CN110086538B - Auto-negotiation module, network system and method for wavelength matching of same-wavelength optical modules - Google Patents
Auto-negotiation module, network system and method for wavelength matching of same-wavelength optical modules Download PDFInfo
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- H—ELECTRICITY
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
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Abstract
The invention provides an auto-negotiation module, a network system and a method for wavelength matching of optical modules with the same wavelength. The module comprises a comb filter, an optical receiver, an emitted light monitor, a received light monitor and a control circuit; the incident light port and the emergent light port of the comb filter are on the same plane with the emitted light of the laser; the transmitting light monitor, the receiving light monitor, the light receiver and the comb filter are all connected through waveguides; the control circuit is connected with the light receiver, the emitted light monitor and the output electrode of the received light monitor.
Description
Technical Field
The invention relates to the field of optical fiber communication, in particular to an auto-negotiation module, a network system and a method for wavelength matching of optical modules with the same wavelength.
Background
In recent years, with the gradual deepening of the deployment of the 5G network, the number of base stations is more and more, the sites are more and more dense, and higher requirements are put forward on a wireless bearer network. At present, the mobile load is mainly in a point-to-point optical fiber direct connection mode, and a series of difficult problems of serious optical fiber resource consumption, difficult capacity expansion, high construction and operation cost, easy installation error and the like exist. In order to better use the existing optical fiber resources and reduce the installation and operation and maintenance costs, operators have put forward the demand of single-fiber bidirectional optical modules in the same band.
The traditional same-wavelength optical module has the same uplink and downlink wavelengths, can not effectively separate uplink light from downlink light in a filtering mode, has serious optical crosstalk and larger optical loss, and easily causes the problems of system working disorder and even paralysis.
Disclosure of Invention
The invention provides an auto-negotiation module, a network system and a method for wavelength matching of optical modules with the same wavelength, which can monitor the light splitting states of uplink and downlink in a comb filter by defining the distance between the wavelength of the uplink and the wavelength of the downlink in the same wavelength, enable communication units of uplink and downlink units to automatically negotiate and match, enable one module to automatically change the wavelength to the adjacent wavelength when the uplink and the downlink light have the same wavelength, complete the wavelength matching of the uplink and the downlink, establish the communication between the uplink and the downlink, and effectively avoid the crosstalk of the uplink and the downlink light, thereby causing the problems of disordered work and even paralysis of the system. Meanwhile, the uplink and downlink transmission adopts the same optical module, so that the module variety is reduced, the installation and operation and maintenance cost is reduced, the scheme is stable and reliable, and the competitiveness is high.
The technical solution of the invention is as follows:
an auto-negotiation module for wavelength matching of optical modules with the same wavelength comprises a comb filter, an optical receiver, an emitting optical monitor, a receiving optical monitor and a control circuit; the incident light port and the emergent light port of the comb filter are on the same plane with the emitted light of the laser; the transmitting light monitor, the receiving light monitor, the light receiver and the comb filter are all connected through waveguides; the control circuit is connected with the light receiver, the emitted light monitor and the output electrode of the received light monitor, and receives signals generated by the light receiver, the emitted light monitor and the output electrode of the received light monitor.
Meanwhile, the invention also provides a network system for realizing the wavelength auto-negotiation pairing of the same-wavelength optical modules, which comprises a first communication unit and a second communication unit, wherein the first communication unit and the second communication unit are connected through an optical network to realize communication; the first communication unit and the second communication unit both comprise a laser and an auto-negotiation module matched with the laser, and the auto-negotiation module comprises a comb filter, an optical receiver, an emitted light monitor, a received light monitor and a control circuit; the incident light port and the emergent light port of the comb filter are on the same plane with the emitted light of the laser; the transmitting light monitor, the receiving light monitor, the light receiver and the comb filter are all connected through waveguides; the control circuit is connected with the light receiver, the emitted light monitor and the output electrode of the received light monitor, and receives signals generated by the light receiver, the emitted light monitor and the output electrode of the received light monitor; the laser and comb filter have at least two sets of tuning parameters.
Further, the transmitting light monitor and the receiving light monitor are arranged on one side of the comb filter, and the light receiver is arranged on the other side of the comb filter.
In addition, the invention provides a method for realizing wavelength auto-negotiation pairing of optical modules with the same wavelength, which comprises the following steps:
1) curing parameters of any two communication units at wavelength point A and wavelength point B
1.1) tuning the emission wavelength of a laser matched with an auto-negotiation module to a wavelength point A, monitoring the current change of an emission light monitor, simultaneously tuning the temperature point of a comb filter, and recording the tuning parameters of the laser and the comb filter when the current of a light monitor to be emitted is 0 or close to 0 and is minimum;
1.2) tuning the emission wavelength of the laser to a wavelength point B, monitoring the current change of the emission light monitor, simultaneously tuning the temperature point of the comb filter, and recording the tuning parameters of the laser and the comb filter again when the current of the emission light monitor is 0 or close to 0 and minimum;
1.3) selecting parameters of the point A or the point B, configuring an auto-negotiation module, and solidifying the parameters;
2) negotiation between any two post-cure auto-negotiation modules
2.1) the laser of the first communication unit emits laser with the wavelength A;
the laser of the first communication unit emits laser with the wavelength A, the laser enters the comb filter of the first communication unit, and the response current of the optical monitor of the first communication unit is 0;
2.2) the second communication unit receives the laser with the transmitting wavelength A
The laser passing through the comb filter of the first communication unit enters the comb filter of the second communication unit through the optical network, after the laser is split by the comb filter of the second communication unit, X% of laser with the wavelength A enters a receiving light monitor of the second communication unit to generate a response current, and the response current is monitored by a control circuit of the second communication unit;
2.3) monitoring the response current of the optical receiver of the second communication unit;
if the initial wavelength of the laser of the second communication unit is B, the comb filter of the second communication unit guides 1-X% of laser with the wavelength A into a light receiver waveguide of the second communication unit, a light receiver of the second communication unit generates a response current and is monitored by a control circuit of the second communication unit, the emission wavelength of the first communication unit and the emission wavelength of the second communication unit are successfully paired, and the step 4) is carried out;
if the initial wavelength of the laser of the second communication unit is A, leading 1-X% of the laser of the A wavelength into a light emitter waveguide of the second communication unit by a comb filter of the second communication unit, not generating a response current by a light receiver of the second communication unit, monitoring by a control circuit of the second communication unit, and leading the transmission wavelength of the first communication unit and the transmission wavelength of the second communication unit to be unsuccessfully matched, and entering step 3);
3) randomly adjusting the emission wavelength;
tuning and switching the emission wavelength of the first communication unit laser or the second communication unit laser to enable the emission wavelength of the first communication unit laser or the second communication unit laser to be different, simultaneously switching the first communication unit comb filter or the second communication unit comb filter to a corresponding wavelength channel, and repeating the steps 2.1) to 2.3);
4) the first communication unit and the second communication unit realize normal traffic.
Further, the laser emitted by the first communication unit laser or the second communication unit laser includes a specific code pattern related to the wavelength. The first communication unit and the second communication unit respectively transmit specific code patterns related to wavelengths, the transmitted light of the first communication unit enters the second communication unit, X% light enters a receiving light monitor of the second communication unit to generate response current, the response current is monitored by a control circuit of the second communication unit, and the interior of the second communication unit judges whether the transmitted wavelengths of the communication units at two ends of the equipment are successfully paired according to the received code patterns and by comparing the transmitted code patterns. Similarly, the interior of the first communication unit judges whether the transmitting wavelengths of the communication units at two ends of the equipment are successfully matched or not according to the received code patterns and compares the transmitting code patterns of the first communication unit with the transmitting wavelength of the second communication unit, if the matching is unsuccessful, the transmitting code patterns are automatically switched after the lasers in the first communication unit and the second communication unit are randomly delayed, each unit judges whether the matching is successful or not again according to the received code patterns, and after the matching is successful, normal communication is realized.
Further, the wavelength a is a ± n × T, the wavelength B is B ± n × T, where a is a specific wavelength, B is a specific wavelength, and a ≠ B; n is a positive integer, i.e., n is 1, 2, 3 … ∞; t is the periodic interval of the wavelength.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention effectively prevents the crosstalk problem between the received optical signal and the emitted optical signal by defining the distance between the uplink wavelength and the downlink wavelength in the optical module and by the characteristics of the comb filter, realizes optical transmission between the same wavelengths, and has smaller device volume and simple assembly process.
2. The invention monitors the states of the emitted light and the received light by arranging the monitoring port in the comb filter and identifies the wavelength states of the optical modules at the two ends of the system.
3. The invention can realize the auto-negotiation mechanism of the optical modules at the two ends of the system, and automatically realize the wavelength pairing when the wavelengths of the optical modules at the two ends are the same, thereby bringing great convenience to the operation and maintenance of the network system.
Drawings
FIG. 1 is a schematic diagram of an auto-negotiation module paired with a wavelength of a wavelength optical module according to the present invention;
FIG. 2 is a schematic diagram of an auto-negotiation network system paired with wavelength of a wavelength optical module according to the present invention;
fig. 3 is a flow chart of the optical module wavelength auto-negotiation process according to the present invention.
Reference numerals: 1-optical receiver, 2-optical transmitter monitor, 3-optical receiver monitor, 4-comb filter, 5-laser, 6-optical receiver waveguide, 7-optical transmitter waveguide.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
the invention provides an auto-negotiation scheme for wavelength matching of a same-wavelength optical module, which has the working principle that whether matching is successful or not is automatically judged by a control circuit through monitoring the change and combination of response currents among an optical receiver, a receiving optical monitor and a transmitting optical monitor, if matching is unsuccessful, a channel of a laser and a comb filter of one communication unit is automatically tuned and switched to another initialization channel, auto-negotiation is carried out again, matching is successful, and normal communication of the same wavelength is realized.
As shown in fig. 1, the auto-negotiation module paired with the wavelength of the wavelength-shared optical module provided by the present invention includes a comb filter 4, an optical receiver 1, an optical transmitter and receiver monitor 2, an optical receiver and receiver monitor 3, and a control circuit; the incident light port and the emergent light port of the comb filter 4 are on the same plane with the emitted light of the laser 5; the transmitting optical monitor 2, the receiving optical monitor 3, the optical receiver 1 and the comb filter 4 are all connected through waveguides; the control circuit is connected with the output electrodes of the light receiver 1, the emitted light monitor 2 and the received light monitor 3 and receives the signals generated by the output electrodes. Specifically, the light emitting monitor 2 and the light receiving monitor 3 are disposed on one side of the comb filter 4, and the light receiving unit 1 may be disposed on the other side of the comb filter 4
The emission wavelength of the laser 5 can be tuned within a certain passband of the comb filter 4, i.e. the emission wavelength of the laser 5 can be tuned from wavelength a to wavelength B or from wavelength B to wavelength a. The receiving wavelength of the optical receiver 1 is within a certain stop band of the comb filter 4, and the receiving wavelength of the optical receiver 1 is matched with the transmitting wavelength, that is, when the transmitting wavelength is a, the receiving wavelength is B, and when the transmitting wavelength is B, the receiving wavelength is a. The filter wavelength of the comb filter 4 is tunable to allow transmission of the emission wavelength of the laser 5, and the filter wavelength of the comb filter 4 is tunable by temperature and corresponds to the emission wavelength of the emission laser 5. The receive supervisory port of the comb filter 434 is X% of the main optical path splitting ratio of the comb filter 4, where 0 < X < 100.
As shown in fig. 2, based on the auto-negotiation module, the present invention further provides a network system for implementing auto-negotiation pairing of wavelengths of optical modules with the same wavelength, including a first communication unit and a second communication unit, where the first communication unit and the second communication unit may be in a group or multiple groups, and the first communication unit and the second communication unit implement communication through optical network connection; the first communication unit and the second communication unit both comprise a laser 5 and an auto-negotiation module matched with the laser 5, wherein the auto-negotiation module comprises a comb filter 4, an optical receiver 1, an emitting optical monitor 2, a receiving optical monitor 3 and a control circuit; the incident light port and the emergent light port of the comb filter 4 are on the same plane with the emitted light of the laser 5; the transmitting optical monitor 2, the receiving optical monitor 3, the optical receiver 1 and the comb filter 4 are all connected through waveguides; the control circuit is connected with the output electrodes of the light receiver 1, the emitted light monitor 2 and the received light monitor 3 and receives the signals generated by the output electrodes. The waveguide between the comb filter 4 and the optical receiver 1 is an optical receiver waveguide 6; the optical waveguide between the comb filter 4 and the laser 5 is an optical transmitter waveguide 7, the laser 5 and the comb filter 4 having at least two sets of tuning parameters.
As shown in fig. 3, the present invention provides a method for implementing auto-negotiation pairing of wavelengths of optical modules with the same wavelength, which includes tuning the emission wavelength of a laser to a specified wavelength point, monitoring the current variation of the emission light monitor, tuning the temperature point of a comb filter, and recording the tuning parameters of the laser and the comb filter through module software when the current of the optical monitor to be emitted is 0 or close to 0 and minimum. Tuning the emission wavelength to a wavelength which is deviated from the specified wavelength by a certain fixed value again, monitoring the current change of the emission light monitor, tuning the temperature point of the comb filter, recording the tuning parameters of the laser and the comb filter through module software when the current of the light monitor to be emitted is 0 or close to 0 and is minimum, and recording two parameters of the emission wavelength point by the optical module (auto-negotiation module).
After the emission wavelength is specified, two optional initial working wavelengths (such as a and B) exist in an optical module (auto-negotiation module), the emission wavelength set initially can be a or B, a communication link can be established only by transmitting an a-wavelength optical module and a B-wavelength optical module at two ends in equipment communication in a paired mode, and the optical modules at two ends have the possibility of initializing to a wavelength channel at the same time, so that a wavelength auto-negotiation mechanism is needed to ensure the normal establishment of the communication link.
A first auto-negotiation module and a second auto-negotiation module are respectively arranged at two ends of the device, the first communication unit comprises a first auto-negotiation module and a first laser, the second communication unit comprises a second auto-negotiation module and a second laser, and the first auto-negotiation module comprises a first comb filter, a first optical receiver, a first transmitting optical monitor, a first receiving optical monitor and a first control circuit; the incident light port and the emergent light port of the first comb filter are on the same plane with the emitted light of the first laser; the first transmitting light monitor, the first receiving light monitor, the first light receiver and the first comb filter are all connected through waveguides; the first control circuit is connected with the output electrodes of the first light receiver, the first transmitting light monitor and the first receiving light monitor and receives signals generated by the first light receiver, the first transmitting light monitor and the first receiving light monitor; the second auto-negotiation module comprises a second comb filter, a second optical receiver, a second transmitting optical monitor, a second receiving optical monitor and a second control circuit; the incident light port and the emergent light port of the second comb filter are on the same plane with the emitted light of the second laser; the second transmitting optical monitor, the second receiving optical monitor, the second optical receiver and the second comb filter are all connected through waveguides; the second control circuit is connected with the output electrodes of the second light receiver, the second transmitting light monitor and the second receiving light monitor and receives signals generated by the second light receiver, the second transmitting light monitor and the second receiving light monitor.
Assuming that the wavelength of light emitted by the first laser is a, a light enters a first comb filter of the first auto-negotiation module, at this time, the response current of the first light monitor is 0, the a light enters a second comb filter of the second auto-negotiation module through the optical interface and the optical network, first, after being split by the second comb filter, X% of the wavelength light enters a second receiving light monitor of the second auto-negotiation module, generates a response current, and is monitored by a second control circuit of the second auto-negotiation module, if the initial wavelength B of the second auto-negotiation module at this time, the second comb filter guides 1-X% of the a wavelength light into an optical receiver waveguide of the second auto-negotiation module, enters a second optical receiver of the second auto-negotiation module, the second optical receiver generates a response current, and is monitored by a second control circuit of the second auto-negotiation module, the first communication unit and the second communication unit are successfully paired, and normal passing can be realized.
If the initial wavelength of the second communication unit is also a, the second comb filter guides 1-X% of the wavelength a laser into the optical transmitter waveguide of the second auto-negotiation module, the second optical receiver cannot receive the wavelength a laser emitted by the first auto-negotiation module, the response current is 0, and the second optical receiver is monitored by the second control circuit of the second auto-negotiation module, and at this time, the first communication unit and the second communication unit are not successfully paired. At this time, the emission wavelength of the first communication unit or the second communication unit is randomly adjusted to B, that is, the first laser or the second laser is tuned and switched to B, the first comb filter or the second comb filter is correspondingly switched to the B wavelength channel, the first auto-negotiation module and the second auto-negotiation module perform the auto-negotiation mechanism of the previous step again, and the pairing is successful, so that the normal communication is realized.
The wavelengths a and B are not single fixed values but periodic, i.e. a ± n × T, a being a specific wavelength; n is a positive integer, i.e., n is 1, 2, 3 … ∞; t is the periodic interval of the wavelength; b is a specific wavelength, n is a positive integer, namely n is 1, 2, 3 … infinity; t is the periodic interval of the wavelength.
The invention also provides a second auto-negotiation method, wherein a first communication unit and a second communication unit are respectively arranged at two ends of the equipment, and specific code patterns related to the wavelength are respectively transmitted according to the preset transmitting wavelength. Whether the emitting light wavelength of the first laser is A or B, the emitting light enters the second comb filter of the second auto-negotiation module through the optical interface and the optical network, wherein X% of the light enters the second receiving light monitor of the second auto-negotiation module to generate a response current, and the response current is monitored by the second control circuit of the second auto-negotiation module. And the second control circuit acquires the code pattern transmitted by the first communication unit according to the response current and compares whether the code pattern is consistent with the transmission code pattern of the second communication unit. If the two communication units are not consistent, the emission wavelengths of the two communication units are different, and the pairing is successful; if the two communication units are consistent, the emission wavelengths of the two communication units are the same, and the pairing is unsuccessful. At this time, the transmission wavelengths of the first communication unit and the second communication unit do not need to be changed, only the transmission code patterns of the first communication unit or the second communication unit need to be randomly adjusted, the auto-negotiation mechanism of the previous step is carried out again, and after the pairing is successful, the first communication unit or the second communication unit adjusts the transmission wavelength of the first communication unit or the second communication unit according to the transmission code patterns of the first communication unit or the second communication unit, so that normal communication is realized.
See fig. 2 for a table of combinations of states in a communication link;
auto-negotiation link state combination table
Claims (7)
1. An auto-negotiation module for wavelength pairing of optical modules of the same wavelength, characterized in that: comprises a comb filter (4), an optical receiver (1), an emitted light monitor (2), a received light monitor (3) and a control circuit;
the incident light port and the emergent light port of the comb filter (4) and the emitted light of the laser (5) are on the same plane; the filter wavelength of the comb filter (4) is tunable, and the laser (5) and the comb filter (4) have at least two sets of tuning parameters;
the transmitting light monitor (2), the receiving light monitor (3), the light receiver (1) and the comb filter (4) are connected through waveguides;
the control circuit is connected with output electrodes of the optical receiver (1), the emitted light monitor (2) and the received light monitor (3) and receives signals generated by the output electrodes;
the control circuit monitors the change and combination of response current among the optical receiver (1), the receiving optical monitor (3) and the transmitting optical monitor (2) to monitor the uplink and downlink light splitting states of the comb filter (4), automatically judges whether the pairing is successful, automatically tunes and switches the channels of the laser (5) and the comb filter (4) to another channel if the pairing is unsuccessful, performs auto-negotiation again, and succeeds in pairing, so that normal communication with the wavelength is realized.
2. The co-wavelength optical module wavelength paired auto-negotiation module of claim 1, wherein: the emitting light monitor (2) and the receiving light monitor (3) are arranged on one side of the comb filter (4), and the light receiver (1) is arranged on the other side of the comb filter (4).
3. A network system for realizing wavelength auto-negotiation pairing of optical modules with the same wavelength comprises a first communication unit and a second communication unit, wherein the first communication unit and the second communication unit are connected through an optical network to realize communication; the method is characterized in that: the first communication unit and the second communication unit both comprise a laser (5) and an auto-negotiation module matched with the laser (5), wherein the auto-negotiation module comprises a comb filter (4), an optical receiver (1), an emitted light monitor (2), a received light monitor (3) and a control circuit;
the incident light port and the emergent light port of the comb filter (4) and the emitted light of the laser (5) are on the same plane; the filter wavelength of the comb filter (4) is tunable, and the laser (5) and the comb filter (4) have at least two sets of tuning parameters;
the transmitting light monitor (2), the receiving light monitor (3), the light receiver (1) and the comb filter (4) are connected through waveguides;
the control circuit is connected with output electrodes of the optical receiver (1), the emitted light monitor (2) and the received light monitor (3) and receives signals generated by the output electrodes;
the control circuit monitors the change and combination of response current among the optical receiver (1), the receiving optical monitor (3) and the transmitting optical monitor (2) to monitor the uplink and downlink light splitting states of the comb filter (4), automatically judges whether the pairing is successful, automatically tunes and switches the channels of the laser (5) and the comb filter (4) to another channel if the pairing is unsuccessful, performs auto-negotiation again, and succeeds in pairing, so that normal communication with the wavelength is realized.
4. The network system according to claim 3, wherein the network system is configured to implement wavelength auto-negotiation pairing of wavelength-shared optical modules: the emitting light monitor (2) and the receiving light monitor (3) are arranged on one side of the comb filter (4), and the light receiver (1) is arranged on the other side of the comb filter (4).
5. A method for realizing wavelength auto-negotiation pairing of optical modules with the same wavelength is characterized by comprising the following steps:
1) curing parameters of any two communication units at wavelength point A and wavelength point B
1.1) tuning the emission wavelength of a laser matched with an auto-negotiation module to a wavelength point A, monitoring the current change of an emission light monitor, simultaneously tuning the temperature point of a comb filter, and recording the tuning parameters of the laser and the comb filter when the current of a light monitor to be emitted is 0 or close to 0 and is minimum;
1.2) tuning the emission wavelength of the laser to a wavelength point B, monitoring the current change of the emission light monitor, simultaneously tuning the temperature point of the comb filter, and recording the tuning parameters of the laser and the comb filter again when the current of the emission light monitor is 0 or close to 0 and minimum;
1.3) selecting parameters of the point A or the point B, configuring an auto-negotiation module, and solidifying the parameters;
2) negotiation between any two post-cure auto-negotiation modules
2.1) the laser of the first communication unit emits laser with the wavelength A;
the laser of the first communication unit emits laser with the wavelength A, the laser enters the comb filter of the first communication unit, and the response current of the emission light monitor of the first communication unit is 0;
2.2) the second communication unit receives the laser with the transmitting wavelength A
The laser passing through the comb filter of the first communication unit enters the comb filter of the second communication unit through the optical network, after the laser is split by the comb filter of the second communication unit, X% of laser with the wavelength A enters a receiving light monitor of the second communication unit to generate a response current, and the response current is monitored by a control circuit of the second communication unit;
2.3) monitoring the response current of the optical receiver of the second communication unit;
if the initial wavelength of the laser of the second communication unit is B, the comb filter of the second communication unit guides 1-X% of laser with the wavelength A into a light receiver waveguide of the second communication unit, a light receiver of the second communication unit generates a response current and is monitored by a control circuit of the second communication unit, the emission wavelength of the first communication unit and the emission wavelength of the second communication unit are successfully paired, and the step 4) is carried out;
if the initial wavelength of the laser of the second communication unit is A, leading 1-X% of the laser of the A wavelength into a light emitter waveguide of the second communication unit by a comb filter of the second communication unit, not generating a response current by a light receiver of the second communication unit, monitoring by a control circuit of the second communication unit, and leading the transmission wavelength of the first communication unit and the transmission wavelength of the second communication unit to be unsuccessfully matched, and entering step 3);
3) randomly adjusting the emission wavelength;
tuning and switching the emission wavelength of the first communication unit laser or the second communication unit laser to enable the emission wavelength of the first communication unit laser or the second communication unit laser to be different, simultaneously switching the first communication unit comb filter or the second communication unit comb filter to a corresponding wavelength channel, and repeating the steps 2.1) to 2.3);
4) the first communication unit and the second communication unit realize normal traffic.
6. The method of claim 5 for implementing co-wavelength optical module wavelength auto-negotiation pairing, wherein: the laser emitted by the first communication unit laser or the second communication unit laser comprises a specific code pattern related to the wavelength.
7. The method for implementing wavelength auto-negotiation pairing of co-wavelength optical modules according to claim 5 or 6, wherein: a ± nxt wavelength a, B ± nxt wavelength B, wherein a is a specific wavelength, B is a specific wavelength, and a ≠ B; n is a positive integer, i.e., n is 1, 2, 3 … ∞; t is the periodic interval of the wavelength.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1218978A4 (en) * | 1999-08-10 | 2006-06-14 | Coretek Inc | Double etalon optical wavelength reference device |
| CN103532635A (en) * | 2012-07-05 | 2014-01-22 | Jds尤尼弗思公司 | Tunable coherent optical receiver and method |
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