CN207069289U - Multi-wavelength based on PLC integrates adjustable laser device assembly - Google Patents
Multi-wavelength based on PLC integrates adjustable laser device assembly Download PDFInfo
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- CN207069289U CN207069289U CN201720716357.9U CN201720716357U CN207069289U CN 207069289 U CN207069289 U CN 207069289U CN 201720716357 U CN201720716357 U CN 201720716357U CN 207069289 U CN207069289 U CN 207069289U
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Abstract
It the utility model is related to coherent light communication technical field, specifically disclose a kind of multi-wavelength based on PLC and integrate adjustable laser device assembly, it include a PLC chip, it is integrally disposed in multiple DFB chips at PLC chip edge, located at PLC chip side and the multiple lens corresponding with DFB chips, photodiode array, and array waveguide grating；The waveguide light path for guiding laser beam is etched with the PLC chip, laser beam is coupled in PLC chip through total reflection lens, the output beam of each DFB chips is divided into two-way by the light path in PLC chip, the optical interference circuit imported all the way in PLC chip, output light after interference is transmitted to photodiode array and is converted to current signal, and another way imports array waveguide grating, by the transmission and interference of different distance, light beam is coupled into again in output end, is exported and is used to module.The utility model can be exported with multi-wavelength multiplex, so as to increase exponentially transmission capacity.
Description
Technical field
It the utility model is related to coherent light communication technical field, more particularly to a kind of tunable laser device assembly.
Background technology
With the rapidly increase of network information, to the bandwidth demand more and more higher of network, the net needed for big data transmission
Network bandwidth is increasingly becoming bottleneck.The main flow Single wavelength transmission rate of optical fiber backbone network dwdm system is 100Gbps at present, future
Several years Single wavelength transmission rates can be stepped up 200Gbps, 400Gbps even 1Tbps.
In high speed DWDM communication systems, high performance tunable laser plays important role, relevant logical at a high speed
Letter system proposes broad tuning scope, high frequency stability, narrow linewidth, high-power, low-power consumption, small size to tunable laser
Etc. characteristic index requirement.Consider from channel angle, it is an approach for solving network bandwidth to improve Single wavelength transmission rate.From being
From the point of view of system, more wavelength are integrated in the handling capacity that unit equipment can be improved in smaller device, can be improved
The overall transmission capacity of system.But current adjustable transport module is typically only capable to export a wavelength simultaneously, it is therefore necessary to
Study it is a kind of can with multi-wavelength and meanwhile output transport module, to realize significantly improving for transmission capacity.
Utility model content
The purpose of this utility model is, proposes that a kind of multi-wavelength based on PLC integrates adjustable laser device assembly, and it can be with
Multi-wavelength exports simultaneously, so as to increase exponentially transmission capacity.
To achieve the above object, the utility model provides a kind of multi-wavelength based on PLC and integrates adjustable laser device assembly,
It includes：One PLC chip, it is integrally disposed in multiple DFB chips at PLC chip edge, located at PLC chip side and with DFB cores
The corresponding multiple lens of piece, photodiode array, and array waveguide grating；It is etched with being used to pass in the PLC chip
Lead the light path of laser beam, laser beam is through in Lens Coupling to PLC chip, and light path in PLC chip is by each DFB chips
Output beam is divided into two-way, and the optical interference circuit imported all the way in PLC chip, the output light after interference is transmitted to photodiode battle array
Row are converted to current signal, and another way imports array waveguide grating, by the transmission and interference of different distance, in output end coupling again
Light beam is synthesized, exports and is used to module.
Preferably, the multiple DFB flip-chips are bonded in the edge of PLC chip.
In the utility model, the wire adding thermal resistance by current control temperature is equipped with every DFB chips.
Wherein, the lens are total reflection lens, and multiple lens, which are pasted, is arranged at PLC chip side.
Multi-wavelength of the utility model based on PLC integrates adjustable laser device assembly, and it is by multiple DFB integrated chips to PLC
On chip, the highly integrated of the functions such as frequency modulation, frequency locking and power monitoring is realized using the design of PLC chip；Simultaneously as use
Flip chip bonding process and PLC chip, realize above-mentioned function commonly required discrete optics for example lens, etalon,
All a large amount of reduce such as optical splitter, wave multiplexer even no longer need, such so as to which the integrated level of laser assembly greatly improved
Component can make transport module multi-wavelength while export, and realize significantly improving for transmission capacity.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is that multi-wavelength of the utility model based on PLC integrates a kind of structure of specific embodiment of adjustable laser device assembly
Schematic diagram；
Fig. 2 is the schematic cross-section that DFB chips couple with PLC chip in the utility model；
Fig. 3 is a kind of structural representation of specific embodiment of DFB chips in the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
As shown in figure 1, the utility model, which provides a kind of multi-wavelength based on PLC, integrates adjustable laser device assembly, it includes：
One slab guide (PLC：Planar Lightwave Circuit) it is chip 10, integrally disposed in the multiple of the edge of PLC chip 10
Distributed feedback laser (DFB：Distributed Feedback Laser) chip 20, located at the side of PLC chip 10 and with
The corresponding multiple lens 30 of DFB chips 20, photodiode array 40, and array waveguide grating (AWG:Arrayed
Waveguide Grating)50；The waveguide light path for guiding laser beam, laser beam are etched with the PLC chip 10
It is coupled to through lens 30 in PLC chip 10, the output beam of each DFB chips 20 is divided into by the waveguide light path in PLC chip 10
Two-way, the optical interference circuit imported all the way in PLC chip 10, the output light after interference are transmitted to photodiode array 40 and are converted to
Current signal, another way import array waveguide grating 50, by the transmission and interference of different distance, are coupled into again in output end 60
Light beam, export and used to module.Transport module of the prior art is typically only capable to export a wavelength simultaneously, and integreted phontonics
Technology can realize multiple wavelength while export, therefore the utility model is carrying platform using PLC chip 10, is integrated with multiple
DFB chips 20, the highly integrated of the functions such as frequency modulation, frequency locking and power monitoring is realized using the design of waveguide chip, improves list
The output capacity of individual component.
As shown in Fig. 2 as a kind of preferred embodiment of the present utility model, the multiple back bonding of DFB chips 20 exists
The edge of PLC chip 10, the flip chip bonding process of the DFB chips 20 so that light beam imports waveguide in vertical direction, saves group
The planar dimension of part.Simultaneously because the use of PLC chip 10 and flip chip bonding process, traditional realizes the utility model function institute
All a large amount of reduce even no longer needs the discrete optics needed such as lens, etalon, optical splitter, wave multiplexer, so as to
The integrated level of laser assembly greatly improved, reduce the volume and cost of component.
As shown in figure 3, as a kind of alternative embodiment of the present utility model, it is all provided with every DFB chips 20
There is the wire adding thermal resistance 22 by current control temperature, can be with independent temperature adjustment, so that separately adjustable each chip is defeated
Go out wavelength, avoid hot cross-interference issue existing for array DFB chips.
In the utility model specific embodiment, the lens 30 are total reflection lens, and multiple total reflection lens 30 are pasted
It is arranged on the one side of PLC chip 10, laser beam is coupled to by the total reflection lens 30 of 20 corresponding setting of DFB chips
The inside of PLC chip 10.
Specifically, the output beam of each DFB chips 20 is divided into by the waveguide light path in PLC chip 10 of the present utility model
Two-way, the optical interference circuit imported all the way in PLC chip 10, another way import array waveguide grating 50.Because the generation of interference needs
Same light source is wanted to be produced by different transmission ranges, therefore optical interference circuit of the present utility model is first to divide light beam one to be
Two, a transmission range grows one apart from short.Furthermore interference is needed two-beam multiplex, therefore the foregoing light beam being divided into two
It is combined into one again after the transmission of different length.Output light after interference is transmitted to photodiode array 40 and is converted to electric current
Signal.The different wave length light beam that each DFB chips 20 export is input to array waveguide grating 50, the transmission by different distance and
Interference, light beam is coupled into output end 60 again, is exported and is used to module.Because the light transmission speed of different frequency is different, when
When laser frequency changes, the relative change of two-way light energy, can also realize the monitoring to frequency after being interfered by detection.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (4)
1. a kind of multi-wavelength based on PLC integrates adjustable laser device assembly, it is characterised in that including a PLC chip, integrally disposed
Multiple DFB chips in PLC chip edge, located at PLC chip side and the multiple lens corresponding with DFB chips, photoelectricity two
Pole pipe array, and array waveguide grating；The light path for guiding laser beam, laser beam are etched with the PLC chip
Through in Lens Coupling to PLC chip, the output beam of each DFB chips is divided into two-way by the light path in PLC chip.
2. the multi-wavelength based on PLC integrates adjustable laser device assembly as claimed in claim 1, it is characterised in that the multiple
DFB flip-chips are bonded in the edge of PLC chip.
3. the multi-wavelength based on PLC integrates adjustable laser device assembly as claimed in claim 2, it is characterised in that described each
The wire adding thermal resistance by current control temperature is equipped with DFB chips.
4. the multi-wavelength based on PLC integrates adjustable laser device assembly as claimed in claim 1, it is characterised in that the lens
For total reflection lens, multiple lens, which are pasted, is arranged at PLC chip side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720716357.9U CN207069289U (en) | 2017-06-20 | 2017-06-20 | Multi-wavelength based on PLC integrates adjustable laser device assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720716357.9U CN207069289U (en) | 2017-06-20 | 2017-06-20 | Multi-wavelength based on PLC integrates adjustable laser device assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207069289U true CN207069289U (en) | 2018-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720716357.9U Active CN207069289U (en) | 2017-06-20 | 2017-06-20 | Multi-wavelength based on PLC integrates adjustable laser device assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207069289U (en) |
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2017
- 2017-06-20 CN CN201720716357.9U patent/CN207069289U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240326 Address after: Room 601 and 701, North Block, Yuanxing Technology Building, No.1 Songpingshan Road, High tech Industrial Park (North District), Nanshan District, Shenzhen, Guangdong Province, 518057 Patentee after: Longmet Communication Technology (Shenzhen) Co.,Ltd. Country or region after: China Address before: 518057 xinfeitong optoelectronic building, No.8, Keji South 12 road, Nanshan District, Shenzhen City, Guangdong Province Patentee before: NEOPHOTONICS Corp. Country or region before: China |