CN114401048B - Ultra-wideband microwave photon channelized receiving device and implementation method - Google Patents
Ultra-wideband microwave photon channelized receiving device and implementation method Download PDFInfo
- Publication number
- CN114401048B CN114401048B CN202111621284.2A CN202111621284A CN114401048B CN 114401048 B CN114401048 B CN 114401048B CN 202111621284 A CN202111621284 A CN 202111621284A CN 114401048 B CN114401048 B CN 114401048B
- Authority
- CN
- China
- Prior art keywords
- optical
- frequency
- output
- port
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 254
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 101150097208 MZM1 gene Proteins 0.000 claims description 29
- 230000010355 oscillation Effects 0.000 claims description 28
- 208000030963 borderline personality disease Diseases 0.000 claims description 13
- 206010006475 bronchopulmonary dysplasia Diseases 0.000 claims description 13
- 230000001629 suppression Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000011161 development Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 3
- 210000001520 comb Anatomy 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 229910052691 Erbium Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- H04B10/5165—Carrier suppressed; Single sideband; Double sideband or vestigial
-
- 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
- H04B10/671—Optical arrangements in the receiver for controlling the input optical signal
Abstract
The invention provides an ultra-wideband microwave photon channelizing receiving device and an implementation method, wherein a 3-line optical comb is generated by using one MZM, 9 optical local oscillators can be generated by matching two acousto-optic frequency shifters to shift the local oscillators to the left and right sides once, and in addition, I/Q photoelectric detection is adopted, so that simultaneous receiving of 18 sub-channels can be finally realized. The invention greatly reduces the requirements of the receiver on the number of the optical frequency comb teeth, can meet the development requirements of large working broadband and multiple sub-channels, has the advantages of simple structure and good reconfigurability, and has the characteristics of simple structure, easy realization, high optical comb utilization rate, and multiple sub-channels. The method not only greatly improves the working bandwidth of the traditional channelized receiver, avoids the electronic bottlenecks of large volume and mass, limited bandwidth, electromagnetic interference and the like of the traditional channelized system, and has important application value in the fields of radar systems, electronic warfare and the like.
Description
Technical Field
The invention relates to the field of optics, in particular to a microwave photon channelized receiving device and an implementation method.
Background
A channelized receiver is one of the effective methods for achieving broadband radio frequency signal reception. The method is widely applied in the fields of radar, electronic warfare and multifunctional broadband communication, and the traditional channelized receiver realizes signal transmission and demodulation in an electric field and has the defects of poor electromagnetic interference resistance, large volume and mass, small working bandwidth and the like. The microwave photon channelized receiver modulates the received radio frequency signals to an optical domain for transmission and processing, effectively avoids the limitation of electronic bottlenecks, and greatly improves the performance of the receiver. Common microwave photon channelized receivers can be divided into two classes: the direct channelizing scheme based on the optical filter array has the advantages that the scheme is simple in structure, but the optical filter is extremely high in requirement and can only obtain the amplitude information of signals, and the phase information cannot be obtained; the other is a channelizing scheme based on an optical frequency comb (comprising a double optical frequency comb principle), and the scheme can obtain amplitude and phase information of signals, but the number of sub-channels is limited by the number of comb teeth of the optical frequency comb, and the generation of the multi-comb line optical frequency comb with high flatness and outer band inhibition ratio is difficult, so that the development of a microwave photon channelized receiver is severely restricted. Therefore, how to increase the number of sub-channels and increase the instantaneous operating bandwidth of the receiver is a hotspot of current research.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an ultra-wideband microwave photon channelized receiving device and an implementation method. The current mainstream microwave photon channelized receiver is mostly based on the optical frequency comb principle, and although ten-line or more optical frequency combs can be generated by utilizing a method of cascading a horse-step modulator (Mach-Zehnder Modulator, MZM), the scheme generally requires a larger modulation index of the MZM and requires larger driving power or adopts a modulator with low half-wave voltage, the former increases the volume, the power consumption and the complexity of the system, and the latter is not mature enough. Therefore, although the optical frequency comb with more comb teeth can be theoretically generated by the scheme, the practical application is difficult. In order to solve the problem of small number of sub-channels, the MZM optical comb modulation technology and the acousto-optic frequency shift technology are combined, a 3-line optical comb is generated by using one MZM, 9 optical local oscillators can be generated by matching two acousto-optic frequency shifters (AOFS) to shift the frequencies of the local oscillators once, and in addition, I/Q photoelectric detection is adopted, so that simultaneous receiving of 18 sub-channels can be realized finally. The method greatly reduces the requirements of the receiver on the number of the optical frequency comb teeth, can meet the development requirements of large working broadband and multiple sub-channels, and has the advantages of simple structure and good reconfigurability.
The technical scheme adopted for solving the technical problems is as follows:
an ultra-wideband microwave photon channelizing receiving device is shown in fig. 1, and comprises a single-carrier Laser (LD), three Local Oscillator (LO) signals, a broadband Radio Frequency (RF) signal, two 3-line optical Frequency comb generating modules, a single-sideband modulating module, a Frequency shifting module, two erbium-doped fiber amplifiers (Erbium Doped Fiber Amplifier, EDFA), three optical splitters, two Acousto-optic Frequency shifters (Acousto-Optic Frequency Shifter, AOFS), three wavelength division multiplexers (Wavelength Division Multiplexer, WDM) and nine image rejection photoelectric receivers;
the LD output port is connected with the optical divider 1 and is divided into two paths, one path is a signal path, the other path is a local oscillation path, the signal path output port of the optical divider 1 is connected with the input port of the 3-line optical frequency comb generating module, the local oscillation signal (LO 1) is connected with the radio frequency port of the MZM1 in the 3-line optical frequency comb generating module, the output port of the 3-line optical frequency comb generating module is connected with the input port of the single sideband modulation module, the broadband RF signal is connected with the radio frequency port of the single sideband modulation module, the output port of the single sideband modulation module is connected with the input port of the EDFA1, the output port of the EDFA1 is connected with the optical divider 2 and is divided into nine paths, and the nine output ports of the optical divider 2 are respectively connected with one optical input end of the nine image rejection photoelectric receiver modules; the output end of a local oscillator circuit of the optical divider 1 is connected with an input port of a frequency shift module, a local oscillator (LO 2) is connected with a radio frequency port of the frequency shift module, an output port of the frequency shift module is connected with an input port of a 3-line optical frequency comb generating module, a local oscillator signal (LO 3) is connected with a radio frequency port of a 3-line optical frequency comb generating module MZM2, an output port of the 3-line optical frequency comb generating module is connected with an input port of an EDFA2, and an output port of the EDFA2 is connected with an input port of the optical divider 3 and is divided into three paths; the first path of output port is connected with the input port of the AOFS1, and the output port of the AOFS1 is connected with the input port of the WDM 1; the second path of output port of the optical splitter 3 is connected with the output port of the WDM2, the third path of output port of the optical splitter 3 is connected with the input port of the AOFS2, and the output port of the AOFS2 is connected with the input port of the WDM 3; a total of nine output ports of the three WDM are respectively input to the other input terminals of the nine image reject photo receivers.
The 3-wire optical frequency comb generating module is composed of MZM, namely MZM1 and MZM2, and is used for adjusting the modulation index of the MZM and the bias voltage of the direct current port to generate a flat 3-wire optical frequency comb.
The single sideband modulation module consists of a double parallel Ma Zeng modulator (Dual Parallel Mach-Zehnder Modulator, DPMZM) and a quadrature coupler, and RF signals output two paths of quadrature radio frequency signals after passing through the quadrature coupler are respectively fed into two radio frequency ports of the DPMZM, so that two sub-modulators of the DPMZM work at the minimum point and a main modulator works at the positive intersection point, and generation of carrier single sideband signals is inhibited.
The frequency shifting module comprises an intensity modulator (Intensity Modulator, IM) and an optical band pass filter (Optial Band Pass Filter, OBPF), and adjusts the offset voltage of the direct current port of the IM to enable the IM to work at the minimum offset point, namely output carrier suppression double sideband signals, and the OBPF is used for filtering out the positive first-order optical sideband, namely realizing the frequency shifting of the optical signal.
The acousto-optic frequency shifter comprises an acousto-optic modulator and a driving electric signal, the driving electric signal is connected with a radio frequency input end of the acousto-optic frequency shifter through a cable, two AOFS frequency shifts are identical, but AOFS1 is frequency shift downwards, and AOFS2 is frequency shift upwards.
The image rejection photoelectric receiver module is composed of an optical mixer (Optical Hybrid Coupler, OHC), two balanced photoelectric detectors (Balanced Photodiode, BPD), an electric mixer (Electrical Hybrid Couple, EHC) and two electric filters (Electrical Bandpass Filter, EBPF), four optical signals output by the OHC are divided into two groups, each group of optical signals is respectively connected with the two BPDs, two electrical signals output by the two BPDs are respectively connected with two input ports of the EHC, and the two electrical signals output by the EHC are respectively connected with one EBPF. The main functions are to mix the two input optical signals, to down-convert the signals to the same intermediate frequency after photoelectric detection, and to realize the separation of the image components.
The method for realizing the ultra-wideband microwave photon channelized receiving device comprises the following steps:
step 1: the single carrier laser output by LD is denoted as E in (t)＝E c sin(2πf c t), wherein E c Is the amplitude of the optical carrier wave, f c The frequency of the optical carrier is divided into an upper path and a lower path, wherein one path enters the MZM1, and the other path enters the IM;
step 2: the signal LO1 input to the radio frequency port of MZM1 is represented as: l (L) 1 (t)＝V LO1 sin(2πf LO1 t), wherein V LO1 And f LO1 The amplitude and frequency of the signal LO1 are respectively, and the DC bias voltage of the modulator is V dc1 The output light of MZM1 is expressed as:
wherein,for the modulator MZM1 modulation index, V π Is the half-wave voltage of the modulator, J n (. Cndot.) is the n-th order Bessel function of the first class,>when the modulation index is smaller, the high-order optical sidebands are suppressed, only the optical carrier and the positive and negative first-order optical sidebands need to be considered, when +.>I.e. m 1 The optical carrier wave is equal to the positive and negative first-order optical sideband amplitude when the frequency is equal to 0.296, so that the output frequency interval of the MZM1 is f LO1 Three-wire flat optical frequency comb with frequency f c -f LO1 ，f c ，f c +f LO1 ；
Step 3: the three-wire optical frequency comb generated by MZM1 is used as a new optical carrier wave to enter the DPMZM and then is frequency f RF The single sideband modulation of the broadband RF signal of (t) outputs three positive first-order optical sidebands with the frequency f respectively c -f LO1 +f RF (t)，f c +f RF (t)，f c +f LO1 +f RF (t)；
Step 4: the three positive first-order optical sidebands are amplified by the EDFA1 and then are divided into nine paths of optical signals (marks 1-9) by the optical divider 2, and the nine paths of optical signals are respectively input into nine image rejection photoelectric receivers;
step 5: the local oscillator signal LO2 input to the IM radio frequency input port is denoted as: l (L) 2 (t)＝V LO2 sin(2πf LO2 t), wherein V LO2 And f LO2 Setting direct current bias voltage of IM to make IM work at minimum transmission point, IM outputting positive and negative first order optical sidebands of carrier suppression, negative first order optical sidebands being filtered by OBPF, outputting positive first order optical sidebands with frequency f c +f LO2 ；
Step 6: the optical carrier wave after frequency shift enters the MZM2, and the frequency of a local oscillation signal LO3 input to a radio frequency port of the MZM2 is f LO3 The method comprises the steps of carrying out a first treatment on the surface of the Similar to step 2, MZM2 has the same modulation index and bias point as MZM1, with an MZM2 output frequency spacing of f LO3 Three-wire flat optical frequency comb with frequency f c +f LO2 -f LO3 ，f c +f LO2 ，f c +f LO2 +f LO3 ；
Step 7: the output three-wire optical frequency comb is divided into three paths by an optical divider 3 after being amplified by an EDFA 2; the first path is input into AOFS1 to shift down by delta f, and the 1-3 optical local oscillation frequencies output after WDM1 are f respectively c +f LO2 -f LO3 -Δf，f c +f LO2 -Δf，f c +f LO2 +f LO3 -Δf；
The second path does not shift frequency, and the output optical local oscillation frequencies of No. 4-6 after WDM2 are f respectively c +f LO2 -f LO3 ，f c +f LO2 ，f c +f LO2 +f LO3 ；
The third path carries out up shift delta f through AOFS2, and the output 7-9 optical local oscillation frequencies after WDM3 are f respectively c +f LO2 -f LO3 +Δf，f c +f LO2 +Δf，f c +f LO2 +f LO3 +Δf；
Step 8: the n optical signal output by the optical splitter 2 and the n optical local oscillator are input into two optical input ports of the n image rejection photoelectric receiver together, n is an integer with a value of 1-9, the optical signal and the optical local oscillator enter the OHC to realize orthogonal frequency mixing, then enter two BPDs, then realize image separation through the EHC, and then obtain intermediate frequency signals of two sub-channels through the EBPF.
In the present invention, each frequency setting needs to meet the following requirements:
the wideband RF signal has a start frequency f 0 The bandwidth is 18B, B is the sub-channel bandwidth, i.e. f RF The value range of (t) is [ f ] 0 ,f 0 +18B]The method comprises the steps of carrying out a first treatment on the surface of the The following relationship needs to be satisfied:
the WDM channel spacing needs to be greater than the highest frequency of the wideband RF signal, the channel spacing corresponds to LO1 and LO3, the three-wire optical comb modulated by upper LO1 and the three-wire optical comb modulated by lower LO3 need to be separable, and the WDM channel wideband is greater than 18B.
The resulting intermediate frequency signal has a frequency range [ B,2B ], and the passband of the EBPF is required to be not less than this range.
The invention has the beneficial effects that the simultaneous down-conversion receiving of 18 sub-channels can be realized by utilizing a simple 3-wire optical comb generating device and combining acousto-optic frequency shift and image rejection mixing, and compared with other optical comb-based channelizing schemes, the optical comb generating device has the characteristics of simple structure, easiness in realization, high optical comb utilization rate, and multiple sub-channels. The method integrates microwave photonics and channelized receiving technology, thereby greatly improving the working bandwidth of the traditional channelized receiver, avoiding the electronic bottlenecks of large volume and mass, limited bandwidth, electromagnetic interference and the like of the traditional channelized system, and having important application value in the fields of radar systems, electronic warfare and the like.
Drawings
FIG. 1 is a block diagram of an ultra wideband microwave photon channelized receiving device based on double optical comb, acousto-optic frequency shift and image rejection reception.
FIG. 2 is a simulation result, wherein FIG. 2 (a) is a spectral diagram of a 3-wire optical frequency comb output by MZM 1; FIG. 2 (b) is a spectral diagram of a 9GHz wideband RF signal after single sideband modulation; fig. 2 (c) is a spectrum diagram of a 3-wire local oscillator optical frequency comb output by the MZM 2.
Fig. 3 is a graph of IF signals output from one of the BPDs.
FIG. 4 is a graph of the 8 th and 11 th channels output by one of the image reject photo receivers, respectively; fig. 4 (a) shows an 8 th channel spectrum, and fig. 4 (b) shows an 11 th channel spectrum.
Fig. 5 is a constellation diagram obtained by the 8 th sub-channel down-conversion receiving demodulation.
Detailed Description
The invention will be further described with reference to the drawings and examples.
The invention combines the double optical comb, acousto-optic frequency shift and image rejection receiving technology, and utilizes the inherent advantages of large bandwidth, tunability and electromagnetic interference resistance of the photon technology to realize simultaneous receiving of ultra-large working bandwidth and 18 sub-channels. The method is based on a microwave photon electro-optic modulation technology, utilizes photoelectric devices such as a laser, a DPMZM, an MZM, an acousto-optic modulator and the like, and can realize simultaneous reception of 18 sub-channels by using a lower modulation index through overall frequency shift of the left and right of a 3-wire local oscillation optical frequency comb.
An ultra-wideband microwave photon channelizing receiving device is shown in fig. 1, and comprises a single-carrier Laser (LD), three Local Oscillator (LO) signals, a broadband Radio Frequency (RF) signal, two 3-line optical Frequency comb generating modules, a single-sideband modulating module, a Frequency shifting module, two erbium-doped fiber amplifiers (Erbium Doped Fiber Amplifier, EDFA), three optical splitters, two Acousto-optic Frequency shifters (Acousto-Optic Frequency Shifter, AOFS), three wavelength division multiplexers (Wavelength Division Multiplexer, WDM) and nine image rejection photoelectric receivers;
the LD output port is connected with the optical divider 1 and is divided into two paths, one path is a signal path, the other path is a local oscillation path, the signal path output port of the optical divider 1 is connected with the input port of the 3-line optical frequency comb generating module, the local oscillation signal (LO 1) is connected with the radio frequency port of the MZM1 in the 3-line optical frequency comb generating module, the output port of the 3-line optical frequency comb generating module is connected with the input port of the single sideband modulation module, the broadband RF signal is connected with the radio frequency port of the single sideband modulation module, the output port of the single sideband modulation module is connected with the input port of the EDFA1, the output port of the EDFA1 is connected with the optical divider 2 and is divided into nine paths, and the nine output ports of the optical divider 2 are respectively connected with one optical input end of the nine image rejection photoelectric receiver modules; the output end of a local oscillator circuit of the optical divider 1 is connected with an input port of a frequency shift module, a local oscillator (LO 2) is connected with a radio frequency port of the frequency shift module, an output port of the frequency shift module is connected with an input port of a 3-line optical frequency comb generating module, a local oscillator signal (LO 3) is connected with a radio frequency port of a 3-line optical frequency comb generating module MZM2, an output port of the 3-line optical frequency comb generating module is connected with an input port of an EDFA2, and an output port of the EDFA2 is connected with an input port of the optical divider 3 and is divided into three paths; the first path of output port is connected with the input port of the AOFS1, and the output port of the AOFS1 is connected with the input port of the WDM 1; the second path of output port of the optical splitter 3 is connected with the output port of the WDM2, the third path of output port of the optical splitter 3 is connected with the input port of the AOFS2, and the output port of the AOFS2 is connected with the input port of the WDM 3; a total of nine output ports of the three WDM are respectively input to the other input terminals of the nine image reject photo receivers.
The 3-wire optical frequency comb generating module is composed of MZM, namely MZM1 and MZM2, and is used for adjusting the modulation index of the MZM and the bias voltage of the direct current port to generate a flat 3-wire optical frequency comb.
The single sideband modulation module consists of a double parallel Ma Zeng modulator (Dual Parallel Mach-Zehnder Modulator, DPMZM) and a quadrature coupler, and RF signals output two paths of quadrature radio frequency signals after passing through the quadrature coupler are respectively fed into two radio frequency ports of the DPMZM, so that two sub-modulators of the DPMZM work at the minimum point and a main modulator works at the positive intersection point, and generation of carrier single sideband signals is inhibited.
The frequency shifting module comprises an intensity modulator (Intensity Modulator, IM) and an optical band pass filter (Optial Band Pass Filter, OBPF), and adjusts the offset voltage of the direct current port of the IM to enable the IM to work at the minimum offset point, namely output carrier suppression double sideband signals, and the OBPF is used for filtering out the positive first-order optical sideband, namely realizing the frequency shifting of the optical signal.
The acousto-optic frequency shifter comprises an acousto-optic modulator and a driving electric signal, the driving electric signal is connected with a radio frequency input end of the acousto-optic frequency shifter through a cable, two AOFS frequency shifts are identical, but AOFS1 is frequency shift downwards, and AOFS2 is frequency shift upwards.
The image rejection photoelectric receiver module is composed of an optical mixer (Optical Hybrid Coupler, OHC), two balanced photoelectric detectors (Balanced Photodiode, BPD), an electric mixer (Electrical Hybrid Couple, EHC) and two electric filters (Electrical Bandpass Filter, EBPF), four optical signals output by the OHC are divided into two groups, each group of optical signals is respectively connected with the two BPDs, two electrical signals output by the two BPDs are respectively connected with two input ports of the EHC, and the two electrical signals output by the EHC are respectively connected with one EBPF. The main functions are to mix the two input optical signals, to down-convert the signals to the same intermediate frequency after photoelectric detection, and to realize the separation of the image components.
The method for realizing the ultra-wideband microwave photon channelized receiving device comprises the following steps:
step 1: the single carrier laser output by LD is denoted as E in (t)＝E c sin(2πf c t), wherein E c Is the amplitude of the optical carrier wave, f c Is the frequency of the optical carrier, the optical carrier is divided into an upper path and a lower path, one path enters the MZM1,the other path enters IM;
step 2: the signal LO1 input to the radio frequency port of MZM1 is represented as: l (L) 1 (t)＝V LO1 sin(2πf LO1 t), wherein V LO1 And f LO1 The amplitude and frequency of the signal LO1 are respectively, and the DC bias voltage of the modulator is V dc1 The output light of MZM1 is expressed as:
wherein,for the modulator MZM1 modulation index, V π Is the half-wave voltage of the modulator, J n (. Cndot.) is the n-th order Bessel function of the first class,>when the modulation index is smaller, the high-order optical sidebands are suppressed, only the optical carrier and the positive and negative first-order optical sidebands need to be considered, when +.>I.e. m 1 The optical carrier wave is equal to the positive and negative first-order optical sideband amplitude when the frequency is equal to 0.296, so that the output frequency interval of the MZM1 is f LO1 Three-wire flat optical frequency comb with frequency f c -f LO1 ，f c ，f c +f LO1 ；
Step 3: the three-wire optical frequency comb generated by MZM1 is used as a new optical carrier wave to enter the DPMZM and then is frequency f RF The single sideband modulation of the broadband RF signal of (t) outputs three positive first-order optical sidebands with the frequency f respectively c -f LO1 +f RF (t)，f c +f RF (t)，f c +f LO1 +f RF (t)；
Step 4: the three positive first-order optical sidebands are amplified by the EDFA1 and then are divided into nine paths of optical signals (marks 1-9) by the optical divider 2, and the nine paths of optical signals are respectively input into nine image rejection photoelectric receivers;
step 5: the local oscillator signal LO2 input to the IM radio frequency input port is denoted as: l (L) 2 (t)＝V LO2 sin(2πf LO2 t), wherein V LO2 And f LO2 Setting direct current bias voltage of IM to make IM work at minimum transmission point, IM outputting positive and negative first order optical sidebands of carrier suppression, negative first order optical sidebands being filtered by OBPF, outputting positive first order optical sidebands with frequency f c +f LO2 ；
Step 6: the optical carrier wave after frequency shift enters the MZM2, and the frequency of a local oscillation signal LO3 input to a radio frequency port of the MZM2 is f LO3 The method comprises the steps of carrying out a first treatment on the surface of the Similar to step 2, MZM2 has the same modulation index and bias point as MZM1, with an MZM2 output frequency spacing of f LO3 Three-wire flat optical frequency comb with frequency f c +f LO2 -f LO3 ，f c +f LO2 ，f c +f LO2 +f LO3 ；
Step 7: the output three-wire optical frequency comb is divided into three paths by an optical divider 3 after being amplified by an EDFA 2; the first path is input into AOFS1 to shift down by delta f, and the 1-3 optical local oscillation frequencies output after WDM1 are f respectively c +f LO2 -f LO3 -Δf，f c +f LO2 -Δf，f c +f LO2 +f LO3 -Δf；
The second path does not shift frequency, and the output optical local oscillation frequencies of No. 4-6 after WDM2 are f respectively c +f LO2 -f LO3 ，f c +f LO2 ，f c +f LO2 +f LO3 ；
The third path carries out up shift delta f through AOFS2, and the output 7-9 optical local oscillation frequencies after WDM3 are f respectively c +f LO2 -f LO3 +Δf，f c +f LO2 +Δf，f c +f LO2 +f LO3 +Δf；
Step 8: the n optical signal output by the optical splitter 2 and the n optical local oscillator are input into two optical input ports of the n image rejection photoelectric receiver together, n is an integer with a value of 1-9, the optical signal and the optical local oscillator enter the OHC to realize orthogonal frequency mixing, then enter two BPDs, then realize image separation through the EHC, and then obtain intermediate frequency signals of two sub-channels through the EBPF.
In the present invention, each frequency setting needs to meet the following requirements:
the wideband RF signal has a start frequency f 0 The bandwidth is 18B, B is the sub-channel bandwidth, i.e. f RF The value range of (t) is [ f ] 0 ,f 0 +18B]The method comprises the steps of carrying out a first treatment on the surface of the The following relationship needs to be satisfied:
the WDM channel spacing needs to be greater than the highest frequency of the wideband RF signal, the channel spacing corresponds to LO1 and LO3, the three-wire optical comb modulated by upper LO1 and the three-wire optical comb modulated by lower LO3 need to be separable, and the WDM channel wideband is greater than 18B.
The resulting intermediate frequency signal has a frequency range [ B,2B ], and the passband of the EBPF is required to be not less than this range.
In the embodiment of the invention, the following steps are included:
1) LD: for outputting single carrier laser;
2) MZM: for generating 3-wire optical frequency combs;
3) DPMZM: carrier-suppressed single sideband modulation for implementing a wideband RF signal;
4) EDFA: the power amplifier is used for amplifying the power of the optical signal output after the electro-optical modulation and compensating the power attenuation of the electrical signal after the electrical signal is converted into the optical signal;
5) Frequency shift module (including IM and OBPF): the optical carrier wave is used for frequency shifting of the optical carrier wave of the downlink local oscillation path;
6) An optical splitter: the optical signal branching circuit is used for optical signal branching;
7) WDM: the comb teeth are used for independently dividing the optical frequency comb;
8) AOFS: the frequency shifter is used for integrally shifting the frequency of the local oscillator optical frequency comb.
9) Image reject photo-electric receiver: the optical local oscillator is used for down-converting the optical signals of the upper path and the optical local oscillators of the lower path to the same intermediate frequency, and demodulating after restraining the image signals in the same intermediate frequency range.
Examples:
and performing simulation analysis on the 18 sub-channels and the ultra-wideband microwave photon channelized receiving scheme by using optical system simulation software VPItransmissionMaker.
The devices required in the simulation include: local oscillator signal sources, broadband RF signal sources, LD, EDFA, AOFS, DPMZM, IM, MZM, WDM and other opto-electronic devices. The main simulation parameters of the system are configured as follows:
● LD: frequency f c 193.1THz, 40mw power, relative intensity noise-155 dB/Hz, line width 100kHz;
● Local oscillation signal LO1: frequency f LO1 40GHz, 10dBm power;
● Broadband RF signal: the power is 0dBm, the frequency range is 10-19GHz, namely the initial frequency f 0 The bandwidth is 10GHz and 9GHz, 18 sub-channels are divided, the bandwidth B of each sub-channel is 0.5GHz, and the signal format is 16-order quadrature amplitude modulation (16 QAM);
● Local oscillation signal LO2: frequency f LO2 14.5GHz, 10dBm power;
● Local oscillation signal LO3: frequency f LO3 43GHz, 10dBm power;
● DPMZM: half-wave voltage 3.5V, insertion loss 5dB, extinction ratio 30dB;
● MZM: half-wave voltage 3.5V, insertion loss 5dB, extinction ratio 30dB;
● IM: half-wave voltage 3.5V, insertion loss 5dB, extinction ratio 30dB;
● EDFA: the output power is 20dBm;
● AOFS: Δf is 0.5GHz, namely AOFS1 shifts down by 0.5GHz and AOFS2 shifts up by 0.5GHz;
● WDM: wavelength interval 40GHz;
● EBPF: the passband range is 0.5-1GHz.
The operation steps are as follows:
step 1: the LD generates a continuous light wave with an operating frequency of 193.1THz, which is divided into two paths as carrier wave power and then enters the upper and lower paths respectively.
Step 2: the upper optical carrier is input to the MZM1 as a signal path and modulated by a local oscillation frequency signal LO1, the modulation index of the MZM1 is set to be 0.296, and a bias point is tuned to obtain a 3-wire optical frequency comb with comb teeth of 40GHz, as shown in fig. 2 (a);
step 3: the 3-wire optical frequency comb enters the DPMZM and is modulated by a broadband RF signal with the frequency of 10-19GHz, so that the DPMZM works in a carrier suppression single sideband state, and the DPMZM outputs a positive first-order optical sideband of the broadband RF signal, as shown in fig. 2 (b).
Step 4: the positive first-order optical sideband is amplified by the EDFA, the output power is 20dBm, and the amplified positive first-order optical sideband is divided into nine paths by the optical divider and is used as a signal path to be respectively input into nine image rejection photoelectric receivers.
Step 5: the downlink optical carrier is used as an input to the IM and is subjected to carrier suppression double-sideband modulation by the local oscillator signal LO2, and a positive first-order optical sideband is obtained after the optical carrier passes through the OBPF, so that the upward frequency shift of the optical carrier is realized by 14.5GHz.
Step 6: the optical carrier after the right frequency shift enters the MZM2 and is modulated by a local oscillation signal LO2, the frequency of the LO2 is 43GHz, and a 3-wire local oscillation optical frequency comb with the comb teeth of 43GHz can be obtained by setting the modulation index which is the same as that of the step 2, as shown in the figure 2 (c).
Step 7: the output 3-wire local oscillation optical comb is amplified by EDFA and then is divided into three paths by an optical divider.
Step 8: the first path of three-line optical comb separated by the optical splitter is input into an AOFS1 and is wholly shifted down by 0.5GHz, and then the three-line optical comb enters the WDM1 and is separated into three paths of independent optical local oscillators.
Step 9: the second three-line optical comb separated by the lower route optical branching device directly enters the WDM2 and is separated into three independent optical local oscillators.
Step 10: the third optical comb separated by the lower route optical branching device is input into the AOFS2 and is shifted up by 0.5GHz, and then the third optical comb enters the WDM3 and is separated into three independent optical local oscillators.
Step 11: one input end of each image rejection photoelectric receiver receives one of the 9 optical signals on the way, and the other receiving end receives one of the 9 optical local oscillators on the way. Each group of optical signals and optical local oscillators enter the OHC to realize optical mixing, then enter two BPDs to perform balanced detection, and down-convert to obtain two intermediate frequency signals, wherein one frequency spectrum is shown in figure 3.
Step 12: the two intermediate frequency signals are input into the EHC to realize image rejection, and then two sub-channel signals with the frequency range of 0.5-1GHz are obtained through the EBPF. The spectrum of the 8 th channel and the 11 th channel output by one image rejection photoelectric receiver is shown in fig. 4, and the constellation diagram after demodulation of the 8 th channel intermediate frequency signal is shown in fig. 5, so that the demodulated 16QAM signal can be seen to be more ideal.
Step 13: the reception process of the other sub-channels is the same as in steps 11-12.
The above embodiments are merely examples of the present invention, and are not intended to limit the scope of the present invention, and it should be noted that, for those skilled in the art, equivalent modifications and substitutions can be made on the disclosure of the present invention, and the number of optical combs, the number of channels, the bandwidth of sub-channels, the carrier frequency, the local oscillation frequencies, the intermediate frequency, the WDM channel interval, the acousto-optic shift frequency, the optical carrier frequency and the power can be changed. Such equivalent variations, substitutions, and adjustments of various device parameters should also be considered to be within the scope of the present invention.
Claims (8)
1. The utility model provides an ultra wide band microwave photon channelizing receiving arrangement, includes single carrier laser, three local oscillator signal, broadband radio frequency signal, two 3 line optical frequency comb generation module, single sideband modulation module, shift frequency module, two erbium-doped fiber amplifiers, three optical divider, two acousto-optic frequency shifters, three wavelength division multiplexer and nine image rejection photoelectric receiver, its characterized in that:
the LD output port is connected with the optical divider 1 and is divided into two paths, one path is a signal path, the other path is a local oscillation path, the signal path output port of the optical divider 1 is connected with the input port of the 3-line optical frequency comb generating module, the local oscillation signal LO1 is connected with the radio frequency port of the MZM1 in the 3-line optical frequency comb generating module, the output port of the 3-line optical frequency comb generating module is connected with the input port of the single-sideband modulating module, the broadband RF signal is connected with the radio frequency port of the single-sideband modulating module, the output port of the single-sideband modulating module is connected with the input port of the EDFA1, the output port of the EDFA1 is connected with the optical divider 2 and then divided into nine paths, and the nine output ports of the optical divider 2 are respectively connected with one optical input end of the nine image rejection photoelectric receiver modules; the output end of a local oscillator circuit of the optical divider 1 is connected with an input port of a frequency shift module, the local oscillator LO2 is connected with a radio frequency port of the frequency shift module, the output port of the frequency shift module is connected with an input port of a 3-line optical frequency comb generating module, the local oscillator LO3 is connected with a radio frequency port of a 3-line optical frequency comb generating module MZM2, the output port of the 3-line optical frequency comb generating module is connected with an input port of an EDFA2, and the output port of the EDFA2 is connected with an input port of the optical divider 3 and is divided into three paths; the first path of output port is connected with the input port of the AOFS1, and the output port of the AOFS1 is connected with the input port of the WDM 1; the second path of output port of the optical splitter 3 is connected with the output port of the WDM2, the third path of output port of the optical splitter 3 is connected with the input port of the AOFS2, and the output port of the AOFS2 is connected with the input port of the WDM 3; a total of nine output ports of the three WDM are respectively input to the other input terminals of the nine image reject photo receivers.
2. The ultra-wideband microwave photon channelized receiver of claim 1 wherein:
the 3-wire optical frequency comb generating module is composed of MZM, namely MZM1 and MZM2, and is used for adjusting the modulation index of the MZM and the bias voltage of the direct current port to generate a flat 3-wire optical frequency comb.
3. The ultra-wideband microwave photon channelized receiver of claim 1 wherein:
the single sideband modulation module consists of a double parallel Ma Zeng modulator and a quadrature coupler, and RF signals are output through the quadrature coupler to two paths of quadrature radio frequency signals which are respectively fed into two radio frequency ports of the DPMZM, so that two sub-modulators of the DPMZM work at a minimum point and a main modulator works at a positive intersection point, and generation of carrier single sideband signals is inhibited.
4. The ultra-wideband microwave photon channelized receiver of claim 1 wherein:
the frequency shifting module comprises an intensity modulator and an optical band pass filter, and adjusts the offset voltage of the direct current port of the IM, so that the IM works at the minimum offset point, namely, a carrier suppression double-sideband signal is output, and the OBPF is utilized to filter out the positive first-order optical band, namely, the frequency shifting of the optical signal is realized.
5. The ultra-wideband microwave photon channelized receiver of claim 1 wherein:
the acousto-optic frequency shifter comprises an acousto-optic modulator and a driving electric signal, the driving electric signal is connected with a radio frequency input end of the acousto-optic frequency shifter through a cable, two AOFS frequency shifts are identical, but AOFS1 is frequency shift downwards, and AOFS2 is frequency shift upwards.
6. The ultra-wideband microwave photon channelized receiver of claim 1 wherein:
the image rejection photoelectric receiver module consists of an optical mixer, two balanced photoelectric detectors, an electric mixer and two electric filters, four optical signals output by the OHC are divided into two groups, each group of optical signals is respectively connected with two BPDs, two electric signals output by the two BPDs are respectively connected with two input ports of the EHC, and two electric signals output by the EHC are respectively connected with one EBPF; the main functions are to mix the two input optical signals, to down-convert the signals to the same intermediate frequency after photoelectric detection, and to realize the separation of the image components.
7. A method for implementing an ultra wideband microwave photon channelized receiver apparatus according to claim 1, comprising the steps of:
step 1: the single carrier laser output by LD is denoted as E in (t)＝E c sin(2πf c t), wherein E c Is the amplitude of the optical carrier wave, f c The frequency of the optical carrier is divided into an upper path and a lower path, wherein one path enters the MZM1, and the other path enters the IM;
step 2: the signal LO1 input to the radio frequency port of MZM1 is represented as: l (L) 1 (t)＝V LO1 sin(2πf LO1 t), wherein V LO1 And f LO1 The amplitude and frequency of the signal LO1, respectively, the DC bias of the modulatorIs pressed into V dc1 The output light of MZM1 is expressed as:
wherein,for the modulator MZM1 modulation index, V π Is the half-wave voltage of the modulator, J n (. Cndot.) is the n-th order Bessel function of the first class,>when the modulation index is smaller, the high-order optical sidebands are suppressed, only the optical carrier and the positive and negative first-order optical sidebands need to be considered, when +.>I.e. m 1 The optical carrier wave is equal to the positive and negative first-order optical sideband amplitude when the frequency is equal to 0.296, so that the output frequency interval of the MZM1 is f LO1 Three-wire flat optical frequency comb with frequency f c -f LO1 ，f c ，f c +f LO1 ；
Step 3: the three-wire optical frequency comb generated by MZM1 is used as a new optical carrier wave to enter the DPMZM and then is frequency f RF The single sideband modulation of the broadband RF signal of (t) outputs three positive first-order optical sidebands with the frequency f respectively c -f LO1 +f RF (t)，f c +f RF (t)，f c +f LO1 +f RF (t)；
Step 4: the three positive first-order optical sidebands are amplified by the EDFA1 and then are divided into nine paths of optical signals (marks 1-9) by the optical divider 2, and the nine paths of optical signals are respectively input into nine image rejection photoelectric receivers;
step 5: the local oscillator signal LO2 input to the IM radio frequency input port is denoted as: l (L) 2 (t)＝V LO2 sin(2πf LO2 t), wherein V LO2 And f LO2 Setting direct current bias voltage of IM to make IM work at minimum transmission point, IM output carrier suppressionPositive and negative first-order optical sidebands, the negative first-order optical sidebands are filtered by the OBPF, the positive first-order optical sidebands are output, and the frequency is f c +f LO2 ；
Step 6: the optical carrier wave after frequency shift enters the MZM2, and the frequency of a local oscillation signal LO3 input to a radio frequency port of the MZM2 is f LO3 The method comprises the steps of carrying out a first treatment on the surface of the Similar to step 2, MZM2 has the same modulation index and bias point as MZM1, with an MZM2 output frequency spacing of f LO3 Three-wire flat optical frequency comb with frequency f c +f LO2 -f LO3 ，f c +f LO2 ，f c +f LO2 +f LO3 ；
Step 7: the output three-wire optical frequency comb is divided into three paths by an optical divider 3 after being amplified by an EDFA 2; the first path is input into AOFS1 to shift down by delta f, and the 1-3 optical local oscillation frequencies output after WDM1 are f respectively c +f LO2 -f LO3 -Δf，f c +f LO2 -Δf，f c +f LO2 +f LO3 -Δf；
The second path does not shift frequency, and the output optical local oscillation frequencies of No. 4-6 after WDM2 are f respectively c +f LO2 -f LO3 ，f c +f LO2 ，f c +f LO2 +f LO3 ；
The third path carries out up shift delta f through AOFS2, and the output 7-9 optical local oscillation frequencies after WDM3 are f respectively c +f LO2 -f LO3 +Δf，f c +f LO2 +Δf，f c +f LO2 +f LO3 +Δf；
Step 8: the n optical signal output by the optical splitter 2 and the n optical local oscillator are input into two optical input ports of the n image rejection photoelectric receiver together, n is an integer with a value of 1-9, the optical signal and the optical local oscillator enter the OHC to realize orthogonal frequency mixing, then enter two BPDs, then realize image separation through the EHC, and then obtain intermediate frequency signals of two sub-channels through the EBPF.
8. The method for implementing the ultra-wideband microwave photon channelized receiving device according to claim 1, wherein: each frequency setting needs to meet the following requirements:
the wideband RF signal has a start frequency f 0 The bandwidth is 18B, B is the sub-channel bandwidth, i.e. f RF The value range of (t) is [ f ] 0 ,f 0 +18B]The method comprises the steps of carrying out a first treatment on the surface of the The following relationship needs to be satisfied:
the WDM channel interval needs to be larger than the highest frequency of the broadband RF signal, the channel interval corresponds to LO1 and LO3, the three-wire optical comb modulated by the upper LO1 and the three-wire optical comb modulated by the lower LO3 can be separated, and the broadband of the WDM channel needs to be larger than 18B;
the resulting intermediate frequency signal has a frequency range [ B,2B ], and the passband of the EBPF is required to be not less than this range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111621284.2A CN114401048B (en) | 2021-12-28 | 2021-12-28 | Ultra-wideband microwave photon channelized receiving device and implementation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111621284.2A CN114401048B (en) | 2021-12-28 | 2021-12-28 | Ultra-wideband microwave photon channelized receiving device and implementation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114401048A CN114401048A (en) | 2022-04-26 |
| CN114401048B true CN114401048B (en) | 2024-01-16 |
Family
ID=81229170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111621284.2A Active CN114401048B (en) | 2021-12-28 | 2021-12-28 | Ultra-wideband microwave photon channelized receiving device and implementation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114401048B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7245833B1 (en) * | 2002-11-15 | 2007-07-17 | Itt Manufacturing Enterprises, Inc. | Photonic channelized RF receiver employing dense wavelength division multiplexing |
| EP2343840A1 (en) * | 2010-01-12 | 2011-07-13 | Alcatel Lucent | Method, device and optical node for coherent reception of an optical signal |
| CN107231160A (en) * | 2017-07-10 | 2017-10-03 | 南京航空航天大学 | Microwave photon image frequency suppresses frequency mixing method and device |
| CN108964779A (en) * | 2018-07-23 | 2018-12-07 | 南京航空航天大学 | Channelized receiving method and device based on the vibration of frequency spectrum intertexture trimmed book |
| CN110061781A (en) * | 2018-01-19 | 2019-07-26 | 伊格尔科技有限责任公司 | Use the method and apparatus of the radio frequency photon spectrometer of frequency comb |
| CN111181683A (en) * | 2020-01-08 | 2020-05-19 | 中国船舶重工集团公司第七二四研究所 | Device and design method of ultra-wideband receiver based on microwave photons |
| CN111525963A (en) * | 2020-04-10 | 2020-08-11 | 东南大学 | Integrated structure of coherent channelized receiver |
| CN111541492A (en) * | 2020-04-24 | 2020-08-14 | 咸阳师范学院 | Multichannel expanded ultra-wideband radio-frequency channelized receiving device and implementation method |
| CN112134624A (en) * | 2019-06-24 | 2020-12-25 | 西安电子科技大学 | Efficient microwave photon channelized receiving method |
| CN112165361A (en) * | 2020-09-29 | 2021-01-01 | 中国船舶重工集团公司第七二四研究所 | Optical channelization device and method with tunable frequency range |
| US11051089B1 (en) * | 2020-03-27 | 2021-06-29 | The Boeing Company | Microwave photonics enabled beam-forming and channelization |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10498453B2 (en) * | 2017-07-21 | 2019-12-03 | Imra America, Inc. | Integrated photonic microwave transceiver system |
-
2021
- 2021-12-28 CN CN202111621284.2A patent/CN114401048B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7245833B1 (en) * | 2002-11-15 | 2007-07-17 | Itt Manufacturing Enterprises, Inc. | Photonic channelized RF receiver employing dense wavelength division multiplexing |
| EP2343840A1 (en) * | 2010-01-12 | 2011-07-13 | Alcatel Lucent | Method, device and optical node for coherent reception of an optical signal |
| CN107231160A (en) * | 2017-07-10 | 2017-10-03 | 南京航空航天大学 | Microwave photon image frequency suppresses frequency mixing method and device |
| CN110061781A (en) * | 2018-01-19 | 2019-07-26 | 伊格尔科技有限责任公司 | Use the method and apparatus of the radio frequency photon spectrometer of frequency comb |
| CN108964779A (en) * | 2018-07-23 | 2018-12-07 | 南京航空航天大学 | Channelized receiving method and device based on the vibration of frequency spectrum intertexture trimmed book |
| CN112134624A (en) * | 2019-06-24 | 2020-12-25 | 西安电子科技大学 | Efficient microwave photon channelized receiving method |
| CN111181683A (en) * | 2020-01-08 | 2020-05-19 | 中国船舶重工集团公司第七二四研究所 | Device and design method of ultra-wideband receiver based on microwave photons |
| US11051089B1 (en) * | 2020-03-27 | 2021-06-29 | The Boeing Company | Microwave photonics enabled beam-forming and channelization |
| CN111525963A (en) * | 2020-04-10 | 2020-08-11 | 东南大学 | Integrated structure of coherent channelized receiver |
| CN111541492A (en) * | 2020-04-24 | 2020-08-14 | 咸阳师范学院 | Multichannel expanded ultra-wideband radio-frequency channelized receiving device and implementation method |
| CN112165361A (en) * | 2020-09-29 | 2021-01-01 | 中国船舶重工集团公司第七二四研究所 | Optical channelization device and method with tunable frequency range |
Non-Patent Citations (4)
| Title |
|---|
| Microwave channelizer based on a photonic dual-output image-reject mixer;WENJUAN CHEN等;《Optics Letters》;正文2-3页，图2-3 * |
| Microwave Photonic Channelizer With Large Instantaneous Bandwidth Based on AOFS;Xiaoqing Xue等;《IEEE Photonics Journal》;正文1-3页，图1-2 * |
| Research on spectrum sensing technology of channelization filtering based on optical frequency comb;Jianjun Zhang等;《2016 IEEE 13th International Conference on Signal Processing (ICSP)》;全文 * |
| 基于单光频梳的卫星通信多频段变频方法;林涛;赵尚弘;朱子行;李轩;郑秋容;屈坤;胡大鹏;;光学学报(第06期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114401048A (en) | 2022-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107222263B (en) | A kind of microwave photon transceiver based on relevant frequency comb | |
| CN109842451B (en) | Method for realizing microwave signal photonics frequency conversion and multi-channel phase shift by using dual-polarization quadrature phase shift keying modulator | |
| WO2015176527A1 (en) | Orthogonal multicarrier light source and pdm-qpsk signal transmission device | |
| EP2506456B1 (en) | Signal reception device and method based on microwave photon technology | |
| CN108809437B (en) | Microwave photon down-conversion device and method | |
| US6556327B1 (en) | Signal converter, optical transmitter and optical fiber transmission system | |
| CN107340666B (en) | A kind of vector signal means of upconversion based on optical-electronic oscillator | |
| CN103297145A (en) | Device for generating sixteen-frequency multiplication millimeter waves in full light | |
| CN105721060B (en) | A kind of two-way multi service access ROF Transmission systems and method that carrier wave huge profit is realized using palarization multiplexing | |
| Termos et al. | All-optical radiofrequency sampling mixer based on a semiconductor optical amplifier Mach–Zehnder interferometer using a standard and a differential configuration | |
| CN111541492A (en) | Multichannel expanded ultra-wideband radio-frequency channelized receiving device and implementation method | |
| EP3378174A1 (en) | High-rf-frequency analog fiber-optic links using optical signal processing | |
| CN113872700A (en) | High-isolation multichannel microwave photon up-conversion device and method | |
| CN111756451B (en) | Four-channel indium phosphide optical I/Q zero intermediate frequency channelized receiving chip | |
| CN107070835B (en) | Two-way photon radio frequency OFDM system with self-locking and self-coherent detection phases and signal processing implementation method thereof | |
| CN111641461B (en) | Filtering-free image rejection down-conversion method based on cascade modulator | |
| CN114401048B (en) | Ultra-wideband microwave photon channelized receiving device and implementation method | |
| CN114024616B (en) | Multi-path variable frequency structure realized by polarization state independent modulation | |
| CN114448518B (en) | Method for coherently detecting optical carrier radio frequency link with low complexity | |
| CN215956390U (en) | Microwave photon single optical frequency comb injection locking channelized receiving device | |
| CN113612543B (en) | Channelized receiving device and method for injection locking of microwave photon single-optical-frequency comb | |
| CN106877940B (en) | Optical signal transmitting end and millimeter wave optical carrier wireless communication system | |
| CN206962847U (en) | A kind of bidirectional photonic radio frequency ofdm system of phase from locking from coherent detection | |
| Qiao et al. | Microwave photonic sub-harmonic downconverter with image rejection capability | |
| CN114024620B (en) | Double-optical-frequency comb channelized receiver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |