CN101977065A - Ultra-wide band (UWB) chaotic signal generator - Google Patents
Ultra-wide band (UWB) chaotic signal generator Download PDFInfo
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- CN101977065A CN101977065A CN2010105089437A CN201010508943A CN101977065A CN 101977065 A CN101977065 A CN 101977065A CN 2010105089437 A CN2010105089437 A CN 2010105089437A CN 201010508943 A CN201010508943 A CN 201010508943A CN 101977065 A CN101977065 A CN 101977065A
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Abstract
The invention discloses an ultra-wide band (UWB) chaotic signal generator. An annular structure system is composed of a drive laser, a response laser, a driven laser and an optical circulator; the output of one of the three lasers is injected into another laser through the optical circulator; the output light of the drive laser enters an Er-doped fiber amplifier through the optical circulator and is amplified, then the polarization state of the light is controlled by a polarization controller, and the light is injected into the response laser through a port of the optical circulator; the output light of the response laser enters the Er-doped fiber amplifier through the optical circulator and is amplified; the amplified light goes through a port of an optical fiber coupler, the polarization state of one part of the light is controlled by the polarization controller, and then the light is injected into the driven laser through the port of the optical circulator; the output light of the driven laser goes through the port of the optical circulator and is processed by an attenuator; the polarization state of the light is controlled by the polarization controller, and the light is injected into the drive laser through the port of the optical circulator; and the process is performed circularly and finally the wide-band chaotic laser is generated and output from one end of an optical coupler.
Description
Technical field
The present invention relates to a kind of broadband chaos signal generator, specifically, is a kind of device that utilizes the semiconductor laser ring to produce the ultra wide band chaotic laser signal, field such as be applied to optical communication, radar detection, laser ranging and maintain secrecy.
Technical background
Semiconductor laser can produce chaotic laser light down in additional disturbance (light feeds back, light beam is gone into or electro-optical feedback). and the numerous application such as chaotic secret communication, chaotic laser light radar, quick randomizer, relevant chaos light time domain reflectometer and optical coherence tomography based on chaotic laser light are proposed in succession.Bandwidth is to weigh the important indicator of chaotic laser light quality, it is directly determining the application quality of chaotic laser light in different field, and for example: bandwidth is determining the certainty of measurement of signal rate, chaotic laser light radar and relevant chaos light time domain reflectometer that chaotic secret communication can be hidden, the key technical index such as generation speed of random number.
Because be subject to the relaxation oscillation frequency of semiconductor laser, the bandwidth of traditional chaotic laser light is for only being the GHz magnitude, this will seriously limit the application of chaotic laser light.Therefore, the chaotic laser light signal of generation ultra broadband is the research focus and the difficult point in present chaotic laser light field.People such as Wang Anbang utilize outer light beam to go into and light feedback associating disturbance effect, make the bandwidth of semiconductor laser bring up to 16.7GHz, inject modulation (the IEEE PhotonicsTechnology Letters that light frequency is realized the bandwidth of chaos light signal by changing simultaneously, Vol.20, p.1663,2008); People such as Hiroyuki Someya find the chaos light beam is gone into than the broadband chaotic laser light that can produce 12GHz in the lower slightly semiconductor laser of its light frequency (Optics Express, Vol.17, p.19536,2009); People such as Kristine E.Callan have utilized ultrafast pulse semiconductor laser and photoelectricity oscillation rings to combine to have produced the above smooth broadband chaos of 8GHz (Phys.Rev.Lett.Vol.104, p.113901,2010).
Though utilize present prior art, can be with the highest the carrying of chaotic laser light bandwidth of semiconductor laser output to 16.7GHz, but continuous development along with science and technology, especially the fast development of all optical communication, full light random number and high accuracy remote navigation system, people press for the more chaotic laser light of high bandwidth.
Summary of the invention
The purpose of this invention is to provide the smooth chaotic signal generating device of a kind of ultra broadband, realize that bandwidth surpasses the output of the smooth broadband chaotic signal of 40GHz (frequency spectrograph measuring range); Problem of the present invention is the semiconductor laser loop configuration of design frequency off resonance coupling, polarization state coupling, makes three lasers under the disturbance of suitable mutual injection, produces the smooth chaotic laser light signal of ultra broadband.
A kind of ultra wide band chaotic signal generator of the present invention is characterized in that forming a loop configuration system by the semiconductor laser of three magnetic tape trailer fibres by optical circulator.The output of three semiconductor lasers all is injected among the next laser via optical circulator.Wherein semiconductor laser is called drive laser, and semiconductor laser is called the response laser, and semiconductor laser is called from laser.The output light of drive laser arrives erbium-doped fiber amplifier via optical circulator, suitably amplify the back and control its polarization state by Polarization Controller, be injected in the response laser through the port III of optical circulator, the output light of response laser through the port IV of optical circulator to erbium-doped fiber amplifier, suitably amplify after the port V of fiber coupler, part light is controlled its polarization state by Polarization Controller and is injected into from laser through the port VI of optical circulator, from the output of laser through the port VII of optical circulator through attenuator, controlling its polarization state by Polarization Controller is injected in the drive laser by the port VIII of optical circulator, move in circles, the broadband chaotic laser light of Chan Shenging is by the end output of optical coupler at last.
A kind of ultra wide band chaotic signal generation apparatus provided by the invention, this device can realize that bandwidth surpasses 40GHz, the frequency spectrum flatness ultra wide band chaotic signal less than 5dB, are the wideest chaotic signals of bandwidth that experiment at present produces.The ultra wide band chaotic laser signal that utilizes the present invention to produce the transmission rate of optical communication can be increased to 40GHz, and the resolution of laser ranging will be increased to the mm order of magnitude, and random number speed reaches 20GHz.
Description of drawings
Fig. 1 is a ultra wide band chaotic signal generator structural representation of the present invention;
Fig. 2 utilizes the broadband chaotic signal of the 27GHz that the present invention produces;
Fig. 3 utilizes the broadband chaotic signal of the 40GHz that the present invention produces.
Among Fig. 1: 1: drive laser; 2: the response laser; 3: from laser; 4: optical circulator; 5: erbium-doped fiber amplifier; 6: Polarization Controller; 7: optical circulator; 8: erbium-doped fiber amplifier; 9: fiber coupler; 10: Polarization Controller; 11: optical circulator; 12: attenuator; 13: Polarization Controller.
Embodiment
Be further detailed below:
As shown in Figure 1, the present invention includes drive laser 1, response laser 2, from laser 3, optical circulator 4, erbium-doped fiber amplifier 5, Polarization Controller 5, fiber coupler 9 and attenuator 12 constitute.Wherein, drive laser 1, response laser 2 and be the dfb semiconductor laser from laser 3.
Implement the smooth chaotic signal generating device of a kind of ultra broadband of the present invention, be with the output light of drive laser 1 via optical circulator 4 to erbium-doped fiber amplifier 5, suitably amplify the back by Polarization Controller 6 its polarization states of control, be injected into response laser 2 through the port III of optical circulator 7, because the effect of beat frequency, can produce centre frequency and be higher than the vibration that 20GHz and width are about 2GHz, and the centre frequency of vibration always the frequency detuning with two lasers is identical; This chaotic signal injects from laser 3 through erbium-doped fiber amplifier 8, fiber coupler 9, Polarization Controller 10 and optical circulator 11, because it is less with the frequency detuning of drive laser 1 from laser 3, the light that is injected into drive laser 1 from laser 3 can make the relaxation oscillation of drive laser 1 strengthen, the centre frequency of relaxation oscillation is about 5GHz, and width is about 7GHz.Frequency detuning between laser (Δ v
1j=v
1-v
j, j=2,3) realize by the working temperature of adjusting semiconductor laser.Need stronger polarised light owing to utilize frequency detuning to produce the higher-order of oscillation, thus corresponding laser 2 and all need to amplify with erbium-doped fiber amplifier from the injection light of laser 3, and produce polarised light with Polarization Controller.After complete semiconductor laser ring formed, the existing oscillationg component of previous laser can make the vibration of a back laser be strengthened at the same frequency place.Like this, the oscillator signal of different frequency will constantly circulate in the laser ring and be strengthened, and finally produces smooth broadband chaotic signal, from the end output by optical coupler 9.
Above-mentioned broadband chaos signal generator is that the output of three semiconductor lasers all is injected among the next laser via optical circulator. inject polarization state of light and all control by Polarization Controller. be injected into corresponding laser 2 and from the luminous power of laser 3 all respectively by erbium-doped fiber amplifier control, and the luminous intensity that is injected into drive laser 1 is controlled by attenuator 12. respond laser 2 and from frequency detuning (the Δ v of laser 3 with respect to drive laser 1
1j=v
1-v
j, j=2,3) and realize that by the working temperature of adjusting semiconductor laser the broadband chaotic signal of Chan Shenging is exported by an end of fiber coupler 9 at last, when the wavelength of drive laser 1 is 1554.082nm, Δ v
12=25.3～26GHz; 0GHz＞Δ v
13During＞-4GHz, utilize optical circulator 7 of the present invention to realize the output of bandwidth for the ultra wide band chaotic signal of 27GHz, experimental result is seen accompanying drawing 2; When the wavelength of drive laser 1 is 1554.082nm, Δ v
12=33.0～36.0GHz; 0GHz＞Δ v
13During＞-6GHz, utilize optical circulator 7 of the present invention to realize the output of bandwidth for the ultra wide band chaotic signal of 40GHz, experimental result is seen accompanying drawing 3.Accompanying drawing 2 and accompanying drawing 3 show: the smooth chaotic signal generating device of a kind of ultra broadband that utilizes the present invention to propose, can produce the ultra wide band chaotic laser signal of flatness less than 5dB, and maximum bandwidth is 40GHz or higher.
Claims (1)
1. ultra wide band chaotic signal generator, its described generator are to constitute a loop configuration system by drive laser (1), response laser (2) with from laser (3) by optical circulator (4); Drive laser (1), response laser (2) and be injected into next laser via optical circulator (4) from the output of laser (3), wherein:
The output light of described drive laser (1) arrives erbium-doped fiber amplifier (5) via optical circulator (4), amplify the back and control its polarization state by Polarization Controller (6), be injected into response laser (2) through the port III of optical circulator (7), the output light of response laser (2) through the port IV of optical circulator (7) to erbium-doped fiber amplifier (8), amplify after the port V of fiber coupler (9), part light is controlled its polarization state by Polarization Controller (10) and is injected into from laser (3) through the port VI of optical circulator (11), from the output of laser (3) through the port VII of optical circulator (11) through attenuator (12), control its polarization state by Polarization Controller (13) and be injected into drive laser (1) by the port VIII of optical circulator (4), move in circles, produce the broadband chaotic laser light and export by optical coupler (9) one ends.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280815A (en) * | 2011-07-16 | 2011-12-14 | 太原理工大学 | Optical feedback chaos laser |
| CN102386560A (en) * | 2011-07-07 | 2012-03-21 | 电子科技大学 | Broad-band optical chaotic signal source chip structure based on ring laser |
| CN102506917A (en) * | 2011-12-03 | 2012-06-20 | 太原理工大学 | Optical fiber sensing device for optical fiber chaos laser device and method thereof |
| CN102594544A (en) * | 2012-01-04 | 2012-07-18 | 太原理工大学 | Spectral broadening device for chaotic laser signals and method thereof |
| CN102882127A (en) * | 2012-09-19 | 2013-01-16 | 大连理工大学 | Photoinjection-type chaotic photonic integration device and preparation method thereof |
| CN103368653A (en) * | 2013-07-22 | 2013-10-23 | 太原理工大学 | Method and device for generating broadband chaotic signal similar to white noise |
| CN105005052B (en) * | 2015-06-05 | 2017-06-09 | 太原理工大学 | Light carries ultra wide band remote microwave photon chaos MIMO imaging radars |
| CN107086904A (en) * | 2017-05-23 | 2017-08-22 | 西南大学 | The Chaotic Wideband Signal generating means that centre wavelength is tunable |
| CN108155559A (en) * | 2017-12-25 | 2018-06-12 | 武汉电信器件有限公司 | A kind of chaos semiconductor laser and its application method based on random light feedback |
| CN108199259A (en) * | 2017-12-25 | 2018-06-22 | 武汉光迅科技股份有限公司 | A kind of joint disturbance formula chaotic laser light signal generator and its application method |
| CN110426067A (en) * | 2019-07-25 | 2019-11-08 | 武汉钜风科技有限公司 | A kind of Brillouin's time-domain analysis system and method based on multi-core optical fiber |
| CN110632764A (en) * | 2019-10-31 | 2019-12-31 | 太原理工大学 | Chaotic light generating device based on TOAD ring |
| CN110850129A (en) * | 2019-10-18 | 2020-02-28 | 广东工业大学 | Broadband-controllable photon millimeter wave noise signal generator and signal generating method thereof |
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| CN1892732A (en) * | 2005-07-05 | 2007-01-10 | 三星电机株式会社 | Chaotic signal generator for ultra wide band communication system |
| US20080263119A1 (en) * | 2007-04-19 | 2008-10-23 | Harris Corporation | Digital Generation of a Chaotic Numerical Sequence |
| CN101520509A (en) * | 2009-02-13 | 2009-09-02 | 上海大学 | Method for comparatively measuring range of interframe of chaotic light time domain waveform |
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2010
- 2010-10-13 CN CN 201010508943 patent/CN101977065B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1892732A (en) * | 2005-07-05 | 2007-01-10 | 三星电机株式会社 | Chaotic signal generator for ultra wide band communication system |
| US20080263119A1 (en) * | 2007-04-19 | 2008-10-23 | Harris Corporation | Digital Generation of a Chaotic Numerical Sequence |
| CN101520509A (en) * | 2009-02-13 | 2009-09-02 | 上海大学 | Method for comparatively measuring range of interframe of chaotic light time domain waveform |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386560A (en) * | 2011-07-07 | 2012-03-21 | 电子科技大学 | Broad-band optical chaotic signal source chip structure based on ring laser |
| CN102386560B (en) * | 2011-07-07 | 2013-04-03 | 电子科技大学 | Broad-band optical chaotic signal source chip structure based on ring laser |
| CN102280815A (en) * | 2011-07-16 | 2011-12-14 | 太原理工大学 | Optical feedback chaos laser |
| CN102280815B (en) * | 2011-07-16 | 2012-08-08 | 太原理工大学 | Optical feedback chaos laser |
| CN102506917A (en) * | 2011-12-03 | 2012-06-20 | 太原理工大学 | Optical fiber sensing device for optical fiber chaos laser device and method thereof |
| CN102594544A (en) * | 2012-01-04 | 2012-07-18 | 太原理工大学 | Spectral broadening device for chaotic laser signals and method thereof |
| CN102594544B (en) * | 2012-01-04 | 2015-01-14 | 太原理工大学 | Spectral broadening device for chaotic laser signals and method thereof |
| CN102882127B (en) * | 2012-09-19 | 2014-04-02 | 大连理工大学 | Photoinjection-type chaotic photonic integration device and preparation method thereof |
| CN102882127A (en) * | 2012-09-19 | 2013-01-16 | 大连理工大学 | Photoinjection-type chaotic photonic integration device and preparation method thereof |
| CN103368653A (en) * | 2013-07-22 | 2013-10-23 | 太原理工大学 | Method and device for generating broadband chaotic signal similar to white noise |
| CN103368653B (en) * | 2013-07-22 | 2016-02-17 | 太原理工大学 | A kind of production method of Chaotic Wideband Signal of similar white noise and device |
| CN105005052B (en) * | 2015-06-05 | 2017-06-09 | 太原理工大学 | Light carries ultra wide band remote microwave photon chaos MIMO imaging radars |
| CN107086904A (en) * | 2017-05-23 | 2017-08-22 | 西南大学 | The Chaotic Wideband Signal generating means that centre wavelength is tunable |
| CN107086904B (en) * | 2017-05-23 | 2023-05-23 | 西南大学 | Broadband chaotic signal generating device with tunable center wavelength |
| CN108155559A (en) * | 2017-12-25 | 2018-06-12 | 武汉电信器件有限公司 | A kind of chaos semiconductor laser and its application method based on random light feedback |
| CN108199259A (en) * | 2017-12-25 | 2018-06-22 | 武汉光迅科技股份有限公司 | A kind of joint disturbance formula chaotic laser light signal generator and its application method |
| CN110426067A (en) * | 2019-07-25 | 2019-11-08 | 武汉钜风科技有限公司 | A kind of Brillouin's time-domain analysis system and method based on multi-core optical fiber |
| CN110850129A (en) * | 2019-10-18 | 2020-02-28 | 广东工业大学 | Broadband-controllable photon millimeter wave noise signal generator and signal generating method thereof |
| CN110632764A (en) * | 2019-10-31 | 2019-12-31 | 太原理工大学 | Chaotic light generating device based on TOAD ring |
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