CN101997634A - Method and system for adjusting delay line interference of 100G optical communication system - Google Patents
Method and system for adjusting delay line interference of 100G optical communication system Download PDFInfo
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- CN101997634A CN101997634A CN2010105147837A CN201010514783A CN101997634A CN 101997634 A CN101997634 A CN 101997634A CN 2010105147837 A CN2010105147837 A CN 2010105147837A CN 201010514783 A CN201010514783 A CN 201010514783A CN 101997634 A CN101997634 A CN 101997634A
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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
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/67—Optical arrangements in the receiver
- H04B10/676—Optical arrangements in the receiver for all-optical demodulation of the input optical signal
- H04B10/677—Optical arrangements in the receiver for all-optical demodulation of the input optical signal for differentially modulated signal, e.g. DPSK signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/14—Monitoring arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1652—Optical Transport Network [OTN]
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Abstract
The invention discloses a method for adjusting delay line interference of a 100G optical communication system. The method comprises the following steps of: dividing 20 logical channels which are processed by a framer and bear an OTU4 service into a plurality of paths which correspond to a plurality of receivers of the 100G optical communication system respectively; judging whether each path generates a warning signal or not; and if the path generates a warning signal, performing delay line interference adjustment according to the indication of the warning signal by using the receiver corresponding to the path which generates the warning signal. By the technical scheme, the delay line interference adjustment of the 100G optical communication system is realized.
Description
Technical field
The present invention relates to the wavelength-division transmission technique field, relate in particular to a kind of 100G light communication system delay line and interfere the method and system of adjusting.
Background technology
Along with the rapid growth of bearer network bandwidth demand, 100G becomes the development in future direction gradually.
OTN (Optical Transport Network for 100G, optical transfer network) standard, ITUT has worked out the relevant encapsulation definition of ODU4/OTU4, the speed of OTU4 is about 112Gb/s, electric device can't be handled so high speed, can bit rate be reduced to resultant signal speed 1/4 by adopting technical combinations such as multi-wavelength, many level modulation, many palarization multiplexings.The incoherent modulation scheme of the general employing of 100G line side optical module at present, when adopting incoherent modulation scheme, two subcarrier spacing 50GHz, single wave speed is 56Gb/s, every sub-carrier signal is again DQPSK (Differential Quadrature Reference Phase ShiftKeying, difference quadrature phase shift keying) modulation, actual code speed is 28Gbaud.
The reception of DQPSK modulation module need be carried out delay line and interfere DLI to adjust, the difference that the delay line interference of the single wavelength light module of 40G is adjusted in line side optical module and the prior art in the 100G light communication system is: 40G light communication system list wavelength light module only needs framer that a LOF is provided (loss of frame, LOF) alarm signal is as indication, can realize the delay line interference adjustment of optical module, and the line side optical module in the 100G light communication system comprises a plurality of receivers, and the 40G light communication system realizes that the method that the delay line interference is adjusted can't be applicable to the adjustment that 100G light communication system line side optical module realization delay line is interfered in the prior art.
Summary of the invention
The invention provides a kind of 100G light communication system delay line and interfere the method and system of adjusting, realized that the delay line of 100G light communication system is interfered adjustment.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of 100G light communication system delay line is interfered the method for adjusting, and described method comprises:
20 logic channels of the carrying OTU4 business that framer is handled are divided into the multichannel corresponding respectively with a plurality of receivers of described 100G light communication system;
Judge whether each road produces alarm signal, as producing alarm signal, a road pairing receiver that then produces alarm signal carries out delay line according to the indication of described alarm signal and interferes adjustment.
A plurality of receivers of described 100G light communication system comprise two receivers, the two-way that 20 logic channels are divided into and described two receivers are corresponding respectively of the carrying OTU4 business that described framer is handled, and each road comprises 10 logic channels in the described two-way.
Judge whether each road produces alarm signal, as producing alarm signal, a road pairing receiver that then produces alarm signal carries out delay line according to the indication of described alarm signal and interferes the method for adjusting to comprise:
Each logic channel with each road carries out deciding frame respectively;
Whether each logic channel of judging each road respectively finds frame head;
For each road, if there is logic channel not find frame head, then this road produces LOF LOF alarm signal;
The a road pairing receiver that produces LOF LOF alarm signal carries out delay line according to the indication of described LOF LOF alarm signal and interferes adjustment.
Judge whether each road produces alarm signal, as producing alarm signal, a road pairing receiver that then produces alarm signal carries out delay line according to the indication of described alarm signal and interferes the method for adjusting also to comprise:
For each road, if each logic channel all finds frame head, the Logic Channel Identifier LLM of each logic channel by this road I, the Q two light paths quadrature whether of judging this road carrying then;
If not, then this road produces passage alignment failure OLA (Out of Lane Alignment) alarm signal;
One road pairing receiver of generation passage alignment failure OLA alarm signal carries out the delay line interference according to the indication of described passage alignment failure OLA alarm signal and adjusts.
If it is identical or differ 180 ° that the Logic Channel Identifier LLM of each logic channel by this road judges I, the Q two light path phase places on this road, then 90 ° of I that delay line interferes or Q phase shifts are adjusted in the indication of the passage alignment failure OLA alarm signal that produces according to this road of the pairing receiver in this road.
A kind of 100G light communication system delay line is interfered the system that adjusts, and comprises logic channel grouping module, signal judge module, a plurality of receiver, wherein:
Described logic channel grouping module is used for 20 logic channels of the carrying OTU4 business of framer processing are divided into the multichannel corresponding respectively with a plurality of receivers of described 100G light communication system;
Described signal judge module is used to judge whether each road produces alarm signal, and as producing alarm signal, then described alarm signal is used to indicate the receiver of this road correspondence that produces described alarm signal to realize delay line interference adjustment;
Described a plurality of receiver is respectively applied for the indication of the alarm signal that produces according to this road corresponding with it and carries out delay line interference adjustment.
Described a plurality of receiver comprises two receivers, and described logic channel grouping module is used for the two-way that 20 logic channels are divided into and described two receivers are corresponding respectively with the carrying OTU4 business of described framer processing.
Described signal judge module specifically is used for: each logic channel with each road carries out deciding frame respectively, whether each logic channel of judging each road respectively finds frame head, for each road, if there is logic channel not find frame head, then this road produces LOF LOF alarm signal, and described LOF LOF alarm signal is used to indicate the receiver of this road correspondence that produces described LOF LOF alarm signal to realize delay line interference adjustment.
Described signal judge module also is used for: for each road, if each logic channel all finds frame head, the Logic Channel Identifier LLM of each logic channel by this road I, the Q two light paths quadrature whether of judging this road then, if not, then this road produces passage alignment failure OLA alarm signal, and described passage alignment failure OLA alarm signal is used to indicate the receiver of this road correspondence that produces described passage alignment failure OLA alarm signal to realize that delay line is interfered to adjust.
If it is identical or differ 180 ° that the signal judge module is judged I, the Q two light path phase places on this road by the Logic Channel Identifier LLM of each logic channel on this road, then 90 ° of I that delay line interferes or Q phase shifts are adjusted in the indication of the passage alignment failure OLA alarm signal that produces according to this road of the pairing receiver in this road.
The invention provides a kind of 100G light communication system delay line and interfere the method and system of adjusting, this method is divided into the multichannel corresponding respectively with a plurality of receivers of 100G light communication system with 20 logic channels of the OTU4 business of the carrying 100G light communication system of framer processing, judge whether each road produces alarm signal, as produce alarm signal, the a road pairing receiver that then produces alarm signal carries out delay line according to this alarm signal and interferes adjustment, has solved the 100G light communication system and has carried out the problem that delay line is interfered adjustment.
Description of drawings
Fig. 1 produces the frame diagram of alarm signal for the embodiment of the invention;
Fig. 2 produces the flow chart of LOF alarm signal and OLA alarm signal for the embodiment of the invention;
Fig. 3 is that the embodiment of the invention is adjusted the flow chart that delay line is interfered according to the OLA alarm signal;
Fig. 4 is that another embodiment of the present invention is adjusted the flow chart that delay line is interfered according to the OLA alarm signal.
Embodiment
In conjunction with the accompanying drawings the present invention is described in further detail below by embodiment.
Embodiment one:
In the present embodiment, 20 logic channels of the carrying OTU4 business that 100G light communication system framer is handled are divided into the two-way corresponding respectively with two receivers of 100G light communication system, and each road comprises 10 logic channels.
Fig. 1 is the frame diagram of embodiment of the invention generation alarm signal, as shown in Figure 1:
100G light communication system line side optical module is divided into two groups with four road light signals of the OTU4 business that receives and is input to two receivers, be respectively RZ-DQPSK (x) receiver and RZ-DQPSK (y) receiver, each receiver receives I, the Q two ways of optical signals, each receiver by opto-electronic conversion with its I that receives, the Q two ways of optical signals converts two signals of telecommunication to, totally 4 signals of telecommunication that converted to by two receivers are again through 4: the processing of 10DEMUX demultiplexing module, convert 10 signals of telecommunication to, and input to framer, framer is divided into 20 logic channels according to optical transfer network OTN agreement with these 10 signals of telecommunication, and what these 20 logic channels referred to is exactly 20 logic channels of the carrying OTU4 business of framer processing;
Logic channel grouping module in the framer is divided into one group with the 0-9 channel of 20 logic channels and represents the x road, the 10-19 channel is divided into one group and represents the y road, the signal judge module is to the x road, y judges respectively on the road, judge whether each road produces alarm signal, as produce alarm signal, the receiver that then produces this road correspondence of alarm signal is interfered adjustment according to the indication realization delay line of this alarm signal, promptly, if the x road produces alarm signal, then the alarm signal of x road generation is used to indicate RZ-DQPSK (x) receiver to carry out delay line and interferes adjustment, if the y road produces alarm signal, then the alarm signal of y road generation is used to indicate RZ-DQPSK (y) receiver to carry out delay line and interferes adjustment.
Fig. 2 is the flow chart of embodiment of the invention generation LOF signal and OLA signal, as shown in Figure 2:
S201: 10 logic channels on x road, every road, y road are carried out deciding frame respectively, judge respectively whether 10 logic channels in every road find frame head;
S202: if the x road has logic channel not find frame head, then the x road produces the LOF_x signal; If the y road has logic channel not find frame head, then the y road produces the LOF_y signal;
S203: RZ-DQPSK (x) receiver that this LOF_x signal is used in reference to timberline trackside optical module carries out delay line interference adjustment; RZ-DQPSK (y) receiver that this LOF_y signal is used in reference to timberline trackside optical module carries out delay line interference adjustment.
S204: if each logic channel of x road all finds frame head, then the Logic Channel Identifier LLM of each logic channel by the x road judges whether quadrature of the I on x road and Q two light paths; If each logic channel of y road all finds frame head, then the Logic Channel Identifier LLM of each logic channel by the y road judges whether quadrature of the I on y road and Q two light paths;
S205: if the I on x road and Q two light paths are not quadratures, then the x road produces the OLA_x signal; If the I on y road and Q two light paths are not quadratures, then the y road produces the OLA_y signal;
S206: RZ-DQPSK (x) receiver that this OLA_x signal is used in reference to timberline trackside optical module carries out delay line interference adjustment; RZ-DQPSK (y) receiver that this OLA_y signal is used in reference to timberline trackside optical module carries out delay line interference adjustment.
This embodiment has solved the 100G light communication system and has produced the problem that delay line is interfered the adjustment index signal.
Embodiment two:
Fig. 3 is that the embodiment of the invention is adjusted the flow chart that delay line is interfered according to the OLA signal, as shown in Figure 3:
Present embodiment is accepted and is implemented 1, if it is identical with Q two light path phase places that the Logic Channel Identifier LLM of each logic channel further by each road judges the I on each road, then this road produces the OLA alarm signal, the pairing receiver in this road that produces the OLA alarm signal is adjusted 90 ° of I that delay line interferes or Q phase shifts according to the indication of OLA alarm signal, and idiographic flow is as follows:
S301, begin to detect;
Whether the Logic Channel Identifier LLM of 10 logic channels on S302, detection x road exists 0,1,2,3,4 and 0,1,2,3,4 to repeat, if, then carry out S303, if not, then carry out S304;
S303, generation OLA_x alarm signal, 90 ° of I that RZ-DQPSK (x) receiver adjustment delay line is interfered or Q phase shifts;
Whether the Logic Channel Identifier LLM of 10 logic channels on S304, detection x road exists 5,6,7,8,9 and 5,6,7,8,9 to repeat, if, then carry out S305, if not, then carry out S306;
S305, generation OLA_x alarm signal, 90 ° of I that RZ-DQPSK (x) receiver adjustment delay line is interfered or Q phase shifts;
Whether the LLM of 10 logic channels on S306, detection y road exists 10,11,12,13,14 and 10,11,12,13,14 to repeat, if, then carry out S307, if not, then carry out S308;
S307, produce the OLA_y alarm signal, RZ-DQPSK (y) receiver is adjusted 90 ° of I that delay line interferes or Q phase shifts according to this OLA_y alarm signal;
Whether the LLM of 10 logic channels on S308, detection y road exists 15,16,17,18,19 and 15,16,17,18,19 to repeat, if, then carry out S309, if not, then carry out S310;
S309, produce the OLA_y alarm signal, RZ-DQPSK (y) receiver is adjusted 90 ° of I that delay line interferes or Q phase shifts according to this OLA_y alarm signal;
S310, end.
Fig. 4 is that another embodiment of the present invention is adjusted the flow chart that delay line is interfered according to the OLA signal, as shown in Figure 4: accept and implement 1, if the I that the Logic Channel Identifier LLM of each logic channel further by each road judges each road and Q two light paths 180 ° of phasic differences mutually, then this road produces the OLA alarm signal, the pairing receiver in this road that produces the OLA alarm signal is adjusted 90 ° of I that delay line interferes or Q phase shifts according to the indication of described OLA alarm signal, and idiographic flow is as follows:
S401, begin to detect;
Whether the Logic Channel Identifier LLM of 10 logic channels on S402, detection x road exists 0,1,2,3,4 and 11,12,13,14,15, if, then carry out S403, if not, then carry out S404;
S403, generation OLA_x alarm signal, 90 ° of I that RZ-DQPSK (x) receiver adjustment delay line is interfered or Q phase shifts;
The Logic Channel Identifier LLM of 10 logic channels on S404, detection x road exists 5,6,7,8,9 and 6,7,8,9,10, if, then carry out S405, if not, then carry out S406;
S405, generation OLA_x alarm signal, 90 ° of I that RZ-DQPSK (x) receiver adjustment delay line is interfered or Q phase shifts;
Whether the LLM of 10 logic channels on S406, detection y road exists 1,2,3,4,5 and 10,11,12,13,14, if, then carry out S407, if not, then carry out S408;
S407, produce the OLA_y alarm signal, RZ-DQPSK (y) receiver is adjusted 90 ° of I that delay line interferes or Q phase shifts according to this OLA_y alarm signal;
Whether the LLM of 10 logic channels on S408, detection y road exists 15,16,17,18,19 and 0,16,17,18,19, if, then carry out S409, if not, then carry out S410;
S409, produce the OLA_y alarm signal, RZ-DQPSK (y) receiver is adjusted 90 ° of I that delay line interferes or Q phase shifts according to this OLA_y alarm signal;
S410, end.
Carrying out delay line according to the indication of LOF alarm signal interferes adjustment with reference to prior art.
The invention is not restricted to two receivers of 100G light communication system line side optical module, when 100G light communication system line side optical module comprises a plurality of receiver, 20 logic channels of the carrying OTU4 business that framer can be handled are divided into the multichannel corresponding respectively with a plurality of receivers of 100G light communication system, judge whether each road produces alarm signal, as produce alarm signal, the a road pairing receiver that then produces alarm signal carries out delay line according to this alarm signal and interferes adjustment, such as, optical module comprises 4 when 100G light communication system line side, 6,8, during 10 receivers such as even number such as grade, 20 logic channels of the corresponding carrying OTU4 business that framer is handled are divided into 4,6,8, roads such as 10, judge whether each road produces alarm signal, as producing alarm signal, a road pairing receiver that then produces alarm signal carries out delay line according to this alarm signal and interferes adjustment.The claimed a kind of 100G light communication system delay line of the present invention is interfered the system that adjusts; comprise logic channel grouping module, signal judge module, a plurality of receiver; this logic channel grouping module and/or signal judge module also are not limited to the above embodiment of the present invention; this logic channel grouping module and/or signal judge module are not limited in the framer that the above embodiment of the present invention is arranged on the 100G light communication system; can be arranged in other modules of 100G light communication system, set up signal transmission with framer and get in touch and get final product.
Above content be in conjunction with concrete execution mode to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a 100G light communication system delay line is interfered the method for adjusting, and it is characterized in that described method comprises:
20 logic channels of the carrying OTU4 business that framer is handled are divided into the multichannel corresponding respectively with a plurality of receivers of described 100G light communication system;
Judge whether each road produces alarm signal, as producing alarm signal, a road pairing receiver that then produces alarm signal carries out delay line according to the indication of described alarm signal and interferes adjustment.
2. the method for claim 1, it is characterized in that, a plurality of receivers of described 100G light communication system comprise two receivers, the two-way that 20 logic channels are divided into and described two receivers are corresponding respectively of the carrying OTU4 business that described framer is handled, each road comprises 10 logic channels in the described two-way.
3. method as claimed in claim 1 or 2, it is characterized in that, judge whether each road produces alarm signal, as producing alarm signal, a road pairing receiver that then produces alarm signal carries out delay line according to the indication of described alarm signal and interferes the method for adjusting to comprise:
Each logic channel with each road carries out deciding frame respectively;
Whether each logic channel of judging each road respectively finds frame head;
For each road, if there is logic channel not find frame head, then this road produces LOF LOF alarm signal;
The a road pairing receiver that produces LOF LOF alarm signal carries out delay line according to the indication of described LOF LOF alarm signal and interferes adjustment.
4. method as claimed in claim 3, it is characterized in that, judge whether each road produces alarm signal, as producing alarm signal, a road pairing receiver that then produces alarm signal carries out delay line according to the indication of described alarm signal and interferes the method for adjusting also to comprise:
For each road, if each logic channel all finds frame head, the Logic Channel Identifier LLM of each logic channel by this road I, the Q two light paths quadrature whether of judging this road then;
If not, then this road produces passage alignment failure OLA alarm signal;
One road pairing receiver of generation passage alignment failure OLA alarm signal carries out the delay line interference according to the indication of described passage alignment failure OLA alarm signal and adjusts.
5. method as claimed in claim 4, it is characterized in that, if it is identical or differ 180 ° that the Logic Channel Identifier LLM of each logic channel by this road judges I, the Q two light path phase places on this road, then 90 ° of I that delay line interferes or Q phase shifts are adjusted in the indication of the passage alignment failure OLA alarm signal that produces according to this road of the pairing receiver in this road.
6. a 100G light communication system delay line is interfered the system that adjusts, and it is characterized in that, comprises logic channel grouping module, signal judge module, a plurality of receiver, wherein:
Described logic channel grouping module is used for 20 logic channels of the carrying OTU4 business of framer processing are divided into the multichannel corresponding respectively with a plurality of receivers of described 100G light communication system;
Described signal judge module is used to judge whether each road produces alarm signal, and as producing alarm signal, then described alarm signal is used to indicate the receiver of this road correspondence that produces described alarm signal to realize delay line interference adjustment;
Described a plurality of receiver is respectively applied for the indication of the alarm signal that produces according to this road corresponding with it and carries out delay line interference adjustment.
7. system as claimed in claim 6, it is characterized in that, described a plurality of receiver comprises two receivers, and described logic channel grouping module is used for the two-way that 20 logic channels are divided into and described two receivers are corresponding respectively with the carrying OTU4 business of described framer processing.
8. as claim 6 or 7 described systems, it is characterized in that, described signal judge module specifically is used for: each logic channel with each road carries out deciding frame respectively, whether each logic channel of judging each road respectively finds frame head, for each road, if there is logic channel not find frame head, then this road produces LOF LOF alarm signal, and described LOF LOF alarm signal is used to indicate the receiver of this road correspondence that produces described LOF LOF alarm signal to realize delay line interference adjustment.
9. system as claimed in claim 8, it is characterized in that, described signal judge module also is used for: for each road, if each logic channel all finds frame head, the Logic Channel Identifier LLM of each logic channel by this road I, the Q two light paths quadrature whether of judging this road then, if not, then this road produces passage alignment failure OLA alarm signal, and described passage alignment failure OLA alarm signal is used to indicate the receiver of this road correspondence that produces described passage alignment failure OLA alarm signal to realize that delay line is interfered to adjust.
10. system as claimed in claim 9, it is characterized in that, if it is identical or differ 180 ° that the signal judge module is judged I, the Q two light path phase places on this road by the Logic Channel Identifier LLM of each logic channel on this road, then 90 ° of I that delay line interferes or Q phase shifts are adjusted in the indication of the passage alignment failure OLA alarm signal that produces according to this road of the pairing receiver in this road.
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| CN201010514783.7A CN101997634B (en) | 2010-10-21 | 2010-10-21 | A kind of method and system of 100G light communication system delay line interference adjustment |
| PCT/CN2011/073835 WO2012051847A1 (en) | 2010-10-21 | 2011-05-09 | Method and system for delay line interference adjustment in 100g optical communication system |
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| CN201010514783.7A CN101997634B (en) | 2010-10-21 | 2010-10-21 | A kind of method and system of 100G light communication system delay line interference adjustment |
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| WO2012051847A1 (en) * | 2010-10-21 | 2012-04-26 | 中兴通讯股份有限公司 | Method and system for delay line interference adjustment in 100g optical communication system |
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| CN1642042A (en) * | 2004-01-15 | 2005-07-20 | 华为技术有限公司 | Optical communication system, sub-rate multiplex demultiplex and its method |
| US7266311B2 (en) * | 2004-09-29 | 2007-09-04 | Lucent Technologies Inc. | Control of delay line interferometer |
| CN101340243A (en) * | 2008-08-11 | 2009-01-07 | 福州高意通讯有限公司 | Method for implementing DQPSK demodulation and apparatus thereof |
| CN101471741A (en) * | 2007-12-26 | 2009-07-01 | 希尔纳公司 | Byte-interleaving systems and methods for 100G optical transport enabling multi-level optical transmission |
| WO2010043924A1 (en) * | 2008-10-15 | 2010-04-22 | Alcatel Lucent | Generation of a feedback signal for a polarization mode dispersion compensator in a communication system using alternate-polarization |
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| CN101997634B (en) * | 2010-10-21 | 2015-08-12 | 中兴通讯股份有限公司 | A kind of method and system of 100G light communication system delay line interference adjustment |
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| CN1642042A (en) * | 2004-01-15 | 2005-07-20 | 华为技术有限公司 | Optical communication system, sub-rate multiplex demultiplex and its method |
| US7266311B2 (en) * | 2004-09-29 | 2007-09-04 | Lucent Technologies Inc. | Control of delay line interferometer |
| CN101471741A (en) * | 2007-12-26 | 2009-07-01 | 希尔纳公司 | Byte-interleaving systems and methods for 100G optical transport enabling multi-level optical transmission |
| CN101340243A (en) * | 2008-08-11 | 2009-01-07 | 福州高意通讯有限公司 | Method for implementing DQPSK demodulation and apparatus thereof |
| WO2010043924A1 (en) * | 2008-10-15 | 2010-04-22 | Alcatel Lucent | Generation of a feedback signal for a polarization mode dispersion compensator in a communication system using alternate-polarization |
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| WO2012051847A1 (en) * | 2010-10-21 | 2012-04-26 | 中兴通讯股份有限公司 | Method and system for delay line interference adjustment in 100g optical communication system |
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| WO2012051847A1 (en) | 2012-04-26 |
| CN101997634B (en) | 2015-08-12 |
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