light emitting devices of the present invention.
Fig. 4 a is respectively traditional approach and this practical laser emitting and return index path down to 4c.
Embodiment
Please referring to Fig. 2, an embodiment of light emitting devices of the present invention comprises that a light source 30 and a sleeve pipe 40 are immobilizated in the both sides of a light source base 50 respectively.Sleeve pipe 40 and light source base 50 are made by metal material usually, and fix by the spot welding interconnection technique, and 30 of light sources are fixed in the opposite side of metal base 50 with respect to metal sleeve 40 by spot-welding technology.Unlike the prior art, metal sleeve 40 of the present invention is the sleeve pipe of remaining silent.During work, light source 30 will be transformed into corresponding light signal from the electrical information signal bit stream that the drive circuit transmission comes, and this metal sleeve 40 is coupled to light signal in the pluggable optical fiber connector again, to assigned address, finishes the transmission of signal by Optical Fiber Transmission.
Please in the lump referring to Fig. 3, this light source 30 comprises that a laser tube core 302, a laser tube core carrier 30 as one kind 3, a back light detector 305, a back light detector carrier 30 as one kind 6 are closed in by in a base 308 and a pipe cap 300 closed confined spaces that form.The back light detector carrier 30 as one kind 6 that carries back light detector 305 is adhesively fixed in the central area of base 308 bottoms, the side surface front end of the protuberance 3080 that Die carrier 303 cemented in place that carry laser tube core 302 are stretched out towards pipe cap 300 in base 308.Laser tube core 302 is arranged at the front end of Die carrier 303 at angle, make laser tube core 302 be 3 to 25 degree angles towards the vertical direction of the center line of the end face of pipe cap 300 and light source 30 and sleeve pipe 40, certainly better angle can be arranged in 8 to 11 degree, for obtaining better optical effect, laser tube core 302 optimal setting positions are the downward translation distance d of benchmark with the center line when keeping the angle of 8 to 11 degree, and the scope of d is controlled at 1 to 50um (seeing shown in Fig. 4 c).Base comprises a plurality of pins 307 and reaches electrical interconnects with laser tube core 302 and back light detector 305.This pipe cap 300 can be a globe lens or non-globe lens and form confined space with base 308 weldings, can fill protective gas in the confined space so that laser tube core is carried out good protection.
During manufacturing, the carrier of back light detector is bonded to the back central authorities of base, laser is adhered on the carrier of back light detector, preliminary drying; The LD chip is placed on semiconductor laser tube core carrier front end and be 3 °～15 ° angles with the vertical line of center line, and be the downward translation d (1～50um) of benchmark with the center line, be placed into the front end on the extension top of base together, the central lines of its center line and semiconductor laser tube core carrier, heat-agglomerating, electrically connect baking after the cooling; The technology that adopts the moment localized heating with the pipe cap of globe lens or non-globe lens and obedient sheet/key and after base be welded together; To remain silent high technology ceramics sleeve pipe and porcelain bushing metallic sheath is bonded as one, insert optical patchcord and connect with light power meter, packaged Laser Devices are powered up, and insert in the semiconductor laser metal pedestal, fixedly porcelain bushing metallic sheath and Laser Devices and 3 are tieed up the Precision trimming framves, regulate the X/Y/Z regulating shaft and make Output optical power reach desired value, use the YAG laser spot welding to fix, thereby make light emitting devices of the present invention.
Laser tube core of the present invention can be any one in Fabry-Perot semiconductor laser (FP-LD), distribution feed-back type laser (DFB-LD), the vertical cavity surface emitting laser (VCSELS), and the selection of various lasers can require according to the difference of the distance of transmitting and other optical properties and be selected.
Fig. 4 c is the optical schematic diagram of laser tube core 302 of the present invention when working, because laser tube core 302 is positioned over the front end of Die carrier 304 and is 3 to 25 degree angles with the vertical direction of center line, return reverberation and laser tube core 302 smooth exit directions are angled, can not enter the resonant cavity of laser, thereby can not influence the operate as normal of laser resonant cavity, 10 pairs of return catoptrical sensitiveness of light source have promptly been stopped from the source, make light source of the present invention possess the superior function that other light sources does not have, use the light emitting devices of this light source also not need again the special device of extra outfit as short lock pin, transition rings isolator even stops reverberation retroeflection light source to influence the operate as normal of laser, do not need the coupling adjustment work of the complexity between the lengthy and tedious device, time saving and energy saving cost-saving yet.
Simultaneously, experimental result shows: light emitting devices of the present invention is in the auxiliary accurate expensive device of not using other such as pottery is lacked lock pin and the metal transfer ring comes under the situation of antagonistic reflex light, reduce cost more than 10%, make technological process shorten 5 steps, reduce the welding times of half.And it is also not a halfpenny the worse on the performance, can reach coupled power minimum-11dbm equally, maximum+1dbm, the eye pattern under 155Mb/S speed is suitable substantially with the traditional approach that adopts short lock pin, and the eye opening under 1.25Gb/S satisfies the requirement of TIU-TG.983 fully.If the future communications system is to the performance requirement of light emitting devices when higher, light emitting devices of the present invention only need further comprise a short lock pin and a transition rings, short lock pin is positioned in the sleeve pipe and its close light source one end is the inclined plane, excessively the ring electric welding is positioned between light source and the metal sleeve, to regulate the distance of short lock pin and light source.Just can further be upgraded, and traditional devices is difficult to so easily realize.
Obviously, only described better embodiment of the present invention above, in dependent claims and their equivalent technologies, in basic thought of the present invention, more revised, change and change equally and can realize.Thereby the present invention and embodiment thereof are not limited to above-mentioned execution mode, but can change within the scope of the claims.
Claims (19)
1, a light source comprises that a laser tube core, a laser carrier, a back light detector, a back light detector carrier are closed in by in a base and the closed confined space that forms of a pipe cap, this laser tube core is positioned this laser carrier, this back light detector is positioned this back light detector carrier, it is characterized in that: this laser tube core intersects 3 to 25 degree angles towards the vertical direction of the central axis of the end face of pipe cap and light source.
2, light source as claimed in claim 1 is characterized in that the laser tube core optimal setting positions is the downward translation certain distance of benchmark with the center line when keeping angle.
3, light source as claimed in claim 2, the distance that it is characterized in that this translation are 1 to 50um.
4, light source as claimed in claim 1 is characterized in that this laser tube core is the semiconductor laser.
5, light source as claimed in claim 1 is characterized in that this back light detector carrier further comprises a plurality of metal pins and this back light detector and laser tube core electrical interconnects.
6, a light emitting devices is characterized in that comprising that a light source and a sleeve pipe are immobilizated in the both sides of a light source base respectively, this light source comprises that a laser tube core, a laser carrier, a back light detector, a back light detector carrier are closed in by in a base and the closed confined space that forms of a pipe cap, this laser tube core is positioned this laser carrier, this back light detector is positioned this back light detector carrier, and this laser tube core intersects 3 to 25 degree angles towards the vertical direction of the central axis of the end face of pipe cap and light source.
7, light source as claimed in claim 6 is characterized in that the laser tube core optimal setting positions is the downward translation certain distance of benchmark with the center line when keeping angle.
8, light source as claimed in claim 6, the distance that it is characterized in that this translation are 1 to 50um.
9, light emitting devices as claimed in claim 6 is characterized in that laser tube core is the semiconductor laser.
10, light emitting devices as claimed in claim 6 is characterized in that this light source, sleeve pipe and this light source fix by the spot welding interconnection technique.
11, light emitting devices as claimed in claim 6 is characterized in that further comprising that a transition rings spot welding is connected and fixed between this sleeve pipe and this light source base.
12, light emitting devices as claimed in claim 11 is characterized in that further comprising that the short lock pin of a pottery is positioned in this sleeve pipe and closes on this transition rings.
13, light emitting devices as claimed in claim 12 is characterized in that the short lock pin of this pottery is an inclined plane near this transition rings one end.
14, light emitting devices as claimed in claim 6 is characterized in that this sleeve pipe is the metal sleeve pipe of remaining silent.
15, a kind of manufacture method of light emitting devices comprises step: a back light detector carrier is fixed in a base; One laser tube core is fixed in a Die carrier and makes the light output end of tube core become 3 to 25 degree angles with the vertical line of the center line of carrier; Die carrier is fixed in base; With base and a pipe cap welding so that this tube core and detector sealing are made light source; Light source is fixed in a metal base, a metal sleeve is fixed in the opposite side of metal base; Fine setting forms light emitting devices.
16, the manufacture method of light emitting devices as claimed in claim 15 is characterized in that back light detector is the bottom center that is adhered to base therebetween, and laser tube core is to be adhered to Die carrier.
17, the manufacture method of light emitting devices as claimed in claim 16 is characterized in that this Die carrier is adhered to base to protuberance side front end that pipe cap stretches out.
18, the manufacture method of light emitting devices as claimed in claim 17 is characterized in that this light source, metal base and metal sleeve all are that laser spot welding is fixed.
19, the manufacture method of light emitting devices as claimed in claim 15 is characterized in that tube core is certain 1 to 50um the distance of the downward translation of benchmark with the center line when keeping angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510101124XA CN100547865C (en) | 2005-11-03 | 2005-11-03 | Light source, light emitting devices and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510101124XA CN100547865C (en) | 2005-11-03 | 2005-11-03 | Light source, light emitting devices and method thereof |
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| Publication Number | Publication Date |
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| CN1960089A true CN1960089A (en) | 2007-05-09 |
| CN100547865C CN100547865C (en) | 2009-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200510101124XA Active CN100547865C (en) | 2005-11-03 | 2005-11-03 | Light source, light emitting devices and method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700181A (en) * | 2013-12-12 | 2014-04-02 | 中国科学院长春光学精密机械与物理研究所 | Vertical-cavity surface-emitting semiconductor laser-based fluorescent anti-counterfeiting label inspection device |
| CN108390252A (en) * | 2017-02-03 | 2018-08-10 | 山东华光光电子股份有限公司 | A kind of quick autoregistration optical fiber for reforming method of semiconductor laser |
| CN110045463A (en) * | 2018-01-15 | 2019-07-23 | 中国科学院上海光学精密机械研究所 | A kind of connector and method of fused fiber splice |
| CN110783810A (en) * | 2019-10-23 | 2020-02-11 | 武汉东飞凌科技有限公司 | Method for positioning coaxiality of sealing caps of coaxially packaged edge-emitting laser |
| CN111884039A (en) * | 2020-08-26 | 2020-11-03 | 广东瑞谷光网通信股份有限公司 | Novel light emitting laser, light emitting assembly and assembling method thereof |
| CN112526682A (en) * | 2020-12-15 | 2021-03-19 | 四川光恒通信技术有限公司 | Microminiaturized novel single-fiber unidirectional light emitting device and packaging method thereof |
-
2005
- 2005-11-03 CN CNB200510101124XA patent/CN100547865C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700181A (en) * | 2013-12-12 | 2014-04-02 | 中国科学院长春光学精密机械与物理研究所 | Vertical-cavity surface-emitting semiconductor laser-based fluorescent anti-counterfeiting label inspection device |
| CN108390252A (en) * | 2017-02-03 | 2018-08-10 | 山东华光光电子股份有限公司 | A kind of quick autoregistration optical fiber for reforming method of semiconductor laser |
| CN108390252B (en) * | 2017-02-03 | 2020-06-09 | 山东华光光电子股份有限公司 | Rapid self-aligning optical fiber shaping method for semiconductor laser |
| CN110045463A (en) * | 2018-01-15 | 2019-07-23 | 中国科学院上海光学精密机械研究所 | A kind of connector and method of fused fiber splice |
| CN110783810A (en) * | 2019-10-23 | 2020-02-11 | 武汉东飞凌科技有限公司 | Method for positioning coaxiality of sealing caps of coaxially packaged edge-emitting laser |
| CN111884039A (en) * | 2020-08-26 | 2020-11-03 | 广东瑞谷光网通信股份有限公司 | Novel light emitting laser, light emitting assembly and assembling method thereof |
| CN111884039B (en) * | 2020-08-26 | 2021-10-29 | 广东瑞谷光网通信股份有限公司 | Light emitting laser, light emitting assembly and assembling method thereof |
| CN112526682A (en) * | 2020-12-15 | 2021-03-19 | 四川光恒通信技术有限公司 | Microminiaturized novel single-fiber unidirectional light emitting device and packaging method thereof |
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| Publication number | Publication date |
|---|---|
| CN100547865C (en) | 2009-10-07 |
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