CN204680893U - The coaxial laser that a kind of band by built-in thermistor freezes - Google Patents
The coaxial laser that a kind of band by built-in thermistor freezes Download PDFInfo
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- CN204680893U CN204680893U CN201520390718.6U CN201520390718U CN204680893U CN 204680893 U CN204680893 U CN 204680893U CN 201520390718 U CN201520390718 U CN 201520390718U CN 204680893 U CN204680893 U CN 204680893U
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Abstract
The utility model discloses the coaxial laser of a kind of band by built-in thermistor refrigeration, comprise foot of radiator, also comprise thermoelectric refrigerating unit, thermoelectric refrigerating unit bottom surface is for heating face and fixing with foot of radiator end face, the end face of thermoelectric refrigerating unit is chill surface and fixes with the bottom surface of transition heat sink, the end face of transition heat sink is the groove surface with coaxial laser shell external shape fits, and coaxial laser shell is arranged on groove surface, and the inwall of coaxial laser shell is provided with thermistor.Thermistor and laser tube core chip are close to, by the transition heat sink that structure fits tightly, external thermal resistance in laser are reduced, at utmost reduce the target temperature error of temperature control system.Avoid and use expensive butterfly band cooling laser shell, assembly technology is simple, and temperature controlled laser Material Cost and cost of labor high degree will be with to reduce.
Description
Technical field
The utility model relates to the peripheral hardware technical field of temperature control of laser, is specifically related to the coaxial laser of a kind of band by built-in thermistor refrigeration.
Background technology
In various optical fiber transmission network, for increasing the transmission capacity of simple optical fiber, a large amount of use DWDM multiplex technique, namely in same optical fiber, carries out different wavelength to combine and transmit simultaneously.The light wave that simple optical fiber can transmit 150 multi beam different wave lengths transmits simultaneously, and every Shu Guangbo maximum speed can reach the transmission rate of 10Gb/s.Because the emission wavelength of laser is relevant with die operating temperatures, and between each laser, wavelength interval is minimum, needs to carry out precision temperature setting and control to laser, ensures that die temperature can not change along with variation of ambient temperature in the course of the work.In existing individual laser package, precision temperature control can be realized, the butterfly of only having simultaneously exported with pigtail coupling again encapsulates, the laser assembly of this packaging belt thermoelectric refrigerating unit limits application scenario because price is high again, and volume is difficult to too greatly adapt to application compact package requirement more and more widely.Fast-developing in optical fiber communication, when the demand of laser is increased increasingly, a kind of with pigtail coupling export and the miniaturization of precision temperature control can be realized, active demand that the laser of low-cost package is the sector.
Utility model content
The purpose of this utility model is to avoid weak point of the prior art and provides that a kind of volume is little, cost is low and can meet the coaxial laser that the stable built-in thermistor of high speed optical communication to light emission component optical wavelength realizes precision temperature control.Use outside electrothermal refrigeration device to carry out temperature control, the butterfly encapsulated laser of power more inner integrated electric refrigeration heat device is larger, can realize wider temperature regulating range.Adopt and arrange thermistor in shell inside, outside installation semiconductor cooler controls the temperature of coaxial laser, makes it coordinate fixing, reach the temperature control energy close to butterfly laser by low cost fixed support.
The purpose of this utility model is realized by following technical measures:
The coaxial laser that a kind of band by built-in thermistor freezes, comprise foot of radiator, also comprise thermoelectric refrigerating unit, thermoelectric refrigerating unit bottom surface is for heating face and fixing with foot of radiator end face, the end face of thermoelectric refrigerating unit is chill surface and fixes with the bottom surface of transition heat sink, the end face of transition heat sink is the groove surface with coaxial laser shell external shape fits, and coaxial laser shell is arranged on groove surface, and the inwall of coaxial laser shell is provided with thermistor.
Transition heat sink as above is tungsten copper material.
Coaxial laser shell as above is gold-plated iron pipe shell.
The chill surface of thermoelectric refrigerating unit as above is bonding with the underrun heat conductive silica gel of transition heat sink; The face that heats of thermoelectric refrigerating unit is bonding by heat conductive silica gel with the end face of foot of radiator.
the beneficial effects of the utility model are:
Due to the thermostatic control adopting the laser shell of coaxial packaging to realize laser tube core, thermistor and laser tube core chip are close to, by the transition heat sink that structure fits tightly, external thermal resistance in laser is reduced, at utmost reduce the target temperature error of temperature control system.In addition, due to the integration packaging refrigerator using external refrigeration device to instead of butterfly laser shell inside, add the power bracket of refrigerator, the laser tube core temperature control system of the larger temperature difference can be realized, make the Acclimation temperature scope of this laser wider.This system obviates and use expensive butterfly band cooling laser shell, assembly technology is simple, and temperature controlled laser Material Cost and cost of labor high degree will be with to reduce.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in accompanying drawing is not formed any restriction of the present utility model.
Fig. 1 is structural representation of the present utility model.
Wherein: 1-laser diode; 2-thermistor; 3-transition heat sink; 4-thermoelectric refrigerating unit; 5-foot of radiator; 6-coaxial laser shell.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail.
The coaxial laser that a kind of band by built-in thermistor freezes, comprise foot of radiator 5, also comprise thermoelectric refrigerating unit 4, thermoelectric refrigerating unit 4 bottom surface is for heating face and fixing with foot of radiator 5 end face, the end face of thermoelectric refrigerating unit 4 is chill surface and fixes with the bottom surface of transition heat sink 3, the end face of transition heat sink 3 is the groove surface with coaxial laser shell 6 external shape fits, and coaxial laser shell 6 is arranged on groove surface, and the inwall of coaxial laser shell 6 is provided with thermistor 2.
Preferably, transition heat sink 3 is tungsten copper material.
Preferably, coaxial laser shell 6 is gold-plated iron pipe shell.
Preferably, the chill surface of thermoelectric refrigerating unit 4 and the underrun heat conductive silica gel of transition heat sink 3 bonding; The face that heats of thermoelectric refrigerating unit 4 is bonding by heat conductive silica gel with the end face of foot of radiator 5.
Thermistor 2 is welded in from coaxial laser shell 6 internal edge close to laser diode 1, and coaxial laser shell 6 material is the good gold-plated iron pipe shell of heat conductivility, as far as possible little to ensure the temperature difference of thermistor 2 and laser diode 1.The close-fitting transition heat sink 3 of coaxial laser shell 6 outer setting for reducing between coaxial laser shell 6 and thermoelectric refrigerating unit 4 thermal resistance.Chill surface and the transition heat sink 3 of thermoelectric refrigerating unit 4 closely cooperate, heat conductive silica gel is used to carry out bonding, for regulating the temperature of coaxial laser shell 6, hot junction and the foot of radiator 5 of thermoelectric refrigerating unit 4 closely cooperate, the heat of whole assembly leaves mainly through foot of radiator 5, small part heat is left by coaxial laser shell 6, this structure from laser diode 1 to foot of radiator 5 thermal resistance minimum, to guarantee that the temperature of laser diode 1 controls to control fast.Again because electrothermal refrigeration device 4 is positioned at coaxial laser shell 6 outside, relative to integrated electric refrigeration heat device, power is unrestricted, and the temperature that can realize more wide region controls.
The utility model concentric zones cooling laser assembly adopts standard TO encapsulation, significantly reduces laser assembly volume, reduces device cost, introduces parasitic parameter little.Meanwhile, thermistor is built in the inner and laser diode chip of shell and is close to, can the temperature of effective detection laser diode chip for backlight unit, and pass through thermoelectric refrigerating unit, the heat that the laser assembly inside that in time, efficiently leaves is a large amount of, stable laser die temperature.Whole shell raw material and packaging technology cost extremely low, and volume be less than conventional belt refrigeration butterfly laser, high speed DWDM system and the equipment higher to dimensional requirement can be widely used in.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model but not restriction to the utility model protection range; although be explained in detail the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.
Claims (4)
1. the coaxial laser that freezes of the band by built-in thermistor, comprise foot of radiator (5), it is characterized in that, also comprise thermoelectric refrigerating unit (4), thermoelectric refrigerating unit (4) bottom surface is for heating face and fixing with foot of radiator (5) end face, the end face of thermoelectric refrigerating unit (4) is chill surface and fixes with the bottom surface of transition heat sink (3), the end face of transition heat sink (3) is the groove surface with coaxial laser shell (6) external shape fits, coaxial laser shell (6) is arranged on groove surface, the inwall of coaxial laser shell (6) is provided with thermistor (2).
2. the coaxial laser that freezes of a kind of band by built-in thermistor according to claim 1, it is characterized in that, described transition heat sink (3) is tungsten copper material.
3. the coaxial laser that freezes of a kind of band by built-in thermistor according to claim 1, it is characterized in that, described coaxial laser shell (6) is gold-plated iron pipe shell.
4. the coaxial laser that freezes of a kind of band by built-in thermistor according to claim 1, it is characterized in that, the chill surface of described thermoelectric refrigerating unit (4) is bonding with the underrun heat conductive silica gel of transition heat sink (3); The face that heats of thermoelectric refrigerating unit (4) is bonding by heat conductive silica gel with the end face of foot of radiator (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520390718.6U CN204680893U (en) | 2015-06-08 | 2015-06-08 | The coaxial laser that a kind of band by built-in thermistor freezes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520390718.6U CN204680893U (en) | 2015-06-08 | 2015-06-08 | The coaxial laser that a kind of band by built-in thermistor freezes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204680893U true CN204680893U (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520390718.6U Active CN204680893U (en) | 2015-06-08 | 2015-06-08 | The coaxial laser that a kind of band by built-in thermistor freezes |
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| CN (1) | CN204680893U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123935A (en) * | 2016-06-16 | 2016-11-16 | 上海电机学院 | Small-sized low temperature oven |
| CN111644749A (en) * | 2020-05-19 | 2020-09-11 | 黎功成 | Energy-saving and environment-friendly gas laser tube for laser marking machine |
-
2015
- 2015-06-08 CN CN201520390718.6U patent/CN204680893U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123935A (en) * | 2016-06-16 | 2016-11-16 | 上海电机学院 | Small-sized low temperature oven |
| CN111644749A (en) * | 2020-05-19 | 2020-09-11 | 黎功成 | Energy-saving and environment-friendly gas laser tube for laser marking machine |
| CN111644749B (en) * | 2020-05-19 | 2022-06-21 | 深圳铭创智能装备有限公司 | Energy-saving and environment-friendly gas laser tube for laser marking machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 430000 unit 1, floor 1-5, building 3-11, phase III, optical core center, 303 Guanggu Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: WUHAN NEWFIBER PHOTOELECTRIC Co.,Ltd. Address before: 11 / F, building C3, optical valley software park, special No.1, Guanshan Avenue, Donghu Development Zone, Wuhan City, Hubei Province, 430074 Patentee before: WUHAN NEWFIBER OPTOELECTRONIC TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |