CN101814958A - DWDM optical module capable of tuning 50GHz and 100GHz channel spacing and method thereof - Google Patents
DWDM optical module capable of tuning 50GHz and 100GHz channel spacing and method thereof Download PDFInfo
- Publication number
- CN101814958A CN101814958A CN201010124810A CN201010124810A CN101814958A CN 101814958 A CN101814958 A CN 101814958A CN 201010124810 A CN201010124810 A CN 201010124810A CN 201010124810 A CN201010124810 A CN 201010124810A CN 101814958 A CN101814958 A CN 101814958A
- Authority
- CN
- China
- Prior art keywords
- wavelength
- optical module
- channel spacing
- 50ghz
- 100ghz
- 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
Landscapes
- Semiconductor Lasers (AREA)
Abstract
The invention discloses a DWDM optical module capable of tuning 50GHz and 100GHz channel spacing and method thereof. The DWDM optical module comprises a system board, a micro controller provided with an XFPMSA register, a temperature control circuit, an EML laser component and a wavelength measuring instrument; wherein the system board compares the read preset wavelength with the actual working wavelength of optical module to form a negative feedback closed loop, so as to calibrate and maintain the stability of wavelength, the micro controller is used for communicating with the system board and monitoring the operation of optical module, the temperature control circuit is used for stabilizing the working wavelength of module, and the input terminal of the wavelength measuring instrument is connected with the output terminal of the EML laser component while the output terminal is connected with the system board. The invention can manufacture standard optical module applicable to 50GHz channel spacing by the existing standard optical module and commercially available low cost standard optical devices, and meanwhile switching between 50GHz and 100GHz channel spacing can be realized.
Description
Technical field
The present invention relates to the DWDM optical module, the DWDM optical module and the method for especially a kind of tunable 50GHz and 100GHz channel spacing.
Background technology
Along with the quick growth of Chinese user to various communication needs, and the accelerate development of 3G and 4G networking from now on, how from multiple alternative plan, to find out low cost solution, with performance that improves communication system and the bandwidth that increases system, become the focus of system, optical module and device manufacturer common concern.
From the angle of system applies, fully effectively utilize bandwidth of an optical fiber, improve the transmission capacity of simple optical fiber, a kind of rational solution of can yet be regarded as.WDM(WavelengthDivisionMultiplexing, wavelength division multiplexing) technology is exactly at optical sender, light wave multiplexer by transmitter merges together the optical carrier (carrying various information) of two or more different wave lengths, thereby the same optical fiber that can be coupled in the system transmits; When arriving optical receiver, can go the optical carrier of various wavelength is separated by a light wave demodulation multiplexer, then the optical carrier of various wavelength is handled.Therefore,, have good reconstruct and autgmentability, become the developing direction of high speed transmission network at present based on the optical transport network of WDM technology.According to the difference of channel spacing, WDM can be divided into CWDM (coarse wavelength division multiplexer) and DWDM (dense wave division multipurpose), and wherein the channel spacing of CWDM is 20nm, and the channel spacing of DWDM is from 0.2nm to 1.2nm.Because the channel spacing broad of CWDM, light wave that can only multiplexing 5 to 6 wavelength around on same optical fiber, but the DWDM technology can be multiplexing nearly 80 different wave lengths or data channel become an optical data stream and on simple optical fiber, transmit, so the DWDM technology extensively is disposed in service supplier's the backbone network.
According to the suggestion of ITU-T, the standard wave length of dwdm system is spaced apart the integral multiple of 0.4nm (50GHz) or 0.8nm (100GHz).For the 100GHz channel spacing, optical module requires its light source that adopts to have stable operation wavelength and low characteristics such as warble, therefore, the DFB(DistributedFeedBack of refrigeration, the distributed feed-back type) or DBR(DOSBOOTRECORD, dos boot record) semiconductor laser, perhaps the monolithic of Zhi Leng dfb semiconductor laser and electroabsorption modulator is integrated is preferred option, these schemes all are to reach the wavelength channel of wanting by thermal tuning, guarantee that by control and the temperature of keeping laser operation wavelength does not have big drift during the whole working life of device then, thereby avoid the optical crosstalk of DWDM interchannel.Yet for the 50GHz channel spacing, it is not enough only depending on the temperature of keeping laser, its reason is that the temperature and the wavelength of semiconductor laser exists a temperature coefficient, this temperature coefficient approximately is 0.08nm-0.1nm/ ° of C, also can wear out as the thermistor that is used for temperature Control and Feedback benchmark along with the time, and the variation of the interior temperature gradient of laser shell, thereby cause the inaccurate of operation wavelength, be difficult to keep the requirement of 50GHz channel spacing, cause the DWDM interchannel optical crosstalk to occur.Therefore, the semiconductor laser that is used for the 50GHz channel spacing in the prior art, usually need a built-in wavelength locker to go to calibrate constantly and lock operation wavelength as benchmark, but can cause the increase of laser shell size and the increase of cost like this, thereby can't be applied to require among the optical module of hot plug.
Yet, be used for the EML laser assembly of the refrigeration of DWDMXFP optical module at present, can only guarantee at beginning of lifetime+/-wavelength stability of 40pm, and+/-wavelength stability in 100pm late period in life-span; But for the interval of 50GHz channel, then optical module need satisfy+/-wavelength stability of 20pm beginning of lifetime, and+/-wavelength stability in 50pm late period in life-span.Therefore, current commercially available refrigeration EML laser assembly can only be applied to 100GHz channel spacing DWDMXFP optical module, and can not reach the requirement of 50GHz channel spacing DWDMXFP optical module.
Summary of the invention
The DWDM optical module and the method that the purpose of this invention is to provide tunable 50GHz and 100GHz channel spacing, to solve the deficiency that exists of prior art, make by existing standard optical module applicable, and the commercially available device of standard light cheaply produces the standard optical module applicable that is suitable for the 50GHz channel spacing, simultaneously can be in the switching between 50GHz and 100GHz channel spacing.
Technical scheme of the present invention is:
The DWDM optical module of tunable 50GHz and 100GHz channel spacing comprises:
One system board is compared the wavelength of reading that is provided with the real work wavelength of optical module, then by the specified register of XFPMSA agreement is set, construct a negative feedback closed loop to calibrate and to keep the stability of wavelength;
One has the microcontroller of XFPMSA register, is used for and the communication of system board and the work of Monitoring and Controlling optical module;
One temperature-control circuit is used for the operation wavelength of stable module;
One EML laser assembly,
Also comprise a wavelength measurement instrument, the input of described wavelength measurement instrument is connected with the output of described EML laser assembly, and output is connected with the system version.
Concrete, described wavelength measurement instrument is a wavemeter, also can be a wavelength standard.
Concrete, described EML laser assembly is the refrigeration EML laser assembly through burin-in process.
The method of tunable 50GHz and 100GHz channel spacing comprises:
Step 1 is carried out 50GHz or 100GHz channel spacing and is selected, if select the 100GHz channel spacing, then by the XFPMSA register work operation wavelength being set is to adopt standard optical module applicable to handle behind the 0.8nm, otherwise carries out:
Step 2, by the XFPMSA register operation wavelength being set is 0.4nm;
Step 3 goes out the wavelength that is provided with of optical module by the XFPMSA register read, and the real work wavelength of the optical module of measuring with the wavelength measurement instrument calculates wavelength offset;
Step S3 utilizes the real work wavelength of wavelength offset alignment light module.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is a standard DWDMXFP optical module schematic diagram;
Fig. 2 is the aging operation wavelength curve chart of EML laser assembly;
Fig. 3 is the schematic diagram of optical module of the present invention;
Fig. 4 is the flow chart of method of work of the present invention.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
The frame principles of the DWDMXFP standard optical module applicable of existing refrigeration comprises the EML laser assembly of a refrigeration, a temperature-control circuit that is used for the steady operation wavelength, and other drive circuit as shown in Figure 1; Microcontroller is used for and the communicating by letter and the work of Monitoring and Controlling optical module of host computer, for example sets and control the wavelength of laser assembly.Under this mode of operation, temperature-control circuit is positioned at the thermistor resistance of laser assembly by monitoring, forms a close loop negative feedback and goes to adjust and keep operation wavelength within a predefined range of drift.
As shown in Figure 3, be schematic diagram of the present invention.The present invention is on the basis of the optical module of the 100GHz of existing standard channel spacing DWDMXFP standard, and the outside adds a wavelength measurement instrument, with the operation wavelength of monitoring calculation setting and the deviation of the operation wavelength of reality, the wavelength variation of correcting optical module by software.The DWDM optical module of tunable 50GHz of the present invention and 100GHz channel spacing comprises:
One system board is compared the wavelength of reading that is provided with the real work wavelength of optical module, then by the specified register of XFPMSA agreement is set, construct a negative feedback closed loop to calibrate and to keep the stability of wavelength;
One has the microcontroller of XFPMSA register, is used for and the communication of system board and the work of Monitoring and Controlling optical module, for example sets and control the operation wavelength of EML laser assembly;
One temperature-control circuit is used for the operation wavelength of stable module;
One EML laser assembly,
Also comprise a wavelength measurement instrument, the input of described wavelength measurement instrument is connected with the output of described EML laser assembly, and output is connected with the system version.
Concrete, as preferably, described wavelength measurement instrument is a wavemeter, also can be a wavelength standard.
Concrete, as preferably, described EML laser assembly is the refrigeration EML laser assembly through burin-in process.As shown in Figure 2, the EML laser assembly is after the certain burin-in process of process, its wavelength repeated fine, and the drift of its wavelength mainly is because the variation of aging and the component internal stress and the temperature gradient of thermistor, therefore, in the present invention, in advance the EML laser assembly being carried out beginning of lifetime accelerated ageing in advance handles, to reduce the aging influence that reaches the component internal STRESS VARIATION to wavelength of thermistor, reach and realize that wavelength can be stabilized within the desired wavelength length scope of 50GHz channel spacing in work subsequently.
The present invention can by software control, can select between 50GHz channel spacing and 100GHz channel spacing and dispose flexibly based on the requirement of practical application layer.
As shown in Figure 4, the method for tunable 50GHz of the present invention and 100GHz channel spacing may further comprise the steps:
Step 1 is carried out 50GHz or 100GHz channel spacing and is selected, if select the 100GHz channel spacing, then by the XFPMSA register work operation wavelength being set is to adopt standard optical module applicable to handle behind the 0.8nm, otherwise carries out:
Step 2, by the XFPMSA register operation wavelength being set is 0.4nm;
Step 3 goes out the wavelength that is provided with of optical module by the XFPMSA register read, and the real work wavelength of the optical module of measuring with the wavelength measurement instrument calculates wavelength offset;
Step S3 utilizes the real work wavelength of wavelength offset alignment light module.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (5)
1. the DWDM optical module of tunable 50GHz and 100GHz channel spacing, comprise: a system board, the wavelength of reading that is provided with is compared with the real work wavelength of optical module, by the specified register of XFPMSA agreement is set, construct a negative feedback closed loop then to calibrate and to keep the stability of wavelength; One has the microcontroller of XFPMSA register, is used for and the communication of system board and the work of Monitoring and Controlling optical module; One temperature-control circuit is used for the operation wavelength of stable module; One EML laser assembly is characterized in that, also comprises a wavelength measurement instrument, and the input of described wavelength measurement instrument is connected with the output of described EML laser assembly, and output is connected with the system version.
2. the DWDM optical module of tunable 50GHz according to claim 1 and 100GHz channel spacing is characterized in that, described wavelength measurement instrument is a wavemeter.
3. the DWDM optical module of tunable 50GHz according to claim 1 and 100GHz channel spacing is characterized in that, described wavelength measurement instrument is a wavelength standard.
4. the DWDM optical module of tunable 50GHz according to claim 1 and 100GHz channel spacing is characterized in that, described EML laser assembly is the refrigeration EML laser assembly through burin-in process.
5. the method for tunable 50GHz and 100GHz channel spacing is characterized in that,
Step 1 is carried out 50GHz or 100GHz channel spacing and is selected, if select the 100GHz channel spacing, then by the XFPMSA register work operation wavelength being set is to adopt standard optical module applicable to handle behind the 0.8nm, otherwise carries out:
Step 2, by the XFPMSA register operation wavelength being set is 0.4nm;
Step 3 goes out the wavelength that is provided with of optical module by the XFPMSA register read, and the real work wavelength of the optical module of measuring with the wavelength measurement instrument calculates wavelength offset;
Step 4 is utilized the real work wavelength of wavelength offset alignment light module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010124810A CN101814958A (en) | 2010-03-16 | 2010-03-16 | DWDM optical module capable of tuning 50GHz and 100GHz channel spacing and method thereof |
| US13/050,787 US8929748B2 (en) | 2010-03-16 | 2011-03-17 | Tunable dense wavelength division multiplexing transceiver, circuits and devices therefor, and methods for making and using such transceivers, circuits and devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010124810A CN101814958A (en) | 2010-03-16 | 2010-03-16 | DWDM optical module capable of tuning 50GHz and 100GHz channel spacing and method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101814958A true CN101814958A (en) | 2010-08-25 |
Family
ID=42622090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010124810A Pending CN101814958A (en) | 2010-03-16 | 2010-03-16 | DWDM optical module capable of tuning 50GHz and 100GHz channel spacing and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101814958A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401605A (en) * | 2013-07-12 | 2013-11-20 | 青岛海信宽带多媒体技术有限公司 | Normal-temperature debugging system based on hot-pluggable optical module and normal-temperature debugging method |
| WO2017148079A1 (en) * | 2016-03-01 | 2017-09-08 | 中兴通讯股份有限公司 | Method for managing multi-wavelength passive optical network, and optical module |
| CN112290375A (en) * | 2020-10-29 | 2021-01-29 | 瑞泰(威海)电子科技有限公司 | Wavelength tunable optical component |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1252654A (en) * | 1998-10-22 | 2000-05-10 | 三星电子株式会社 | Wave length stabilizer in wave division shared optic transmission system |
| US20040114646A1 (en) * | 2002-11-05 | 2004-06-17 | James Stewart | Calibration of a multi-channel optoelectronic module with integrated temperature control |
| CN1933375A (en) * | 2005-09-12 | 2007-03-21 | 中兴通讯股份有限公司 | Tunable regulating light transmitting module and scaling and regulating method thereof |
| CN1943085A (en) * | 2005-03-16 | 2007-04-04 | 日本电信电话株式会社 | Light source for optical communication and its wavelength monitoring/controlling method |
| US20070297468A1 (en) * | 2002-02-12 | 2007-12-27 | Finisar Corporation | Control circuit for optoelectronic module with integrated temperature control |
| CN101149722A (en) * | 2007-10-22 | 2008-03-26 | 中兴通讯股份有限公司 | Method for executing CPU access to XFP optical module |
| CN201623709U (en) * | 2010-03-16 | 2010-11-03 | 索尔思光电（成都）有限公司 | DWDM optical module capable of tuning 50GHz and 100 GHz channel spacing |
-
2010
- 2010-03-16 CN CN201010124810A patent/CN101814958A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1252654A (en) * | 1998-10-22 | 2000-05-10 | 三星电子株式会社 | Wave length stabilizer in wave division shared optic transmission system |
| US20070297468A1 (en) * | 2002-02-12 | 2007-12-27 | Finisar Corporation | Control circuit for optoelectronic module with integrated temperature control |
| US20040114646A1 (en) * | 2002-11-05 | 2004-06-17 | James Stewart | Calibration of a multi-channel optoelectronic module with integrated temperature control |
| CN1943085A (en) * | 2005-03-16 | 2007-04-04 | 日本电信电话株式会社 | Light source for optical communication and its wavelength monitoring/controlling method |
| CN1933375A (en) * | 2005-09-12 | 2007-03-21 | 中兴通讯股份有限公司 | Tunable regulating light transmitting module and scaling and regulating method thereof |
| CN101149722A (en) * | 2007-10-22 | 2008-03-26 | 中兴通讯股份有限公司 | Method for executing CPU access to XFP optical module |
| CN201623709U (en) * | 2010-03-16 | 2010-11-03 | 索尔思光电（成都）有限公司 | DWDM optical module capable of tuning 50GHz and 100 GHz channel spacing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401605A (en) * | 2013-07-12 | 2013-11-20 | 青岛海信宽带多媒体技术有限公司 | Normal-temperature debugging system based on hot-pluggable optical module and normal-temperature debugging method |
| CN103401605B (en) * | 2013-07-12 | 2016-06-29 | 青岛海信宽带多媒体技术有限公司 | Room temperature based on hot-pluggable optical module debugs system and room temperature adjustment method |
| WO2017148079A1 (en) * | 2016-03-01 | 2017-09-08 | 中兴通讯股份有限公司 | Method for managing multi-wavelength passive optical network, and optical module |
| US10985860B2 (en) | 2016-03-01 | 2021-04-20 | Zte Corporation | Method for managing multi-wavelength passive optical network, and optical module |
| CN112290375A (en) * | 2020-10-29 | 2021-01-29 | 瑞泰(威海)电子科技有限公司 | Wavelength tunable optical component |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8929748B2 (en) | Tunable dense wavelength division multiplexing transceiver, circuits and devices therefor, and methods for making and using such transceivers, circuits and devices | |
| CN201623709U (en) | DWDM optical module capable of tuning 50GHz and 100 GHz channel spacing | |
| CN107959541B (en) | The control method and device of micro-ring resonator | |
| US20070116468A1 (en) | Optical tunable asymmetric interleaver and upgrade for dense wavelength division multiplexed networks | |
| US6701222B1 (en) | Transmission systems and components utilizing thermo-stabilization and method of use therein | |
| US7593647B2 (en) | Apparatuses and methods for automatic wavelength locking of an optical transmitter to the wavelength of an injected incoherent light signal | |
| WO2015006902A1 (en) | Wavelength alignment method and device, and optical network system | |
| JP2009081512A (en) | Optical transmitting apparatus, and setting-value determining method | |
| US20160204569A1 (en) | Wavelength tunable optical transmitter | |
| EP3187930A1 (en) | Apparatus and method of resonance wavelength alignment for ring modulators | |
| EP3105869B1 (en) | Optical carrier selector system and method | |
| US20170353268A1 (en) | Optical transceiver using fec, optical transceiving system comprising same, and remote optical wavelength control method | |
| CN101814958A (en) | DWDM optical module capable of tuning 50GHz and 100GHz channel spacing and method thereof | |
| CN107275919A (en) | The apparatus and method that toroidal cavity resonator is tuned using self-heating stability | |
| WO2015001421A2 (en) | Wavelength tunable transmitter for twdm-pon and onu | |
| CN104733995A (en) | Wave length locking device | |
| JP2012507242A (en) | Communication system with tunable laser | |
| CN203554454U (en) | Passive optical network, optical link terminal (OLT) and optical module thereof | |
| US11233577B1 (en) | Optical communication systems and methods to communicate temperature variation information | |
| JP7225528B2 (en) | WAVELENGTH TUNABLE LIGHT SOURCE, OPTICAL MODULE, AND WAVELENGTH TUNABLE LIGHT SOURCE CONTROL METHOD | |
| WO2016148717A1 (en) | Transceiver nodes coupled to arrayed waveguide gratings | |
| WO2021159991A1 (en) | Optical device | |
| US9231371B2 (en) | Wavelength-tunable optical transmission apparatus | |
| CN103001703B (en) | A kind of optical module operation wavelength control system and method | |
| KR101672394B1 (en) | Wavelength tuning time measurement apparatus and method for the multi-wavelengths passive optical network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100825 |