CN107689840B - A kind of control method and optical module, optical network unit of optical module in optical network - Google Patents
A kind of control method and optical module, optical network unit of optical module in optical network Download PDFInfo
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- CN107689840B CN107689840B CN201710711875.6A CN201710711875A CN107689840B CN 107689840 B CN107689840 B CN 107689840B CN 201710711875 A CN201710711875 A CN 201710711875A CN 107689840 B CN107689840 B CN 107689840B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/08—Time-division multiplex systems
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Abstract
The embodiment of the invention discloses a kind of control method of optical module in optical network and optical modules, optical network unit, it include: that the instruction that do not shine is received when optical module powers on, then receive wavelength configuration-direct, it is instructed according to wavelength configuration and configures its operation wavelength under burst mode and standby wavelength, and then the instruction that shines is received, it is worked under burst mode according to the operation wavelength of configuration and standby wavelength.So, under optical network unit control, since optical module does not shine initially when powering on, only after configuring its good operation wavelength under burst mode and standby wavelength according to subsequently received wavelength configuration instruction, it can just shine under the control of instruction, it is worked under burst mode according to the wavelength of configuration, thus, it can effectively avoid the problem of wavelength crosstalk between the different ONU groups that the light of the wavelength not being configured may cause just is issued after optical module initial power-on using the technical solution in the embodiment of the present invention, it is ensured that the normal work of optical network unit.
Description
Technical field
The present invention relates to technical field of access networks more particularly to the control methods and light of a kind of optical module in optical network
Module, optical network unit.
Background technique
In access net field now, user terminal generallys use TWDM (Time and Wavelength Division
Multiplexed, wavelength-division and time-division multiplexing) technology.Specifically, as shown in Figure 1, user terminal includes multiple ONU (Optical
Network Unit, optical network unit) group, alternatively referred to as multiple groups optical channel, an ONU group corresponds to an OLT of distal end
(Optical Line Terminal, optical line terminal).Specifically, each ONU group in again may include multiple ONU (such as
Can be 32 or 64), it can be inserted into each ONU for luminous optical module.The hair of each ONU in an ONU group
Optical wavelength is all the same, they use time-multiplexed mode time-sharing work；And each not phase of the emission wavelength of the ONU of multiple ONU groups
Together, wavelength interval can be 0.8nm, be worked by the way of wavelength-division multiplex.In the upstream direction, each in an ONU group
The light that optical module is sent is gathered together via optical splitter, via AWG (Arrayed Waveguide Grating, Waveguide array
Grating) OLT of distal end is transmitted to by optical fiber after network screening wavelength.
In the prior art, the mode that the optical module in ONU generallys use bias current burst works, in order to avoid wavelength drift
The normal work influenced between different ONU groups is moved, an optical module all has an operation wavelength and a standby wavelength.One
In a ONU group, when the corresponding timing of ONU arrives, then the optical module work in the ONU burst_on state (i.e.
Working condition), issue the light that wavelength is operation wavelength；Correspondingly, the optical module work in other ONU in the ONU group exists
Burst_off state (i.e. standby mode) issues the light that wavelength is standby wavelength.
Due to the emission wavelength of optical module be it is tunable, when an optical module, it is added to different ONU groups, work
The unified operation wavelength of the ONU group and standby wavelength should be configured to by making wavelength and standby wavelength also.However, when a factory is matched
The optical module set, or originally work is when the optical module of other ONU groups is newly added to an ONU group, if the original of the optical module
The standby wavelength first configured may be identical as the operation wavelength of other ONU groups, thus in the optical module initial power-on, the light
The light that module is issued may be with the wavelength of light transmitted by the ONU optical module in other ONU groups in burst_on state
It is identical, thus will cause the wavelength crosstalk between different ONU groups, in this case, distally OLT meeting corresponding with the ONU group
Think the presence for having rogue ONU, the ONU that should be worked normally may be kicked offline, influences the normal work of the ONU group.
In conclusion a kind of control method of optical module in optical network is needed at present, to solve in the prior art
The problem of wavelength crosstalk of the optical module in the ONU of user of access network end side when powering between caused difference ONU group.
Summary of the invention
The present invention provides the control method and optical module, optical network unit of a kind of optical module in optical network, to solve
Wave when certainly the optical module in the prior art in the ONU of user of access network end side powers between caused difference ONU group
The problem of long crosstalk.
A kind of control method of optical module in optical network provided in an embodiment of the present invention, the optical network unit access
In array waveguide grating network, which comprises
The instruction that do not shine is received when optical module powers on；
The optical module receives wavelength configuration-direct, configures the optical module in burst mould according to wavelength configuration instruction
Operation wavelength and standby wavelength under formula；The light of the operation wavelength can by the array waveguide grating network, it is described to
The light of machine wavelength cannot pass through the array waveguide grating network；
The optical module receives the instruction that shines, and according to the operation wavelength of configuration and the standby wavelength in burst mould
It works under formula.
Based on same inventive concept, the embodiment of the present invention also provides a kind of optical module, and the optical module includes:
Transceiver module, for receiving the instruction that do not shine when the optical module powers on；
Configuration module determines that the optical module exists for receiving wavelength configuration-direct, and according to wavelength configuration instruction
Operation wavelength and standby wavelength under burst mode；The light of the operation wavelength can by the array waveguide grating network,
The light of the standby wavelength cannot pass through the array waveguide grating network；
Light emitting module is happening suddenly for receiving luminous instruction according to the operation wavelength of configuration and the standby wavelength
It works under mode.
The embodiment of the present invention also provides the control method of another optical module in optical network, and the optical network unit connects
Enter in array waveguide grating network, which comprises
Optical network unit issues the instruction that do not shine when optical module powers on；
The optical network unit issues wavelength configuration instruction, configures so that the optical module is instructed according to the wavelength configuration
Operation wavelength and standby wavelength of the optical module under burst mode；The light of the operation wavelength can pass through the array wave
The light of guide-lighting grid network, the standby wavelength cannot pass through the array waveguide grating network；
The optical network unit issues the instruction that shines, so that the optical module is according to the operation wavelength of configuration and described
Standby wavelength works under burst mode.
Based on same inventive concept, the embodiment of the present invention also provides a kind of optical network unit, the optical network unit packet
It includes:
Transceiver module, for issuing the instruction that do not shine when optical module powers on；
Configuration module is configured for issuing wavelength configuration instruction so that the optical module is instructed according to the wavelength configuration
Operation wavelength and standby wavelength of the optical module under burst mode；The light of the operation wavelength can pass through the array wave
The light of guide-lighting grid network, the standby wavelength cannot pass through the array waveguide grating network；
The transceiver module is also used to issue luminous instruction, so that the operation wavelength of the optical module according to configuration
It works under burst mode with the standby wavelength.
In the embodiment of the present invention, the instruction that do not shine is received when optical module powers on, wavelength configuration-direct is then received, according to this
Wavelength configuration instruction configures its operation wavelength under burst mode and standby wavelength, wherein the light of the operation wavelength can lead to
Array waveguide grating network is crossed, the light of the standby wavelength cannot pass through array waveguide grating network；And then the instruction that shines is received, and
It is worked under burst mode according to the operation wavelength of configuration and standby wavelength.In this way, under optical network unit control, due to optical mode
Block receives the instruction that do not shine when powering on, and does not shine initially, is only instructing configuration according to subsequently received wavelength configuration
Good optical module under burst mode operation wavelength and standby wavelength after, can just shine under the control of instruction, according to the work of configuration
Make wavelength and standby wavelength starts to shine under burst mode, thus, it can be effective using the technical solution in the embodiment of the present invention
Wavelength crosstalk between the different ONU groups for avoiding the light for just issuing the wavelength not being configured after optical module initial power-on from may cause
The problem of, it is ensured that the normal work of optical network unit.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without any creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is the system architecture diagram that the embodiment of the present invention is applicable in；
Fig. 2 is process signal corresponding to one of the embodiment of the present invention control method of optical module in optical network
Figure；
Fig. 3 is the structural schematic diagram of one of embodiment of the present invention optical module；
Fig. 4 is the structural schematic diagram of one of embodiment of the present invention optical network unit.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
One step it is described in detail, it is clear that described embodiment, only a part of the embodiment of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
The embodiment of the present invention is described in further detail with reference to the accompanying drawings of the specification.
The control method of optical module in optical network in the embodiment of the present invention is connect using time-division wavelength-division hybrid multiplex
In networking system, the system architecture diagram for the access net system that Fig. 1 is applicable in by the embodiment of the present invention, as shown in Figure 1, access net system
It include multiple ONU (optical network unit) group positioned at user terminal side in system, (optical link is whole by multiple OLT positioned at local side side
End), and the array waveguide grating AWG network of connection multiple ONU groups and multiple OLT.Wherein, every ONU in multiple ONU groups
Group corresponds to an OLT of local side side, and passes through optical fiber, AWG OLT connection corresponding with the ONU group.
Specifically, any ONU group in the multiple ONU group is correspondingly connected with a Spliter optical splitter, this is any
It may include multiple ONU in ONU group, moreover, can to connect the ONU group by optical fiber corresponding by any ONU in multiple ONU
Multiple ONU light issued is gathered together by Spliter optical splitter by the Spliter optical splitter, and then using
Spliter optical splitter connection array waveguide grating AWG network, by AWG network screening can by wavelength (i.e. from
The ONU in normal operating conditions is selected in multiple ONU of Spliter optical splitter connection), and finally issue ONU
Light is sent to the corresponding OLT of any ONU group by optical fiber.
In the embodiment of the present invention, any ONU issues the light of certain wavelength, Er Qieguang by the optical module being mounted in ONU
Module is worked after the power-up under burst mode.Specifically, the optical module installed in each ONU in an ONU group is matched
It is set to identical operation wavelength and standby wavelength, is worked between multiple optical modules using time-multiplexed mode, i.e., it is pre- at one
If in the time cycle, each optical module should when the timing of a certain ONU optical module arrives according to the timing time-sharing work of setting
ONU optical module is in running order, issues the light that wavelength is operation wavelength, conversely, then ONU optical module is in standby, hair
Wavelength is the light of standby wavelength out, so that at any one time, although all optical modules in the ONU group shine, having
And an only optical module job is in operation wavelength.
In the embodiment of the present invention, the quantity of included ONU group in access net system, and include in any ONU group
The quantity of ONU can carry out according to actual needs equipment by those skilled in the art, be not particularly limited herein, optionally,
The quantity for the ONU for including in any ONU group can be 32 or 62, or other numerical value.
Based on system architecture described above, Fig. 2 is a kind of luminescent method of optical module provided in an embodiment of the present invention
Corresponding flow diagram, as shown in Fig. 2, including the following steps S201 to step S206:
Step S201: optical network unit issues the instruction that do not shine when optical module powers on；
Step S202: when optical module powers on, the instruction that do not shine is received；
Step S203: the optical network unit issues wavelength configuration instruction；
Step S204: the optical module receives wavelength configuration-direct, and configures the light according to wavelength configuration instruction
Operation wavelength and standby wavelength of the module under burst mode；
Step S205: the optical network unit issues the instruction that shines；
Step S206: the optical module receives the instruction that shines, and according to the operation wavelength of configuration and the standby wave
It grows and works under burst mode.
In this way, since optical module receives the instruction that do not shine when powering on, not sent out initially under the control of optical network unit
Light is only configuring operation wavelength of the optical module under burst mode and standby according to subsequently received wavelength configuration instruction
It after wavelength, can just shine under the control of instruction, start to shine under burst mode according to the operation wavelength of configuration and standby wavelength,
Thus, the wave not being configured is just issued after can effectively avoid optical module initial power-on using the technical solution in the embodiment of the present invention
Between the different ONU groups that long light may cause the problem of wavelength crosstalk, it is ensured that the normal work of optical network unit.
In step S201 and step S202, optical network unit (i.e. ONU) is sent when optical module is powered on to the optical module
Shine instruction, the optical module receive this shine after, then after the power-up first do not shine.Specifically, ONU can pass through a variety of sides
Formula issues the instruction that do not shine in optical module initial power-on.Such as ONU can be used through the disable in upper computer software
Function closes the bias current of the optical module, controls the optical module and does not shine, to issue immediately after avoiding the optical module from powering on
The light for the wavelength not being configured, and influence the work of other ONU groups.
In turn, in step S203 and step S204, ONU sends wavelength configuration-direct to optical module, which refers to
Including operation wavelength and standby wavelength corresponding to the ONU group where the ONU in order.The wave of ONU transmission is received in optical module
After long configuration-direct, according to the wavelength configuration instruct, configure its own operation wavelength and standby wavelength.
Specifically, the different ONU in same ONU group use same work since optical module work is under burst mode
Wavelength and standby wavelength, and worked using time-multiplexed mode, thus, when optical module is in the different conditions under burst mode
When the wavelength that is issued it is also different.In the embodiment of the present invention, when optical module burst_on (i.e. in running order), wave is issued
The light of a length of operation wavelength, other optical modules in the ONU group are then burst_off (being in standby), issue wave
The light of a length of standby wavelength；Similarly, when the optical module is at burst_off (being in standby), it is standby for issuing wavelength
The light of wavelength, and in other optical modules in the ONU group there are an optical module be burst_on (it is i.e. in running order, hair
Wavelength is the light of operation wavelength out.Thus, optical module receive wavelength configuration instruction after, according to wavelength configuration instruct in work
Make wavelength and standby wavelength configuration for the emission wavelength of itself, i.e., sending when configuring emission wavelength in burst_on state
The light of operation wavelength issues the light of standby wavelength when in burst_off.
In specific application scenarios, ONU can inform ONU group corresponding work of the optical module where it in several ways
Wavelength and standby wavelength, such as, ONU can be informed by IIC mode the optical module operation wavelength and standby wavelength, Huo Zheye
Other modes can be used, the present invention is not particularly limited this.
In step S205, after determining the emission wavelength configuration successful of optical module, the transmission of Cai Huixiang optical module is used for ONU
Shine instruction, so that optical module works under burst mode according to configured operation wavelength and standby wavelength.
In the embodiment of the present invention, ONU can send above-mentioned luminous instruction to optical module in several ways, such as, it can be with
By the enable function in upper computer software, the mode of the bias current of the optical module is opened, to control optical mode BOB(beginning of block) hair
Light.
In step S206, after optical module receives the luminous instruction of ONU transmission, according to configuration work wavelength and standby wave
It grows to work under burst mode and specifically include:
Other ONU and ONU operation wavelength having the same and standby wavelength in ONU group as where in the ONU,
Thus, optical module can issue wave according to working sequence of the ONU in the ONU group where it, when being in the working condition
The light of a length of operation wavelength issues the light that wavelength is standby wavelength after switching to standby mode by working condition.
For example, if in access net system including N number of ONU group (N is the integer more than or equal to 1).If ONU group therein
3 operation wavelength is λ3, standby wavelength is λ5.After a certain optical module is inserted into a certain ONU in ONU group 3, which can lead to first
The disable function of crossing upper computer software closes the bias current of the optical module, and the work of the optical module is informed by IIC mode
Making wavelength is λ3, then the standby wavelength of the optical module can be automatically configures as λ5.After configuration is complete, which will pass through host computer
The enable function of software, opens the bias current of the optical module, so that the ONU optical module is shone, if at this time at the optical module
In burst_on state, then the optical module can work in λ3Wavelength, if being in burst_off state, optical module work
In λ5Wavelength.
Based on same inventive concept, the embodiment of the present invention also provides a kind of optical module 300, and the optical module 300 includes:
Transceiver module 301, for receiving the instruction that do not shine when the optical module powers on；
Configuration module 302 determines the optical module for receiving wavelength configuration-direct, and according to wavelength configuration instruction
Operation wavelength and standby wavelength under burst mode；The light of the operation wavelength can pass through the array waveguide grating net
The light of network, the standby wavelength cannot pass through the array waveguide grating network；
Light emitting module 303, for receiving luminous instruction, according to the operation wavelength of configuration and the standby wavelength prominent
It works under hair mode.
Optionally, the light emitting module 303 is specifically used for:
Under burst mode, the optical module issues the light of the operation wavelength, is locating when being in the working condition
When standby mode, the light of the standby wavelength is issued.
Based on same inventive concept, the embodiment of the present invention also provides a kind of optical network unit 400, the optical network unit
400 include:
Transceiver module 401, for issuing the instruction that do not shine when optical module powers on；
Configuration module 402, for issuing wavelength configuration instruction, so that the optical module is matched according to wavelength configuration instruction
Set operation wavelength and standby wavelength of the optical module under burst mode；
The transceiver module 401, is also used to issue luminous instruction, so that the operating wave of the optical module according to configuration
The long and standby wavelength works under burst mode.
By above content it can be seen that
In the embodiment of the present invention, the instruction that do not shine is received when optical module powers on, wavelength configuration-direct is then received, according to this
Wavelength configuration instruction configures its operation wavelength under burst mode and standby wavelength, wherein the light of the operation wavelength can lead to
Array waveguide grating network is crossed, the light of the standby wavelength cannot pass through array waveguide grating network；And then the instruction that shines is received, and
It is worked under burst mode according to the operation wavelength of configuration and standby wavelength.In this way, under optical network unit control, due to optical mode
Block receives the instruction that do not shine when powering on, and does not shine initially, is only instructing configuration according to subsequently received wavelength configuration
Good optical module under burst mode operation wavelength and standby wavelength after, can just shine under the control of instruction, according to the work of configuration
Make wavelength and standby wavelength starts to shine under burst mode, thus, it can be effective using the technical solution in the embodiment of the present invention
Wavelength crosstalk between the different ONU groups for avoiding the light for just issuing the wavelength not being configured after optical module initial power-on from may cause
The problem of, it is ensured that the normal work of optical network unit.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the meter of computer usable program code that the present invention, which can be used at one or more,
The computer journey implemented in calculation machine usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of sequence product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The function of being specified in present one process of flow chart or more than two one box of process and/or block diagram or more than two boxes
Device.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
The manufacture of device is enabled, which realizes in one side of one process of flow chart or more than two processes and/or block diagram
The function of being specified in frame or more than two boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one process of flow chart or more than two processes and/or box
The step of function of being specified in one box of figure or more than two boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (6)
1. a kind of control method of optical module in optical network, which is characterized in that the optical network unit accesses Waveguide array
In raster grid, which comprises
The instruction that do not shine is received when optical module powers on；
The optical module receives wavelength configuration-direct, configures the optical module under burst mode according to wavelength configuration instruction
Operation wavelength and standby wavelength；The light of the operation wavelength can pass through the array waveguide grating network, the standby wave
Long light cannot pass through the array waveguide grating network；
The optical module receives the instruction that shines, and according to the operation wavelength of configuration and the standby wavelength under burst mode
Work.
2. the method according to claim 1, wherein operation wavelength and standby wave of the optical module according to configuration
It grows and works under burst mode, comprising:
Under burst mode, the optical module be in the working condition when, issue the light of the operation wavelength, in
When machine state, the light of the standby wavelength is issued.
3. a kind of optical module, which is characterized in that the optical module includes:
Transceiver module, for receiving the instruction that do not shine when the optical module powers on；
Configuration module determines that the optical module is happening suddenly for receiving wavelength configuration-direct, and according to wavelength configuration instruction
Operation wavelength and standby wavelength under mode；The light of the operation wavelength can be described standby by array waveguide grating network
The light of wavelength cannot pass through the array waveguide grating network；
Light emitting module, for receiving luminous instruction, according to the operation wavelength of configuration and the standby wavelength in burst mode
Lower work.
4. optical module according to claim 3, which is characterized in that the light emitting module is specifically used for:
Under burst mode, the optical module be in the working condition when, issue the light of the operation wavelength, in
When machine state, the light of the standby wavelength is issued.
5. a kind of control method of optical module in optical network, which is characterized in that the optical network unit accesses Waveguide array
In raster grid, which comprises
Optical network unit issues the instruction that do not shine when optical module powers on；
The optical network unit issues wavelength configuration instruction, so that the optical module is according to wavelength configuration instruction configuration
Operation wavelength and standby wavelength of the optical module under burst mode；The light of the operation wavelength can pass through the Waveguide array light
The light of grid network, the standby wavelength cannot pass through the array waveguide grating network；
The optical network unit issues the instruction that shines, so that the optical module is according to the operation wavelength of configuration and described standby
Wavelength works under burst mode.
6. a kind of optical network unit, which is characterized in that the optical network unit includes:
Transceiver module, for issuing the instruction that do not shine when optical module powers on；
Configuration module, for issuing wavelength configuration instruction, so that the optical module is according to wavelength configuration instruction configuration
Operation wavelength and standby wavelength of the optical module under burst mode；
The transceiver module is also used to issue luminous instruction, so that the operation wavelength and institute of the optical module according to configuration
Standby wavelength is stated to work under burst mode.
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| CN108768746B (en) * | 2018-06-19 | 2021-10-01 | 上海市共进通信技术有限公司 | Self-adaptive sharing configuration method of ONT (optical network terminal) in 10G (gigabit) optical network system |
| CN114967512A (en) * | 2021-02-23 | 2022-08-30 | 华为技术有限公司 | Power supply control method, device and equipment |
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|---|---|---|---|---|
| CN102104812A (en) * | 2009-12-22 | 2011-06-22 | 华为技术有限公司 | Method for automatically selecting wavelength and optical module |
| CN106330328A (en) * | 2015-07-10 | 2017-01-11 | 青岛海信宽带多媒体技术有限公司 | Optical module and optical signal output control method |
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| US20150063812A1 (en) * | 2013-08-27 | 2015-03-05 | Calix, Inc. | Compensator for wavelength drift due to variable laser injection current and temperature in a directly modulated burst mode laser |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104812A (en) * | 2009-12-22 | 2011-06-22 | 华为技术有限公司 | Method for automatically selecting wavelength and optical module |
| CN106330328A (en) * | 2015-07-10 | 2017-01-11 | 青岛海信宽带多媒体技术有限公司 | Optical module and optical signal output control method |
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