CN105827331A - Orthogonal dual-polarization phase-shift keying modulation method and equipment based on orthogonal dual-polarization phase-shift keying modulation - Google Patents
Orthogonal dual-polarization phase-shift keying modulation method and equipment based on orthogonal dual-polarization phase-shift keying modulation Download PDFInfo
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- CN105827331A CN105827331A CN201610141624.4A CN201610141624A CN105827331A CN 105827331 A CN105827331 A CN 105827331A CN 201610141624 A CN201610141624 A CN 201610141624A CN 105827331 A CN105827331 A CN 105827331A
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- polarization phase
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- shift keying
- liquid crystal
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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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/548—Phase or frequency modulation
- H04B10/556—Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]
- H04B10/5561—Digital phase modulation
-
- 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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/532—Polarisation modulation
-
- 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
- H04B10/50—Transmitters
- H04B10/564—Power control
-
- 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
- H04B10/50—Transmitters
- H04B10/572—Wavelength control
Abstract
The invention relates to a method for orthogonal dual-polarization phase-shift keying modulation. The method comprises: communication between an external RS232 communication interface and host debugging software is completed; after receiving by an FPGA module, modulation of an orthogonal dual-polarization phase-shift keying signal is implemented; a pure digital signal is converted into an analog signal by a high-speed D/A circuit and is used as an input signal of a liquid crystal module control circuit, so that a silicon-based liquid crystal module is controlled. Meanwhile, light is inputted into a single fiber and enters the silicon-based liquid crystal module; under the control signal effect, the light is converted into an optical signal with any wavelength and the optical signal can be outputted from any of eight output ports. According to the modulation method, a rate of 100 Gb/s or 400 Gb/s or even a higher rate can be supported; the bandwidth of a dense wavelength division multiplexing (DWDM) system is increased obviously; and the funding for network establishment is reduced.
Description
Technical field
The present invention relates to a kind of method that intelligence wavelength selects, particularly relate to a kind of based on Orthogonal Double polarization phase shift keying modulation method, for 1 × 8 intelligence wavelength selecting device, realize the optical signal conversion of any wavelength, and can at 8 output ports, any one exports, and implement this Orthogonal Double polarization phase shift keying modulation method equipment.
Background technology
Dense wave division multipurpose (Densewavelengthdivisionmultiplexing, DWDM) system be one for the laser technology improving bandwidth at existing fiber shaft on the net.In the optical fiber specified, this technology can multiplex the tight spectrum spacing of single fiber carrier, in order to utilizes the transmission performance that can reach.Thus, under given information carrying capacity, it is possible to the optical fiber total quantity required for minimizing.
Dwdm system in early days, fiber bandwidth is considered as unlimited, even if using relatively low speed, capacity can also realize by simply increasing extra DWDM passage.Additionally transfer rate the most easily realizes 2.5Gb/s to 10Gb/s.
Currently, the whole world come into big data, intelligentized Internet era, either mobile Internet or the application of Internet of Things all produce mass data, the rise of big market demand be dwdm system development provide important impetus.Requirement channel speed improves constantly, and can transmit 100Gb/s and 400Gb/s speed the highest, and system frequency interval is shorter and shorter, and capacity becomes increasing.Now, whole industry rises to every optical fiber 96 passage (every passage 50GHz interval) from every optical fiber 40 passage (every passage 100GHz interval), more than 2 times of heap(ed) capacity before being.And, speed brings up to 40Gb/s even to 100Gb/s, 10 times before being from 10Gb/s.
Dwdm system is the carrier of big data, and the equipment of existing DWDM transmission system cannot realize, this is accomplished by a kind of wavelength being applicable to high speed dwdm system can be with the equipment of intelligent selection, as the key equipment of transmission system, it is effectively improved channel rate, increases frequency spectrum service efficiency.
Such as: the optical-fibre channel at 100GHz interval, the signal of 100Gb/s to be carried can use the passage of interval 50GHz to realize by intelligence wavelength selecting device.
Summary of the invention
It is an object of the present invention to provide a kind of for Orthogonal Double polarization phase shift keying modulation method, can realize transmitting the most higher speed of 100Gb/s and 400Gb/s, it is possible to dynamically adjust channel spacing, wavelength selection, optical power control can be carried out.
Further object is that and provide a kind of wavelength intelligent based on Orthogonal Double polarization phase shift keying modulation to select equipment, the transmission the most higher speed of 100Gb/s and 400Gb/s can be realized, can dynamically adjust channel spacing, it is possible to carry out wavelength selection and optical power control.
The one that the present invention provides polarizes phase shift keying modulation method for Orthogonal Double, and its step includes:
Outside RS232 communication interface completes to communicate with main frame debugging software, and after being received instruction by FPGA module, implement the modulation of Orthogonal Double polarization phase-shift keyed signal, through high-speed d/a circuit, pure digi-tal signal is converted to analogue signal, as the input signal of Liquid Crystal Module control circuit, control liquid crystal on silicon module.
Meanwhile, single optical fiber inputs light, enters liquid crystal on silicon module, under the control signal effect of Liquid Crystal Module control circuit output, be converted into the optical signal of any wavelength, it is possible to any one exports at 8 output ports.
In the modulator approach that the present invention provides, for realizing the liquid crystal on silicon module of wavelength convert, its control signal is the Orthogonal Double polarization phase shift keying modulation circuit output in FPGA module.As carrying out necessity of data communication with FPGA module, outside RS232 communication interface completes data communication with main frame debugging software, it is simple to FPGA module carries out man machine interface and shows and data process.
Orthogonal Double for coordinating the present invention to provide polarizes the enforcement of phase shift keying modulation method, needs corresponding 1 × 8 intelligence wavelength selecting device.
A kind of based on Orthogonal Double polarization phase shift keying modulation the wavelength intelligent that the present invention provides selects equipment, including:
FPGA module, for realizing the modulation of Orthogonal Double polarization phase-shift keyed signal.Concrete, FPGA module is PLD FLEX10K70, it includes based on the Orthogonal Double polarization modulation circuit of phase-shift keyed signal, sram memory and program storage, and RS232 serial ports.
Liquid crystal on silicon module, for by a road input optical signal, is converted into the optical signal of any wavelength, it is possible to any one in 8 output ports exports.
Clock source, is connected with FPGA module, it is provided that the clock signal needed for FPGA module.
Power supply, is connected with FPGA module, it is provided that required electric power.
Modulation circuit based on Orthogonal Double polarization phase-shift keyed signal, it is in FPGA module, it is connected with deserializer, quadrature carrier generator and adder including deserializer, the first multiplier, the second multiplier, quadrature carrier generator and adder, the first multiplier and the second multiplier the most simultaneously.
For realizing wavelength and selecting simultaneously, channel optical power controls, present invention wavelength intelligent based on Orthogonal Double polarization phase-shift keying select equipment also include Liquid Crystal Module control circuit, high-speed d/a circuit, gain-changeable amplifier circuit and outside RS232 communication interface etc. one or more.
High-speed d/a circuit, it is connected with FPGA module, for the high-speed digital signal that FPGA module exports is converted into analogue signal.
Gain-changeable amplifier circuit, it is connected with high-speed d/a circuit, for being adjusted the luminous power in each passage.
Liquid Crystal Module control circuit, it receives the signal of telecommunication of gain-changeable amplifier circuit output, and exports to liquid crystal on silicon module.
Outside RS232 communication interface, it is connected with FPGA module, for carrying out data communication with outside debugging software.
The beneficial effect that technical solution of the present invention realizes:
Modulator approach and wavelength intelligent thereof that the present invention provides select equipment, support the most higher speed of 100Gb/s and 400Gb/s, dramatically increase the bandwidth of DMDW system, reduce operator's fund input to networking.
The wavelength intelligent that the present invention provides selects equipment, make system more flexibly and can dynamic bandwidth allocation, meet the performance requirement of system and the needs of capacity, and be no longer necessary to new equipment, extend the use cycle of used equipment, cost is substantially reduced.Customer equipment efficiency can also be made to reach maximum, allow client provide more competitive service and capacity.
The present invention provide wavelength intelligent select equipment, it is possible to dynamically adjust channel spacing, also can carry out optical power control, motility is big, precision is high, capacity is big.
The wavelength intelligent that the present invention provides selects equipment, and volume is little, lightweight, sturdy and durable, heat resistance is strong, it is simple to installs and uses.
The wavelength intelligent that the present invention provides selects equipment, it is provided that external communication interface, convenient for users, improves user job efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation that wavelength intelligent of the present invention selects equipment one embodiment；
Fig. 2 is the modulation circuit structural representation that wavelength intelligent of the present invention selects the Orthogonal Double polarization phase-shift keyed signal of equipment；
Fig. 3 is the structural representation that wavelength intelligent of the present invention selects Liquid Crystal Module control circuit one embodiment of equipment；
Fig. 4 is that wavelength intelligent of the present invention selects equipment to be applied to the schematic diagram of dwdm system one embodiment.
Detailed description of the invention
Technical scheme is described in detail below in conjunction with accompanying drawing.The embodiment of the present invention is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, it will be understood by those within the art that, the technical scheme of invention can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention, it all should be contained in scope of the presently claimed invention.
The one that the present embodiment provides polarizes phase shift keying modulation method for Orthogonal Double, its step includes: outside RS232 communication interface completes to communicate with main frame debugging software, and after being received instruction by FPGA module, implement the modulation of Orthogonal Double polarization phase-shift keyed signal, through high-speed d/a circuit, pure digi-tal signal is converted to analogue signal, as the input signal of Liquid Crystal Module control circuit, controls liquid crystal on silicon module.
Meanwhile, single optical fiber inputs light, enters liquid crystal on silicon module, under the control signal effect of Liquid Crystal Module control circuit output, be converted into the optical signal of any wavelength, it is possible to any one exports at 8 output ports.
In the modulator approach that the present invention provides, as carrying out necessity of data communication with FPGA module, outside RS232 communication interface completes data communication with main frame debugging software, it is simple to FPGA module carries out man machine interface and shows and data process.
In order to implement above-mentioned modulator approach, the present embodiment is also provided to a kind of wavelength intelligent and selects equipment.Fig. 1 is the structural representation that wavelength intelligent of the present invention selects equipment one embodiment, as shown in Figure 1, this 1 × 8 intelligence wavelength selecting device, including FPGA module 1, liquid crystal on silicon module 2, clock source 3, power module 4, high-speed d/a circuit 5, liquid crystal control circuit 6, gain-changeable amplifier circuit 7 and outside RS232 communication interface 8.
FPGA module 1 is PLD system, use PLD FLEX10K70 (ALTERA company), altogether it is provided with 503 pins, including being simultaneously connected with high-speed d/a circuit (such as: AnalogDeviceAD9742 type integrated circuit), clock source and power module.Additionally, be also integrated with sram memory, program storage and RS232 serial ports on it.Original program deposited by program storage, and SRAM deposits program and the data of operation.In order to equipment and outside carry out data exchange and control, it is additionally provided with outside RS232 communication interface (such as: SipexSP3232E type TTL turns 232 level integrated circuits).Communicated by outside RS232 communication interface and outside debugging software, it is achieved with the communication of main frame.By main frame debugging software, the data such as required wavelength interval, adjustable gain are sent to FPGA module.
Clock source and power supply are connected with FPGA module respectively, provide the clock signal needed for FPGA module and electric power respectively.In the present embodiment, power module uses TILM2576 and TILM1117 type power module, provides required 3.3V and 1.2V voltage respectively.Clock source uses AnalogDeviceAD9522 type clock generator.
In the present embodiment, high-speed d/a circuit is connected with FPGA module, for the high-speed digital signal that FPGA module exports is converted into analogue signal.
In the present embodiment, Liquid Crystal Module control circuit receives the signal of telecommunication of gain-changeable amplifier circuit output, and exports to liquid crystal on silicon module.
In the present embodiment, gain-changeable amplifier circuit uses AnalogDeviceAD8330 type integrated circuit, and gain ranging, up to 60dB, is connected with high-speed d/a circuit, for being adjusted the luminous power in every passage.
For ease of supporting the most higher speed of 100Gb/s and 400Gb/s, dramatically increase the bandwidth of DMDW system, in the present embodiment, liquid crystal on silicon module uses HimaxHX7308 type reflecting active matrix silicon based liquid crystal screen, this device is operated in reflective-mode, CMOS technology is utilized to be produced on silicon base chip, active matrix provides the voltage between each pixel electrode and a common transparent electrode, separated by one layer of liquid crystal and pixel electrode, under control of the control signal, the wavelength interval of input light is changed.
As in figure 2 it is shown, modulation circuit based on Orthogonal Double polarization phase-shift keyed signal, its by deserializer, the first multiplier, the second multiplier, quadrature carrier and adder form.High speed signal first passes around deserializer, serial signal is become parallel signal, and it is divided into 2 road signals, and then with 2 road quadrature carrier signals in multiplier after computing, enter back into adder, carry out signal sum operation, complete the modulation of Orthogonal Double polarization phase-shift keyed signal, form the input signal of Liquid Crystal Module control circuit.
As it is shown on figure 3, Liquid Crystal Module control circuit is made up of EL-5825 integrated circuit (Intersil company), FPGA module input data signal, convert through signal after entering EL-5825, form the line frequency needed for liquid crystal on silicon and row frequency signal.
1 × 8 intelligence wavelength selecting device of the present embodiment makes dwdm system support the most higher speed of 100Gb/s and 400Gb/s, dramatically increases the bandwidth of DMDW system, makes system more flexibly and can dynamic bandwidth allocation
As a example by unidirectional transmission system, as shown in Figure 4, multiple input into light wave through 1 × 8 intelligence wavelength selecting device, being decomposed into multiple output light-wave (λ 1, λ 2, λ 3 ..., λ 8) at the other end, these eight kinds of output light-waves can be by the data of high speed dwdm system transmission 100Gb/s and 400Gb/s even more two-forty, meet the performance requirement of system and the needs of capacity, and it is no longer necessary to new equipment, and extending the use cycle of used equipment, cost is substantially reduced.Customer equipment efficiency can also be made to reach maximum, allow client provide more competitive service and capacity.
Claims (12)
1. polarizing a phase shift keying modulation method for Orthogonal Double, its step includes:
Outside RS232 communication interface completes to communicate with main frame debugging software, and after being received instruction by FPGA module, implement the modulation of Orthogonal Double polarization phase-shift keyed signal, through high-speed d/a circuit, pure digi-tal signal is converted to analogue signal, as the input signal of Liquid Crystal Module control circuit, control liquid crystal on silicon module；
Meanwhile, single optical fiber inputs light, enters liquid crystal on silicon module, under the control signal effect of Liquid Crystal Module control circuit output, be converted into the optical signal of any wavelength, it is possible to any one exports at 8 output ports.
2. a wavelength intelligent based on Orthogonal Double polarization phase shift keying modulation selects equipment, it is characterised in that including:
FPGA module, is used for realizing Orthogonal Double polarization phase-shift keyed signal modulation circuit；
Liquid crystal on silicon module, for by a road input optical signal, is converted into the optical signal of any wavelength, it is possible to any one exports at 8 output ports；
Clock source, is connected with FPGA module, it is provided that the clock signal needed for FPGA module；
Power supply, is connected with FPGA module, it is provided that required electric power.
Wavelength intelligent based on Orthogonal Double polarization phase shift keying modulation the most according to claim 2 selects equipment, it is characterised in that also include Liquid Crystal Module control circuit, high-speed d/a circuit and gain-changeable amplifier circuit；Described Liquid Crystal Module control circuit, the signal of telecommunication of the gain-changeable amplifier circuit output described in reception, and export to liquid crystal on silicon module；
Described high-speed d/a circuit, is connected with described FPGA module, for the high-speed digital signal that FPGA module exports is converted into analogue signal；
Described gain-changeable amplifier circuit, is connected with described high-speed d/a circuit, for being adjusted the luminous power in each passage；.
Wavelength intelligent based on Orthogonal Double polarization phase shift keying modulation the most according to claim 3 selects equipment, it is characterised in that described Liquid Crystal Module control circuit is EL-5825 type integrated circuit.
Wavelength intelligent based on Orthogonal Double polarization phase shift keying modulation the most according to claim 3 selects equipment, it is characterised in that described high-speed d/a circuit is AnalogDeviceAD9742 type integrated circuit.
Wavelength intelligent based on Orthogonal Double polarization phase shift keying modulation the most according to claim 3 selects equipment, it is characterised in that described gain-changeable amplifier circuit is AnalogDeviceAD8330 type integrated circuit, and gain ranging is up to 60dB.
Wavelength intelligent based on Orthogonal Double polarization phase shift keying modulation the most according to claim 2 selects equipment, it is characterised in that also includes outside RS232 communication interface, is connected with described FPGA module, for carrying out data communication with outside debugging software.
1 × 8 intelligence wavelength selecting device based on Orthogonal Double polarization phase-shift keying the most according to claim 7, it is characterised in that described outside RS232 communication interface is that SipexSP3232E type TTL turns 232 level integrated circuits.
Wavelength intelligent based on Orthogonal Double polarization phase shift keying modulation the most according to claim 2 selects equipment, it is characterised in that described liquid crystal on silicon module is HimaxHX7308 type reflecting active matrix silicon based liquid crystal screen.
Wavelength intelligent based on Orthogonal Double polarization phase-shift keying the most according to claim 2 selects equipment, it is characterised in that described FPGA module is PLD FLEX10K70.
11. wavelength intelligent based on Orthogonal Double polarization phase-shift keying according to claim 2 select equipment, it is characterised in that described FPGA module also include based on Orthogonal Double polarization phase-shift keyed signal modulation circuit, sram memory and program storage one or more.
12. wavelength intelligent based on Orthogonal Double polarization phase-shift keying according to claim 11 select equipment, it is characterized in that described being connected the while of including deserializer, the first multiplier, the second multiplier, quadrature carrier generator and adder, the first described multiplier and the second described multiplier difference based on Orthogonal Double polarization phase-shift keyed signal modulation circuit with described deserializer, described quadrature carrier generator and described adder.
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| CN201610141624.4A CN105827331A (en) | 2016-03-11 | 2016-03-11 | Orthogonal dual-polarization phase-shift keying modulation method and equipment based on orthogonal dual-polarization phase-shift keying modulation |
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| CN201610141624.4A CN105827331A (en) | 2016-03-11 | 2016-03-11 | Orthogonal dual-polarization phase-shift keying modulation method and equipment based on orthogonal dual-polarization phase-shift keying modulation |
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2016
- 2016-03-11 CN CN201610141624.4A patent/CN105827331A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014027204A1 (en) * | 2012-08-15 | 2014-02-20 | Thomas Swan And Co., Ltd. | Optical device and methods |
| CN103731198A (en) * | 2012-10-15 | 2014-04-16 | 住友电气工业株式会社 | Optical module used in optical communication systems, method of updating firmware of optical module used in optical communication systems, and trouble tracing system |
| CN104597572A (en) * | 2015-01-16 | 2015-05-06 | 华中科技大学 | LCOS (Liquid Crystal on Silicon) based wavelength selecting switch |
| CN205490580U (en) * | 2016-03-11 | 2016-08-17 | 上海鼎频通信技术有限公司 | Wavelength intelligence selection equipment based on modulation of quadrature dual -polarization phase shift keying |
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Application publication date: 20160803 |