CN103297147A - SG-DBR (sampled grafting distributed bragg reflection) tunable laser device module and control method implemented by same - Google Patents
SG-DBR (sampled grafting distributed bragg reflection) tunable laser device module and control method implemented by same Download PDFInfo
- Publication number
- CN103297147A CN103297147A CN2013101896303A CN201310189630A CN103297147A CN 103297147 A CN103297147 A CN 103297147A CN 2013101896303 A CN2013101896303 A CN 2013101896303A CN 201310189630 A CN201310189630 A CN 201310189630A CN 103297147 A CN103297147 A CN 103297147A
- Authority
- CN
- China
- Prior art keywords
- tunable laser
- dbr tunable
- dbr
- circuit
- wavelength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses an SG-DBR (sampled grafting distributed bragg reflection) tunable laser device module and a control method implemented by the same. The SG-DBR tunable laser device module comprises an SG-DBR tunable laser device and a PCBA (printed circuit board array) circuit board; the SG-DBR tunable laser device is used for outputting waves with different wavelengths within a certain bandwidth; the PCBA circuit board is used for acquiring current and the temperature of the SG-DBR tunable laser device and regulating the current and the temperature of the SG-DBR tunable laser device according to the current and the temperature of the SG-DBR tunable laser device. The method includes linearly testing the PCBA circuit board; sampling voltage values of five first precision resistors by the aid of a single chip microcomputer; converting the voltage values into current-wavelength corresponding data of the SG-DBR tunable laser device after data processing; mounting the SG-DBR tunable laser device; then tuning and testing the wavelengths of the waves outputted by the SG-DBR laser device. The SG-DBR tunable laser device module and the control method have the advantages that the wavelengths can be automatically controlled, the control method is simple, the wavelengths and power of the SG-DBR tunable laser device module are stable, circuits of the SG-DBR tunable laser device module are simple and are easy to implement, and the wavelength tuning range is wide.
Description
Technical field
The present invention relates to the control of tunable laser module in a kind of dense wave division multipurpose (DWDM) data transmission system, refer to a kind of SG-DBR tunable laser module and control method thereof especially.
Background technology
Along with the DWDM(dense wave division multipurpose) development of technology, the number of wavelengths in the system has reached up to a hundred, for network flexibility, so just need the dynamic wavelength in the optical-fiber network to distribute, yet the utilization rate of laser with fixed wavelength is very low before, the wasting of resources, and cost height.It is worth noting along with semiconductor and development of technologies thereof, people successfully develop tunable laser, i.e. different wave length in the certain bandwidth of same laser module control output, and these wavelength value and all satisfy ITU-T(International Telecommunications Union telecommunication standards tissue at interval) requirement.
For optical-fiber network of future generation, tunable laser is to realize the key factor of ASON, can provide bigger elasticity, faster wavelength supply rate for operator, and the lower cost of final realization.Tunable laser has three kinds of control technologys from tuning principle: types such as Current Control Technology, temperature control technology and mechanical control technology.Sampling sampling sampled grating distributed bragg reflector (SG-DBR) tunable laser is to adopt Current Control, and its wavelength is that the different parts by exciting current guiding resonant cavity changes.But the precision of existing SG-DBR tunable laser control wavelength is not high and unstable.
Summary of the invention
The object of the present invention is to provide a kind of SG-DBR tunable laser module and control method thereof, it is effectively regulated and stable control the wavelength of SG-DBR tunable laser output by stable current value, the wavelength tuning range of 103 passages of SG-DBR tunable laser is all controlled at 191.15THz～196.15THz, wavelength interval in each passage is that 0.4nm(is channel spacing 50G), the wavelength error that allows through high low-temperature test for ± 6pm(be locking frequency be precision be ± 0.5G), its control method is very simple, the precision height is used convenient and reliable.
To achieve these goals, the invention provides a kind of SG-DBR tunable laser module, comprising:
SG-DBR tunable laser: be used for the different wave length in the certain bandwidth of output;
PCBA circuit board: after be used for gathering the electric current and temperature of SG-DBR tunable laser, and adjust electric current and the temperature of SG-DBR tunable laser according to described electric current and temperature.
Also comprise linear test circuit, for before the electric current of adjusting the SG-DBR tunable laser at described PCBA circuit board and the temperature described PCBA circuit board being carried out the linearity test, described linear test circuit comprises 2 precision second resistance on virtual instrument, 5 first precision resistances and the PCBA circuit board, and described virtual instrument, 5 first precision resistances, PCBA circuit board and 2 second precision resistances are electrically connected the composition closed loop circuit successively.
Described PCBA circuit board is provided with current driving circuit and single-chip microcomputer, described single-chip microcomputer, current driving circuit and SG-DBR tunable laser are electrically connected successively, after the single-chip microcomputer deal with data, by 5 current values of SPI communication protocol control current driving circuit output, reach the normal value of SG-DBR tunable laser wavelength output.
Described current driving circuit is a current drives chip.
Also be provided with automatic temperature control circuit on the described PCBA circuit board, described single-chip microcomputer, automatic temperature control circuit, SG-DBR tunable laser are electrically connected successively, and automatic temperature control circuit feeds back to the SG-DBR tunable laser after handling for the temperature of the SG-DBR tunable laser that single-chip microcomputer is collected again.
Described automatic temperature control circuit comprises difference channel, PI circuit and TEC driver, described single-chip microcomputer, difference channel, PI circuit, TEC driver and SG-DBR tunable laser closed loop are electrically connected, described single-chip microcomputer is gathered the temperature of SG-DBR tunable laser, then behind the design temperature, through passing to the TEC driver after the PI circuit variation, change the working temperature of SG-DBR tunable laser at last, reach dynamic balance.
Also be provided with wavelength, power monitoring circuit on the described PCBA circuit board, described single-chip microcomputer, wavelength, power monitoring circuit, SG-DBR tunable laser are electrically connected successively, wavelength, power monitoring circuit are used for gathering the magnitude of voltage of 2 second precision resistances on the PCBA circuit board, after the single-chip microcomputer computing, the output of fine setting SG-DBR tunable laser wavelength and power in the wavelength tuning closed loop test.
Described wavelength, power monitoring circuit are the A/D sample circuit, and described A/D sample circuit, 2 second precision resistances and SG-DBR tunable laser are electrically connected successively, and the A/D sample circuit is used for gathering the magnitude of voltage of 2 second precision resistances.
Described single-chip microcomputer is connected with FLASH with PC, and PC is used for showing the deal with data of single-chip microcomputer, and FLASH is used for the data of the electric current-wavelength correspondence of all passages of storage conversion back.
A kind of control method of SG-DBR tunable laser module, it comprises the steps:
(1) at first by virtual instrument, 5 first precision resistances and 2 second precision resistances the PCBA circuit board is carried out the linearity test, test obtains 7 parameter values, downloads in the single-chip microcomputer by PC;
The corresponding data of wavelength-electric current that 7 parameter values conversion SG-DBR tunable laser that (2) obtain according to test then provide is to exist among the FLASH behind the integer;
(3) at the PCBA circuit board SG-DBR tunable laser is installed, connecting PC afterwards tests, at first handle the wavelength of A/D sample circuit sampling, the ratio of power monitoring voltage and wavelength monitor voltage in the power monitoring circuit by single-chip microcomputer, the current value that comes the fine-adjusting current drive circuit to arrange, finely tune the temperature that automatic temperature control circuit arranges simultaneously, make temperature value and current value meet the theoretical value of corresponding wavelength, just can obtain one group of real current-wavelength corresponding data that the SG-DBR tunable laser is required.
After adopting such scheme, SG-DBR tunable laser module of the present invention and control method has the following advantages and good effect:
1, realized the automatic control of wavelength, control method is simple, wavelength and power stability;
2, circuit is simple, is easy to realize;
3, wavelength tuning range is wide, can realize the wavelength tuning of 103 passages, wavelength tuning range is all controlled at 191.15THz～196.15THz, wavelength interval in each passage is that 0.4nm(is channel spacing 50G), the wavelength error that allows through high low-temperature test for ± 6pm(be locking frequency be precision be ± 0.5G), be applicable to the control that the SG-DBR tunable laser drives.
Description of drawings
Fig. 1 is the structured flowchart of SG-DBR tunable laser module of the present invention;
Fig. 2 is the linear test of the PCBA circuit board block diagram of SG-DBR tunable laser module of the present invention;
Fig. 3 is the automatic temperature control circuit block diagram of SG-DBR tunable laser module of the present invention;
Fig. 4 is the current driving circuit block diagram of SG-DBR tunable laser module of the present invention;
Fig. 5 is wavelength, the power monitoring circuit block diagram of SG-DBR tunable laser module of the present invention;
Fig. 6 is SG-DBR tunable laser module of the present invention 103 channel wavelength stability curve figure in the time of 25 ℃;
Fig. 7 is SG-DBR tunable laser module of the present invention 103 channel wavelength stability curve figure in the time of 75 ℃.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, can be implemented so that those skilled in the art can better understand the present invention also, but illustrated embodiment is not as a limitation of the invention.
Extremely shown in Figure 5 as Fig. 1, SG-DBR tunable laser module of the present invention, comprise SG-DBR tunable laser 1, current driving circuit 2, wavelength, power monitoring circuit 3, automatic temperature control circuit 4, single-chip microcomputer 5, PC6, PCBA circuit board 7,5 first precision resistances 8,2 second precision resistances 9, virtual instrument 10 and FLASH11, wherein: SG-DBR tunable laser 1 adopts the tunable laser of Current Control Technology; Single-chip microcomputer 5 adopts Microchip PIC18LF6722-I/PT that temperature and current output value are set, and communicates by letter with PC6;
Single-chip microcomputer 5, automatic temperature control circuit 4, SG-DBR tunable laser 1 are electrically connected successively, the realization temperature is controlled automatically, in conjunction with shown in Figure 3, automatic temperature control circuit 4 comprises difference channel 12, PI circuit 13 and TEC driver 14, single-chip microcomputer 5, difference channel 12, PI circuit 13, TEC driver 14 and SG-DBR tunable laser 1 closed loop successively are electrically connected, and PI circuit 13 is a kind of ratio, integrating circuit of being made up of resistance, electric capacity, amplifier; TEC driver 14 is a kind of big current powers, the driver that efficient is high, integrated PWM generator, four field effect transistor of gate drive circuit and H bridge construction, output current can reach 2A, single-chip microcomputer 5 is gathered the temperature of SG-DBR tunable laser 1, then behind the design temperature, through passing to TEC driver 14 after 13 variations of PI circuit, change the working temperature of SG-DBR tunable laser 1 at last, reach dynamic balance, automatic temperature control circuit 4 is implemented in the work of SG-DBR tunable laser 1 under the normal temperature, guarantee that all wavelength output is in same temperature, and for the stable output of wavelength and power provides guarantee, so just variations in temperature is insensitive to external world; The operation principle of automatic temperature control circuit 4 is: the temperature that single-chip microcomputer 5 is gathered SG-DBR tunable laser 1 is connected difference channel 11 with the temperature that single-chip microcomputer 5 is set, after the magnitude of voltage of difference changes through PI circuit 13, magnitude of voltage is passed to TEC driver 14, the certain current value of output such as the bridge circuit in the TEC driver 14 is given SG-DBR tunable laser 1, SG-DBR tunable laser 1 can be freezed or heats according to sense of current, make the temperature constant of itself, sort circuit is fairly simple reliable, the variation of ambient temperature, little to the output influence of wavelength;
Single-chip microcomputer 5, wavelength, power monitoring circuit 3, SG-DBR tunable laser 1 are electrically connected successively, realize the monitoring of power and wavelength, and in conjunction with shown in Figure 5, wavelength, power monitoring circuit 3 are A/D sample circuit 15.2 second precision resistances 9 and SG-DBR tunable laser 1 on single-chip microcomputer 5, A/D sample circuit 15, the PCBA circuit board 7 are electrically connected successively.A/D sample circuit 15 collects the magnitude of voltage of 2 second precision resistances 9, after single-chip microcomputer 5 computings, the output of fine setting wavelength and power in the wavelength tuning closed loop test, the operation principle of wavelength, power monitoring circuit 3 is: the tables of data that provides according to SG-DBR tunable laser 1, it is when work, the ratio of the magnitude of voltage of wavelength and power will guarantee in certain scope, behind single-chip microcomputer 5 fine-adjusting current drive circuits 2 output current values, give 1 output of SG-DBR tunable laser corresponding wavelength;
Single-chip microcomputer 5, current driving circuit 2, SG-DBR tunable laser 1 are electrically connected successively, realize 5 current value output controls, the current driving circuit 2 main accurate outputs that realize wavelength, and in conjunction with shown in Figure 4, current driving circuit 2 is current drives chip 16.Current drives chip 16 adopts Maxim MAX5110GTJ+ that electric current output is set, single-chip microcomputer 5, current drives chip 16, SG-DBR tunable laser 1 are electrically connected successively, by 5 current values of SPI communication protocol control current drives chip 16 outputs, reach the normal value of SG-DBR tunable laser 1 wavelength output after single-chip microcomputer 5 deal with data;
Because the basic foundation of experimental measurement is the electric current-wavelength table of SG-DBR tunable laser 1, with and working temperature, but these group data can only be reference values, because in the PCBA circuit board, the factor that influences electric current is a lot, so in operate as normal, need one group of reliable current value to guarantee the stable of wavelength, therefore by the linearity test of PCBA circuit board is set, thereby obtain one group of reliable current value and guarantee the stable of wavelength: in conjunction with shown in Figure 2, virtual instrument 10,2 second precision resistances 9 on the PCBA circuit board 7, PCBA circuit board 7 and 5 first precision resistances 8 are electrically connected forms closed loop circuit, realizes the linearity test of whole PCBA circuit board;
Single-chip microcomputer 5 is connected with FLASH11, and FLASH11 mainly is storage conversion back all passages, the i.e. data of the electric current of 103 passages-wavelength correspondence.
The control method of SG-DBR tunable laser module of the present invention, it comprises the steps:
(1) at first carry out the linearity test according to virtual instrument 10,5 first precision resistances 8,9 pairs of PCBA circuit boards of 2 second precision resistances 7, test obtains 7 parameter values, downloads in the single-chip microcomputer 5 by PC6;
The corresponding data of wavelength-electric current that 7 parameter values conversion SG-DBR tunable laser 1 that (2) obtain according to test then provide is to exist among the FLASH11 behind the integer;
(3) at PCBA circuit board 7 SG-DBR tunable laser 1 is installed, connecting PC 6 afterwards tests, at first handle the wavelength, the power monitoring voltage in the power monitoring circuit 3 of A/D sample circuits 15 samplings and the ratio of wavelength monitor voltage by single-chip microcomputer 5, the current value that comes fine-adjusting current drive circuit 2 to arrange, finely tune the temperature that automatic temperature control circuit 4 arranges simultaneously, make temperature value and current value meet the theoretical value of corresponding wavelength, just can obtain required true " electric current-wavelength " corresponding data of one group of SG-DBR tunable laser 1.
As shown in Figure 6 and Figure 7, be respectively the Wavelength stabilized linearity curve that 25 ℃ the time and 75 ℃ the time 103 passages is carried out with above-mentioned control method, the X-axis shown in the figure represents the wavelength channel channel spacing; Y-axis represents wavelength offset; By among the figure as can be known, adopting the wavelength tuning range of SG-DBR tunable laser module control SG-DBR tunable laser 1 of the present invention is 191.15THz～196.15THz(totally 103 passages), the wavelength interval is that 0.4nm(is channel spacing 50G), the wavelength error of permission for ± 6pm(be locking frequency be precision be ± 0.5G).
The above embodiment is the preferred embodiment that proves absolutely that the present invention lifts, and protection scope of the present invention is not limited thereto.Being equal to that those skilled in the art do on basis of the present invention substitutes or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (10)
1. SG-DBR tunable laser module is characterized in that: comprising:
SG-DBR tunable laser: be used for the different wave length in the certain bandwidth of output;
PCBA circuit board: after be used for gathering the electric current and temperature of SG-DBR tunable laser, and adjust electric current and the temperature of SG-DBR tunable laser according to described electric current and temperature.
2. SG-DBR tunable laser module according to claim 1, it is characterized in that: also comprise linear test circuit, for before the electric current of adjusting the SG-DBR tunable laser at described PCBA circuit board and the temperature described PCBA circuit board being carried out the linearity test, described linear test circuit comprises 2 precision second resistance on virtual instrument, 5 first precision resistances and the PCBA circuit board, and described virtual instrument, 5 first precision resistances, PCBA circuit board and 2 second precision resistances are electrically connected the composition closed loop circuit successively.
3. SG-DBR tunable laser module as claimed in claim 2, it is characterized in that: described PCBA circuit board is provided with current driving circuit and single-chip microcomputer, described single-chip microcomputer, current driving circuit and SG-DBR tunable laser are electrically connected successively, after the single-chip microcomputer deal with data, by 5 current values of SPI communication protocol control current driving circuit output, reach the normal value of SG-DBR tunable laser wavelength output.
4. SG-DBR tunable laser module as claimed in claim 3, it is characterized in that: described current driving circuit is a current drives chip.
5. as the described SG-DBR tunable laser module of one of claim 1-4, it is characterized in that: also be provided with automatic temperature control circuit on the described PCBA circuit board, described single-chip microcomputer, automatic temperature control circuit, SG-DBR tunable laser are electrically connected successively, and automatic temperature control circuit feeds back to the SG-DBR tunable laser after handling for the temperature of the SG-DBR tunable laser that single-chip microcomputer is collected again.
6. SG-DBR tunable laser module according to claim 5, it is characterized in that: described automatic temperature control circuit comprises difference channel, PI circuit and TEC driver, described single-chip microcomputer, difference channel, PI circuit, TEC driver and SG-DBR tunable laser closed loop are electrically connected, described single-chip microcomputer is gathered the temperature of SG-DBR tunable laser, then behind the design temperature, through passing to the TEC driver after the PI circuit variation, change the working temperature of SG-DBR tunable laser at last, reach dynamic balance.
7. SG-DBR tunable laser module as claimed in claim 6, it is characterized in that: also be provided with wavelength, power monitoring circuit on the described PCBA circuit board, described single-chip microcomputer, wavelength, power monitoring circuit, SG-DBR tunable laser are electrically connected successively, wavelength, power monitoring circuit are used for gathering the magnitude of voltage of 2 second precision resistances on the PCBA circuit board, after the single-chip microcomputer computing, the output of fine setting SG-DBR tunable laser wavelength and power in the wavelength tuning closed loop test.
8. SG-DBR tunable laser module according to claim 7, it is characterized in that: described wavelength, power monitoring circuit are the A/D sample circuit, described A/D sample circuit, 2 second precision resistances and SG-DBR tunable laser are electrically connected successively, and the A/D sample circuit is used for gathering the magnitude of voltage of 2 second precision resistances.
9. SG-DBR tunable laser module according to claim 8, it is characterized in that: described single-chip microcomputer is connected with FLASH with PC, and PC is used for showing the deal with data of single-chip microcomputer, and FLASH is used for the data of the electric current-wavelength correspondence of all passages of storage conversion back.
10. the control method as the described SG-DBR tunable laser module of one of claim 1-9 is characterized in that: comprise the steps:
(1) at first by virtual instrument, 5 first precision resistances and 2 second precision resistances the PCBA circuit board is carried out the linearity test, test obtains 7 parameter values, downloads in the single-chip microcomputer by PC;
The corresponding data of wavelength-electric current that 7 parameter values conversion SG-DBR tunable laser that (2) obtain according to test then provide is to exist among the FLASH behind the integer;
(3) at the PCBA circuit board SG-DBR tunable laser is installed, connecting PC afterwards tests, at first handle the wavelength of A/D sample circuit sampling, the ratio of power monitoring voltage and wavelength monitor voltage in the power monitoring circuit by single-chip microcomputer, the current value that comes the fine-adjusting current drive circuit to arrange, finely tune the temperature that automatic temperature control circuit arranges simultaneously, make temperature value and current value meet the theoretical value of corresponding wavelength, just can obtain one group of real current-wavelength corresponding data that the SG-DBR tunable laser is required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101896303A CN103297147A (en) | 2013-05-21 | 2013-05-21 | SG-DBR (sampled grafting distributed bragg reflection) tunable laser device module and control method implemented by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101896303A CN103297147A (en) | 2013-05-21 | 2013-05-21 | SG-DBR (sampled grafting distributed bragg reflection) tunable laser device module and control method implemented by same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103297147A true CN103297147A (en) | 2013-09-11 |
Family
ID=49097528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101896303A Pending CN103297147A (en) | 2013-05-21 | 2013-05-21 | SG-DBR (sampled grafting distributed bragg reflection) tunable laser device module and control method implemented by same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103297147A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753601A (en) * | 2013-12-31 | 2015-07-01 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN105790065A (en) * | 2016-03-08 | 2016-07-20 | 山东大学 | Multi-wavelength tunable laser diode (LD) driving power supply system capable of remote control and working method of system |
| CN106330333A (en) * | 2015-06-30 | 2017-01-11 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| US10122151B2 (en) | 2015-06-30 | 2018-11-06 | Hisense Broadband Multimedia Technologies, Ltd. | Optical module |
| CN109802298A (en) * | 2016-10-21 | 2019-05-24 | 北京信息科技大学 | Butterfly encapsulates SG-DBR semiconductor laser with tunable module control system |
| CN111211842A (en) * | 2019-12-27 | 2020-05-29 | 京信通信系统（中国）有限公司 | Wavelength division multiplexing data transmission method, device, equipment and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1995936A (en) * | 2005-12-31 | 2007-07-11 | 中国科学院半导体研究所 | Automated test control system and method for wavelength tunable laser |
| US20090022185A1 (en) * | 2007-07-19 | 2009-01-22 | Eudyna Devices Inc. | Method of controlling semiconductor laser |
| US20100022044A1 (en) * | 2005-12-27 | 2010-01-28 | Eudyna Devices Inc. | Laser device, laser module, semiconductor laser and fabrication method of semiconductor laser |
| CN102044844A (en) * | 2010-11-24 | 2011-05-04 | 中国科学院半导体研究所 | Distributed amplification SGDBR (sampled grating distributed Bragg reflector) tunable laser structure |
| CN102798943A (en) * | 2011-05-24 | 2012-11-28 | 住友电气工业株式会社 | Optical transceiver implemented with tunable LD |
-
2013
- 2013-05-21 CN CN2013101896303A patent/CN103297147A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100022044A1 (en) * | 2005-12-27 | 2010-01-28 | Eudyna Devices Inc. | Laser device, laser module, semiconductor laser and fabrication method of semiconductor laser |
| CN1995936A (en) * | 2005-12-31 | 2007-07-11 | 中国科学院半导体研究所 | Automated test control system and method for wavelength tunable laser |
| US20090022185A1 (en) * | 2007-07-19 | 2009-01-22 | Eudyna Devices Inc. | Method of controlling semiconductor laser |
| CN102044844A (en) * | 2010-11-24 | 2011-05-04 | 中国科学院半导体研究所 | Distributed amplification SGDBR (sampled grating distributed Bragg reflector) tunable laser structure |
| CN102798943A (en) * | 2011-05-24 | 2012-11-28 | 住友电气工业株式会社 | Optical transceiver implemented with tunable LD |
Non-Patent Citations (1)
| Title |
|---|
| 吕辉: "《单片集成可调谐半导体激光器的控制研究》", 《中国博士学位论文全文数据库信息科技辑》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753601A (en) * | 2013-12-31 | 2015-07-01 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN104753601B (en) * | 2013-12-31 | 2018-04-03 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN106330333A (en) * | 2015-06-30 | 2017-01-11 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| US10008825B2 (en) | 2015-06-30 | 2018-06-26 | Hisense Broadband Multimedia Technologies Co., Ltd. | Optical module |
| US10122151B2 (en) | 2015-06-30 | 2018-11-06 | Hisense Broadband Multimedia Technologies, Ltd. | Optical module |
| CN106330333B (en) * | 2015-06-30 | 2019-03-05 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN105790065A (en) * | 2016-03-08 | 2016-07-20 | 山东大学 | Multi-wavelength tunable laser diode (LD) driving power supply system capable of remote control and working method of system |
| CN109802298A (en) * | 2016-10-21 | 2019-05-24 | 北京信息科技大学 | Butterfly encapsulates SG-DBR semiconductor laser with tunable module control system |
| CN111211842A (en) * | 2019-12-27 | 2020-05-29 | 京信通信系统（中国）有限公司 | Wavelength division multiplexing data transmission method, device, equipment and storage medium |
| WO2021129636A1 (en) * | 2019-12-27 | 2021-07-01 | 京信网络系统股份有限公司 | Wavelength division multiplexing data sending method and apparatus, and device and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103297147A (en) | SG-DBR (sampled grafting distributed bragg reflection) tunable laser device module and control method implemented by same | |
| US20050180470A1 (en) | Measurement of wavelength transients in tunable lasers | |
| CN105182105B (en) | A kind of automatic testing equipment of the automatically controlled characteristic of micro-loop chip | |
| EP2091161A1 (en) | A method and device for stabilizing multi-channel optical signal wavelength | |
| CN1436385A (en) | Method for controlling performance of optical amplifier | |
| Niemi et al. | Tunable silicon etalon for simultaneous spectral filtering and wavelength monitoring of a DWDM transmitter | |
| CN1289943C (en) | Calibrating voltage controllable optical components in communication systems | |
| CN203661071U (en) | Optical module | |
| CN109194411A (en) | A kind of device and method measuring silicon light coherent receiver Photoresponse | |
| CN101282179A (en) | Method and system for locking light transmitter output wavelength | |
| CN102564573B (en) | Multi-wavelength laser power time division measurement method | |
| CN110988450A (en) | Safe and automatic magnetic field current feedback device and method | |
| CN202471240U (en) | Multi-wavelength laser power time measuring device | |
| CN106341189B (en) | Optical module | |
| CN104753601B (en) | Optical module | |
| CN202384995U (en) | Circuit for continuously adjusting and outputting 0-10 V high-stability direct-current voltage | |
| CN207440608U (en) | Realize the communicator of electric device control system test and test system | |
| CN108123757A (en) | A kind of apparatus and method of fast automatic calibration and adjustable attenuation based on MCVOA | |
| Yang et al. | An ultrahigh performance laser driver based on novel composite topology enhanced Howland current Source | |
| SE502993C2 (en) | Method and apparatus for distributing and receiving wavelength reference in optical multi-channel network | |
| CN218679078U (en) | Photoelectric composite module testing device | |
| Zamora Rovira | High resolution DFB laser tuning for optical spectrum analysis in access networks | |
| Wang et al. | Wafer-Level Test Solution Development for a Quad-Channel Linear Driver Die in a 400G Silicon Photonics Transceiver Module | |
| CN1819502B (en) | Wave-length controlling circuit of light communication wavelength division multiplexing | |
| DE102005010065A1 (en) | Photoelectric conversion device and photoelectric conversion system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 430079 innovation and Technology Park, East Lake New Technology Development Zone, Wuhan, Hubei, China Applicant after: WUHAN AOXIN TECHNOLOGY CO., LTD. Address before: 430079 innovation and Technology Park, East Lake New Technology Development Zone, Wuhan, Hubei, China Applicant before: AOC Technologies (Wuhan), Inc. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: AOC TECHNOLOGIES (WUHAN), INC. TO: WUHAN AOC TECHNOLOGIES INC. |
|
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 430079 Hubei city of Wuhan province East Lake New Technology Development Zone, the Great Wall Road, Wuhan AoXin Technology Co. Ltd. 1 1-3 layer plant No. 2 Applicant after: AOC Technologies (Wuhan), Inc. Address before: 430079 innovation and Technology Park, East Lake New Technology Development Zone, Wuhan, Hubei, China Applicant before: WUHAN AOXIN TECHNOLOGY CO., LTD. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: WUHAN AOC TECHNOLOGIES INC. TO: AOC TECHNOLOGIES (WUHAN), INC. |
|
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130911 |
|
| RJ01 | Rejection of invention patent application after publication |