WO2021175969A1 - Système à distribution de porteuses optiques - Google Patents

Système à distribution de porteuses optiques Download PDF

Info

Publication number
WO2021175969A1
WO2021175969A1 PCT/EP2021/055418 EP2021055418W WO2021175969A1 WO 2021175969 A1 WO2021175969 A1 WO 2021175969A1 EP 2021055418 W EP2021055418 W EP 2021055418W WO 2021175969 A1 WO2021175969 A1 WO 2021175969A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser source
base station
optical
light
generator
Prior art date
Application number
PCT/EP2021/055418
Other languages
German (de)
English (en)
Inventor
Stephan Kruse
Johannes Christoph SCHEYTT
Original Assignee
Universität Paderborn
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Universität Paderborn filed Critical Universität Paderborn
Priority to CN202180028970.0A priority Critical patent/CN115349230A/zh
Publication of WO2021175969A1 publication Critical patent/WO2021175969A1/fr

Links

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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
    • H04B10/25752—Optical arrangements for wireless networks
    • H04B10/25753—Distribution optical network, e.g. between a base station and a plurality of remote units
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/003—Transmission of data between radar, sonar or lidar systems and remote stations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G01S7/032—Constructional details for solid-state radar subsystems

Definitions

  • the invention relates to a system with optical carrier distribution.
  • signals are received from a front end and transmitted to a base station via a connection.
  • the disadvantage of such systems is that one laser is required for each HF receiver in order to generate the IQ signal.
  • the IQ generation was also implemented using a DSP and phase shifter. Since the DSP works with digital signals, whereas the phase shifters require analog signals, a digital to analog converter (DAC) and an analog to digital converter (ADC) are required. Thus, N + 1 laser diodes are required for the entire system, where N is the number of RF receivers.
  • coaxial cables are heavy and contain comparatively expensive materials.
  • coaxial cables also have high attenuation and are also susceptible to electromagnetic interference.
  • the manufacture and wiring of coaxial cables is also expensive.
  • the rapid degradation caused by environmental influences is a major problem for signal transmission.
  • a system with optical carriers is known from the document mentioned at the beginning, "Demonstration of a microwave photonic synthetic aperture radar based on photonic-assisted signal generation and stretch processing," that the data for the path from the RF receiver to the base station is transmitted via an optical return channel sends.
  • a second laser was used to implement the optical carrier for the return channel.
  • the laser signal was divided into two paths, the two paths being polarized by 90 ° to one another.
  • a coherent detection based on the polarization of the laser light then took place in the base station.
  • N + 1 laser diodes are required for the entire system, where N is the number of RF receivers.
  • a system with optical carriers is known from the publication "Photonics-based broadband radar for high-resolution and realtime inverse synthetic aperture imaging” mentioned at the beginning, which uses an optical return channel for the path from the RF receiver to the base station.
  • the invention has set itself the task of avoiding one or more problems from the prior art, in particular of offering a cost-effective solution.
  • Fig. 1 is a block diagram of a (wireless) system according to the invention with optical carrier distribution (for phase-controlled group antennas) with IQ return channel without local oscillator according to embodiments of the invention
  • Fig. 2 is a block diagram of a (wireless) system according to the invention with optical carrier distribution with IQ return channel without local oscillator according to a wide Ren embodiments of the invention
  • FIG. 3 shows a first embodiment of an optical IQ generator with optical directional couplers and phase shifters for fine tuning according to embodiments of the invention.
  • FIG. 4 shows a second embodiment of an optical IQ generator with 1x2 MMI and phase shifters according to embodiments of the invention.
  • FIG. 1 shows a (wireless) system 1 with optical carrier distribution (for phase-controlled group antennas) with a return channel without a local oscillator.
  • the (wireless) system has a base station with a laser source LD.
  • Light from the laser source LD can be distributed to one or more remote front-end devices FEi ... FEN.
  • the laser source LD can be a suitable laser, for example a semiconductor laser diode, which provides, for example, light of approximately 1310 nm or 1550 nm.
  • the front-end devices FEi ... FE N each have, for example, at least one output device ANTtc which, controlled by the received laser light from the laser source LD, outputs a transmission signal.
  • the transmission signal can also be amplified by means of a power amplifier PA.
  • the delivery device ANTTX can be, for example, a transmitting antenna.
  • the transmission signal can also be modulated, e.g. using IQ data.
  • the transmission signal can also include an up-mixing of the received signal.
  • the light ELD of the laser source LD can be modulated E M z in the base station BS before it is distributed to one or more remote front-end devices (FEI... N).
  • the front-end devices FEi ... FE N each have at least one recording device ANTRX, which records a received signal.
  • the receiving device ANTRX can be, for example, a receiving device.
  • a single antenna is used as a transmitting antenna and as a receiving device in an alternating manner. In other words, at a first point in time / time period the antenna is used as a transmitting antenna ANT TM and at a second point in time / time period the antenna is used as a receiving device ANTRX.
  • an embodiment would also be possible in which, for example, as in the case of a circulator, a single antenna can act simultaneously as a transmitting antenna and as a receiving device.
  • part of the received laser light from the laser source LD is made available to an optical IQ generator OIQ for generating phase-shifted signals.
  • the received signal can now be mixed in the front-end device FEi ... FE N with the signals from the IQ generator OIQ and fed back to an evaluation device in the base station BS.
  • Received signals can be amplified using a low-noise amplifier LNA.
  • the front-end device FEi ... FE N can be both a concentrated device, as shown. Alternatively, however, it is also possible to distribute the front-end device FEi ... FE N so that, for example, one sub-device has components of the transmission branch and another sub-device has components of the reception branch.
  • the architecture presented in Fig. 1 or 2 sends IQ data from a (eg wireless) front-end device FEi ... FE N optically back to the base station BS without having to own a LO laser itself.
  • the laser signal of the optical carrier distribution is used again for this purpose.
  • the optical carrier is divided between the various front-end devices FEi ... FEN at (5) in the base station BS.
  • Each front-end device FEi ... FEN is divided in (3) the optical signal on the transmitter part with the photodiode and the return channel.
  • the reused carrier signal can be converted into an IQ signal in the optical IQ generator OIQ.
  • the signals Ei and EQ are multiplied with their corresponding electrical signals Vi and V Q, for example in Mach Zehnder interferometers (abbreviated to MZI) and added in (4) in order to then return the signals to the base station, for example via a glass fiber.
  • MZI Mach Zehnder interferometers
  • the system can also be implemented in silicon photonic circuits, since the system can work with purely TE-polarized light in addition to mixed polarized light.
  • no fast analog-digital converters or digital-analog converters are required, since the optical signal to be detected is only in the bandwidth of the electrical LO signal.
  • This embodiment is suitable, for example, for radar systems.
  • a (wireless) system 1 with optical carrier distribution with a return channel without a local oscillator according to FIG. 2 is again provided.
  • the system in turn has a base station BS with a laser source LD, with light from the laser source LD being distributed to one or more remote front-end devices FEi ... FE N , the front-end device FEi ... FE N also having a receiving device ANT RX , which picks up a received signal, part of the received laser light from the laser source LD being made available to an optical IQ generator OIQ for generating phase-shifted signals, the received signal being mixed with the signals from the IQ generator OIQ and sent to an evaluation device in the base station BS is returned.
  • ANT RX which picks up a received signal, part of the received laser light from the laser source LD being made available to an optical IQ generator OIQ for generating phase-shifted signals, the received signal being mixed with the signals from the IQ generator OIQ and sent to an evaluation device in the base station BS is returned.
  • the front-end device FEi ... FEN can be both a concentrated device, as shown. Alternatively, however, it is also possible to distribute the front-end device FEi ... FEN, so that, for example, one sub-device has components of the transmission branch and another sub-device has components of the reception branch.
  • the light from the laser source LD is distributed to the remote front-end devices FEi... FE N via a glass fiber or a free space connection. It is also possible, as an alternative or in addition, to route the signal in the reverse direction to the base station BS from the front-end devices FEi ... FEN via a glass fiber or a free space connection.
  • part of the laser light from the laser source LD is branched off in the base station BS and made available to the evaluation device AE.
  • the base station BS furthermore has a phase shifter which makes the branched off part of the laser light from the laser source LD available to the evaluation device AE with a phase shift.
  • a part of the optical carrier can be derived and made available as a source signal for the signal Es.
  • the splitting off can take place before, after or during the splitting for the different receiving paths, e.g. in (5).
  • optical IQ generator can be designed in a suitable analog or digital manner. Two analogous variants are presented below, but without being restricted to these.
  • the optical IQ generator OIQ has optical directional couplers RK and phase shifter PS.
  • optical directional couplers RK and phase shifter PS Such an implementation is shown as a principle sketch in FIG. Again, all components of the optical IQ generator OIQ can be integrated on one chip. Since the optical directional coupler already generates a phase difference of 90 °, with this type of optical IQ generation OIQ the phase shifters only have to compensate for environmental influences and therefore the expected control voltage is small.
  • the optical IQ generator OIQ has a multi-mode interferometer (MMI) and phase shifter.
  • MMI multi-mode interferometer
  • phase shifter Such an implementation is shown as a principle sketch in FIG. Again, all components of the optical IQ generator OIQ can be integrated on one chip. Since a 1x2 MMI does not generate a phase difference between the two outputs, the phase shifters must generate the phase difference of 90 ° with this type of optical IQ generation.
  • the embodiments of the removed front terminals FEi ... FE N is changed a part of the received laser light from the laser source LD before the recycling to the evaluation in the base station by mixing and / or modulating in at least one order, for example an IQ modulation with or without realizing data.
  • the phase position can be set, preferably in the base station BS, for example by means of a phase shifter PS.
  • a phase shifter PS it would also (alternatively or additionally) be possible to influence the phase position in a front-end device FEi ... FEN with an effect on the returned signals.
  • the necessary phase setting information would have to reach the associated front-end device FEi... FE N via a further signal from the base station BS for coherent reception.
  • light from the laser source LD which is intended for distribution to one or more remote front-end devices (FE1... N) is amplified by an amplifier device, for example a fiber amplifier.
  • the invention makes it possible, by means of a single laser LD, to synchronize any number of front-end devices FEi ... FE N ZU, and at the same time to implement an optical IQ path from the receiver to the base station BS. Furthermore, a coherent detection can take place in the base station BS, as a result of which the IQ signals can be regenerated again from the single laser signal. Without restricting the generality, the invention is also not restricted to wireless systems.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

L'invention concerne un système de distribution de porteuses optiques avec un canal de retour sans oscillateur local, comportant une station de base avec une source laser (LD), la lumière de la source laser (LD) étant répartie sur un ou plusieurs dispositifs frontaux distants, le dispositif frontal comportant en outre un dispositif de sortie qui émet un signal de transmission sous la commande de la lumière laser reçue de la source laser (LD), et un dispositif d'enregistrement qui enregistre un signal de transmission rétrodiffusé, dans lequel une partie de la lumière laser reçue de la source laser (LD) est mise à la disposition d'un générateur optique IQ pour générer des signaux déphasés, dans lequel le signal de transmission rétrodiffusé reçu est mélangé avec les signaux du générateur IQ et renvoyé à un dispositif d'évaluation dans la station de base. L'invention concerne en outre un système de distribution de porteuses optiques avec un canal de retour sans oscillateur local, comportant une station de base avec une source laser (LD), la lumière de la source laser (LD) étant répartie sur un ou plusieurs dispositifs frontaux distants, le dispositif frontal comportant en outre un dispositif d'enregistrement qui enregistre un signal de réception, dans lequel une partie de la lumière laser reçue de la source laser (LD) est mise à disposition sur un générateur IQ optique pour générer des signaux déphasés, dans lequel le signal de réception est mélangé avec les signaux du générateur IQ et renvoyé à un dispositif d'évaluation dans la station de base.
PCT/EP2021/055418 2020-03-04 2021-03-04 Système à distribution de porteuses optiques WO2021175969A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202180028970.0A CN115349230A (zh) 2020-03-04 2021-03-04 一种光载波分配系统

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020202771.4 2020-03-04
DE102020202771.4A DE102020202771A1 (de) 2020-03-04 2020-03-04 System mit optischer Trägerverteilung

Publications (1)

Publication Number Publication Date
WO2021175969A1 true WO2021175969A1 (fr) 2021-09-10

Family

ID=74859443

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/055418 WO2021175969A1 (fr) 2020-03-04 2021-03-04 Système à distribution de porteuses optiques

Country Status (3)

Country Link
CN (1) CN115349230A (fr)
DE (1) DE102020202771A1 (fr)
WO (1) WO2021175969A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022201312B4 (de) 2022-02-08 2023-10-12 Volkswagen Aktiengesellschaft Verfahren zum Betreiben einer elektrooptischen Übertragungsvorrichtung für beliebige Signale, Computerprogrammprodukt sowie Datenübertragungsvorrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9823540B2 (en) 2013-03-20 2017-11-21 Xieon Networks S.A.R.L. Optical IQ modulator control
EP3489712A1 (fr) * 2017-11-28 2019-05-29 Volkswagen AG Système radar et procédé de fonctionnement d'un système radar

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9735886B2 (en) 2014-09-02 2017-08-15 Technion Research And Development Foundation Ltd. Self-coherent robust spectrally efficient optical transmission systems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9823540B2 (en) 2013-03-20 2017-11-21 Xieon Networks S.A.R.L. Optical IQ modulator control
EP3489712A1 (fr) * 2017-11-28 2019-05-29 Volkswagen AG Système radar et procédé de fonctionnement d'un système radar

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
GHELFI ET AL.: "A Fully Photonics-Based Coherent Radar System", NATURE, vol. 507, March 2014 (2014-03-01), pages 341
LI ET AL.: "Demonstration of a microwave photonic synthetic aperture radar based on photonic-assisted signal generation and stretch processing", OPT. EXPRESS, vol. 25, 2017, pages 14334 - 14340
PREUSLER ET AL.: "Optical Signal Generation and Distribution for Large Aperture Radar in Autonomous Driving", 12TH GERMAN MICROWAVE CONFERENCE (GEMIC), 2019, pages 154 - 157, XP033541330, DOI: 10.23919/GEMIC.2019.8698119
PREUSSLER STEFAN ET AL: "Optical Signal Generation and Distribution for Large Aperture Radar in Autonomous Driving", 2019 12TH GERMAN MICROWAVE CONFERENCE (GEMIC), IMA - INSTITUT FUR MIKROWELLEN- UND ANTENNENTECHNIK E.V, 25 March 2019 (2019-03-25), pages 154 - 157, XP033541330, DOI: 10.23919/GEMIC.2019.8698119 *
ZHANG ET AL.: "Photonics-based broadband radar for high-resolution and real-time inverse synthetic aperture imaging", OPT. EXPRESS, vol. 25, 2017, pages 16274 - 16281

Also Published As

Publication number Publication date
DE102020202771A1 (de) 2021-09-09
CN115349230A (zh) 2022-11-15

Similar Documents

Publication Publication Date Title
EP0461380B1 (fr) Système de transmission de données radio, notamment système de radio mobile cellulaire
Guo et al. Dual-band LFM signal generation by optical frequency quadrupling and polarization multiplexing
EP0354567B1 (fr) Ensemble émission-réception pour un système de communication bidirectionnel cohérent et optique
DE60038651T2 (de) Vorwärtsgeregelter optischer Frequenz/Phasendemodulator
EP3489712A1 (fr) Système radar et procédé de fonctionnement d'un système radar
WO2021175969A1 (fr) Système à distribution de porteuses optiques
DE19710033C1 (de) Verfahren zur Umsetzung der Signalmodulation der Kanäle eines optischen Multiplex-Systems auf Subcarrierfrequenzen
Chen et al. Multi-band RF transceiver based on the polarization multiplexed photonic LOs and mixers
Xie et al. Microwave photonic channelizer based on polarization multiplexing and photonic dual output image reject mixer
DE69902759T2 (de) Optische verbindungen
DE69832560T2 (de) FM-Modulator
EP0288418B1 (fr) Procédé pour la transmission optique d'informations à réception hétérodyne
DE102014213442B4 (de) Sender für ein Freistrahl-Kommunikations-System, Freistrahl-Kommunikations-System mit einem solchen Sender nebst zugehörigem Empfängerterminal und zugehörigem Verfahren zur optischen Übertragung von Daten
DE102022201312B4 (de) Verfahren zum Betreiben einer elektrooptischen Übertragungsvorrichtung für beliebige Signale, Computerprogrammprodukt sowie Datenübertragungsvorrichtung
EP0717514A2 (fr) Dispositif émetteur optique pour système de télécommunication optique associé à un système radio
DE102010004285A1 (de) Netzelement
EP0612451B1 (fr) Dispositif pour produire des signaux de retroaction pour la regulation de circuits de surveillance optiques (pll)
DE3243517A1 (de) Elektrooptische empfangsantenne
EP0658015A1 (fr) Dispositif d'émission d'un faisceau de lumière modulé en amplitude et en phase
CN113419229B (zh) 一种相位可调的微波光子变频系统及其实现方法
DE4314406C2 (de) Gruppenantenne mit optischem Strahlformungs-Netzwerk
WO2021245215A1 (fr) Circuit de régulation électrooptique
DE4136801A1 (de) Gruppenantenne
DE102022212165A1 (de) Funk-Optisches Sensorsystem für die Umfelderfassung
DE19801223C2 (de) Verfahren zum Übertragen eines Mikrowellen- oder Millimeterwellensignals längs einer optischen Übertragungsstrecke

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21710245

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21710245

Country of ref document: EP

Kind code of ref document: A1