CN106125212B - Optical module - Google Patents
Optical module Download PDFInfo
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- CN106125212B CN106125212B CN201610634326.9A CN201610634326A CN106125212B CN 106125212 B CN106125212 B CN 106125212B CN 201610634326 A CN201610634326 A CN 201610634326A CN 106125212 B CN106125212 B CN 106125212B
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- optical module
- driver
- thermistor
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- 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
- G02B6/4266—Thermal aspects, temperature control or temperature monitoring
-
- 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
- G02B6/4266—Thermal aspects, temperature control or temperature monitoring
- G02B6/4268—Cooling
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
Abstract
The present invention provides a kind of optical module, comprising: the first thermoelectric cooler TEC, the first TEC driver, first laser device, the first thermistor, the 2nd TEC, the 2nd TEC driver, second laser, the second thermistor, the 3rd TEC and the 3rd TEC driver；First TEC and the 2nd TEC are separately positioned on the 3rd TEC；3rd TEC is freezed or is heated according to the control of the 3rd TEC driver；First laser device is arranged on the first TEC, first thermistor is arranged in first laser device, and the first TEC driver is connect with the first TEC, and second laser is arranged on the 2nd TEC, second thermistor is arranged on second laser, and the 2nd TEC driver is connect with the 2nd TEC.Optical module provided by the present invention greatly improves the precision of optical mode deblocking temperature, to ensure that the precision of the wavelength control of optical module.
Description
Technical field
The present invention relates to electronic technology more particularly to a kind of optical modules.
Background technique
(Wavelength Division Multiplexing, abbreviation WDM) passive optical network is multiplexed in light wave
In (Passive Optical Network, abbreviation PON) system, and optical line terminal (Optical Line Terminal, referred to as
OLT (Dense) is multiplexed using intensive light wave between optical network unit (Optical Network Unit, abbreviation ONU)
Wavelength Division Multiplexing, abbreviation DWDM) wavelength, realize multidiameter delay point-to-point transmission.Using
Wavelength interval when DWDM between adjacency channel is very narrow, therefore very high to the required precision of wavelength.Therefore, for WDM PON
Optical module in system, it is necessary to which optical module is able to maintain that the Wavelength stabilized of each channel, to avoid there is the wavelength between channel
Crosstalk.
In the prior art, keep Wavelength stabilized by increasing lock wave device in optical module, specifically, lock wave device acquisition swashs
The optical signal that light device issues, after the central wavelength of chip of laser is changed due to temperature change, lock wave device can be by wave
Long variation feeds back to MCU, in turn, the temperature of chip of laser is adjusted under the control of MCU, so that chip of laser
Wavelength is adjusted to normal range (NR).
But optical module in the prior art is not high for temperature controlled precision, leads to the wavelength control of optical module
Precision is not high, it is difficult to guarantee the wavelength interval between channel.
Summary of the invention
The present invention provides a kind of optical module, for solving not high to the wavelength control precision of optical module in the prior art ask
Topic.
Optical module provided by the present invention includes:
First thermoelectric cooler TEC, the first TEC driver, first laser device, the first thermistor, the 2nd TEC, second
TEC driver, second laser, the second thermistor, the 3rd TEC and the 3rd TEC driver；
First TEC and the 2nd TEC are separately positioned on the 3rd TEC；
3rd TEC is freezed or is heated according to the control of the 3rd TEC driver；
The first laser device is arranged on the first TEC, and first thermistor is arranged in the first laser
On device, the first TEC driver is connect with the first TEC, and the first TEC driver is according to first thermistor
Value of feedback control the first TEC refrigeration or heating；
The second laser is arranged on the 2nd TEC, and second thermistor is arranged in the second laser
On device, the 2nd TEC driver is connect with the 2nd TEC, and the 2nd TEC driver is according to second thermistor
Value of feedback control the 2nd TEC refrigeration or heating.
Optical module provided by the present invention is controlled the 3rd TEC of macro-temperature and is controlled respectively and each swashed by setting
The first TEC and the 2nd TEC of the microcosmic temperature of light device, so that the precision of optical mode deblocking temperature is greatly improved, to ensure that light
The precision of the wavelength control of module, and then ensure that the wavelength interval between channel.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the present invention or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is of the invention one
A little embodiments for those of ordinary skill in the art without any creative labor, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the function structure chart of optical module embodiment one provided by the invention；
Fig. 2 is the function structure chart of optical module embodiment two provided by the invention；
Fig. 3 is the function structure chart of optical module embodiment three provided by the invention；
Fig. 4 is the function structure chart of optical module example IV provided by the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached in the embodiment of the present invention
Figure, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Fig. 1 is the function structure chart of optical module embodiment one provided by the invention, as shown in Figure 1, the optical module includes: the
One thermoelectric cooler (Thermoelectric Cooler, abbreviation TEC) the 1, the first TEC driver 2, first laser device 3, first
Thermistor 4, the 2nd TEC5, the 2nd TEC driver 6, second laser 7, the second thermistor 8, the 3rd TEC9 and third
TEC driver 10.
First TEC1 and the 2nd TEC5 are separately positioned on the 3rd TEC9.
3rd TEC9 is freezed or is heated according to the control of the 3rd TEC driver 10.
First laser device 3 is arranged on the first TEC1, and the first thermistor 4 is arranged in first laser device 3, the first TEC
Driver 2 is connect with the first TEC1, and the first TEC driver 2 controls the first TEC1 according to the value of feedback of the first thermistor 4 and freezes
Or heating.
Second laser 7 is arranged on the 2nd TEC5, and the second thermistor 8 is arranged on second laser 7, the 2nd TEC
Driver 6 is connect with the 2nd TEC5, and the 2nd TEC driver 6 drives the 2nd TEC5 according to the value of feedback of the second thermistor 8.
Wherein, all include in first laser device 3 and second laser 7 laser diode (Laser Diode, abbreviation LD) and
Backlight diode (Photo Diode, abbreviation PD), respectively LD1, PD1, LD2 and LD2.LD is chip of laser, laser
Operating temperature is primarily referred to as the operating temperature of LD.In addition, further including laser driver (LD Driver, abbreviation in optical module
LDD), i.e., LDD1 and LDD2 corresponding with first laser device 3 and second laser 7.Automated power control is formed between LD and PD
(Auto Power Control, abbreviation APC) closed loop, for maintaining the stability of light power.
In specific work process, on the one hand, the 3rd TEC9 is freezed or made under the control of the 3rd TEC driver 10
Heat, to realize the control to the macro-temperature of laser.On the other hand, each logical for the array optical module of support multichannel
Heat caused by the corresponding laser in road is not identical, for example, when laser A works and laser B does not work, laser
Heat caused by A and laser B is different, and in this case, the temperature of laser A and laser B are also different, i.e.,
There may be difference, the operation wavelength that this species diversity may lead laser changes each local temperature of optical module, therefore,
First TEC1 and the 2nd TEC5 is set in optical module, the first TEC1 and the 2nd TEC5 is arranged on the 3rd TEC9.Firstly, the
One laser 3 is arranged on the first TEC1, and the first thermistor 4 is arranged in first laser device 3, when the temperature of first laser device 3
When degree changes, the first thermistor 4 can feed back temperature change onto the first TEC driver 2, be driven by the first TEC
Dynamic device 2 is freezed or is heated controlling the first TEC1, since first laser device 3 is arranged on the first TEC1, so passing through the
The refrigeration or heating of one TEC1, so that it may so that the temperature of first laser device 3 keeps stablizing, to realize for first laser device
The 3 accurate temperature control on microcosmic.Secondly, second laser 7 is arranged on the 2nd TEC5, the setting of the second thermistor 8 exists
On second laser 7, when the temperature of second laser 7 changes, the second thermistor 8, which can feed back temperature change, to be arrived
On 2nd TEC driver 6, the 2nd TEC5 is controlled by the 2nd TEC driver 6 and is freezed or is heated, due to second laser
Device 7 is arranged on the 2nd TEC5, therefore can be so that the temperature of second laser 7 is protected by the refrigeration or heating of the 2nd TEC5
It is fixed to keep steady, to realize that the accurate temperature for second laser 7 on low-light controls.
In the present embodiment, the microcosmic temperature of each laser is controlled by the 3rd TEC of setting control macro-temperature and respectively
The first TEC and the 2nd TEC of degree, so that the precision of optical mode deblocking temperature is greatly improved, to ensure that the wavelength of optical module
The precision of control, and then ensure that the wavelength interval between channel.
In a kind of preferred embodiment, with further reference to Fig. 1, in above-mentioned optical module further include: heat sink 11.Heat sink 11 set
It sets between the 3rd TEC9 and first laser device 3.
In another embodiment, with further reference to Fig. 1, in above-mentioned optical module further include: third thermistor 12.
3rd TEC driver 10 controls the 3rd TEC9 refrigeration or heating according to the value of feedback of third thermistor 12.
It is alternatively possible to third thermistor 12 is arranged on heat sink 11, since heat sink setting is in the 3rd TEC9 and the
Between one laser 3, therefore, heat sink 11 temperature can react the bulk temperature of laser in optical module, third temperature-sensitive electricity
Resistance 12 can acquire the macro-temperature of laser by the temperature of acquisition heat sink 11, when the macro-temperature of laser becomes
When change, temperature change can be fed back to the 3rd TEC driver 10 by third thermistor 12, so that the 3rd TEC9 is in third
Freezed or heated under the control of TEC driver 10, to maintain the stabilization of the macro-temperature of laser in optical module.
In another embodiment, the 3rd TEC driver 10 is the TEC driver with processing capacity, also, the 3rd TEC drives
Dynamic device 10 is connect with third thermistor 12, so that the 3rd TEC driver 10 directly controls the 3rd TEC.
Specifically, when the macro-temperature of optical module laser changes, temperature change can be fed back to the by third thermistor 12
Three TEC drivers 10, when the 3rd TEC driver 10 knows that the macro-temperature of laser in optical module changes, so that it may straight
The variation according to temperature is connect to control the size of the driving current of the 3rd TEC9.
Other than the 3rd TEC driver 10, the first TEC driver 2 and the 2nd TEC driver 6 are also possible to have place
The TEC driver of reason ability.
Firstly, for the first TEC driver 2, the first TEC driver 2 is connect with the first thermistor 4, works as first laser
When the temperature of device 3 changes, temperature change will be fed back to the first TEC driving by the first thermistor 4 being disposed thereon
Device 2, when the first TEC driver 2 knows that the temperature of first laser device 3 changes, so that it may directly according to the variation of temperature come
Control the size of the driving current of the first TEC1.
Secondly, the 2nd TEC driver 6 is connect with the second thermistor 8 for the 2nd TEC driver 6, work as second laser
When the temperature of device 7 changes, temperature change can be fed back to the 2nd TEC driver by the second thermistor 8 being disposed thereon
6, when the 2nd TEC driver 6 knows that the temperature of second laser 7 changes, can directly it be controlled according to the variation of temperature
The size of the driving current of 2nd TEC5.
Fig. 2 is the function structure chart of optical module embodiment two provided by the invention, as shown in Fig. 2, in above-mentioned optical module also
Including microprocessing unit (Microcontroller Unit, abbreviation MCU) 13.
3rd TEC driver 10 is connect with MCU13.
3rd TEC driver 10 controls the 3rd TEC9 by MCU13.
Optionally, MCU13 can be connect with third thermistor 12, thus according to the value of feedback of third thermistor 12 come
It generates corresponding signal and is sent to the 3rd TEC driver 10, the 3rd TEC driver 10 controls the 3rd TEC9 under the control of MCU
Driving current, to guarantee the stabilization of the macro-temperature of laser in optical module.
Other than the 3rd TEC driver 10, the first TEC driver 2 and the 2nd TEC driver 6 can also respectively with
MCU13 connection, controls the driving current of corresponding TEC under the control of MCU.Fig. 3 is optical module embodiment provided by the invention
Three function structure chart, as shown in figure 3, the first TEC driver 2 and the 2nd TEC driver 6 are connect with MCU13 respectively, meanwhile,
First thermistor 4 is connect with MCU13, and the second thermistor 8 is connect with MCU13.
When the temperature of first laser device 3 changes, the first thermistor 4 being disposed thereon will be by temperature change
MCU13 is fed back to, MCU13 sends signal to the first TEC driver 2 according to value of feedback, so that 2 basis of the first TEC driver
The signal of MCU13 controls the driving current of the first TEC1, and then realizes the temperature of first laser device 3 is controlled.
When the temperature of second laser 7 changes, the second thermistor 8 being disposed thereon will be by temperature change
MCU13 is fed back to, MCU13 sends signal to the 2nd TEC driver 6 according to value of feedback, so that 6 basis of the 2nd TEC driver
The signal of MCU13 controls the driving current of the 2nd TEC5, and then realizes the temperature of second laser 7 is controlled.
Fig. 4 is the function structure chart of optical module example IV provided by the invention, as shown in figure 4, in above-mentioned optical module also
Including the first grating region 14 and the second grating region 15.
First grating region 14 is arranged in first laser device 3, and the first grating region 14 is connect with MCU13.
Second grating region 15 is arranged on second laser 7, and the second grating region 15 is connect with MCU13.
In specific work process, feedback that MCU13 is sent respectively according to the first thermistor 4 and the second thermistor 8
Value, to control the input current of the first grating region 14 and the second grating region 15 respectively, so that the first grating region 14 and the second grating
Area 15 all can only allow specific wavelength to pass through, to be further ensured that the stabilization of the operation wavelength of each laser.
In addition, the stabilization of the operation wavelength of laser is maintained not will increase the power consumption of optical module using grating region
To guarantee the low-power consumption of optical module.
It should be noted that the first TEC driver 2, the 2nd TEC driver 6 and the 3rd TEC driver 10 in Fig. 4
It, can also be by the first TEC driver 2, the 2nd TEC driver when all being controlled by MCU, but grating region being set in optical module
6 and the 3rd TEC driver 10 be both configured to the TEC driver with processing capacity, connection relationship is referred to above-mentioned
Embodiment.
Optionally, since the size of wavelength can be determined by voltage and current, preset school can be passed through in advance
This corresponding relationship is saved in MCU by standard to form the corresponding relationship between voltage and current, in the optical module course of work
In, it, can be by between the voltage and current that pre-saves when temperature change causes the operation wavelength of laser to change
Corresponding relationship guarantee the stabilization of wavelength.
In the present embodiment, a grating region is set in each laser, when the operation wavelength of laser changes,
The characteristic of grating region can be controlled by MCU to guarantee the stabilization of the operation wavelength of laser, to further promote optical module
The precision of wavelength control.
In an alternative embodiment, the laser in above-mentioned optical module include: first laser device, second laser,
Third laser and the 4th laser.
Optionally, the first grating region 14 and the second grating region 15 can be Distributed Bragg Reflection (Distributed
Bragg Reflector, abbreviation DBR) grating region.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (8)
1. a kind of optical module characterized by comprising the first thermoelectric cooler TEC, the first TEC driver, first laser device,
First thermistor, the 2nd TEC, the 2nd TEC driver, second laser, the second thermistor, the 3rd TEC and the 3rd TEC
Driver；
First TEC and the 2nd TEC are separately positioned on the 3rd TEC；
3rd TEC is freezed or is heated according to the control of the 3rd TEC driver；
The first laser device is arranged on the first TEC, and first thermistor is arranged in the first laser device,
The first TEC driver is connect with the first TEC, and the first TEC driver is according to the anti-of first thermistor
Feedback value controls the first TEC refrigeration or heating；
The second laser is arranged on the 2nd TEC, and second thermistor is arranged on the second laser,
The 2nd TEC driver is connect with the 2nd TEC, and the 2nd TEC driver is according to the anti-of second thermistor
Feedback value controls the 2nd TEC refrigeration or heating.
2. optical module according to claim 1, which is characterized in that the optical module further include: third thermistor；
The 3rd TEC driver controls the 3rd TEC refrigeration or heating according to the value of feedback of the third thermistor.
3. optical module according to claim 2, which is characterized in that the 3rd TEC driver is with processing capacity
TEC driver；
The 3rd TEC driver is connect with the third thermistor.
4. optical module according to claim 2, which is characterized in that the optical module further include: microprocessing unit MCU；
The 3rd TEC driver is connect with the MCU；
The 3rd TEC driver controls the 3rd TEC by the MCU.
5. optical module according to claim 1-4, it is characterised in that the optical module further include: the first grating region
And second grating region；
First grating region is arranged in the first laser device, and first grating region is connect with MCU；
Second grating region is arranged on the second laser, and second grating region is connect with MCU.
6. optical module according to claim 1, which is characterized in that the optical module further include: heat sink；
The heat sink setting is between the 3rd TEC and the first laser device.
7. optical module according to claim 5, which is characterized in that described
One grating region and second grating region are the grating region Distributed Bragg Reflection DBR.
8. optical module according to claim 1, which is characterized in that the laser includes laser diode LD and photoelectricity
Diode PD forms automated power control APC closed loop between the LD and the PD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610634326.9A CN106125212B (en) | 2016-08-05 | 2016-08-05 | Optical module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610634326.9A CN106125212B (en) | 2016-08-05 | 2016-08-05 | Optical module |
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| CN106125212A CN106125212A (en) | 2016-11-16 |
| CN106125212B true CN106125212B (en) | 2019-01-01 |
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| CN201610634326.9A Active CN106125212B (en) | 2016-08-05 | 2016-08-05 | Optical module |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942449B (en) * | 2017-11-24 | 2019-11-05 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module |
| CN109188614B (en) | 2018-08-28 | 2020-02-14 | 武汉电信器件有限公司 | Double-carrier integrated optical device and photoelectric module |
| CN112054848B (en) * | 2019-06-17 | 2021-06-04 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN110542957B (en) * | 2019-09-02 | 2021-07-23 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9468085B2 (en) * | 2012-12-29 | 2016-10-11 | Zephyr Photonics Inc. | Method and apparatus for implementing optical modules in high temperatures |
| CN203661071U (en) * | 2013-12-31 | 2014-06-18 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN104717018B (en) * | 2015-03-25 | 2017-07-11 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module |
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