CN104600560B - Broadband chaos optical transmitting set based on Integrated-External Cavity Semiconductor Laser - Google Patents
Broadband chaos optical transmitting set based on Integrated-External Cavity Semiconductor Laser Download PDFInfo
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Abstract
A kind of broadband chaos optical transmitting set based on Integrated-External Cavity Semiconductor Laser, including：One Integrated-External Cavity Semiconductor Laser；One or three ports light rings, its second port is connect with Integrated-External Cavity Semiconductor Laser, optical signal for receiving backfeed loop passes to Integrated-External Cavity Semiconductor Laser, the optical signal for receiving Integrated-External Cavity Semiconductor Laser generation simultaneously is sent into backfeed loop, and ensures the optical signal uniline transmission in backfeed loop；One photo-coupler, its the 4th port is connect with the output third port of three ports light rings, for Integrated-External Cavity Semiconductor Laser output to be sent into backfeed loop via the optical signal of ports light rings according to a preset power ratio part, part output, the fifth port of the photo-coupler is connect with the first port of three ports light rings, backfeed loop is formed, the 6th port of the photo-coupler is chaos light signal output end mouth.
Description
Technical field
The present invention relates to chaos optical transmitting set technical fields, refer in particular to a kind of width based on Integrated-External Cavity Semiconductor Laser
Band chaos optical transmitting set.
Background technology
It is sharply increased with the rapid development number of network users of Internet technology, internet has become people's information
The main platform of transmission.The confidentiality of network has become the focus of attention in recent years, and safe and reliable communication network pacifies national defence
Entirely, the privacy of enterprise and individual have close relationship.At present generally using the software encryption technique based on public's key.
However as the promotion of computer computation ability, the safety of the encryption technology receives acid test.By being based on physics
The cryptographic means of level replace existing algorithm for encryption technology, build relatively reliable secret signalling have it is particularly significant
Meaning.
Semiconductor laser can generate the chaotic signal of high quality under light feedback, electro-optical feedback and light injection.It is this
Chaotic signal has many advantages, such as physical accidental, long-term unpredictable and extremely sensitive to original state, it has also become secret communication is led
The important alternative in domain.It is made simply moreover, semiconductor laser has, can integrate, can be mass-produced, the operation is stable,
The application that the features such as with existing communication net mate is all it in secret communication is laid a good foundation.In addition, the chaos of high quality
Optical signal is generated in physical random number, has important application in terms of laser radar and domain reflectometer.
Currently, the generation of chaos light mainly passes through the additional smooth injected system of distributed feedback semiconductor laser, light reponse system
To realize.These technologies are based on discrete device and external circuits auxiliary, need accurately to adjust each device, body in experiment
Product and stability, which become, to be needed to overcome the problems, such as in practical application.Chaos optical transmitting set based on semiconductor integrated chip, with
It minimizes, can single-chip integration, stable working state and the advantages that be not easy to be interfered by ambient environmental factors, become messenger in recent years
The hot spot studied.But the chaotic signal Bandwidth-Constrained generated by integrated chip shakes frequency in the relaxation of laser, generally
10GHz hereinafter, and the chaos working condition range very little that generates, it is random in high speed chaotic communication and high speed to directly affect it
Application in terms of number generation.
Therefore, the previous urgent problems of mesh are exactly：The chaos bandwidth for improving integrated device, expands the work of chaos state
Range solves the deficiency of semiconductor integrated chip in practical applications, realizes that broadband, high integration, the high-quality of high stability are mixed
Ignorant optical transmitting set.
Invention content
The object of the present invention is to provide a kind of broadband chaos optical transmitting set based on Integrated-External Cavity Semiconductor Laser,
It can overcome the shortcomings of that chaotic signal is in terms of bandwidth and working range produced by general Integrated-External Cavity Semiconductor Laser, this hair
Bright needs an Integrated-External Cavity Semiconductor Laser chip and the optical feedback return circuit of an outside to achieve that broadband is stablized greatly
The chaos optical signal of range generates, and has integrated level high, compact-sized, stability is good, and manufacture craft is simple, at low cost, is easy to
The advantages of realization.
The present invention provides a kind of broadband chaos optical transmitting set based on Integrated-External Cavity Semiconductor Laser, including：
One Integrated-External Cavity Semiconductor Laser；
One or three ports light rings, second port are connect with Integrated-External Cavity Semiconductor Laser, are fed back to for receiving
The optical signal on road passes to Integrated-External Cavity Semiconductor Laser, while receiving the optical signal of Integrated-External Cavity Semiconductor Laser generation
It is sent into backfeed loop, and ensures the optical signal uniline transmission in backfeed loop；
One photo-coupler, the 4th port are connect with the output third port of three ports light rings, outer for that will integrate
Cavity semiconductor laser is exported is sent into backfeed loop via the optical signal of ports light rings according to a preset power ratio part,
Part output, the fifth port of the photo-coupler are connect with the first port of three ports light rings, form backfeed loop, should
The third port of photo-coupler is chaos light signal output end mouth.
The beneficial effects of the invention are as follows：The core devices generated as chaos light using Integrated-External Cavity Semiconductor Laser,
Using the backfeed loop of full light come self seeding integrated chip, good chaotic signal output is realized.This method only needs one
Integrated-External Cavity Semiconductor Laser chip and the optical feedback return circuit of an outside achieve that broadband, stablize, and working range is wide
Chaos optical signal generates, and has integrated level high, compact-sized, stability is good, and manufacture craft is simple, at low cost, it is easy to accomplish
Advantage.
Description of the drawings
For the particular technique feature further illustrated the present invention, below in conjunction with specific embodiment, and with reference to attached drawing, to this hair
It is bright to be described in further details, wherein：
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the block diagram of the specific implementation mode of the present invention；
Fig. 3 is the structural schematic diagram of Integrated-External Cavity Semiconductor Laser a.
Specific implementation mode
Referring to Fig. 1, shown in Fig. 2 and Fig. 3, it is mixed that the present invention provides a kind of broadband based on Integrated-External Cavity Semiconductor Laser
Ignorant optical transmitting set, including：
One Integrated-External Cavity Semiconductor Laser a, used Integrated-External Cavity Semiconductor Laser a is that one kind being integrated with DFB
The three-stage semiconductor laser (refering to Fig. 3) in area is fed back in laser area, phase region and amplification, and the integrated cavity semiconductor swashs
The Distributed Feedback Laser area and amplification feedback area of light device a use the material of same band gap wavelength, the material band gap wavelength phase that phase region uses
For Distributed Feedback Laser area and amplification feedback area blue shift 80nm-120nm, absorption loss of the phase region to light field can be reduced in this way, it is real
The phase adjusted of existing feedback light, used Integrated-External Cavity Semiconductor Laser a can by adjust Distributed Feedback Laser area, phase region and
The Injection Current in amplification feedback area realizes single-mode output and a wide range of tunable dual-mode laser output of spacing, and described is integrated
Each segment length of external cavity semiconductor laser a can be adjusted, the dual-mode of operation range for controlling generated dual-mode laser, institute
The Integrated-External Cavity Semiconductor Laser a of use, the end face close to Distributed Feedback Laser area one end are light-emitting surface, are used for and three ports
The port 2 of circulator connects；
One or three ports light rings b, second port 12 are connect with Integrated-External Cavity Semiconductor Laser a, anti-for receiving
The optical signal for being fed back to road passes to Integrated-External Cavity Semiconductor Laser a, while receiving what Integrated-External Cavity Semiconductor Laser a was generated
Optical signal be sent into backfeed loop, and ensure backfeed loop in optical signal along from three ports light rings b second port 12,
The third port 13 of three ports light rings b, the first port 11 of photo-coupler c (chatting afterwards) and three ports light rings b
Direction uniline transmission；
One photo-coupler c, the 4th port 21 are connect with the output end of three ports light rings b, are used for integrated exocoel
Semiconductor laser a outputs are sent into backfeed loop via the optical signal of ports light rings b according to a preset power ratio part,
Part output, which is used to adjust the ratio of output signal and the luminous power of feeding backfeed loop, described by optocoupler
The optical signal of the 6th port 23 output of clutch c is to be sent into a photodetector, to generate chaos electric signal, the photo-coupler
The fifth port 22 of c is connect with the first port 11 of three ports light rings b；
Wherein three ports light rings b and photo-coupler c form backfeed loop, the arbitrary node in the backfeed loop
Place further includes a single-mode fiber (not shown), and the length by adjusting single mode optical fiber controls the length of backfeed loop；It is described anti-
It is fed back between the third port 13 of Lu Zhongsan ports light rings b and the 4th port 21 of photo-coupler c and also may include an optical fiber
Amplifier d, the power of the optical signal for amplifying Integrated-External Cavity Semiconductor Laser a outputs, improves the chaos light finally generated
Power, and make into backfeed loop optical signal power improve, more than excitation Integrated-External Cavity Semiconductor Laser a enter chaos
The threshold value of state；Integrated outside cavity gas laser output power and it is sufficiently high with the coupling Slop efficiency of optical fiber when, fiber amplifier
Device d can be omitted.The first port of the fifth port 22 of photo-coupler c and three ports light rings b in the backfeed loop
It also may include an adjustable optical attenuator e between 11, the power of the optical signal for controlling backfeed loop；Light in the backfeed loop
It also may include a Polarization Controller f between the fifth port 22 of coupler c and the first port 11 of three ports light rings b, use
The polarization state of the feedback signal of Integrated-External Cavity Semiconductor Laser a is injected from backfeed loop in control so that feedback signal light
The polarization state of polarization state and Integrated-External Cavity Semiconductor Laser a shoot lasers match.Such as system uses polarization maintaining optical fibre
Polarization-maintaining device is then not necessarily to Polarization Controller f.
The wherein first end of the fifth port 22 and three ports light rings b of the c of photo-coupler in the feedback loop
Adjustable optical attenuator e between mouth 11 and Polarization Controller f, with individualism or can exist simultaneously.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical solution and advantageous effect
Describe in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the protection of the present invention
Within the scope of.
Claims (9)
1. a kind of broadband chaos optical transmitting set based on Integrated-External Cavity Semiconductor Laser, including：
One Integrated-External Cavity Semiconductor Laser；
One or three ports light rings, second port (12) are connect with Integrated-External Cavity Semiconductor Laser, are fed back to for receiving
The optical signal on road passes to Integrated-External Cavity Semiconductor Laser, while receiving the optical signal of Integrated-External Cavity Semiconductor Laser generation
It is sent into backfeed loop, and ensures the optical signal uniline transmission in backfeed loop；
One photo-coupler, the 4th port (21) are connect with the output third port (13) of three ports light rings, for that will collect
It is sent into and feeds back according to a preset power ratio part via the optical signal of ports light rings at external cavity semiconductor laser output
Circuit, part output, the fifth port (22) of the photo-coupler are connect with the first port (11) of three ports light rings, shape
At backfeed loop, the 6th port (23) of the photo-coupler is chaos light signal output end mouth.
2. the broadband chaos optical transmitting set according to claim 1 based on Integrated-External Cavity Semiconductor Laser, wherein feeding back
Further include a single-mode fiber at arbitrary node in circuit, the length by adjusting single mode optical fiber controls the length of backfeed loop
Degree.
3. the broadband chaos optical transmitting set according to claim 1 based on Integrated-External Cavity Semiconductor Laser, wherein feeding back
It is also put comprising an optical fiber between the third port (13) of three ports light rings and the 4th port (21) of photo-coupler in circuit
Big device, the power of the optical signal for amplifying Integrated-External Cavity Semiconductor Laser output.
4. the broadband chaos optical transmitting set according to claim 1 based on Integrated-External Cavity Semiconductor Laser, wherein feeding back
Also include a tunable optical between the fifth port (22) of photo-coupler and the first port (11) of three ports light rings in circuit
Attenuator, the power of the optical signal for controlling backfeed loop.
5. the broadband chaos optical transmitting set according to claim 1 based on Integrated-External Cavity Semiconductor Laser, wherein feeding back
Also include that a polarization is controlled between the fifth port (22) of photo-coupler and the first port (11) of three ports light rings in circuit
Device processed, the polarization state for controlling the feedback signal for injecting Integrated-External Cavity Semiconductor Laser from backfeed loop.
6. the broadband chaos optical transmitting set according to claim 1 based on Integrated-External Cavity Semiconductor Laser, wherein being adopted
Integrated-External Cavity Semiconductor Laser be integrated with Distributed Feedback Laser area, phase region and amplification feedback area three-stage semiconductor swash
Light device.
7. the broadband chaos optical transmitting set according to claim 6 based on Integrated-External Cavity Semiconductor Laser, wherein being adopted
The Distributed Feedback Laser area and amplification feedback area of Integrated-External Cavity Semiconductor Laser use the material of same band gap wavelength, phase region
The material band gap wavelength of use is relative to Distributed Feedback Laser area and amplification feedback area blue shift 80nm-120nm.
8. the broadband chaos optical transmitting set according to claim 7 based on Integrated-External Cavity Semiconductor Laser, wherein being adopted
Integrated-External Cavity Semiconductor Laser is the Injection Current by adjusting Distributed Feedback Laser area, phase region and amplification feedback area, is realized
Single-mode output and a wide range of tunable dual-mode laser output of spacing.
9. the broadband chaos optical transmitting set according to claim 1 based on Integrated-External Cavity Semiconductor Laser, wherein by light
The optical signal of the 6th port (23) output of coupler is to be sent into a photodetector, to generate chaos electric signal.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104953468A (en) * | 2014-03-25 | 2015-09-30 | 中国科学院半导体研究所 | Four-segment amplification feedback laser structure for chaotic light emission |
| CN105762646B (en) * | 2016-04-20 | 2018-07-24 | 太原理工大学 | A kind of semiconductor chaos laser of collection feedback in pairs |
| CN105953784B (en) * | 2016-04-29 | 2018-09-04 | 重庆华渝电气集团有限公司 | Angular rate sensor based on chaotic signal |
| CN106330307B (en) * | 2016-11-04 | 2019-05-21 | 西南大学 | A kind of high speed visible light chaotic secret communication device based on visible LED |
| CN107591678B (en) * | 2017-09-08 | 2019-08-30 | 太原理工大学 | A kind of recognition methods of the chaotic laser light exocoel time delay based on coherent field |
| CN108155559B (en) * | 2017-12-25 | 2020-06-30 | 武汉电信器件有限公司 | Chaotic semiconductor laser based on random optical feedback and use method thereof |
| CN108199259B (en) * | 2017-12-25 | 2020-01-17 | 武汉光迅科技股份有限公司 | Combined disturbance type chaotic laser signal generator and using method thereof |
| CN109116371B (en) * | 2018-07-23 | 2023-05-26 | 中国科学院半导体研究所 | Doppler speed measuring radar based on dual-wavelength semiconductor laser |
| CN109600168B (en) * | 2018-12-14 | 2020-10-09 | 中国科学院半导体研究所 | Multifunctional signal source based on photonic integrated chip and operation method |
| CN111124362B (en) * | 2019-12-06 | 2022-03-15 | 太原理工大学 | High-speed physical random number generator based on monolithic integrated chaotic laser |
| CN111916993A (en) * | 2020-06-16 | 2020-11-10 | 太原理工大学 | Chaotic laser with wide tuning wavelength |
| CN113851925B (en) * | 2021-09-28 | 2023-04-07 | 太原理工大学 | Photonic integrated broadband chaotic laser |
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| US6763271B2 (en) * | 2001-04-12 | 2004-07-13 | The United States Of America As Represented By The Secretary Of The Navy | Tracking sustained chaos |
| US20100332575A1 (en) * | 2009-06-29 | 2010-12-30 | Ido Kanter | High-Speed Random Number Generator |
| CN202977962U (en) * | 2012-09-11 | 2013-06-05 | 哈尔滨工程大学 | Chaotic laser controller |
| CN102882608B (en) * | 2012-09-19 | 2015-04-29 | 大连理工大学 | Chaotic quadrature multiplexing secure optical fiber communication device and method |
| CN104051955B (en) * | 2014-06-26 | 2017-01-25 | 中国科学院半导体研究所 | Tunable photoproduction microwave source based on semiconductor double-module laser |
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