CN104155826A - Digitized programmable all-optical differentiator - Google Patents
Digitized programmable all-optical differentiator Download PDFInfo
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- CN104155826A CN104155826A CN201410403454.3A CN201410403454A CN104155826A CN 104155826 A CN104155826 A CN 104155826A CN 201410403454 A CN201410403454 A CN 201410403454A CN 104155826 A CN104155826 A CN 104155826A
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- thermal printer
- printer head
- optical fiber
- heating
- full light
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Abstract
The invention discloses a digitized programmable all-optical differentiator which comprises an optical fiber, a program-controlled hot printing head, a heat sink, an upper computer and a lower computer. A linear chirp Bragg fiber grating is carved on the optical fiber. The program-controlled hot printing head is attached to the optical fiber and is provided with a programmable heating array, and the programmable heating array is composed of a plurality of dense heating points. The heat sink is attached to the optical fiber and the program-controlled hot printing head. The upper computer is used for acquiring control parameter input by a user and generating a corresponding control instruction based on the control parameters. The lower computer is connected with the upper computer and the program-controlled hot printing head and used for acquiring the control instruction and controlling the heating temperature and heating time of each heating point on the programmable heating array based on the control instruction.
Description
Technical field
The present invention relates to optical technical field, relate in particular to a kind of full light differentiator of Digital Programmable.
Background technology
Have about the method for full light differentiator that realizes low order or high-order a variety of, as utilize nonlinear effect, your interferometer (MZM) of Mach Zehnder of semiconductor optical amplifier (SOA) transition function, utilize and inscribe the special bragg grating (FBG) of cutting toe, Phase-shifted long-period fibre grating (LPG), silicon-based micro ring resonator, programmable filter based on liquid crystal technology etc.
In current technology, can realize the function of higher differentiation device by multiple silicon-based micro ring resonators (low order differentiator) cascade, or use multiple long period fiber grating (low order differentiator) to realize the function of higher differentiation device.
But, realize in the differential method of full light signal at these, the defect existing be to have no idea well the to realize tunability of wavelength and bandwidth, in Scientific Articles about full light differentiator, general use based on silicon-based micro ring or special method of cutting toe fiber grating is merely able to realize fixed wave length and the fixing full light differentiator of processing bandwidth, and way does not well realize tunability.Although and the method that adopts liquid crystal programmable filter to realize differentiator can realize the tunability of differentiator wavelength and bandwidth, its insertion loss is larger, and is unfavorable for using in the full light signal processing of reality, generation and optical fiber telecommunications system.
In sum, current full light differentiator exists and cannot change neatly the processing wavelength of differentiator and process bandwidth, or the larger technical matters of insertion loss.
Summary of the invention
The present invention, by a kind of full light differentiator of Digital Programmable is provided, has solved full light differentiator in prior art, and existence cannot change to be processed wavelength and processes bandwidth, or the larger technical matters of insertion loss.
The invention provides the full light differentiator of a kind of Digital Programmable, comprising:
Optical fiber, inscribes and has linear chirped fiber Bragg gratings on described optical fiber;
Program control thermal printer head, with described optical fiber laminating, is provided with heating electrodes able to programme on described program control thermal printer head, and described heating electrodes able to programme is made up of multiple intensive hot spots;
Heat sink, with described optical fiber and described program control thermal printer head laminating;
Host computer, for obtaining the control parameter of user's input, and generates corresponding steering order based on described control parameter;
Slave computer, is connected with described host computer and described program control thermal printer head, for obtaining described steering order, and heating-up temperature and the heat time of each hot spot based on heating electrodes able to programme described in described steering order control.
Preferably, described linear chrip bragg grating, described heating electrodes able to programme and described heat sink three fit tightly.
Preferably, described slave computer, comprising:
Drive and Control Circuit module, is connected with described program control thermal printer head;
Data communication module, is connected with described host computer and described Drive and Control Circuit module;
Wherein, described data communication module is for receiving the described steering order that described host computer is sent, and described steering order is sent to described Drive and Control Circuit module, described Drive and Control Circuit module, for based on described steering order, is controlled heating-up temperature and the heat time of the each hot spot on described heating electrodes able to programme.
Preferably, described Drive and Control Circuit module, also for:
Obtain the work state information of described program control thermal printer head, and by described data communication module, described work state information is sent to described host computer.
Preferably, described slave computer, also comprises:
Power module, is connected with described program control thermal printer head, described Drive and Control Circuit module and described data communication module, for powering to described program control thermal printer head, described Drive and Control Circuit module and described data communication module.
The full light differentiator of Digital Programmable provided by the invention does not need multi-stage cascade, process wavelength and process band wide tunable, adopt the program control printhead of full-digital control circuit control to drive heating electrodes able to programme, realizing programmable temperature field distributes, the accurately ad-hoc location of heating optical fiber grating, realizes specific exponent number (as the second order) transition function of light differentiator entirely; Control the deployed position that temperature field distributes, can control the processing wavelength of full light differentiator; Accurately control the distribution in temperature field, the 3dB that can control full light differentiator processes bandwidth.The full light differentiator of Digital Programmable provided by the invention, the technology of comparing in the past, has the following advantages or technique effect:
1, the technology of the full light differentiator of Digital Programmable based on heating electrodes able to programme and linear chrip bragg grating has been proposed first.
2, have the program control feature of total digitalization, can directly be controlled neatly the processing wavelength of differentiator and be processed bandwidth by host computer, solved full light differentiator in prior art, existence cannot reach and change neatly the technical matters of processing wavelength and processing bandwidth.
3, owing to not adopting the method for multi-stage cascade, there is no the loss bringing that intercouples of silica-based and optical fiber yet, there is the advantage that insertion loss is less, solve full light differentiator in prior art, there is the technical matters that insertion loss is larger.
Brief description of the drawings
Fig. 1 is the structural drawing of the full light differentiator of Digital Programmable in the embodiment of the present invention.
Embodiment
The embodiment of the present invention, by a kind of full light differentiator of Digital Programmable is provided, has solved full light differentiator of the prior art, and existence cannot change to be processed wavelength and processes bandwidth, or the larger technical matters of insertion loss.
The technical scheme of the embodiment of the present invention is for solving the problems of the technologies described above, and general thought is as follows:
The full light differentiator of a kind of Digital Programmable, comprising: optical fiber, and on described optical fiber, inscribe and have linear chirped fiber Bragg gratings; Program control thermal printer head, with described optical fiber laminating, is provided with heating electrodes able to programme on described program control thermal printer head, and described heating electrodes able to programme is made up of multiple intensive hot spots; Heat sink, with described optical fiber and described program control thermal printer head laminating; Host computer, for obtaining the control parameter of user's input, and generates corresponding steering order based on described control parameter; Slave computer, is connected with described host computer and described program control thermal printer head, for obtaining described steering order, and heating-up temperature and the heat time of each hot spot based on heating electrodes able to programme described in described steering order control.
In order better to understand technique scheme, below in conjunction with Figure of description and concrete embodiment, technique scheme is described in detail.
As shown in Figure 1, the present embodiment provides a kind of Digital Programmable full light differentiator, comprising:
Optical fiber 110, inscribes and has linear chirped fiber Bragg gratings 111 on optical fiber 110;
Program control thermal printer head 120, fits with optical fiber 110, is provided with heating electrodes 121 able to programme on program control thermal printer head 120, and heating electrodes 121 able to programme is made up of multiple intensive hot spots;
Heat sink 130, fit with optical fiber 110 and program control thermal printer head 120;
Host computer 300, for obtaining the control parameter of user's input, and generates corresponding steering order based on described control parameter;
Slave computer 200, is connected with host computer 300 and program control thermal printer head 120, for obtaining described steering order, and heating-up temperature and the heat time of each hot spot based on described steering order control heating electrodes 121 able to programme.
In specific implementation process, program control thermal printer head 120 can be connected by soft arranging wire with slave computer 200; Pending signal is from one end input of optical fiber 110, and the other end from optical fiber 110 after being disposed is exported.
In specific implementation process, host computer 300 is for controlling and monitor the duty of program control thermal printer head 120, operating personnel (that is: user) can be by the required control parameter of key-press input on host computer 300, program control thermal printer head 120 is controlled, thereby the light signal in optical fiber 110 is processed.Wherein, described control parameter comprises: width of the position of communication port parameter, communication baud rate, two or more heating regions, the heat time of hot spot and cool time (for regulating heating-up temperature), heating region etc.
In specific implementation process, process wavelength and process bandwidth and need to carry out the configuration of different design parameters according to different fiber gratings, in the chirp rate of fiber grating, the index modulation degree of depth of fiber grating, heating electrodes able to programme 121, space density, the temperature etc. of hot spot all can impact it.Therefore, selecting the fiber grating of proper parameter is also one of important step realizing by full light differentiator.
In specific implementation process, the full light differentiator of described Digital Programmable, distribute by adopting heating electrodes 121 able to programme to build digital reconfigurable temperature field, utilize the thermo-optic effect of linear chrip bragg grating 111, in the transmission spectrum of linear chirped fiber Bragg gratings 111, built wavelength and process bandwidth programmable full light differentiator flexibly by inserting neatly phase in-migration.In the heating electrodes able to programme using, hot spot density is high, can accurately introduce accurate phase shift at multiple regional areas of fiber grating, builds less single channel low order or the full light differentiator of high-order of error.Due to the switching time of each hot spot in heating electrodes able to programme, heating intensity all can be by digital control, so can implement easily tuning process.
In specific implementation process, according to the optical characteristics of linear chrip bragg grating 111 and thermo-optic effect, utilize host computer 300 to change the position that temperature field is disposed, can realize the change of processing wavelength.
In specific implementation process, according to the optical characteristics of linear chrip bragg grating 111 and thermo-optic effect, utilize host computer 300 to change the accurate distribution in the temperature field on heating electrodes 121 able to programme, can realize the change of 3dB processing bandwidth.
In addition, the structure due to the full light differentiator of Digital Programmable provided by the present invention with full optical fiber forms, with existing optical fiber telecommunications system compatibility, without as the silica-based implementation that waits need to be by vertical coupled or aim at the larger insertion loss that brings of coupling.Realizing in the process of higher differentiation device, due to the structure without multi-stage cascade, more make insertion loss in the time realizing the function of the differentiator such as such as second-order differential device high-order compare other existing schemes and Yan Geng little.In addition, can also further reduce insertion loss by the optimization of the index modulation degree of depth of fiber grating and hot spot Temperature Distribution.
Further, in the present embodiment, linear chrip bragg grating 111, heating electrodes able to programme 121 and heat sink 130 threes fit tightly, can reduce by fitting tightly the adverse effect of the full light differentiator of whole Digital Programmable being brought due to thermal diffusion, and be conducive to improve heat conduction efficiency, the job stability of the full light differentiator of whole Digital Programmable is improved greatly.
Further, in the present embodiment, slave computer 200, comprising:
Drive and Control Circuit module 210, is connected with program control thermal printer head 120;
Data communication module 220, is connected with host computer 300 and Drive and Control Circuit module 210;
Wherein, the steering order that data communication module 220 is sent for receiving host computer 300, and steering order is sent to Drive and Control Circuit module 210,210 of Drive and Control Circuit moulds, for based on steering order, are controlled heating-up temperature and the heat time of the each hot spot on heating electrodes 121 able to programme.
In specific implementation process, the steering order that Drive and Control Circuit module 210 is sent based on host computer, heat time and the heating-up temperature of each hot spot on the heating electrodes able to programme 121 of control control printhead 120, realize the distribution of specified temp field, specific temperature field and linear chrip bragg grating 111 interact, thereby realize the transition function of full light differentiator.Wherein, pending light signal is from being carved with optical fiber 110 one end inputs of linear chrip bragg grating 111, through the other end output from optical fiber 110 after processing.
In specific implementation process, the data communication module 220 in slave computer 200 for example, is connected with host computer 300 by data line (: RS232-USB cable or other data cable).
In specific implementation process, Drive and Control Circuit module 210, also for: obtain the work state information of program control thermal printer head 120, and by data communication module 220, work state information sent to host computer 300, thereby the work shape of program control thermal printer head 120 is monitored.
Further, in the present embodiment, slave computer 200, also comprises:
Power module 230, is connected with program control thermal printer head 120, Drive and Control Circuit module 210 and data communication module 220, for powering to program control thermal printer head 120, Drive and Control Circuit module 210 and data communication module 220.
In specific implementation process, need to stop the processing capacity of the full light differentiator of this Digital Programmable, only need to control program control printhead 120 by host computer 300 and stop heating, make the transmission spectrum of linear chrip bragg grating 111 not meet the specific transition function of light differentiator entirely, can stop the processing capacity of full light differentiator.
The full light differentiator of Digital Programmable provided by the invention does not need multi-stage cascade, process wavelength and process the tunable full light differentiator of bandwidth, the present invention adopts the program control printhead of full-digital control circuit control to drive heating electrodes able to programme, realizing programmable temperature field distributes, the accurately ad-hoc location of heating optical fiber grating, realizes specific exponent number (as the second order) transition function of light differentiator entirely; Control the deployed position that temperature field distributes, can control the processing wavelength of full light differentiator; Accurately control the distribution in temperature field, the 3dB that can control full light differentiator processes bandwidth.The full light differentiator of Digital Programmable provided by the invention, the technology of comparing in the past, has the following advantages or technique effect:
1, the technology of the full light differentiator of Digital Programmable based on heating electrodes able to programme and linear chrip bragg grating has been proposed first.
2, have the program control feature of total digitalization, can directly be controlled neatly the processing wavelength of differentiator and be processed bandwidth by host computer, solved full light differentiator in prior art, existence cannot reach and change neatly the technical matters of processing wavelength and processing bandwidth.
3, owing to not adopting the method for multi-stage cascade, there is no the loss bringing that intercouples of silica-based and optical fiber yet, there is the advantage that insertion loss is less, solve full light differentiator in prior art, there is the technical matters that insertion loss is larger.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (5)
1. the full light differentiator of Digital Programmable, is characterized in that, comprising:
Optical fiber, inscribes and has linear chirped fiber Bragg gratings on described optical fiber;
Program control thermal printer head, with described optical fiber laminating, is provided with heating electrodes able to programme on described program control thermal printer head, and described heating electrodes able to programme is made up of multiple intensive hot spots;
Heat sink, with described optical fiber and described program control thermal printer head laminating;
Host computer, for obtaining the control parameter of user's input, and generates corresponding steering order based on described control parameter;
Slave computer, is connected with described host computer and described program control thermal printer head, for obtaining described steering order, and heating-up temperature and the heat time of each hot spot based on heating electrodes able to programme described in described steering order control.
2. the full light differentiator of Digital Programmable as claimed in claim 1, is characterized in that, described linear chrip bragg grating, described heating electrodes able to programme and described heat sink three fit tightly.
3. the full light differentiator of Digital Programmable as claimed in claim 2, is characterized in that, described slave computer, comprising:
Drive and Control Circuit module, is connected with described program control thermal printer head;
Data communication module, is connected with described host computer and described Drive and Control Circuit module;
Wherein, described data communication module is for receiving the described steering order that described host computer is sent, and described steering order is sent to described Drive and Control Circuit module, described Drive and Control Circuit module, for based on described steering order, is controlled heating-up temperature and the heat time of the each hot spot on described heating electrodes able to programme.
4. the full light differentiator of Digital Programmable as claimed in claim 3, is characterized in that, described Drive and Control Circuit module, also for:
Obtain the work state information of described program control thermal printer head, and by described data communication module, described work state information is sent to described host computer.
5. the full light differentiator of Digital Programmable as claimed in claim 4, is characterized in that, described slave computer, also comprises:
Power module, is connected with described program control thermal printer head, described Drive and Control Circuit module and described data communication module, for powering to described program control thermal printer head, described Drive and Control Circuit module and described data communication module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410403454.3A CN104155826A (en) | 2014-08-15 | 2014-08-15 | Digitized programmable all-optical differentiator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410403454.3A CN104155826A (en) | 2014-08-15 | 2014-08-15 | Digitized programmable all-optical differentiator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780691A (en) * | 2018-07-31 | 2020-02-11 | 台湾积体电路制造股份有限公司 | Control system |
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| CN102768418A (en) * | 2012-07-06 | 2012-11-07 | 华中科技大学 | Optical filter and optical filtering method based on linear chirped fiber Bragg grating |
| CN103247933A (en) * | 2013-04-18 | 2013-08-14 | 江苏金迪电子科技有限公司 | Programmable multi-wavelength adjustable optical fiber laser and multi-wavelength filtering method thereof |
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2014
- 2014-08-15 CN CN201410403454.3A patent/CN104155826A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102768418A (en) * | 2012-07-06 | 2012-11-07 | 华中科技大学 | Optical filter and optical filtering method based on linear chirped fiber Bragg grating |
| CN103247933A (en) * | 2013-04-18 | 2013-08-14 | 江苏金迪电子科技有限公司 | Programmable multi-wavelength adjustable optical fiber laser and multi-wavelength filtering method thereof |
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| HAILIANG ZHANG ET AL: "Programmable all-fiber structured waveshaper based on linearly chirped fiber Bragg grating and digital thermal controller", 《APPL. PHYS. B》 * |
| HAILIANG ZHANG ET AL: "Programmable second order photonic temporal differentiator based on digital-controlled chirped fiber Bragg grating", 《OECC / ACOFT》 * |
| HAILIANG ZHANG ET AL: "Programmable wavelength-tunable second-order optical temporal differentiator based on a linearly chirped fiber Bragg grating and a digital thermal controller", 《OPTICS LETTERS》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110780691A (en) * | 2018-07-31 | 2020-02-11 | 台湾积体电路制造股份有限公司 | Control system |
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