CN112217566A - Remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion - Google Patents
Remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion Download PDFInfo
- Publication number
- CN112217566A CN112217566A CN202011141620.9A CN202011141620A CN112217566A CN 112217566 A CN112217566 A CN 112217566A CN 202011141620 A CN202011141620 A CN 202011141620A CN 112217566 A CN112217566 A CN 112217566A
- Authority
- CN
- China
- Prior art keywords
- spectrum
- oscillation source
- frequency microwave
- microwave oscillation
- frequency
- 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.)
- Granted
Links
Images
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
- H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
- H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention provides a remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion; the same DFB laser light source is adopted to generate high-speed optical millimeter waves and a remote high-frequency microwave oscillation source, so that phase noise can be effectively suppressed; the adopted DFB laser has the characteristics of narrow line width and high side mode suppression ratio, and can effectively suppress intensity noise; the remote high-frequency microwave oscillation source provided by the invention has a novel, simple and feasible generation scheme and can effectively suppress noise. The method and the system can be used as important reference for exploring and researching a high-bit-rate optical millimeter wave system, and can provide important support for deep research in the fields of microwave photonics, nonlinear optics, optical fiber communication, optical information processing, new-generation information technology and the like.
Description
Technical Field
The invention relates to a remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion, which can be applied to the fields of microwave photonics, nonlinear optics, optical fiber communication, optical information processing, new-generation information technology and the like.
Background
In recent years, various services such as big data, broadband streaming media, 4G/5G traffic, etc. have been increasing, and the demand for high-speed and large-capacity wireless communication has been increasing. In order to realize wireless broadband communication, Radio-over-fiber (RoF) technology, which combines optical fiber communication technology and high-frequency wireless access, is used as a Radio-over-fiber (RoF) technology. Currently, the optical millimeter wave generation, transmission and reception technology has become one of the research hotspots for implementing ultra-wideband access [ Zengyan Wu, Changqing Cao, Xiaoodong Zeng, Zhejun Feng, Jingshi Shen, Xu Yan, Bo Wang, and Xiyuan Su, "Filter radial-over-fiber system based on polarization multiplexing to generating an 80 GHz micrometer wave," applied optical No. 59, 7455-, s, Chi, and G. Lin, "Inconent Dual Laser transmitters Enable 60-GHz Millimeter-Wave-Over-Fiber Link," in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optical Society of America, 2020), paper STu4L.2 ].
The generation, transmission and reception technology of optical millimeter waves is an important technology for realizing high-performance communication. However, the requirements of the optical millimeter wave system on device performance parameters, optical fiber parameters and the like are strict; an expensive electric high-frequency local oscillation source (such as 40GHz, 60 GHz and the like) has to be introduced into an optical millimeter wave uplink subsystem, and if effective measures can be taken to replace the electric high-frequency local oscillation source, the system is a great progress. The breadth of our country is large, the population is large, the information communication demand is rapidly increased, and the communication demand of high-speed optical millimeter waves is increasingly urgent. In general, two different stimuli may be used
The optical device generates light waves with different wavelengths to beat frequency to generate an electric high-frequency local oscillation source, however, the situation has larger phase noise; therefore, the key point of the research of the optical millimeter wave is to innovatively solve the substitution problem of the electrical high-frequency local vibration source and realize the high speed.
Disclosure of Invention
Technical problem to be solved
Under the support of national science foundation (numbers 61671227 and 61431009), Shandong province science foundation (ZR 2011FM 015) and Taishan scholars' construction project special expenses and under the condition that the requirement of optical millimeter wave high speed is increasingly urgent, the invention provides a remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum extension to replace an electric high-frequency local oscillation source in a high-speed optical millimeter wave uplink system aiming at the problems in the optical millimeter wave research, and provides important support for deep research in the fields of microwave photonics, nonlinear optics, optical fiber communication, optical information processing, new-generation information technology and the like by taking 43.2 GHz and 10.8 Gbit/s high-speed optical millimeter wave systems as examples.
(II) technical scheme
Taking a 43.2 GHz and 10.8 Gbit/s high-speed optical millimeter wave system as an example, the invention provides a remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion, and laser generated by a narrow-linewidth DFB laser is processed by 60: after the 40 branching unit branches, 60% of laser enters a high-speed optical millimeter wave generation and transmission system; 40% of laser enters a novel remote high-frequency microwave oscillation source system through a polarization controller; the remote high-frequency microwave oscillation source system and the optical millimeter wave system share the same narrow linewidth DFB laser; the Agilent 43.2 Gbit/s error code instrument 81250 outputs a 10.8 Gbit/s high-speed data signal to generate a high-speed optical millimeter wave, and simultaneously generates a 10.8 GHz electric clock required by a remote high-frequency microwave oscillation source; the 10.8 GHz electric clock enters a high-speed broadband modulator to modulate the laser output by the polarization controller after being amplified by the SHF806E first electric amplifier, and a modulation spectrum with 10.8 GHz intervals is formed; after spectrum expansion of the modulation spectrum with the interval of 10.8 GHz is performed by the nonlinear spectrum expansion module, the modulation spectrum enters the light filtering module to filter redundant spectrum, and a high-frequency microwave oscillation source spectrum with the interval of 43.2 GHz is formed; the frequency interval of the spectrum of the high-frequency microwave oscillation source can be adjusted and selected according to actual conditions; the spectrum expansion module consists of an erbium-doped fiber amplifier KPS-EDFA and short-distance dispersion flat fiber; the spectrum of the high-frequency microwave oscillation source generally has a wider spectrum, and can be transmitted by a dispersion flat optical fiber with low dispersion of 76.2km to obtain the spectrum of the remote high-frequency microwave oscillation source; the spectrum of the remote high-frequency microwave oscillation source is properly amplified by an EDFA and enters a high-frequency photoelectric detector to obtain a beat frequency electric signal; the beat frequency electric signal is amplified by a second electric amplifier SHF803P to obtain an electric remote high-frequency microwave oscillation source required by the system; the performance of the electric remote high-frequency microwave oscillation source can be measured and analyzed by the electric spectrum instrument E4440A through the mixer 11970U; the spectral performance of the optical path link of the system can be measured by using a spectral analyzer AQ 6319.
The invention has the following beneficial effects:
taking a 43.2 GHz and 10.8 Gbit/s high-speed optical millimeter wave system as an example, the invention provides a remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion; the same DFB laser light source is adopted to generate high-speed optical millimeter waves and a remote high-frequency microwave oscillation source, so that phase noise can be effectively suppressed; the adopted DFB laser has the characteristics of narrow line width and high side mode suppression ratio, and can effectively suppress intensity noise; the remote high-frequency microwave oscillation source provided by the invention has a novel, simple and feasible generation scheme and can effectively suppress noise. The method and the system can be used as important reference for exploring and researching a high-bit-rate optical millimeter wave system, and can provide important support for deep research in the fields of microwave photonics, nonlinear optics, optical fiber communication, optical information processing, new-generation information technology and the like.
Drawings
FIG. 1 is a block diagram of a remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion;
fig. 2 is a spread spectrum output by the spectrum spreading module (8).
Detailed Description
The invention is further described with reference to the following figures and implementations.
FIG. 1 is a block diagram of a remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion. As shown in fig. 1, the present invention provides a remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion, and laser generated by a narrow-linewidth DFB laser 1 is processed by 60: after the branching of the 40 branching unit 2, 60% of laser enters the high-speed optical millimeter wave generating and transmitting system 3; 40% of laser enters a novel remote high-frequency microwave oscillation source system through a polarization controller 4; the remote high-frequency microwave oscillation source system and the optical millimeter wave system share the same narrow linewidth DFB laser 1; the Agilent 43.2 Gbit/s error code instrument 81250 outputs 10.8 Gbit/s high-speed data signals to generate high-speed optical millimeter waves and simultaneously generates a 10.8 GHz electric clock 5 required by a remote high-frequency microwave oscillation source; the 10.8 GHz electric clock 5 enters a high-speed broadband modulator 7 to modulate the laser output by the polarization controller 4 after being amplified by the SHF806E first electric amplifier 6, and a modulation spectrum with 10.8 GHz intervals is formed; after spectrum expansion of the modulation spectrum with the interval of 10.8 GHz is performed by the nonlinear spectrum expansion module 8, the modulation spectrum enters the light filtering module 9 to filter redundant spectrum, and a high-frequency microwave oscillation source spectrum with the interval of 43.2 GHz is formed; the frequency interval of the spectrum of the high-frequency microwave oscillation source can be adjusted and selected according to actual conditions; the spectrum expansion module 8 consists of an erbium-doped fiber amplifier KPS-EDFA and short-distance dispersion flat fiber; the spectrum of the high-frequency microwave oscillation source generally has a wider spectrum and can be transmitted by a dispersion flat optical fiber 10 with low dispersion of 76.2km to obtain the spectrum of the remote high-frequency microwave oscillation source; the spectrum of the remote high-frequency microwave oscillation source is properly amplified by EDFA11 and enters the high-frequency photoelectric detector 12 to obtain a beat frequency electric signal; the beat frequency electric signal is amplified by an SHF803P second electric amplifier 13 to obtain an electric remote high-frequency microwave oscillation source required by the system; the performance of the electric remote high-frequency microwave oscillation source can be measured and analyzed by the electric spectrum instrument E4440A through the mixer 11970U; the spectral performance of the optical path link of the system can be measured by using a spectral analyzer AQ 6319.
Fig. 2 is a spread spectrum output by the spectrum spreading module 8. As can be seen, the spectrum is 16 spectral lines spaced at 10.8 GHz; the center wavelength of the spectrum is 1549.874 nm and can be adjusted by a DFB laser; the extinction ratio of the center of the spectrum is maximum and exceeds 35 dB; the extinction ratios of the spectrum center, the 7 spectral lines on the left side of the spectrum center and the 8 spectral lines on the right side of the spectrum center can be larger than 20dB, and any two spectral lines can be used as spectral lines for beating frequency of a remote high-frequency microwave oscillation source. The spectral lines are from the same DFB laser with high extinction ratio and narrow line width and from the same high-speed broadband modulator, and phase noise and intensity noise can be effectively suppressed. The larger the extinction ratio of the spectral line is, the better the performance of the remote high-frequency microwave oscillation source generated by beat frequency is. The application of the method takes the optical filtering module to reserve the 4 th spectral line on the right side of the spectral center and the spectral center as an example, the spectral center and the 4 th spectral line on the right side of the spectral center are reserved, and a remote high-frequency microwave oscillation source spectrum with the interval of 43.2 GHz is formed; the clock frequency output by the Agilent 43.2 Gbit/s error code instrument 81250 can be adjusted to form remote high-frequency microwave oscillation source spectrums with different frequency intervals; if the clock frequency is adjusted to be 10 GHz, a remote high-frequency microwave oscillation source spectrum with the interval of 40GHz can be obtained; according to actual conditions, two proper spectral lines can be adjusted and selected as spectral lines for beat frequency of the remote high-frequency microwave oscillation source to form the required remote high-frequency microwave oscillation source with different frequencies so as to replace an electric high-frequency local oscillation source in the high-speed optical millimeter wave uplink system.
In a word, taking a 43.2 GHz and 10.8 Gbit/s high-speed optical millimeter wave system as an example, the invention provides a remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion; the frequency of the remote high-frequency microwave oscillation source system can be adjusted and selected according to actual conditions; the remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion provides important support for deep research in the fields of microwave photonics, optical fiber communication, wireless optical fiber access, optical fiber optics, optical information processing, new-generation information technology and the like.
It should be noted that the specific embodiments are merely representative examples of the present invention, and it is obvious that the technical solution of the present invention is not limited to the above examples, and many variations are possible. Those skilled in the art, having the benefit of this disclosure and the benefit of this written description, will appreciate that other embodiments can be devised which do not depart from the specific details disclosed herein.
Claims (2)
1. A remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion is characterized in that: laser light generated by a narrow linewidth DFB laser (1) is 60: after the 40 branching unit (2) branches, 60% of laser enters a high-speed optical millimeter wave generating and transmitting system (3); 40% of laser enters a novel remote high-frequency microwave oscillation source system through a polarization controller (4); the remote high-frequency microwave oscillation source system and the optical millimeter wave system share the same narrow linewidth DFB laser (1); the Agilent 43.2 Gbit/s error code instrument 81250 outputs 10.8 Gbit/s high-speed data signals to generate high-speed optical millimeter waves, and simultaneously generates a 10.8 GHz electric clock (5) required by a remote high-frequency microwave oscillation source; the 10.8 GHz electric clock enters a high-speed broadband modulator (7) to modulate the laser output by the polarization controller (4) after being amplified by the first electric amplifier (6), and a modulation spectrum with 10.8 GHz intervals is formed; after spectrum expansion of the modulation spectrum with the interval of 10.8 GHz is performed by the spectrum expansion module (8), the modulation spectrum enters the light filtering module (9) to filter redundant spectrum, and a high-frequency microwave oscillation source spectrum with the interval of 43.2 GHz is formed; the frequency interval of the spectrum of the high-frequency microwave oscillation source can be adjusted and selected according to actual conditions; the spectrum of the high-frequency microwave oscillation source generally has a wider spectrum, and is transmitted by a dispersion flat optical fiber (10) with low dispersion of 76.2km to obtain the spectrum of the remote high-frequency microwave oscillation source; the spectrum of the remote high-frequency microwave oscillation source is properly amplified by an EDFA (11) and enters a high-frequency photoelectric detector (12) to obtain a beat frequency electric signal; the beat frequency electric signal is amplified by a second electric amplifier (13) to obtain an electric remote high-frequency microwave oscillation source required by the system; the performance of the electric remote high-frequency microwave oscillation source can be measured and analyzed by the electric spectrum instrument E4440A through the mixer 11970U; the spectral performance of the optical path link of the system can be measured by using a spectral analyzer AQ 6319.
2. The remote high-frequency microwave oscillating source system based on single-stage nonlinear spectrum expansion as claimed in claim 1, characterized in that: the spectrum expansion module (8) is composed of an erbium-doped fiber amplifier KPS-EDFA and short-distance dispersion flat fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011141620.9A CN112217566B (en) | 2020-10-22 | 2020-10-22 | Remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011141620.9A CN112217566B (en) | 2020-10-22 | 2020-10-22 | Remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112217566A true CN112217566A (en) | 2021-01-12 |
| CN112217566B CN112217566B (en) | 2023-09-08 |
Family
ID=74054920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011141620.9A Active CN112217566B (en) | 2020-10-22 | 2020-10-22 | Remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112217566B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684610A (en) * | 2013-09-22 | 2014-03-26 | 聊城大学 | Remote high-frequency microwave oscillating source in optical millimeter wave system |
| CN103840885A (en) * | 2014-02-27 | 2014-06-04 | 聊城大学 | High carrier frequency and high speed light millimeter wave generating and long-span transmission system |
| CN105391512A (en) * | 2015-10-30 | 2016-03-09 | 聊城大学 | Multicarrier generation system based on dispersion-flattened fiber single-stage modulation |
-
2020
- 2020-10-22 CN CN202011141620.9A patent/CN112217566B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684610A (en) * | 2013-09-22 | 2014-03-26 | 聊城大学 | Remote high-frequency microwave oscillating source in optical millimeter wave system |
| CN103840885A (en) * | 2014-02-27 | 2014-06-04 | 聊城大学 | High carrier frequency and high speed light millimeter wave generating and long-span transmission system |
| CN105391512A (en) * | 2015-10-30 | 2016-03-09 | 聊城大学 | Multicarrier generation system based on dispersion-flattened fiber single-stage modulation |
Non-Patent Citations (1)
| Title |
|---|
| 薛壮壮;裴丽;解宇恒;郝丹;朱可;: "无滤波24倍频光载毫米波发生器", 光学学报, no. 10 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112217566B (en) | 2023-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112532325B (en) | Multi-dimensional multiplexing photon terahertz communication system | |
| KR19980081362A (en) | Optical Transmitter / Receiver | |
| CN111464240B (en) | Vector radio frequency signal generation system based on polarization multiplexing intensity modulator | |
| TW201345178A (en) | Communications device with discriminator and wavelength division multiplexing for generating intermediate frequency signal and related methods | |
| Khan et al. | 4 m/100 Gb/s optical wireless communication based on far L–band injection locked quantum-dash laser | |
| Zhang et al. | Generation of multiple-frequency optical millimeter-wave signal with optical carrier suppression and no optical filter | |
| CN103840885A (en) | High carrier frequency and high speed light millimeter wave generating and long-span transmission system | |
| CN212992328U (en) | Remote high-frequency microwave oscillation source system based on dispersion flat optical fiber | |
| CN112217566A (en) | Remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion | |
| CN213072669U (en) | Remote high-frequency microwave oscillation source system based on dispersion gradually-decreasing optical fiber | |
| CN111901040B (en) | System for generating multiple wireless and wired signals based on a single modulator | |
| CN112272059B (en) | Remote high-frequency microwave oscillation source system based on two-stage nonlinear spread spectrum | |
| CN112769496B (en) | Device and method for optimizing SSB (secure subscriber line) modulation optical carrier wireless communication link | |
| KAZANCILI et al. | Amplifier Analysis of Radio over Fiber Communication Systems | |
| Guan et al. | Enabling 5G services in PON with a novel smart edge based on SiP MRM | |
| Chorchos et al. | W-band real-time transmission utilizing a reconfigurable RAU for NG-PON networks | |
| Taniguchi et al. | An optical/electrical two-step heterodyne technique for wideband 60GHz radio-on-fiber access | |
| CN103825659B (en) | A kind of high rate optical millimeter wave is produced and non-relay long span Transmission system | |
| KR102290138B1 (en) | Discrete External Modulated Optical Transmitter | |
| Mochii et al. | A bidirectional wireless-over-fiber transport system | |
| Hsueh et al. | Multiband signals generation and transmission over fiber and air by a novel frequency-doubled, radio-over-fiber architecture without expensive carrier suppression filters | |
| Liu et al. | Massively Parallel Free Space Optical Communications Based on Soliton Microcomb | |
| Wu et al. | Efficient centralized light sources for RoF-WDM-PON based on weak-resonant-cavity fabry-perot laser diode | |
| CN106712852B (en) | Current injection gain self-adjustment multicast photon radio frequency transmitter | |
| WO2007091013A1 (en) | Optical communication |
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 |