CN116366224A - Ultra-wideband chaotic light source and ultra-wideband chaotic generating device based on light injection - Google Patents

Ultra-wideband chaotic light source and ultra-wideband chaotic generating device based on light injection Download PDF

Info

Publication number
CN116366224A
CN116366224A CN202310057971.9A CN202310057971A CN116366224A CN 116366224 A CN116366224 A CN 116366224A CN 202310057971 A CN202310057971 A CN 202310057971A CN 116366224 A CN116366224 A CN 116366224A
Authority
CN
China
Prior art keywords
coupler
laser
discrete mode
chaotic
ultra
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.)
Pending
Application number
CN202310057971.9A
Other languages
Chinese (zh)
Inventor
王龙生
王云鹤
李一鸣
卫国瑞
牛晨丰
张建国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiyuan University of Technology
Original Assignee
Taiyuan University of Technology
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 Taiyuan University of Technology filed Critical Taiyuan University of Technology
Priority to CN202310057971.9A priority Critical patent/CN116366224A/en
Publication of CN116366224A publication Critical patent/CN116366224A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/001—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using chaotic signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H04B10/5057—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output
    • H04B10/50577—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output to control the phase of the modulating signal
    • 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
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/85—Protection from unauthorised access, e.g. eavesdrop protection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Computer Security & Cryptography (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)

Abstract

The invention belongs to the technical field of chaotic communication, and particularly relates to a broadband chaotic light source and an ultra wideband chaotic generating device based on light injection. The broadband chaotic light source comprises a discrete mode slave laser and a discrete mode master laser, wherein laser output by the discrete mode slave laser is divided into two beams after passing through a first coupler, one beam returns to the discrete mode slave laser through an annular optical fiber, the other beam is incident into a second coupler after passing through an optical circulator and is divided into two beams by the second coupler, one beam is used as an output end to directly output chaotic light, the other beam sequentially passes through an attenuator, returns to the optical circulator after passing through a third coupler and is then fed back to the discrete mode slave laser through the first coupler; the injection laser output by the discrete mode main laser enters the third coupler after passing through the optical isolator, and then enters the discrete mode slave laser after passing through the optical circulator and the first coupler. The invention expands the bandwidth of the chaotic signal and can obtain the ultra wideband chaotic signal.

Description

Ultra-wideband chaotic light source and ultra-wideband chaotic generating device based on light injection
Technical Field
The invention belongs to the technical field of chaotic communication, and particularly relates to an ultra wideband chaotic light source based on light injection and an ultra wideband chaotic generating device.
Background
Because the chaotic signal has the characteristics of wide frequency spectrum and noise, the chaotic signal is widely applied to the fields of secret communication, random number generation, optical fiber sensing, artificial intelligence and the like. Currently, the manner of generating chaotic laser light by using a semiconductor laser includes optical feedback, optical injection and photoelectric feedback. The external cavity feedback semiconductor laser is the preferred light source for the above applications due to its simple structure and complex dynamic characteristics. However, chaotic signals generated using external cavity feedback semiconductor lasers have two inherent drawbacks: first, the laser relaxation oscillations occupy the main energy of the chaotic laser, resulting in an uneven chaotic spectrum. This will limit the low frequency component energy and also limit the effective bandwidth of the chaos, which will be detrimental to later acquisition and processing for subsequent circuits in practical use. Second, the external cavity resonance results in the chaotic signal autocorrelation function having a distinct correlation peak at the external cavity period-a time delay characteristic that results in periodic correlation between the chaotic signals. This feature reduces the security of chaotic optical private communications, increases the risk of the system being deciphered, and reduces the randomness and reliability of its generation of random codes. Therefore, it is important to explore a chaotic generation scheme that can achieve bandwidth enhancement and can suppress latency characteristics.
In recent years, researchers have proposed many schemes for improving the bandwidth of the chaotic laser or hiding the delay characteristics of the chaotic laser, such as: pan to the university of southwest et al published a patent (application number: 201110236847.6; grant bulletin number: CN 102347590B) to "a laser chaotic signal generating device capable of hiding the feedback delay characteristic", which hides the delay characteristic of chaotic laser by adding an adjustable polarizer in the feedback cavity, but does not expand its bandwidth. The chaotic signal generated by the external cavity feedback semiconductor laser passes through the fiber Bragg grating, so that the low-frequency component can be effectively improved, and the chaotic signal with the spectral bandwidth of about 8GHz and flatness of +/-1.4 dB can be generated, but the characteristics of improving the low-frequency energy and eliminating the time delay can not be simultaneously realized (IET Optoelectronics,2018,13 (3): 104 108). The technical university Jiang Ning task group proposes to use electro-optic phase modulation and delay interference feedback loop and self-phase modulation and single-mode fiber with chromatic dispersion to obtain chaotic signals with flat spectrum, wide bandwidth and eliminated delay characteristics, but the whole device has complex structure, high cost and large operation difficulty (Optics express,2019,27 (9): 1233612348,Journal of Lightwave Technology,2019,37 (19): 5132 5139).
Disclosure of Invention
The invention overcomes the defects existing in the prior art, and solves the technical problems that: the ultra-wideband chaotic light source and the ultra-wideband chaotic generating device based on light injection are provided to generate ultra-wideband chaotic signals with large bandwidth and no time delay characteristic, so that the safety of chaotic communication is improved.
In order to solve the technical problems, the invention adopts the following technical scheme: an ultra-wideband chaotic light source based on light injection, comprising: discrete mode slave lasers, first couplers, optical circulators, third couplers, optical isolators, discrete mode master lasers, ring fibers, first polarizers, attenuators, second couplers,
the laser output by the discrete mode from the laser is divided into two beams after passing through a first coupler, one beam returns to the discrete mode from the laser through an annular optical fiber, the other beam is incident to a second coupler after passing through an optical circulator, the other beam is divided into two beams after passing through the second coupler, one beam is used as an output end to directly output chaotic light, the other beam returns to the optical circulator after passing through an attenuator and a third coupler in sequence, and then is fed back to the discrete mode from the laser through the first coupler;
the injection laser output by the discrete mode main laser enters the third coupler after passing through the optical isolator, and then enters the discrete mode slave laser after passing through the optical circulator and the first coupler.
The ultra-wideband chaotic light source based on light injection further comprises: a second polarizer and a third polarizer, the second polarizer being disposed between the discrete mode slave laser and the first coupler for adjusting the laser light output from the laser by the discrete mode and the polarization state of the laser light injected or fed back to the discrete mode slave laser;
the third polarizer is disposed between the optical isolator and the third coupler for adjusting the polarization state of the injected laser light entering the third coupler to match the discrete mode slave laser.
The ultra-wideband chaotic light source based on light injection further comprises: and the erbium-doped fiber amplifier is arranged between the optical isolator and the third polarizer and used for adjusting the power of the injected laser.
The first coupler and the second coupler are 50:50 optical fiber couplers, and the third coupler is a 30:30 optical fiber coupler.
In addition, the invention also provides an ultra-wideband chaotic generating device, which comprises two ultra-wideband chaotic light sources, a fourth coupler and a photoelectric balance detector, wherein the output ends of the two wideband chaotic light sources are respectively connected with one input end of the fourth coupler, the two output ends of the fourth coupler are respectively connected with one input end of the photoelectric balance detector, and the photoelectric balance detector outputs ultra-wideband chaotic signals.
The fourth coupler is a 2×2 fiber optic coupler.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides an ultra-wideband chaotic light source and an ultra-wideband chaotic generating device based on light injection, which adopt a discrete mode laser, and because the discrete mode laser has the characteristics of one mode enhancement and the other mode suppression, the discrete mode laser has the characteristics of high bandwidth, low sensitivity and high modulation response, the bandwidth of the obtained broadband chaotic light source is high, the discrete mode laser is used as a main laser to carry out light injection on the other discrete mode laser, the bandwidth of a slave laser is further expanded, and the ultra-wideband chaotic signal with high bandwidth and eliminated time delay characteristics can be obtained by a method of coupling the chaotic signal generated by light injection in an optical fiber coupler.
Drawings
Fig. 1 is a light path diagram of an ultra-wideband chaotic light source based on light injection according to an embodiment of the present invention;
FIG. 2 is a graph of the chaotic laser frequency spectrum output by the DFB laser and the DM laser under optical feedback;
fig. 3 is a light path diagram of an ultra-wideband chaotic generating device according to a second embodiment of the present invention;
fig. 4 is an autocorrelation graph (a) of a chaotic signal obtained by a DFB laser under an optical feedback condition and an autocorrelation graph (b) of an ultra wideband chaotic signal obtained by the second embodiment of the present invention.
In the figure: 1-discrete mode slave laser, 2-first polarizer, 3-first coupler, 4-optical circulator, 5-third coupler, 6-third polarizer, 7-erbium-doped fiber amplifier, 8-optical isolator, 9-discrete mode master laser, 10-ring fiber, 11-third polarizer, 12-attenuator, 13-second coupler, 14-fourth coupler, 15-photoelectric balance detector, 16-broadband chaotic light source.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, a first embodiment of the present invention provides an ultra-wideband chaotic light source based on light injection, including: discrete mode slave laser 1, first coupler 3, optical circulator 4, third coupler 5, optical isolator 8, discrete mode master laser 9, ring fiber 10, first polarizer 11, attenuator 12, second coupler 13; the laser output by the discrete mode from the laser 1 is divided into two beams after passing through the first coupler 3, one beam returns to the discrete mode from the laser 1 through the annular optical fiber 10, the other beam is incident to the second coupler 13 after passing through the optical circulator 4, the other beam is divided into two beams after passing through the second coupler 13, one beam is used as an output end to directly output chaotic light, the other beam sequentially passes through the attenuator 12, the second coupler 13 and the third coupler 5 and returns to the optical circulator 4, and then the laser 1 is fed back to the discrete mode from the laser through the first coupler 3; the injection laser output by the discrete mode main laser 9 enters the third coupler 5 after passing through the optical isolator 8, and then enters the discrete mode slave laser 1 after passing through the optical circulator 4 and the first coupler 3. The optical isolator 8 is used for placing stray light generated by an external device into the discrete mode main laser 9 to disturb the stray light.
An ultra-wideband chaotic light source based on light injection of this embodiment, still include: a second polarizer 2 and a third polarizer 6, the second polarizer 2 being disposed between the discrete mode slave laser 1 and the first coupler 3 for adjusting the laser light output from the discrete mode slave laser 1 and the polarization state of the laser light injected or fed back to the discrete mode slave laser 1; the third polarizer 6 is arranged between the optical isolator 8 and the third coupler 5 for adjusting the polarization state of the injected laser light entering the third coupler 5 to match the discrete mode slave laser 1.
An ultra-wideband chaotic light source based on light injection of this embodiment, still include: an erbium-doped fiber amplifier 7, the erbium-doped fiber amplifier 7 being disposed between the optical isolator 8 and the third polarizer 6 for adjusting the power of the injected laser light.
Specifically, in the present embodiment, the discrete mode slave laser 1 and the discrete mode master laser 9 are each a discrete mode laser, each of which supplies a bias current from a low noise current source (Newport 501). The difference Deltav between the laser frequencies when the two lasers are stationary 0 Known as optical frequency vector resonance. The wavelength of the discrete mode main laser 9 is fine-tuned experimentally using a temperature controller (ILX Lightwave LDT-5412) to achieve tuning of optical frequency mismatch. The spectrum, intensity waveform and spectrum of the chaotic laser are measured by a spectrometer (Agilent 86140B) with resolution of 0.06nm, a real-time oscilloscope with 500MHz bandwidth and a spectrum analyzer (Agilengte 4407B) respectively. To be seen asThe complete spectrum was examined and photoelectric conversion was performed before the spectrometer with a photodetector (u 2tXPDV 2120R) having a bandwidth of 47 GHz. The discrete mode slave laser 1 (EP 1550-DM-T) used in the experiment had a threshold current of 12mA, a bias current of 1.27Ith and a wavelength of about 1550 nm.
In this embodiment, the output of the discrete mode slave laser 1 is divided into two beams by the second coupler 13, one beam is used as an output end to directly output chaotic light, the other beam sequentially passes through the attenuator 12, and the third coupler 5 and returns to the optical circulator 4 to form optical feedback, in addition, the other discrete mode laser seat is used as a main laser, and the injection laser output by the other discrete mode laser seat and the optical feedback laser are coupled together by the third coupler 5 and then are sent into the discrete mode slave laser 1 together, so that the discrete mode slave laser acts, and the chaotic light is generated under the dual effects of optical injection and optical feedback, and the bandwidth is improved. When chaos is generated by using the light injection method, when the detuning amount is reduced, the injected light frequency gradually advances into the spectrum region of the laser, the high-frequency oscillation energy excited by beat frequency is increased, and the frequency domain approaches and combines with the chaos oscillation. As a result, the spectrum of the slave laser is broadened and the bandwidth is enhanced.
Under the condition that light injection is not considered (the discrete mode main laser 9 in fig. 1 is omitted), a spectrum diagram of chaotic laser obtained under the light feedback condition of the DFB laser and the discrete mode laser is shown in fig. 2, wherein (a) is a chaotic spectrum diagram of the DFB laser under the light feedback, the bandwidth is 9.31GHz, and fig. 2 (b) is a chaotic spectrum diagram of the discrete mode slave laser under the light feedback, the bandwidth is 20.29GHz, and the flatness is 5.67dB. Beyond the bandwidth range, the spectrum drops rapidly to the base noise. The discrete mode laser has high modulation response characteristic, and the obtained chaotic laser bandwidth is greatly expanded when the discrete mode laser is adopted.
In this embodiment, the first coupler 3 is a 50:50 2×2 fiber coupler, and the first coupler 3 is connected to the ring-shaped optical fiber 10 to form a fiber ring, and the fiber ring period is 1.5ns, and the frequency period is about 666MHz. After the optical fiber ring is used, the phase dynamics of the chaotic light is converted into a low frequency band in a nonlinear manner due to the delayed self-timer effect in the multi-beam interference process caused by the optical fiber ring, so that the optical fiber ring can widen the frequency spectrum of the output chaotic light, the energy of the low frequency band is obviously improved, and the relaxation oscillation is basically eliminated.
Specifically, in this embodiment, the first coupler 3 and the second coupler 13 are fiber couplers of 50:50, and the third coupler 5 is a fiber coupler of 30:30.
Example two
As shown in fig. 3, the second embodiment of the present invention provides an ultra-wideband chaotic light source device, which includes the wideband chaotic light source 16 based on light injection in the first embodiment, and further includes a fourth coupler 14 and a photoelectric balance detector 15, wherein the fourth coupler 14 is a 2×2 optical fiber coupler, output ends of the two wideband chaotic light sources are respectively connected to one of input ends of the fourth coupler 14, two output ends of the fourth coupler 14 are connected to two input ends of the photoelectric balance detector 15, and the photoelectric balance detector 15 extracts heterodyne signals and outputs ultra-wideband chaotic signals.
In this embodiment, broadband chaotic laser generated by two broadband chaotic light sources 16 passes through an optical isolator, enters a 3dB optical fiber coupler for coupling beat frequency, and then a photoelectric balance detector (BPD) 15 extracts heterodyne signals.
In the embodiment, the ultra-wideband chaotic signal is generated by constructing a method of coupling the chaotic signal generated by light injection in the optical fiber coupler to beat frequency, so that the time delay characteristic of the chaotic signal can be eliminated, and the ultra-wideband chaotic signal without time delay is obtained, as shown in fig. 4, wherein a is an autocorrelation diagram of the chaotic signal obtained by the DFB laser under the condition of light feedback, b is an autocorrelation diagram of the ultra-wideband chaotic signal obtained by the embodiment, and side lobes of the autocorrelation diagram disappear, which indicates that the time delay characteristic of the ultra-wideband chaotic signal obtained by the embodiment is inhibited.
The method of coupling the chaotic signals generated by injecting two beams of light into the optical fiber coupler to beat frequency is used for generating ultra-wideband chaos, and the laser phase dynamics of a high-speed broadband can be generated during strong feedback, and frequency detuning of the laser has obvious influence on the ultra-wideband chaos bandwidth, so that the phase dynamics can be converted into intensity dynamics after beating frequency. When the feedback intensity becomes large, the laser can generate complex phase dynamic, the phase time sequence oscillation of the laser is more complex, the frequency spectrum becomes not provided with obvious relaxation oscillation peaks, and the frequency spectrum is widened and flattened, so that the chaotic bandwidth is increased. For heterodyne signals, only two chaotic beat signals are extracted, and all external cavity mode beat frequencies of the chaotic signals are different or non-resonant. Furthermore, the heterodyne signal will no longer have external cavity resonance, i.e. no delay characteristics.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (6)

1. An ultra-wideband chaotic light source based on light injection, which is characterized by comprising: discrete mode slave laser (1), first coupler (3), optical circulator (4), third coupler (5), optical isolator (8), discrete mode master laser (9), annular optical fiber (10), first polarizer (11), attenuator (12), second coupler (13),
the laser output by the discrete mode from the laser (1) is divided into two beams through a first coupler (3), one beam returns to the discrete mode from the laser (1) through an annular optical fiber (10), the other beam is incident to a second coupler (13) after passing through an optical circulator (4), the other beam is divided into two beams through the second coupler (13), one beam is used as an output end to directly output chaotic light, the other beam sequentially passes through an attenuator (12), returns to the optical circulator (4) after passing through a third coupler (5), and then is fed back to the discrete mode from the laser (1) through the first coupler (3);
the injection laser output by the discrete mode main laser (9) enters the third coupler (5) after passing through the optical isolator (8), and then enters the discrete mode slave laser (1) after passing through the optical circulator (4) and the first coupler (3).
2. The ultra-wideband chaotic light source based on light injection according to claim 1, further comprising: a second polarizer (2) and a third polarizer (6), wherein the second polarizer (2) is arranged between the discrete mode slave laser (1) and the first coupler (3) and is used for adjusting the laser output by the discrete mode slave laser (1) and the polarization state of the laser injected into or fed back to the discrete mode slave laser (1);
the third polarizer (6) is arranged between the optical isolator (8) and the third coupler (5) and is used for adjusting the polarization state of the injected laser light entering the third coupler (5) to match with a discrete mode slave laser (1).
3. The ultra-wideband chaotic light source based on light injection according to claim 2, further comprising: and an erbium-doped fiber amplifier (7), wherein the erbium-doped fiber amplifier (7) is arranged between the optical isolator (8) and the third polarizer (6) and is used for adjusting the power of the injected laser.
4. An ultra wideband chaotic light source based on optical injection according to claim 2, wherein the first coupler (3) and the second coupler (13) are optical fiber couplers of 50:50, and the third coupler (5) is an optical fiber coupler of 30:30.
5. The ultra-wideband chaotic light source is characterized by comprising two ultra-wideband chaotic light sources according to claim 1, and further comprising a fourth coupler (14) and a photoelectric balance detector (15), wherein the output ends of the two wideband chaotic light sources are respectively connected with one input end of the fourth coupler (14), the two output ends of the fourth coupler (14) are respectively connected with one input end of the photoelectric balance detector (15), and the photoelectric balance detector (15) outputs ultra-wideband chaotic signals.
6. The ultra-wideband chaos generating apparatus according to claim 5, wherein said fourth coupler (14) is a 2 x 2 fiber coupler.
CN202310057971.9A 2023-01-17 2023-01-17 Ultra-wideband chaotic light source and ultra-wideband chaotic generating device based on light injection Pending CN116366224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310057971.9A CN116366224A (en) 2023-01-17 2023-01-17 Ultra-wideband chaotic light source and ultra-wideband chaotic generating device based on light injection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310057971.9A CN116366224A (en) 2023-01-17 2023-01-17 Ultra-wideband chaotic light source and ultra-wideband chaotic generating device based on light injection

Publications (1)

Publication Number Publication Date
CN116366224A true CN116366224A (en) 2023-06-30

Family

ID=86905868

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310057971.9A Pending CN116366224A (en) 2023-01-17 2023-01-17 Ultra-wideband chaotic light source and ultra-wideband chaotic generating device based on light injection

Country Status (1)

Country Link
CN (1) CN116366224A (en)

Similar Documents

Publication Publication Date Title
CN110797745B (en) Broadband chaos generating device without time delay characteristic
CN111277338B (en) Device for generating broadband chaotic laser
CN109244823B (en) Chaotic laser generation method and system with hidden high-bandwidth and time-delay labels
CN108508676B (en) Interval adjustable optical frequency comb based on phase modulation and optical fiber cavity soliton and generation method
CN110571641B (en) Method and device for suppressing chaotic time delay by using broadband spontaneous emission quantum noise
CN110677235B (en) Method and device for generating broadband white chaos
CN107979423B (en) Feedback chaotic system introducing dispersion hidden time delay
Yang et al. Flat broadband chaos generation using a semiconductor laser subject to asymmetric dual-path optical feedback
Li et al. Correlation optical time domain reflectometry based on broadband random optoelectronic oscillator
Jia et al. A novel highly stable dual-wavelength short optical pulse source based on a dual-loop optoelectronic oscillator with two wavelengths
CN116366224A (en) Ultra-wideband chaotic light source and ultra-wideband chaotic generating device based on light injection
US11929585B2 (en) Mixer-based microwave signal generation device
CN111653932A (en) Chaotic laser device based on light injection amplified spontaneous emission suppression time delay
Wang et al. Wideband and flat-spectrum chaos generation from a semiconductor laser with strong dispersive light feedback
CN113890723B (en) Device and method for enhancing safety of common-drive chaotic synchronization system
Wang et al. Experimental investigation on evolution of a split multi-wavelength bright-dark pulse in a mode-locked thulium-doped fiber laser
Pan et al. 100 Gb/s all-optical clock recovery based on a monolithic dual-mode DBR laser
Williams et al. Stabilization of an injection locked harmonically mode-locked laser via polarization spectroscopy for frequency comb generation
CN219329481U (en) Broadband complex chaotic laser generating device
CN216929166U (en) Chaotic laser generating device capable of hiding delay characteristic and improving bandwidth thereof
Ge et al. Optical-injection-seeded optical frequency comb generation promoted by the sub-harmonic modulation
CN113488839B (en) Broadband chaotic laser generation device and method based on asymmetric double-path optical feedback
Du et al. Tunable Optical Comb Generation Utilizing an Optoelectronic Oscillator Based on Stimulated Brillouin Scattering
Salik et al. EDFA-based coupled opto-electronic oscillator and its phase noise
Yi et al. Time Duration Tunable Fourier Domain Mode-Locked Optoelectronic Oscillator Based on a Frequency Shifting Loop

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