CN106712852B - Current injection gain self-adjustment multicast photon radio frequency transmitter - Google Patents
Current injection gain self-adjustment multicast photon radio frequency transmitter Download PDFInfo
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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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/293—Signal power control
- H04B10/294—Signal power control in a multiwavelength system, e.g. gain equalisation
- H04B10/2942—Signal power control in a multiwavelength system, e.g. gain equalisation using automatic gain control [AGC]
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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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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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
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
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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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/293—Signal power control
- H04B10/2931—Signal power control using AGC
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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
- H04B10/501—Structural aspects
- H04B10/506—Multiwavelength transmitters
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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
- H04B10/564—Power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0221—Power control, e.g. to keep the total optical power constant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses an ultra-high-speed current injection gain self-adjustment multicast photon radio frequency transmitter, which comprises a narrow linewidth Laser-1, a narrow linewidth Laser-2, an optical fiber coupler A, CW Laser source, an optical fiber coupler B, an electro-optic MZM modulator, a high-speed N x Gbps data signal generator, an SOA current injection gain self-adjustment control module, a multiband WDM and an optical coupler C; the narrow linewidth lasers-1 and 2 are connected with an optical fiber coupler A, and the optical fiber coupler A is connected with an optical fiber coupler B for coupling output; the CW laser light source is connected with the electro-optic MZM modulator, and the electro-optic MZM modulator is connected with the optical fiber coupler B; the electro-optical MZM modulator is additionally provided with a high-speed N-Gbps data signal generator; the current injection gain automatic adjustment control module is respectively connected with the narrow linewidth Laser-1, the narrow linewidth Laser-2 and the SOA. The automatic adjustment function of the power gain of the laser spectrum information of the target wave band is realized independently through current injection, and the communication transmission optimization with low power consumption and low error rate is further realized.
Description
Technical Field
The invention belongs to the technical field of information and communication, and particularly relates to an ultra-high-speed current injection gain self-adjustment multicast photon radio frequency transmitter.
Background
With the rapid development of Information Communication Technology (ICT), ultra-large broadband optical communication and high-speed mobile access are receiving more and more attention from professionals, and the fusion of optical fiber technology and mobile technology is the development direction of future communication, and the deep fusion transformation of optical fiber communication and mobile communication is an essential way of the development of future information communication. Therefore, photon radio frequency signal conversion and processing, optical carrier frequency shift transmission and photon radio frequency link transmission technology are getting more and more attention to scientific researchers.
Chinese patent 201280010805.3 discloses coherent and compact supercontinuum light sources for the mid-infrared spectral range and exemplary applications thereof. Supercontinuum generation is based on the use of highly nonlinear fibers or waveguides. In at least one embodiment, a low noise mode-locked short pulse source is utilized to increase the coherence of the supercontinuum source. By using a passively mode-locked fiber or diode laser, a compact supercontinuum light source can be constructed. The wavelength tunable source may be constructed using suitable optical filters or frequency conversion sections. Highly coherent supercontinuum sources are also advantageous for coherent detection schemes and can improve the signal/noise ratio in lock-in detection schemes.
The scheme has high power, high energy consumption and higher error rate, and cannot guarantee quality.
Disclosure of Invention
The invention aims to provide a current injection gain self-adjustment multicast photon radio frequency transmitter and an implementation method thereof, which independently realize the function of automatically adjusting the power gain of laser spectrum information in a target wave band through current injection, thereby realizing the optimization of communication transmission with low power consumption and low error rate.
The technical scheme adopted by the invention is as follows: a current injection gain self-adjusting multicast photonic radio frequency transmitter comprising: narrow linewidth Laser-1, narrow linewidth Laser-2, optical fiber coupler A, CW Laser source, optical fiber coupler B, electro-optic MZM modulator, high-speed N Gbps data signal generator, SOA, current injection gain automatic regulation control module, multiband WDM and optical coupler C; the narrow linewidth lasers-1 and 2 are connected with an optical fiber coupler A, and the optical fiber coupler A is connected with an optical fiber coupler B for coupling output; the CW laser light source is connected with the electro-optic MZM modulator, and the electro-optic MZM modulator is connected with the optical fiber coupler B; the electro-optical MZM modulator is additionally provided with a high-speed N-Gbps data signal generator; the current injection gain automatic adjustment control module is respectively connected with the narrow linewidth Laser-1, the narrow linewidth Laser-2 and the SOA;
the center frequency of the narrow linewidth Laser-1 is 193.05THz, and the center frequency of the narrow linewidth Laser-2 is 193.10THz; the central frequency of the CW laser source is 193.00THz; the optical fiber coupler A and the optical fiber coupler B are 2:1 optical fiber couplers, and the optical coupler C is a 1:9 optical coupler;
the narrow linewidth Laser-1 and the narrow linewidth Laser-2 are coupled with each other through an optical fiber coupler A, an output optical wave signal is coupled with another optical carrier signal through an optical fiber coupler B, and the other optical carrier signal is formed by modulating high-speed data N x Gpbs data through an MZM photoelectric modulator through continuous Laser light waves with the center frequency of 193.00THz;
after the optical wave signals output by the optical fiber coupler B are subjected to nonlinear amplification processing by an SOA, photon wave signals in the frequency bands of 192.90THz, 192.95THz, 193.00THz, 193.05THz, 193.10THz, 193.15THz and 193.20THz are filtered by multi-band WDM wave division, wherein the photon wave signals in the frequency bands of 192.90THz, 192.95THz, 193.00THz and 193.20THz carry the same ultra-high-speed data information;
the photon wave signal is coupled and output through the optical coupler C, one part of the optical signal coupled and output through the optical coupler C is transmitted back to the current injection gain automatic adjustment control module for data regulation and control, and the other part is continuously output.
Further, the transmitter further comprises a laser channel power detection module, a digital-to-analog conversion module and an asynchronous serial time-sharing protocol packaging data transmission module, wherein the optical signals are subjected to laser channel power detection, calculation, ADC conversion, frame protocol packaging and asynchronous serial time-sharing transmission through the laser channel power detection module, the digital-to-analog conversion module and the asynchronous serial time-sharing protocol packaging data transmission module in the process of being transmitted back to the current injection gain automatic adjustment control module, so that each new-born laser spectrum channel gain value is provided for the current injection gain automatic adjustment control module in real time, comparison and judgment of a reference threshold value are facilitated, and then automatic adjustment control of the target channel optical wave gain is implemented.
By identifying the transmission mode (optical fiber, wireless and hybrid), the newly generated Laser spectrum multichannel optical coupling power is detected, calculated, processed and packaged and transmitted by a frame protocol, and the current injection gain automatic adjustment control module feeds back and controls the output optical power of the two narrow linewidth lasers and the SOA, so that the co-channel interference of the target photon carrier is reduced, and the communication transmission with the low bit error rate of the target channel is realized.
Further, the transmitter further comprises a dual-band WDM, an optoelectronic beat detector and a transmitting antenna, and the other part of the optical signal is transmitted through the dual-band WDM, the optoelectronic beat detector and the transmitting antenna.
Further, the multi-band Laser spectrum information is generated by amplifying the CW Laser light carrier carrying the high-speed data information through the nonlinear photon SOA by utilizing the narrow linewidth Laser-1 and the narrow linewidth Laser-2. (providing a nonlinear multiband coherent laser spectrum generation method)
Furthermore, three pure laser sources with the center frequencies of 193.05THz, 193.10THz and 193.15THz can be provided for a far-end transmitting device by utilizing the new laser spectrum information through wavelength division multiplexing and optical fiber remote transmission. (providing three pure laser sources for remote fiber optic transceiver devices)
Further, four different optical carrier channels with center frequencies of 192.90THz, 192.95THz, 193.00THz and 193.20THz can be provided by utilizing the new laser spectrum information through wavelength division multiplexing and optical fiber remote transmission to transmit modulated high-speed N×Gbps data information to a remote target device. (providing four fiber optic cable transports simultaneously for a communication system)
Furthermore, the new laser spectrum information can be utilized to generate wireless carrier signal sources of 50GHz, 100GHz, 200GHz, 250GHz and 300GHz carrying high-speed N-bps modulated data information through wavelength division multiplexing and photoelectric beat frequency detection conversion. (multicast photon radio frequency communication mode for simultaneously providing five millimeter wave band microwave wireless transmission for communication system)
Further, the high-speed n×gbps data information is used as a modulation signal of the 193THz optical carrier, and in the process of pulling the optical fiber to the far-end equipment, the high-speed n×gbps data optical frequency shift transmission of the 192.9THz, 192.95THz and 193.2THz optical carriers can be simultaneously realized.
Furthermore, the new laser spectrum information can be utilized to generate a 50GHz wireless carrier signal source carrying high-speed N-Gbps modulated data information through wavelength division multiplexing and photoelectric beat frequency detection conversion.
Furthermore, the new laser spectrum information can be utilized to generate a 100GHz wireless carrier signal source carrying high-speed N-Gbps modulated data information through wavelength division multiplexing and photoelectric beat frequency detection conversion.
Furthermore, the new laser spectrum information can be utilized to generate a 200GHz wireless carrier signal source carrying high-speed N-Gbps modulated data information through wavelength division multiplexing and photoelectric beat frequency detection conversion.
Furthermore, the new laser spectrum information can be utilized to generate a 250GHz wireless carrier signal source carrying high-speed N-Gbps modulated data information through wavelength division multiplexing and photoelectric beat frequency detection conversion.
The method provides a solution for the multicast communication special for strong anti-interference military industry, the future civil indoor and outdoor distribution system, the ultra-high speed wireless local area network and the high-speed photon radio frequency interconnection and intercommunication between novel adjacent base stations.
Drawings
The invention will now be described by way of example and with reference to the accompanying drawings in which:
fig. 1 is a schematic diagram of a scheme of a multicast photon radio frequency transmitter;
fig. 2 is a schematic block diagram of spectral output of a multicast photon rf transmitter;
FIG. 3 is a schematic block diagram of a 50GHz microwave signal output from the beat frequency conversion of 193.15THz and 193.20THz spectral signals;
FIG. 4 is a schematic block diagram of a 100GHz microwave signal output from the beat frequency conversion of 193.10THz and 193.20THz spectral signals;
FIG. 5 is a schematic block diagram of a 200GHz microwave signal output from 193.00THz and 193.20THz spectral signals by beat frequency conversion;
FIG. 6 is a schematic block diagram of a beat frequency conversion output 250GHz microwave signal for 192.95THz and 193.20THz spectral signals;
FIG. 7 is a schematic block diagram of a 300GHz microwave signal output from the beat frequency conversion of 192.90THz and 193.20THz spectral signals;
FIG. 8 is a schematic block diagram of a 50GHz microwave signal output from the beat frequency conversion of 192.95THz and 192.90THz spectral signals;
FIG. 9 is a schematic block diagram of a 100GHz microwave signal output from a beat frequency conversion of 192.90THz and 193.00THz spectral signals;
FIG. 10 is a schematic block diagram of a 200GHz microwave signal output from the beat frequency conversion of 192.90THz and 193.10THz spectral signals;
FIG. 11 is a schematic block diagram of a beat frequency conversion output 250GHz microwave signal for 192.90THz and 193.15THz spectral signals;
FIG. 12 is a schematic block diagram of a 50GHz microwave signal output from a beat frequency conversion of 192.95THz and 193.00THz spectral signals;
FIG. 13 is a schematic block diagram of a 100GHz microwave signal output from the beat frequency conversion of 192.95THz and 193.05THz spectral signals;
FIG. 14 is a schematic block diagram of a 200GHz microwave signal output from the beat frequency conversion of 192.95THz and 193.15THz spectral signals;
FIG. 15 is a schematic block diagram of a beat frequency converted output 250GHz microwave signal of 192.95THz and 193.20THz spectral signals;
FIG. 16 is a schematic block diagram of a 200GHz microwave signal output from 193.00THz and 193.20THz spectral signals by beat frequency conversion;
fig. 17 is a flowchart of the automatic adjustment control of the optical power gain of each laser channel.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
As shown in fig. 1, a current injection gain self-adjusting multicast photonic radio frequency transmitter includes: narrow linewidth Laser-1, narrow linewidth Laser-2, optical fiber coupler A, CW Laser source, optical fiber coupler B, electro-optic MZM modulator, high-speed N Gbps data signal generator, SOA (semiconductor optical amplifier), current injection gain automatic regulation control module, multiband WDM and optical coupler C201; the narrow linewidth lasers-1 and 2 are connected with an optical fiber coupler A, and the optical fiber coupler A is connected with an optical fiber coupler B for coupling output; the CW laser light source is connected with the electro-optic MZM modulator,
the electro-optic MZM modulator is connected with the optical fiber coupler B; the electro-optical MZM modulator is additionally provided with a high-speed N-Gbps data signal generator; the current injection gain automatic adjustment control module is respectively connected with the narrow linewidth Laser-1, the narrow linewidth Laser-2 and the SOA;
after the optical wave signals output by the optical fiber coupler B are amplified by the SOA, photon wave signals with the frequency band of not less than 7 are filtered by multiband WDM wave division; the photon wave signal is coupled and output through the optical coupler C201, one part of the optical signal coupled and output through the optical coupler C201 is transmitted back to the current injection gain automatic adjustment control module for data regulation and control, and the other part is continuously output.
The transmitter further comprises a laser channel power detection module, a digital-to-analog conversion module and an asynchronous serial time-sharing protocol packaging data transmission module, wherein the optical signals are subjected to laser channel power detection, calculation, ADC conversion, frame protocol packaging and asynchronous serial time-sharing transmission through the laser channel power detection module, the digital-to-analog conversion module and the asynchronous serial time-sharing protocol packaging data transmission module in the process of being transmitted back to the current injection gain automatic adjustment control module, so that each new laser spectrum channel gain value is provided for the current injection gain automatic adjustment control module in real time, comparison and judgment of a reference threshold value are facilitated, and then automatic adjustment control of the target channel light wave gain is implemented.
The working principle is as follows:
the narrow linewidth Laser-1 with the center frequency of 193.05THz and the narrow linewidth Laser-2 with the center frequency of 193.10THz pass through one 2:1 optical fiber coupler A, the output optical wave signal and another optical carrier signal pass through a second 2:1 optical fiber coupler B, and the other optical carrier signal is output by a continuous Laser tube optical wave (CW Laser source) with the center frequency of 193.00THz modulated by gigabit high-speed data (N x Gpbs) through an MZM photoelectric modulator. After the optical wave signals output by the second 2:1 optical fiber coupler B are subjected to nonlinear amplification processing by an SOA, photon wave signals in the frequency bands of 192.90THz, 192.95THz, 193.00THz, 193.05THz, 193.10THz, 193.15THz and 193.20THz are obtained through multi-band WDM wave division filtering, wherein the photon wavelets in the frequency bands of 192.90THz, 192.95THz, 193.00THz and 193.20THz carry the same gigabit ultra-high-speed data information.
Then, all photon wave signals are respectively coupled out by 10% through an optical coupler C201 with the optical power distribution ratio of 1:9 to carry out laser channel power detection, calculation, ADC conversion, frame protocol packaging and asynchronous serial time-sharing transmission, and each new-generation laser spectrum channel gain value is provided for an automatic current injection gain adjustment control module in real time. So as to facilitate comparison and judgment of the reference threshold value and further implement automatic regulation and control of the optical wave gain of the target channel. The transmitter function module then performs gain automatic adjustment control on each target laser channel output by the transmitter according to the optical power gain automatic adjustment control flow chart of each laser channel shown in fig. 17.
As shown in fig. 17, the current injection gain automatic adjustment control module automatically adjusts the control flow chart according to the optical power gain of each laser channel.
1. After the program starts, firstly judging the type of the ultra-high speed information transmission carrier, and judging whether signals output by the multicast photon radio frequency transmitter are transmitted by optical fiber wires, microwave wireless transmission or mixed two mediums as the carrier;
2. and then carrying out channel coupling optical power detection and ADC conversion, calculating the optical power of each channel, packaging and transmitting a frame protocol, receiving by a current injection gain automatic adjustment control module, comparing and judging the optical power of each channel with a corresponding value, comparing and judging whether the optical power value of each Laser channel is consistent with the corresponding value, if not, adjusting the injection current of the narrow linewidth Laser-1, the narrow linewidth Laser-2 and the SOA, and then carrying out re-flow detection, modulation and judgment again until the optical power value of each Laser channel is consistent with the corresponding value.
Here, it should be noted that:
(1) If only the optical fiber is used as a medium for simultaneously transmitting all signals, the transmission of photon radio frequency signals in the optical fiber is less interfered by the outside, and the optical fiber is designed according to key parameters of devices and modules, so that the bit error rate of the signal optical fiber transmission can be better optimized;
(2) If the optical fiber and the wireless microwave are mixed to be used as a medium for simultaneously transmitting all signals, the optical fiber and the wireless microwave can be designed according to key parameters of devices and modules;
(3) If only wireless microwaves are used as a medium for simultaneously transmitting all signals, the signal transmission is greatly interfered by the outside, the injection currents of the corresponding narrow linewidth Laser-1, the narrow linewidth Laser-2 and the SOA are regulated on the basis of the design of key parameters of a device and a module, and especially the injection current of the Laser light power with the center frequency of 193.10THz is relatively reduced by 2-3 dB (namely, the injection current of the Laser-2 is correspondingly reduced), so that the interference generated when the optical waves with the center frequencies of 193.00THz and 193.20THz which are output by the nonlinear of the SOA generate photoelectric beat frequency detection on other signals is reduced (because the newly generated optical waves with the center frequencies of 2x193.05-193.10 =193.00 fall on the modulated ultra-high-speed CW-Laser optical waves, and the newly generated optical waves with the center frequencies of 2x193.15-193.10 = 193.20THz fall on the optical carrier with the center frequency of 193.20THz carrying gigabit ultra-high-speed data information), and the error rate of the signal optical fiber transmission can be better optimized;
(4) If only one channel light wave is used, the relation between the channel light wave and the narrow linewidth Laser-1, the narrow linewidth Laser-2 and the CW Laser is determined, namely whether the channel light wave is one of the channel light wave, the narrow linewidth Laser-1, the narrow linewidth Laser-2 and the CW Laser or a new light wave generated by nonlinear optical amplification of two of the channel light wave, the narrow linewidth Laser-1, the narrow linewidth Laser-2 or the SOA is adjusted to inject current, and then the power of the target light wave is improved, so that the signal transmission performance is improved and the error rate is reduced.
In a word, by adjusting the injection current of the narrow linewidth Laser-1, the narrow linewidth Laser-2 or the SOA, the interference of the new photon radio frequency wave generated by the nonlinear optical amplification effect of the SOA on the photon signal with the same wave band is reduced, the intensity of the target light wave signal is improved, and the transmission error rate is reduced.
As shown in fig. 2, the spectral output schematic of the multicast photon rf transmitter is shown. The Laser waves with the center wavelengths of 193.05THz and 193.10THz are respectively amplified by nonlinear photons of the SOA to generate upper sidebands: 2x193.10-193.05 = 193.15THz center frequency, and the new center wave band is 193.15THz Laser wave phase coherent with the narrow linewidth Laser-1 and the narrow linewidth Laser-2 Laser wave, i.e. coherent with their phases.
The optical carrier signal with the center frequency of 193.00THz carrying the Gibbs ultra-high speed data and the narrow linewidth Laser-2 Laser light wave are amplified by nonlinear photons of an SOA, and the lower sideband is generated: the optical carrier signal of 2x193.00-193.10 = 192.90THz central frequency band and carrying the gigabit high-speed data is coherent with the phases of 193.00THz Laser light wave and narrow linewidth Laser-2 Laser light wave, namely, the phases of the new photon carrier and the new photon carrier are coherent.
The optical carrier signal with the center frequency of 193.00THz carrying the Gibbs ultra-high speed data and the narrow linewidth Laser-1 Laser light wave are amplified by nonlinear photons of an SOA, and the lower sideband is generated: the optical carrier signal of 2x193.00-193.05 = 192.95THz central frequency band and carrying the gigabit high-speed data is coherent with the phases of 193.00THz Laser light wave and narrow linewidth Laser-1 Laser light wave, namely, the phases of the optical carrier signal and the new optical carrier signal are coherent.
The optical carrier signal with the center frequency of 193.00THz carrying the Gibbs ultra-high speed data and Laser-2 Laser light waves are amplified by nonlinear photons of an SOA, and the upper sideband is generated as follows: the optical carrier signal of 2x193.10-193.00= 193.20THz central frequency band and carrying the gigabit high-speed data is coherent with the phase of 193.00THz Laser light wave and narrow linewidth Laser-2 Laser light wave, namely, the new photon carrier has coherence with the phases of the optical carrier signal.
Based on the principle of pairwise coherence and the coherence of the laser light waves, the method can further obtain from multiband optical wavelets output by multiband WDM: 193.15THz and 193.20THz central frequency band laser light wave phase coherence, 193.10THz and 193.20THz central frequency band laser light wave phase coherence, 193.00THz and 193.20THz central frequency band laser light wave phase coherence, 192.95THz and 193.20THz central frequency band laser light wave phase coherence, 192.90THz and 193.20THz central frequency band laser light wave phase coherence, 192.95THz and 192.90THz central frequency band laser light wave phase coherence, 192.90THz and 193.00THz central frequency band laser light wave phase coherence, 192.90THz and 193.10THz central frequency band laser light wave phase coherence, 192.90THz and 193.15THz central frequency band laser light wave phase coherence, 192.95THz and 193.00THz central frequency band laser light wave phase coherence, 192.90THz and 193.05THz central frequency band laser light wave phase coherence, 192.95THz and 193.15THz central frequency band laser light wave phase coherence, 192.95THz and 193.20THz central frequency band laser light wave phase coherence, 193.00THz and 193.20THz central frequency band laser light wave phase coherence.
The transmitter further comprises a dual-band WDM, an optoelectronic beat frequency detector and a transmitting antenna, and the other part of the optical signal is transmitted through the dual-band WDM, the optoelectronic beat frequency detector and the transmitting antenna. In order to obtain the ultra-high-speed modulated wireless microwave signal source, the phase coherent laser light wave signals are subjected to photoelectric beat frequency detection, filtering, amplification and antenna emission as shown in fig. 3-16.
As shown in fig. 3, 193.15THz and 193.20THz spectrum signals are subjected to beat frequency conversion to output 50GHz microwave signal schematic block diagram. The laser light wave with the center frequency of 193.15THz and the gigabit high-speed optical carrier wave with the center frequency of 193.20THz are subjected to dual-band WDM filtering and wave combination treatment, and then are subjected to conversion filtering and amplification treatment by an optoelectronic beat frequency detection module, so that a microwave broadband carrier signal with the center frequency of 193.20-193.15 =50 GHz and carrying gigabit ultra-high-speed data is generated, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 4, 193.10THz and 193.20THz spectrum signals are subjected to beat frequency conversion to output 100GHz microwave signal schematic block diagram. The laser light wave with the center frequency of 193.10THz and the gigabit high-speed optical carrier wave with the center frequency of 193.20THz are subjected to dual-band WDM filtering and wave combination treatment, and then are subjected to conversion filtering and amplification treatment by an optoelectronic beat frequency detection module, so that a microwave broadband carrier signal with the center frequency of 193.20-193.10 =100 GHz and carrying gigabit ultra-high-speed data is generated, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 5, 193.00THz and 193.20THz spectrum signals are subjected to beat frequency conversion to output 200GHz microwave signal schematic block diagram. The two gigabit high-speed optical carriers with the center frequencies of 193.00THz and 193.20THz are subjected to dual-band WDM filtering and wave combination treatment, and then subjected to conversion filtering and amplification treatment by an optoelectronic beat frequency detection module, so that a microwave broadband carrier signal with the center frequency of 193.20-193.00=200 GHz and carrying gigabit ultra-high-speed data is generated, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 6, 192.95THz and 193.20THz spectrum signals are subjected to beat frequency conversion to output 250GHz microwave signal schematic block diagram. The two gigabit high-speed optical carriers with the center frequencies of 192.95THz and 193.20THz are subjected to dual-band WDM filtering and wave combination treatment, and then subjected to conversion filtering and amplification treatment by a photoelectric beat frequency detection module, so as to generate a microwave broadband carrier signal with the center frequency of 193.20-192.95 =250 GHz and carrying gigabit ultra-high-speed data, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 7, 192.90THz and 193.20THz spectrum signals are subjected to beat frequency conversion to output 300GHz microwave signal schematic block diagram. The two gigabit high-speed optical carriers with the center frequencies of 192.90THz and 193.20THz are subjected to dual-band WDM filtering and wave combination treatment, and then subjected to conversion filtering and amplification treatment by a photoelectric beat frequency detection module, so as to generate a microwave broadband carrier signal with the center frequency of 193.20-192.90 =300 GHz and carrying gigabit ultra-high-speed data, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 8, 192.95THz and 192.90THz spectrum signals are subjected to beat frequency conversion to output a 50GHz microwave signal schematic block diagram. The two gigabit high-speed optical carriers with the center frequencies of 192.95THz and 192.90THz are subjected to dual-band WDM filtering and wave combination treatment, and then subjected to conversion filtering and amplification treatment by a photoelectric beat frequency detection module, so as to generate a microwave broadband carrier signal with the center frequency of 192.95-192.90 =50 GHz and carrying gigabit ultra-high-speed data, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 9, 192.90THz and 193.00THz spectrum signals are subjected to beat frequency conversion to output 100GHz microwave signal schematic block diagram. The two gigabit high-speed optical carriers with the center frequencies of 192.90THz and 193.00THz are subjected to dual-band WDM filtering and wave combination treatment, and then subjected to conversion filtering and amplification treatment by an optoelectronic beat frequency detection module, so that a microwave broadband carrier signal with the center frequency of 193.00-192.90 =100 GHz and carrying gigabit ultra-high-speed data is generated, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 10, 192.90THz and 193.10THz spectrum signals are subjected to beat frequency conversion to output 200GHz microwave signal schematic block diagram. The laser light wave with the center frequency of 193.10THz and the gigabit high-speed optical carrier wave with the center frequency of 192.90THz are subjected to dual-band WDM filtering and wave combination treatment, and then are subjected to conversion filtering and amplification treatment by an optoelectronic beat frequency detection module, so that a microwave broadband carrier signal with the center frequency of 193.10-192.90 =200 GHz and carrying gigabit ultra-high-speed data is generated, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 11, 192.90THz and 193.15THz spectrum signals are subjected to beat frequency conversion to output 250GHz microwave signal schematic block diagram. The laser light wave with the center frequency of 193.15THz and the gigabit high-speed optical carrier wave with the center frequency of 192.90THz are subjected to dual-band WDM filtering and wave combination treatment, and then are subjected to conversion filtering and amplification treatment by an optoelectronic beat frequency detection module, so that a microwave broadband carrier signal with the center frequency of 193.15-192.90 =250 GHz carrying gigabit ultra-high-speed data is generated, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 12, 192.95THz and 193.00THz spectrum signals are subjected to beat frequency conversion to output 50GHz microwave signal schematic block diagram. The two gigabit high-speed optical carriers with the center frequencies of 193.00THz and 192.95THz are subjected to dual-band WDM filtering and wave combination treatment, and then subjected to conversion filtering and amplification treatment by an optoelectronic beat frequency detection module, so that a microwave broadband carrier signal with the center frequency of 193.00-192.95 =50 GHz and carrying gigabit ultra-high-speed data is generated, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 13, 192.95THz and 193.05THz spectrum signals are subjected to beat frequency conversion to output 100GHz microwave signal schematic block diagram. The laser light wave with the center frequency of 193.05THz and the gigabit high-speed optical carrier wave with the center frequency of 192.95THz are subjected to dual-band WDM filtering and wave combination treatment, and then are subjected to conversion filtering and amplification treatment by an optoelectronic beat frequency detection module, so that a microwave broadband carrier signal with the center frequency of 193.05-192.95 =100 GHz and carrying gigabit ultra-high-speed data is generated, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 14, 192.95THz and 193.15THz spectrum signals are subjected to beat frequency conversion to output 200GHz microwave signal schematic block diagram. The laser light wave with the center frequency of 193.15THz and the gigabit high-speed optical carrier wave with the center frequency of 192.95THz are subjected to dual-band WDM filtering and wave combination treatment, and then are subjected to conversion filtering and amplification treatment by an optoelectronic beat frequency detection module, so that a microwave broadband carrier signal with the center frequency of 193.15-192.95 =200 GHz and carrying gigabit ultra-high-speed data is generated, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 15, 192.95THz and 193.20THz spectrum signals are subjected to beat frequency conversion to output 250GHz microwave signal schematic block diagram. The laser light wave with the center frequency of 193.20THz and the gigabit high-speed optical carrier wave with the center frequency of 192.95THz are subjected to dual-band WDM filtering and wave combination treatment, and then are subjected to conversion filtering and amplification treatment by an optoelectronic beat frequency detection module, so that a microwave broadband carrier signal with the center frequency of 193.20-192.95 =250 GHz carrying gigabit ultra-high-speed data is generated, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
As shown in fig. 16, 193.00THz and 193.20THz spectrum signals are subjected to beat frequency conversion to output 200GHz microwave signal schematic block diagram. The two gigabit high-speed optical carriers with the center frequencies of 193.00THz and 193.20THz are subjected to dual-band WDM filtering and wave combination treatment, and then subjected to conversion filtering and amplification treatment by an optoelectronic beat frequency detection module, so that a microwave broadband carrier signal with the center frequency of 193.20-193.00=200 GHz and carrying gigabit ultra-high-speed data is generated, and then the microwave broadband carrier signal is transmitted into a free space in the form of electromagnetic waves by an antenna.
Device key parameter design
The main parameters of the related key devices are as follows:
(1) CW laser light source
The center wavelength is 193.00THz, the emission power is 3dBm, the laser line width is 10MHz, and the initial phase is 0 degree.
(2) MZM modulator
The extinction ratio was 30dB, the symmetry factor was-1, and the modulation type was NRZ.
(3) Narrow linewidth Laser-1
The center wavelength is 193.05THz, the transmitting power is-8 dBm, the laser line width is 10MHz, and the initial phase is 0 degree.
(4) Narrow linewidth Laser-2
The center wavelength is 193.10THz, the transmitting power is 5dBm, the laser line width is 10MHz, and the initial phase is 0 degree.
(5) 2:1 optical fiber coupler
The signal attenuation is 0dB, and the narrow linewidth Laser attenuation is 0dB.
(6) SOA (semiconductor laser amplifier)
The injection current was 0.15A, the optical confinement factor was 0.15, the length was 0.5mm, the width was 0.003mm, the height was 0.00008mm, and the line width enhancement factor was 5.
(7) Multichannel WDM
The number of channels is 7, the bandwidth of the channels is 40GHz, the center frequencies are 192.90THz, 192.95THz, 193.00THz, 193.05THz, 193.10THz, 193.15THz and 193.20THz respectively, the insertion loss is 0dB, the filter type is Bessel, the filtering depth is 100dB, and the filter order is 2.
(8) 1:9 optical fiber coupler
The coupling ratio is 90:10, the insertion loss is 0.3dB, the signal attenuation is 0dB, and the narrow linewidth Laser attenuation is 0dB.
(9) Two-channel WDM.
The center frequencies of the two channels are shown in fig. 3-16, the bandwidth is twice (GHz) of the modulation rate value, the insertion loss is 0.5dB, the filtering depth is 80dB, the filtering type is Bessel, and the filtering order is 2 steps.
(10) Photoelectric detector
The responsivity is 1A/W, the dark current is 10nA, and the modulation bandwidth is 40GHz.
（11）SSMF
The reference wavelength was 1550nm, the attenuation coefficient was 0.2dB/Km, and the dispersion coefficient was 16.75ps/nm/Km.
The above embodiments are merely for fully disclosing the present invention, but not limiting the present invention, and should be considered as the scope of the disclosure of the present application based on the substitution of equivalent technical features of the inventive subject matter without creative work.
Claims (12)
1. A current injection gain self-adjusting multicast photonic radio frequency transmitter comprising: narrow linewidth Laser-1, narrow linewidth Laser-2, optical fiber coupler A, CW Laser source, optical fiber coupler B, electro-optic MZM modulator, high-speed N Gbps data signal generator, SOA, current injection gain automatic regulation control module, multiband WDM and optical coupler C; the narrow linewidth lasers-1 and 2 are connected with an optical fiber coupler A, and the optical fiber coupler A is connected with an optical fiber coupler B for coupling output; the CW laser light source is connected with the electro-optic MZM modulator, and the electro-optic MZM modulator is connected with the optical fiber coupler B; the electro-optical MZM modulator is additionally provided with a high-speed N-Gbps data signal generator; the current injection gain automatic adjustment control module is respectively connected with the narrow linewidth Laser-1, the narrow linewidth Laser-2 and the SOA;
the center frequency of the narrow linewidth Laser-1 is 193.05THz, and the center frequency of the narrow linewidth Laser-2 is 193.10THz; the central frequency of the CW laser source is 193.00THz; the optical fiber coupler A and the optical fiber coupler B are 2:1 optical fiber couplers, and the optical coupler C is a 1:9 optical coupler;
the narrow linewidth Laser-1 and the narrow linewidth Laser-2 are coupled with each other through an optical fiber coupler A, an output optical wave signal is coupled with another optical carrier signal through an optical fiber coupler B, and the other optical carrier signal is formed by modulating high-speed data N x Gpbs data through an MZM photoelectric modulator through continuous Laser light waves with the center frequency of 193.00THz;
after the optical wave signals output by the optical fiber coupler B are subjected to nonlinear amplification processing by an SOA, photon wave signals in the frequency bands of 192.90THz, 192.95THz, 193.00THz, 193.05THz, 193.10THz, 193.15THz and 193.20THz are filtered by multi-band WDM wave division, wherein the photon wave signals in the frequency bands of 192.90THz, 192.95THz, 193.00THz and 193.20THz carry the same ultra-high-speed data information;
the photon wave signal is coupled and output through the optical coupler C, one part of the optical signal coupled and output through the optical coupler C is transmitted back to the current injection gain automatic adjustment control module for data regulation and control, and the other part is continuously output.
2. The current injection gain self-adjusting multicast photonic radio frequency transmitter according to claim 1, wherein: the transmitter further comprises a laser channel power detection module, a digital-to-analog conversion module and an asynchronous serial time-sharing protocol packaging data transmission module, wherein the optical signals are subjected to laser channel power detection, calculation, ADC conversion, frame protocol packaging and asynchronous serial time-sharing transmission through the laser channel power detection module, the digital-to-analog conversion module and the asynchronous serial time-sharing protocol packaging data transmission module in the process of being transmitted back to the current injection gain automatic adjustment control module, so that each new laser spectrum channel gain value is provided for the current injection gain automatic adjustment control module in real time, comparison and judgment of a reference threshold value are facilitated, and then automatic adjustment control of the target channel light wave gain is implemented.
3. The current injection gain self-adjusting multicast photonic radio frequency transmitter according to claim 1, wherein: the transmitter further comprises a dual-band WDM, an optoelectronic beat frequency detector and a transmitting antenna, and the other part of the optical signal is transmitted through the dual-band WDM, the optoelectronic beat frequency detector and the transmitting antenna.
4. The current injection gain self-adjusting multicast photonic radio frequency transmitter according to claim 2, wherein: and generating multiband Laser spectrum information by amplifying the CW Laser light carrier wave carrying high-speed data information through a nonlinear photon SOA by utilizing the narrow linewidth Laser-1 and the narrow linewidth Laser-2.
5. The current injection gain self-adjusting multicast photonic radio frequency transmitter according to claim 4, wherein: the new-generation laser spectrum information can be utilized to provide three pure laser sources with the center frequencies of 193.05THz, 193.10THz and 193.15THz for remote transmitting equipment through wavelength division multiplexing and optical fiber remote transmission.
6. The current injection gain self-adjusting multicast photonic radio frequency transmitter according to claim 4, wherein: four different optical carrier channels with the center frequencies of 192.90THz, 192.95THz, 193.00THz and 193.20THz can be provided by utilizing the new laser spectrum information through wavelength division multiplexing and optical fiber remote transmission, and the modulated high-speed N x Gbps data information is transmitted to a remote target device.
7. The current injection gain self-adjusting multicast photonic radio frequency transmitter according to claim 4, wherein: the new-born laser spectrum information is utilized to generate 50GHz, 100GHz, 200GHz, 250GHz and 300GHz wireless carrier signal sources carrying high-speed N-Gbps modulated data information through wavelength division multiplexing and photoelectric beat frequency detection conversion.
8. The current injection gain self-adjusting multicast photonic radio frequency transmitter according to claim 4, wherein: the high-speed N-Gbps data information is used as a modulation signal of a 193THz optical carrier, and the high-speed N-Gbps data optical frequency shift transmission of 192.9THz, 192.95THz and 193.2THz optical carriers is realized in the process of pulling the optical fiber to a far-end device.
9. The current injection gain self-adjusting multicast photonic radio frequency transmitter according to claim 8, wherein: the new-generation laser spectrum information is utilized to generate a 50GHz wireless carrier signal source carrying high-speed N-Gbps modulated data information through wavelength division multiplexing and photoelectric beat frequency detection conversion.
10. The current injection gain self-adjusting multicast photonic radio frequency transmitter according to claim 8, wherein: the new generation laser spectrum information is utilized to generate a 100GHz wireless carrier signal source carrying high-speed N-Gbps modulated data information through wavelength division multiplexing and photoelectric beat frequency detection conversion.
11. The current injection gain self-adjusting multicast photonic radio frequency transmitter according to claim 8, wherein: the new-generation laser spectrum information is utilized to generate a 200GHz wireless carrier signal source carrying high-speed N-Gbps modulated data information through wavelength division multiplexing and photoelectric beat frequency detection conversion.
12. The current injection gain self-adjusting multicast photonic radio frequency transmitter according to claim 8, wherein: the new laser spectrum information is utilized to generate a 250GHz wireless carrier signal source carrying high-speed N-Gbps modulated data information through wavelength division multiplexing and photoelectric beat frequency detection conversion.
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| CN103780311A (en) * | 2014-01-15 | 2014-05-07 | 电子科技大学 | Light-source management method supporting WDM grid frequency standard of coherent light network |
| CN206698226U (en) * | 2017-03-01 | 2017-12-01 | 广东科学技术职业学院 | A kind of electric current injection gain self-regulation multicast photon radio-frequency emitter |
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