CN112397996B - Wavelength adjusting method and device and optical module - Google Patents
Wavelength adjusting method and device and optical module Download PDFInfo
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- CN112397996B CN112397996B CN201910760084.1A CN201910760084A CN112397996B CN 112397996 B CN112397996 B CN 112397996B CN 201910760084 A CN201910760084 A CN 201910760084A CN 112397996 B CN112397996 B CN 112397996B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/0607—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying physical parameters other than the potential of the electrodes, e.g. by an electric or magnetic field, mechanical deformation, pressure, light, temperature
- H01S5/0612—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying physical parameters other than the potential of the electrodes, e.g. by an electric or magnetic field, mechanical deformation, pressure, light, temperature controlled by temperature
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4296—Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
Abstract
The invention provides a wavelength adjusting method and device and an optical module. The method comprises the following steps: acquiring a current wavelength value of a laser output beam of the optical module; comparing the current wavelength value with at least two preset wavelength values, and selecting the preset wavelength value with the minimum absolute value of the difference value between the current wavelength value and the preset wavelength value as a target wavelength value; and adjusting the wavelength of the light beam output by the laser to the target wavelength value by adjusting the temperature of a temperature control unit of the optical module. By adopting the method, the wavelength of the light beam output by the laser of the optical module can be adjusted to one of the preset wavelength values by adjusting the temperature of the temperature control unit so as to form a new transmission wavelength band and form a more optimized transmission wavelength interval, and the problem that the wavelength of the optical module in the prior art is not adjustable or the wavelength is adjustable but the adjustment precision cannot meet the transmission requirement of larger wavelength capacity is solved.
Description
Technical Field
The present invention relates to the field of wireless technologies, and in particular, to a wavelength adjustment method and apparatus, and an optical module.
Background
The 5G network needs to support multiple services and application scenarios, such as enhanced Mobile broadband embb (enhanced Mobile broadband) service with higher bandwidth and lower delay, mtc (Massive Machine-Type Communication) service supporting Massive user connections, and Ultra-high reliability and Ultra-Low delay urrllc (Ultra Reliable and Low Latency Communication).
With the arrival of 5G, base station deployment gradually takes an open platform-based wireless Access Network (C-RAN) as a main component, and a forward-transmission Network adopts an architecture of an Active Antenna Unit (AAU) and a Distributed Unit (DU) + a Centralized Unit (CU). To avoid the heavy use of the fronthaul optical fiber, the fronthaul network usually implements the fronthaul optical fiber multiplexing by combining and splitting waves.
At present, Wavelength Division Multiplexing (WDM) technology is usually adopted to transmit a plurality of color light wavelengths in the same optical fiber, and optical-to-electrical conversion is performed through an optical module, so as to effectively reduce the requirement of a fronthaul network on the number of optical fibers.
The optical modules in the conventional technology have two types, one type is an optical module with nonadjustable wavelength, and the wavelength of an optical signal sent by the optical module is nonadjustable and is distributed in a preset interval; one is a wavelength tunable optical module that can tune the wavelength of an optical signal emitted by the optical module to a target wavelength, but the wavelength can only be tuned with a certain degree of accuracy.
However, in the forward network transmission, it is generally required that the optical module is within a limited wavelength range, and a finer wavelength interval can be divided to meet the requirement of larger wavelength capacity transmission such as 5G forward transmission, and both types of the existing optical modules cannot meet the requirement.
Disclosure of Invention
The technical scheme of the invention aims to provide a wavelength adjusting method, a wavelength adjusting device and an optical module, which are used for solving the problem that the wavelength of the optical module in the prior art is not adjustable or the wavelength is adjustable, but the adjustment precision cannot meet the transmission requirement of larger wavelength capacity.
The embodiment of the invention provides a wavelength adjusting method, which is applied to an optical module, wherein the method comprises the following steps:
acquiring a current wavelength value of a laser output beam of the optical module;
comparing the current wavelength value with at least two preset wavelength values, and selecting the preset wavelength value with the minimum absolute value of the difference value between the current wavelength value and the preset wavelength value as a target wavelength value;
and adjusting the wavelength of the light beam output by the laser to the target wavelength value by adjusting the temperature of a temperature control unit of the optical module.
Optionally, the wavelength adjusting method further includes:
and determining an adjusting mode and an adjusted temperature value when the temperature of the temperature control unit is adjusted when the wavelength of the light beam output by the laser is adjusted to the target wavelength value.
Optionally, the wavelength adjustment method, wherein the determining an adjustment manner and an adjusted temperature value when adjusting the wavelength of the light beam output by the laser to the target wavelength value and adjusting the temperature of the temperature control unit includes:
when the target wavelength value is larger than the current wavelength value, determining that the adjusting mode is heating adjustment;
when the target wavelength value is smaller than the current wavelength value, determining that the adjusting mode is cooling adjustment;
and determining the adjusted temperature value according to the corresponding relation between the predetermined temperature change and the wavelength value change.
Optionally, the wavelength adjusting method further includes:
after the wavelength of the light beam output by the laser is adjusted to the target wavelength value, acquiring the current temperature value and the current configuration value of the temperature control unit;
and storing the current configuration value, and storing the current temperature value as the configuration temperature of the temperature control unit.
Optionally, the wavelength adjusting method further includes:
when the optical module is restarted, reading the stored current configuration value;
and outputting the current configuration value to the temperature control unit to enable the temperature control unit to be at the configuration temperature.
The embodiment of the present invention further provides a wavelength adjusting device, which is applied to an optical module, wherein the device includes:
the wavelength acquisition module is used for acquiring the current wavelength value of the laser output light beam of the optical module;
the selection module is used for comparing the current wavelength value with at least two preset wavelength values and selecting the preset wavelength value with the minimum absolute value of the difference value between the current wavelength value and the preset wavelength value as a target wavelength value;
and the temperature adjusting module is used for adjusting the wavelength of the light beam output by the laser to the target wavelength value by adjusting the temperature of the temperature control unit of the optical module.
Optionally, the wavelength adjusting apparatus, wherein the temperature adjusting module is further configured to:
and determining an adjusting mode and an adjusted temperature value when the temperature of the temperature control unit is adjusted when the wavelength of the light beam output by the laser is adjusted to the target wavelength value.
Optionally, the wavelength adjusting apparatus, wherein the determining, by the temperature adjusting module, an adjusting manner and an adjusted temperature value when adjusting the wavelength of the light beam output by the laser to the target wavelength value and adjusting the temperature of the temperature control unit includes:
when the target wavelength value is larger than the current wavelength value, determining that the adjusting mode is heating adjustment;
when the target wavelength value is smaller than the current wavelength value, determining that the adjusting mode is cooling adjustment;
and determining the adjusted temperature value according to the corresponding relation between the predetermined temperature change and the wavelength value change.
Optionally, the wavelength adjusting apparatus, wherein the apparatus further includes:
the configuration acquisition module is used for acquiring the current temperature value and the current configuration value of the temperature control unit after the wavelength of the light beam output by the laser is adjusted to the target wavelength value;
and the storage module is used for storing the current configuration value and storing the current temperature value as the configuration temperature of the temperature control unit.
Optionally, the wavelength adjusting apparatus, wherein the apparatus further includes:
the reading module is used for reading the stored current configuration value when the optical module is restarted;
and the control module is used for outputting the current configuration value to the temperature control unit so that the temperature control unit is at the configuration temperature.
An embodiment of the present invention further provides an optical module, including: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing a wavelength tuning method as in any one of the above.
Optionally, the optical module is a sparse wavelength division multiplexing CWDM optical module, or a local area network-wavelength division multiplexing LAN-WDM optical module.
An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores thereon a computer program, and when the computer program is executed by a processor, the computer program implements the steps in the wavelength adjustment method according to any one of the above.
At least one of the above technical solutions of the present invention has the following beneficial effects:
according to the wavelength adjusting method, the temperature of the temperature control unit is adjusted, so that the wavelength of the light beam output by the laser of the optical module can be adjusted to one preset wavelength value, a new transmission wavelength band is formed, a more optimized transmission wavelength interval is formed, definition of more wavelength ranges is achieved, and the problem that the wavelength of the optical module in the prior art is not adjustable or the wavelength is adjustable but the adjustment accuracy cannot meet the transmission requirement of larger wavelength capacity is solved.
Drawings
Fig. 1 is a diagram of an implementation architecture of an optical module applied to a base station deployed fronthaul network;
fig. 2 is a schematic flow chart of a wavelength adjustment method according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a wavelength adjustment device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an optical module according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The wavelength adjusting method is applied to an optical module, the optical module has the function of realizing photoelectric conversion, a sending end converts an electric signal into an optical signal, and a receiving end converts the optical signal into the electric signal after the optical signal is transmitted through an optical fiber.
Thus, an optical module comprises a transmitting device for optical signal transmission and a receiving device for optical signal reception. The emitting device is specifically as follows: an electric signal with a certain code rate is input and processed by an internal driving chip to drive a semiconductor laser LD or a light emitting diode LED to emit a modulated optical signal with a corresponding rate, and an optical power automatic control circuit is arranged in the semiconductor laser LD or the light emitting diode LED, so that the power of the output optical signal can be kept stable; the receiving device is specifically as follows: the optical signal with a certain code rate is converted into an electric signal by the optical detection diode after being input, and the electric signal with the corresponding code rate is output after passing through the preamplifier.
The optical module, which is a key component in the transmission system, determines the performance of the optical transmission system to a large extent. As shown in fig. 1, an implementation architecture diagram of a fronthaul network in which an optical module is applied to a base station deployment is shown, where the fronthaul network may be an open wavelength division system, and on an AAU side, an electrical signal output by the AAU is converted into an optical signal through the optical module and a passive WDM, and optical signals with different wavelengths sent by a plurality of optical modules are combined into one path and transmitted to a DU + CU side through an optical fiber; on the side of DU + CU, different optical information in one path of optical signal transmitted in the optical fiber of the network can be split through the active WDM and the optical module, and the optical information is converted into an electric signal and then transmitted to DU and/or CU.
According to the structure, the optical module becomes a key device for bearing the service in the wireless forward transmission network. It should be noted that the implementation architecture of the optical module shown in fig. 1 is only one example, and the system architecture to which the optical module is applied is not limited to be only one form, and each possible implementation architecture is not illustrated here.
In order to solve the problem that the wavelength of an optical module in the prior art is not adjustable or the wavelength is adjustable but the adjustment precision cannot meet the transmission requirement of larger wavelength capacity, an embodiment of the invention provides a wavelength adjustment method, which can realize further wavelength precision adjustment on the basis that the wavelength of a light beam output by the optical module after being started is in a preset range through a temperature adjustment mode, so as to form a more optimized transmission wavelength interval, realize the definition of more wavelength ranges, achieve an optimized transmission index, and realize the transmission with larger bandwidth and higher cost performance.
Specifically, as shown in fig. 2, the wavelength adjustment method according to the embodiment of the present invention is applied to an optical module, and the method includes:
s210, acquiring a current wavelength value of a laser output beam of the optical module;
s220, comparing the current wavelength value with at least two preset wavelength values, and selecting the preset wavelength value with the minimum absolute value of the difference value between the current wavelength value and the preset wavelength value as a target wavelength value;
and S230, adjusting the wavelength of the light beam output by the laser to the target wavelength value by adjusting the temperature of the temperature control unit of the optical module.
According to the wavelength adjusting method provided by the embodiment of the invention, the temperature of the temperature control unit is adjusted, so that the wavelength of the light beam output by the laser of the optical module can be adjusted to one preset wavelength value, a new transmission wavelength band is formed, a more optimized transmission wavelength interval is formed, the definition of more wavelength ranges is realized, the transmission instruction is optimized, and the effects of larger bandwidth and higher cost performance transmission are realized.
Optionally, in the Wavelength adjustment method according to the embodiment of the present invention, the applied optical module is a sparse Wavelength Division Multiplexing (CWDM) optical module, or a Local Area Network-Wavelength Division Multiplexing (LAN-WDM) optical module.
The CWDM optical module and the LAN-WDM optical module are optical modules with nonadjustable wavelengths in the conventional technology, and the optical module adopting the wavelength adjusting method of the embodiment of the invention monitors the wavelength value of the light beam output by the laser of the optical module, and can enable the optical module to form more and more optimized transmission wavelength intervals in a limited wavelength interval in a temperature adjusting mode so as to meet the requirements of transmission with larger wavelength capacity such as 5G forward transmission and the like.
It should be noted that the optical module using the wavelength adjustment method according to the embodiment of the present invention is not limited to be applicable to only the above-described type of optical module, and may also be applicable to a wavelength tunable optical module, for example, when the optical module is applied to a wavelength tunable optical module, further wavelength precision adjustment may be implemented by a temperature adjustment method to form a more optimized transmission wavelength interval.
In step S210, the current wavelength value of the laser beam output from the laser of the optical module can be obtained by measurement using the center frequency characteristic of the laser beam emitted from the optical module.
Further, in step S220, an adjusted target wavelength value is determined by comparing the current wavelength value measured in step S210 with at least two preset wavelength values. Specifically, the target wavelength value is a preset wavelength value with the smallest absolute value of a difference between the target wavelength value and the current wavelength value among the at least two preset wavelength values. That is, the center wavelength of the laser beam output by the laser needs to be adjusted to a preset wavelength value closer to the current wavelength value.
Optionally, the wavelength adjustment method according to the embodiment of the present invention further includes:
and determining an adjusting mode and an adjusted temperature value when the temperature of the temperature control unit is adjusted when the wavelength of the light beam output by the laser is adjusted to the target wavelength value.
Specifically, the target wavelength value is compared with the current wavelength value to determine a wavelength value range to be adjusted, and an adjustment mode and an adjusted temperature value when the temperature control unit is adjusted are determined according to the determined wavelength value range to be adjusted.
Optionally, the determining an adjustment manner and an adjusted temperature value when adjusting the wavelength of the light beam output by the laser to the target wavelength value and adjusting the temperature of the temperature control unit includes:
when the target wavelength value is larger than the current wavelength value, determining that the adjusting mode is heating adjustment;
when the target wavelength value is smaller than the current wavelength value, determining that the adjusting mode is cooling adjustment;
the adjusted temperature value is determined according to a predetermined correspondence between the temperature change and the wavelength value.
It should be noted that, according to the pre-test, it can be known that the temperature change of the temperature control unit in the optical module and the wavelength of the laser beam output by the laser have a direct ratio change relationship, for example, when the temperature of the temperature control unit is increased, the wavelength of the laser beam output by the laser is increased; when the temperature of the temperature control unit is reduced, the wavelength of the laser beam output by the laser is reduced.
Based on the above rule, by comparing the determined target wavelength value with the current wavelength value, the temperature adjustment mode of the temperature control unit can be determined first, and whether temperature rise adjustment or temperature fall adjustment is required is determined.
Further, the adjusted temperature value can be determined according to a corresponding relationship between the temperature change of the temperature control unit and the change of the wavelength value between the laser beams output by the laser, which is obtained through a pre-test.
For example, the correspondence relationship between the obtained temperature change of the temperature control unit and the wavelength value change of the laser beam output by the laser may be tested as follows: when the temperature of the temperature control unit is increased by 1 degree, the wavelength of the laser beam output by the laser is increased by 0.1nm, and when the temperature of the temperature control unit is decreased by 1 degree, the wavelength of the laser beam output by the laser is decreased by 0.1 nm. According to the corresponding relation obtained in advance, when the target wavelength value is larger than the current wavelength value and the difference value between the target wavelength value and the current wavelength value is 2nm, the temperature can be raised by controlling the temperature control unit, and the wavelength of the laser beam output by the laser is raised by 2nm under the condition of raising the temperature by 20 ℃; similarly, when the target wavelength value is smaller than the current wavelength value and the difference value between the target wavelength value and the current wavelength value is 2nm, the temperature control unit can be controlled to cool, and the wavelength of the laser beam output by the laser is reduced by 2nm under the condition of cooling by 20 ℃.
Therefore, according to the above correspondence, the adjustment method for adjusting the temperature of the temperature control unit and the temperature value to be adjusted can be determined, so that the wavelength of the light beam output by the laser can be adjusted from the current wavelength value to the target wavelength value.
Optionally, with the wavelength adjustment method according to the embodiment of the present invention, the method further includes:
after the wavelength of the light beam output by the laser is adjusted to the target wavelength value, acquiring the current temperature value and the current configuration value of the temperature control unit;
and storing the current configuration value, and storing the current temperature value as the configuration temperature of the temperature control unit.
Through the above process, the current temperature value and the current configuration value of the temperature control unit can be obtained and stored when the central wavelength of the light beam output by the laser of the optical module is the target wavelength value.
Further, the wavelength adjustment method further includes:
when the optical module is restarted, reading the stored current configuration value;
and outputting the current configuration value to the temperature control unit to enable the temperature control unit to be at the configuration temperature.
Based on the stored current temperature value and current configuration value of the temperature control unit, when the optical module is restarted, the current configuration value is output to the temperature control unit, so that the temperature of the temperature control unit can be used as the configuration temperature, the configuration of the sending wavelength of the optical module is completed, the central wavelength of the laser beam output by the laser is ensured to be a target wavelength value, and the optical module is enabled to enter a working state.
According to the above, when the wavelength adjusting method is applied to the optical module and the optical module is started for the first time, the wavelength of the light beam output by the laser of the optical module can be adjusted to one of the preset wavelength values by adjusting the temperature of the temperature control unit, so as to form a new transmission wavelength band; in addition, when the optical module is restarted, the configuration value when the wavelength is adjusted to the target wavelength value after the first startup is output to the temperature control unit, so that the central wavelength of the laser beam output by the laser is ensured to be kept at the target wavelength value.
Therefore, by the method, on the basis of reusing the electronic devices of the existing optical module, the optical module can be adjusted to the preset wavelength through a temperature control mode after being started, so that a more optimized transmission wavelength interval is obtained, the definition of more wavelengths is completed, the transmission index is optimized, and the effects of larger bandwidth and higher cost performance transmission are realized.
An embodiment of the present invention further provides a wavelength adjusting apparatus, which is applied to an optical module, and as shown in fig. 3, the apparatus includes:
a wavelength obtaining module 310, configured to obtain a current wavelength value of a laser output beam of the optical module;
a selecting module 320, configured to compare the current wavelength value with at least two preset wavelength values, and select a preset wavelength value with a smallest absolute value of a difference between the current wavelength value and the preset wavelength value as a target wavelength value;
and a temperature adjusting module 330, configured to adjust a wavelength of a light beam output by the laser to the target wavelength value by adjusting a temperature of a temperature control unit of the optical module.
According to the wavelength adjusting device provided by the embodiment of the invention, the temperature of the temperature control unit is adjusted, so that the wavelength of the light beam output by the laser of the optical module can be adjusted to one preset wavelength value, a new transmission wavelength band is formed, a more optimized transmission wavelength interval is formed, the definition of more wavelength ranges is realized, the optimized transmission indication is achieved, and the effects of larger bandwidth and higher cost performance transmission are realized.
Optionally, in the wavelength adjustment apparatus, the temperature adjustment module 330 is further configured to:
and determining an adjusting mode and an adjusted temperature value when the temperature of the temperature control unit is adjusted when the wavelength of the light beam output by the laser is adjusted to the target wavelength value.
Optionally, the wavelength adjusting apparatus, wherein the determining, by the temperature adjusting module 330, an adjusting manner and an adjusted temperature value when adjusting the wavelength of the light beam output by the laser to the target wavelength value and adjusting the temperature of the temperature control unit includes:
when the target wavelength value is larger than the current wavelength value, determining that the adjusting mode is heating adjustment;
when the target wavelength value is smaller than the current wavelength value, determining that the adjusting mode is cooling adjustment;
and determining the adjusted temperature value according to the corresponding relation between the predetermined temperature change and the wavelength value change.
Optionally, the wavelength adjusting apparatus, wherein the apparatus further includes:
a configuration obtaining module 340, configured to obtain a current temperature value and a current configuration value of the temperature control unit after the wavelength of the light beam output by the laser is adjusted to the target wavelength value;
a storage module 350, configured to store the current configuration value, and store the current temperature value as the configuration temperature of the temperature control unit.
Optionally, the wavelength adjusting apparatus, wherein the apparatus further includes:
a reading module 360, configured to read the stored current configuration value when the optical module is restarted;
a control module 370, configured to output the current configuration value to the temperature control unit, so that the temperature control unit is at the configuration temperature.
An embodiment of the present invention further provides an optical module, as shown in fig. 4, where the optical module includes a processor 401; and a memory 403 connected to the processor 401 through a bus interface 402, wherein the memory 403 is used for storing programs and data used by the processor 401 in executing operations, and the processor 401 calls and executes the programs and data stored in the memory 403.
The transceiver 404 is connected to the bus interface 402, and is configured to receive and transmit data under the control of the processor 401, and specifically, the processor 401 is configured to read a program in the memory 403, and perform the following processes:
acquiring a current wavelength value of a laser output beam of the optical module;
comparing the current wavelength value with at least two preset wavelength values, and selecting the preset wavelength value with the minimum absolute value of the difference value between the current wavelength value and the preset wavelength value as a target wavelength value;
and adjusting the wavelength of the light beam output by the laser to the target wavelength value by adjusting the temperature of a temperature control unit of the optical module.
Optionally, the light module, wherein the processor 401 is further configured to:
and determining an adjusting mode and an adjusted temperature value when the temperature of the temperature control unit is adjusted when the wavelength of the light beam output by the laser is adjusted to the target wavelength value.
Optionally, the optical module, wherein the processor 401, when determining to adjust the wavelength of the light beam output by the laser to the target wavelength value, includes an adjustment manner and an adjusted temperature value when adjusting the temperature of the temperature control unit, where the adjustment manner and the adjusted temperature value include:
when the target wavelength value is larger than the current wavelength value, determining that the adjusting mode is heating adjustment;
when the target wavelength value is smaller than the current wavelength value, determining that the adjusting mode is cooling adjustment;
and determining the adjusted temperature value according to the corresponding relation between the predetermined temperature change and the wavelength value change.
Optionally, the light module, wherein the processor 401 is further configured to:
after the wavelength of the light beam output by the laser is adjusted to the target wavelength value, acquiring the current temperature value and the current configuration value of the temperature control unit;
and storing the current configuration value, and storing the current temperature value as the configuration temperature of the temperature control unit.
Optionally, the light module, wherein the processor 401 is further configured to:
when the optical module is restarted, reading the stored current configuration value;
and outputting the current configuration value to the temperature control unit to enable the temperature control unit to be at the configuration temperature.
It should be noted that the optical module is a sparse WDM optical module or a LAN-WDM optical module.
Those skilled in the art will understand that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program includes instructions for executing part or all of the steps of the above methods; and the program may be stored in a readable storage medium, which may be any form of storage medium.
In addition, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the steps in the wavelength adjustment method according to any one of the above.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (7)
1. A wavelength adjustment method is applied to an optical module, and is characterized by comprising the following steps:
acquiring a current wavelength value of a laser output beam of the optical module;
comparing the current wavelength value with at least two preset wavelength values, and selecting the preset wavelength value with the minimum absolute value of the difference value between the current wavelength value and the preset wavelength value as a target wavelength value;
adjusting the wavelength of a light beam output by the laser to the target wavelength value by adjusting the temperature of a temperature control unit of the optical module;
after the wavelength of the light beam output by the laser is adjusted to the target wavelength value, acquiring the current temperature value and the current configuration value of the temperature control unit;
storing the current configuration value, and storing the current temperature value as the configuration temperature of the temperature control unit;
when the optical module is restarted, reading the stored current configuration value;
and outputting the current configuration value to the temperature control unit to enable the temperature control unit to be at the configuration temperature.
2. The wavelength adjustment method according to claim 1, further comprising:
and determining an adjusting mode and an adjusted temperature value when the temperature of the temperature control unit is adjusted when the wavelength of the light beam output by the laser is adjusted to the target wavelength value.
3. The method according to claim 2, wherein the determining an adjustment method and an adjusted temperature value for adjusting the temperature of the temperature control unit when adjusting the wavelength of the light beam output from the laser to the target wavelength value includes:
when the target wavelength value is larger than the current wavelength value, determining that the adjusting mode is heating adjustment;
when the target wavelength value is smaller than the current wavelength value, determining that the adjusting mode is cooling adjustment;
and determining the adjusted temperature value according to the corresponding relation between the predetermined temperature change and the wavelength value change.
4. A wavelength adjustment device applied to an optical module is characterized by comprising:
the wavelength acquisition module is used for acquiring the current wavelength value of the laser output light beam of the optical module;
the selection module is used for comparing the current wavelength value with at least two preset wavelength values and selecting the preset wavelength value with the minimum absolute value of the difference value between the current wavelength value and the preset wavelength value as a target wavelength value;
the temperature adjusting module is used for adjusting the wavelength of the light beam output by the laser to the target wavelength value by adjusting the temperature of the temperature control unit of the optical module;
the configuration acquisition module is used for acquiring the current temperature value and the current configuration value of the temperature control unit after the wavelength of the light beam output by the laser is adjusted to the target wavelength value;
the storage module is used for storing the current configuration value and storing the current temperature value as the configuration temperature of the temperature control unit;
the reading module is used for reading the stored current configuration value when the optical module is restarted;
and the control module is used for outputting the current configuration value to the temperature control unit so that the temperature control unit is at the configuration temperature.
5. A light module, comprising: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the wavelength adjustment method of any one of claims 1 to 3.
6. The optical module of claim 5, wherein the optical module is a sparse wavelength division multiplexing (CWDM) optical module or a local area network-wavelength division multiplexing (LAN-WDM) optical module.
7. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the wavelength adjustment method according to any one of claims 1 to 3.
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