CN202217910U - Broadband optical chaos signal source chip structure based on ring laser - Google Patents
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- CN202217910U CN202217910U CN2011202386802U CN201120238680U CN202217910U CN 202217910 U CN202217910 U CN 202217910U CN 2011202386802 U CN2011202386802 U CN 2011202386802U CN 201120238680 U CN201120238680 U CN 201120238680U CN 202217910 U CN202217910 U CN 202217910U
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Abstract
The utility model discloses a broadband optical chaos signal source chip structure based on a ring laser, comprising the ring laser; wherein the ring laser comprises a waveguide resonant cavity, and an input waveguide and an output waveguide which are respectively coupled to the waveguide resonant cavity; an input section of the input waveguide and an output section of the output waveguide are arranged at the same side of the waveguide resonant cavity; the input waveguide comprises the input section, an extended section and a coupling section; the output waveguide comprises an extended section, a coupling section and the output section; and the broadband optical chaos signal source chip structure also comprises a single mode DFB (Distributed Feed Back) laser connected to the input section of the input waveguide and a Bragg grating connected to the extended section of the output waveguide, wherein the single mode DFB laser and the Bragg grating are respectively arranged at two sides of the waveguide resonant cavity. The broadband optical chaos signal source chip structure of the utility model has the beneficial effects of low cost, small size, low power consumption, high integrated level, etc.
Description
Technical field
The utility model belongs to the optical communication technique field, relates in particular to the optical integrated chip technical field that chaotic signal produces in the security photo-communication technical field.
Background technology
Along with the continuous development of information technology, particularly in fields such as finance, commerce, the confidentiality demand of communication is increasingly high, and information encryption also receives increasing concern.Traditional software encryption technique is based on the complexity of algorithm and the length of key, and the security performance of this method reduces along with the increase of amount of information, and because AES need consume the regular hour, enciphering rate is severely limited.Along with quantum-mechanical development, the quantum cryptography technology becomes the new lover of software cryptography, but this encryption method is to adopt the characteristic of light quantum that key is transmitted, and therefore the security performance to Global Information descends to some extent.Along with the increase to the demand of the secure communication of big capacity and two-forty, above encryption technology can not satisfy people's demand.After the sixties in 20th century, chaos phenomenon came to light, the communication mode of encoding at physical layer utilization chaotic carrier had improved the security performance and the enciphering rate of communication system greatly, becomes the new selection of information encryption.The optical chaos signal has randomlikeness, to the sensitive dependence of initial condition and the characteristics such as broadband power spectrum density of similar noise, make it be particularly suitable for security photo-communication.At present, the application of optical chaos signal in security photo-communication become of paramount importance in using, one of the most promising application of chaos.In addition, the autocorrelator trace of optical chaos signal has and is similar to the linear of δ function, and this characteristic makes chaotic signal also be widely used in the range laser radar system.At present, correlative study is all carried out in generation and application to the optical chaos signal in countries in the world.
The optical chaos signal by its producing method can be divided into generally that light beam is gone into, light feedback and three kinds of modes of electro-optical feedback.Exterior light is injected chaos system is meant increases a suitable intensity, appropriate frequency on laser outside injection light; Thereby make the injection light of CF and certain strength and the interaction of laser cavity inner laser field make laser works, produce chaotic signal at chaos state.The light feedback is meant at laser outside; Make the part of output light of laser turn back in the original laser through placing reflection device through behind the reflection device; Through regulating the feedback light intensity; Make the laser works of the feedback light disturbance receive certain intensity at chaos state, produce chaotic signal.Electro-optical feedback is meant and converts the part of the output light of laser to the signal of telecommunication, is superimposed through the bias current that amplifies time-delay back and laser and controls laser generation chaotic signal.Yet; More than the bandwidth of the optical chaos signal that produces of three kinds of modes narrower; And the transmission rate of signal and transmission capacity depend on the bandwidth as the optical chaos signal of carrier wave in the chaotic secret optical communication. therefore, the bandwidth that improves the optical chaos signal is the only way of realizing the secure communication of high speed chaotic laser light.
At present, occurred the mode of multiple generation broadband chaotic signal both at home and abroad, the most generally gone into the mode that dual mode combines, and produced the optical chaos signal of broader bandwidth based on light feedback and light beam.Wherein, the Distributed Feedback Laser that the most commonly utilizes two separation is respectively as master and slave laser.A kind of is outside main Distributed Feedback Laser chamber, to set up a speculum; The output light of main Distributed Feedback Laser is used the light-splitting device separated into two parts; Part light gets in the main Distributed Feedback Laser as feedback light after mirror reflects again; Be injected into from Distributed Feedback Laser after the adjustment of another part light through optics such as isolator, attenuators, make from Distributed Feedback Laser and be operated in chaos state, output broadband chaotic signal; Another kind is outside laser chamber, to set up a speculum; The light of the main Distributed Feedback Laser output of freely turning round is gone into to carrying out light beam from Distributed Feedback Laser after the adjustment of optics such as isolator and attenuator; Simultaneously; Through beam splitting device separated into two parts, a part of light gets into from Distributed Feedback Laser as feedback light through chamber external mirror reflection back again from the light of Distributed Feedback Laser output, and another part light is as exporting signal.This dual mode can both produce the optical chaos signal of broader bandwidth, but is made up of the therefore existing system configuration complicacy that is used to produce chaotic signal, poor stability, cost height a plurality of independent optics owing to produce the system of chaotic signal.
The utility model content
The purpose of the utility model is the deficiency that overcomes prior art, and a kind of broadband light chaos signal source chip structure based on ring laser is provided.
The technical scheme of the utility model is: a kind of broadband light chaos signal source chip structure based on ring laser; Comprise a ring laser; Said ring laser comprise a waveguide resonant cavity and respectively with one section input waveguide and one section output waveguide of waveguide resonant cavity coupling; The input section of said input waveguide and the deferent segment of output waveguide are positioned at the same side of waveguide resonant cavity; Said input waveguide comprises input section, extension and coupled section, and said output waveguide comprises extension, coupled section and deferent segment, it is characterized in that; Also comprise a single mode Distributed Feedback Laser and a Bragg grating that is connected the output waveguide extension that is connected the input section of input waveguide, said single mode Distributed Feedback Laser and Bragg grating lay respectively at the both sides of waveguide resonant cavity.
The extension of above-mentioned input waveguide also form one with input waveguide idle end in a certain angle, said idle end in order to the injection light of avoiding input waveguide in the light reflection of extension to injecting the interference of light.
Above-mentioned idle end and input waveguide are 5-10 degree angle.
The waveguide resonant cavity of above-mentioned ring laser is racetrack, annular, polygon or dish.
Another technical scheme of the utility model is: a kind of broadband light chaos signal source chip structure based on ring laser; Comprise a ring laser; Said ring laser comprise a waveguide resonant cavity and respectively with one section input waveguide and one section output waveguide of waveguide resonant cavity coupling; The input section of said input waveguide and the deferent segment of output waveguide are positioned at the same side of waveguide resonant cavity; Said input waveguide comprises input section, extension and coupled section, and said output waveguide comprises extension, coupled section and deferent segment, it is characterized in that; Said ring laser also comprises one section feedback waveguide that is positioned at the waveguide resonant cavity opposite side and is coupled with waveguide resonant cavity, and said feedback waveguide comprises extension, reflecting segment and coupled section; Said chip structure also comprises the single mode Distributed Feedback Laser and the Bragg grating that is connected feedback waveguide reflecting segment that are connected input waveguide input section, and said single mode Distributed Feedback Laser and Bragg grating lay respectively at the both sides of waveguide resonant cavity.
The extension of the extension of above-mentioned input waveguide, the extension of output waveguide and feedback waveguide also form one with self idle end in a certain angle, said idle end reflects the interference to normal light in order to avoid light.
Above-mentioned idle end and input waveguide are 5-10 degree angle.
The waveguide resonant cavity of above-mentioned ring laser is racetrack, annular, polygon or dish.
The beneficial effect of the utility model is: the source chip structure of the utility model is used to replace the existing system that is used to produce chaotic signal, the chaotic signal that this source chip structure produces be because the feedback light of the injection light of certain off-resonance frequency and intensity and certain intensity and the waveguide resonant cavity of ring laser interior laser field under the nonlinear interaction of ring laser and generation.This chip structure organically integrates ring laser with being used for light beam Distributed Feedback Laser of going into and the Bragg grating that is used for the light feedback, has many advantages such as low cost, small size, low-power consumption and high integration.And in this programme, a plurality of functional units connect through waveguide, have effectively reduced loss, can produce high-quality broadband light chaotic signal.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Description of reference numerals: ring laser 1; Waveguide resonant cavity 11; Input waveguide 12; The input section 121 of input waveguide; The extension 122 of input waveguide; The coupled section 123 of input waveguide; The idle end 124 of input waveguide; Output waveguide 13; The extension 132 of output waveguide; The deferent segment 131 of output waveguide; The coupled section 133 of output waveguide; The idle end 134 of output waveguide; Feedback waveguide 14; The extension 141 of feedback waveguide; The reflecting segment 142 of feedback waveguide; The coupled section 143 of feedback waveguide; The idle end 144 of feedback waveguide; Single mode Distributed Feedback Laser 2; Bragg grating 3; Electrode 4.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment the utility model is done further explanation.
Embodiment 1: as shown in Figure 1; The broadband light chaos signal source chip structure based on ring laser of present embodiment; Comprise a ring laser 1, ring laser 1 comprise a waveguide resonant cavity 11 and respectively with one section input waveguide 12 and one section output waveguide 13 of waveguide resonant cavity 11 coupling.Input waveguide 12 according to it with respect to the position of waveguide resonant cavity 11 and the main transmission direction of light; By the people is input section 121, extension 122 and the coupled section 123 that is set at this input waveguide; Input section 121 and extension 122 lay respectively at the both ends of whole input waveguide 12; Coupled section 123 is positioned at the middle part; Input section 121 is injection ports of ring laser 1 exterior light; Input section 121 is positioned at an end of whole input waveguide 12 and is positioned at a side of waveguide resonant cavity 11, and coupled section 123 is used for the optical coupling of transmitting at input waveguide is got in the waveguide resonant cavity 11, so coupled section 123 is positioned at the middle part of whole input waveguide 12 and tangent with waveguide resonant cavity 11 haply; Extension 122 is used for blazing abroad through the light that coupled section 123 gets into waveguide resonant cavity 11 injecting from input section 121 and failing; But when the end face of extension 122 is vertical with light, still have few part parallel light in incident light reflected back input section 121, to go, just easily the light of normal transmission is produced some non-essential interference.Same; Output waveguide 13 according to its with respect to the main transmission direction of the position of waveguide resonant cavity 11 and light also by artificial extension 132, deferent segment 131 and the coupled section 133 of having set this output waveguide; Extension 132 and deferent segment 131 lay respectively at the both ends of whole output waveguide 12; Coupled section 133 is positioned at the middle part; Deferent segment 131 is output ports of ring laser 1 interior lights; Deferent segment 131 is positioned at an end of whole output waveguide 13 and is positioned at a side of waveguide resonant cavity 11, and coupled section 133 is used for the optical coupling in waveguide resonant cavity 11 transmission is got in the output waveguide 13, so this coupled section 133 is positioned at the middle part of whole output waveguide 13 and tangent with waveguide resonant cavity 11 haply; The input section 121 of input waveguide 12 and the deferent segment 131 of output waveguide 13 are positioned at the same side of waveguide resonant cavity 11.Simultaneously; This chip structure also comprises the single mode Distributed Feedback Laser 2 of an input section 121 that is connected input waveguide 12 and the Bragg grating 3 of an extension 132 that is connected output waveguide 13; Single mode Distributed Feedback Laser 2 and Bragg grating 3 lay respectively at the both sides of waveguide resonant cavity 11; The input section 121 of Distributed Feedback Laser 2 and input waveguide 12 has constituted light beam and has gone into passage; 132 of the extensions of Bragg grating 3 and output waveguide 13 have constituted the light feedback path, and input waveguide 12 has constituted the light input channel with waveguide resonant cavity 11, and output waveguide 13 has constituted the light output channel with waveguide resonant cavity 11.
The coupled section 123 of the input waveguide 12 of the foregoing description 1 and coupled section 133 places of output waveguide 13 also are provided with electrode 4; Illustrate among Fig. 1; On single mode Distributed Feedback Laser 2, Bragg grating 3 and waveguide resonant cavity 11, also be provided with electrode in addition; Not shown among Fig. 1; The effect of these electrodes is on electrode, to add different bias currents in order to control with regulate input and output frequency, coupling ratio and the transmission direction of laser and since in the utility model various electrodes the common practise of being looked those skilled in the art is set, so the detailed distribution situation of various electrodes is not described in the present embodiment; Electrode tended to produce known effect according to known mode when but each parts that it will be appreciated by those of ordinary skill in the art that the chip structure of present embodiment were worked.
According to the disclosed structure of the foregoing description 1; We know; If the extension of above-mentioned input waveguide 12 122 its end faces are during perpendicular to waveguide; Light after the reflection tend to input waveguide 12 in the parallel light of normal transmission, the light after the reflection just produces some non-essential interference to the light of normal transmission easily like this, and these interference to be us hope to get rid of.Therefore we can also also form at the extension 122 of above-mentioned input waveguide 12 one with input waveguide 12 idle end 124 in a certain angle; Said idle end 124 in order to the injection light of avoiding input waveguide 12 extension 122 that form with the reverberation that injects parallel light to injecting the interference of light; Idle end 124 is to be 5-10 degree angle with the optimum angular range of the angle of input waveguide 12; Other angle also can, but effect can be poor.
The waveguide resonant cavity 11 of the ring laser 1 of the foregoing description 1 is racetrack, annular, polygon or dish.Input waveguide 12 is ridge waveguides with output waveguide 13; Its effect is to be used for coupled optical power input and output waveguide resonant cavity 11; Input waveguide 12, output waveguide 13 directly are coupled with waveguide resonant cavity 11 edges; The position general tangential, and, regulate the power that injects light and feedback light with this by electrode 4 control coupling ratios.After ring laser powered up, regulating bias current, ring laser is produced with counter clockwise direction was the luminous state of leading of twocouese, and the change of the optical wavelength of output can realize through the bias current that fine setting is added in electrode.
The single mode DBF laser of the foregoing description 1 is by electrode drive, and regulates its output light wavelength thus.
The Bragg grating pair incident light of the foregoing description 1 has the selection reflex, and its reflection wavelength can be regulated through the bias current that change is added on the Bragg grating electrode, is used for providing for ring laser the feedback light of certain frequency.
The work engineering of the foregoing description 1 is roughly following: referring among Fig. 1 shown in the dotted portion; Bias current through fine setting Distributed Feedback Laser 2; Can regulate Distributed Feedback Laser 2 output light wavelengths; Thereby can regulate the frequency difference of the output light of the ring laser 1 that injects light and freely turn round, i.e. off-resonance frequency.The light of Distributed Feedback Laser 2 outputs is injected into input waveguide 12; Most of light counterclockwise is injected in the waveguide resonant cavity 11 of ring laser 1 through coupling again; Simultaneously; The waveguide resonant cavity 11 of ring laser 1 can be in the luminous state of twocouese under the effect of bias current; The promptly clockwise light that transmits with counter clockwise direction; Clockwise light becomes the light of transmission counterclockwise after being coupled into waveguide resonant cavity 11 once more after 3 reflections of Bragg grating when the coupled section 133 of output waveguide 13 is coupled into output waveguide 13; Thereby the counterclockwise light of transmission, the light that injects through Distributed Feedback Laser 2 and interact through the light three who gets into waveguide resonant cavity 11 after 3 reflections of Bragg grating again and to make ring laser 1 be operated in chaos state to form the optical chaos signal; This optical chaos signal is coupled into deferent segment 131 outputs of output waveguide 13 in the coupled section 133 of ring laser 1 through output waveguide 13, and the light that fractions not have to be coupled in the input waveguide 12 then transfers out input waveguide 12 through extension 122.During the chip structure operate as normal of present embodiment, promptly constantly repeat said process.
The power of the injection light of Distributed Feedback Laser 2 and the feedback light of Bragg grating can be regulated through the electrode of coupled section; Under the nonlinear interaction of the laser field that the waveguide resonant cavity 11 of the injection light with certain off-resonance frequency, certain power and feedback light and ring laser 1 produces, make ring laser 1 be operated in chaos state output broadband chaotic signal; And the off-resonance frequency and injection light, feedback light power of light are injected in adjusting, can make the bandwidth maximum of the chaotic signal of ring laser output.
Embodiment 2: owing to the relative end of Bragg grating 3 among the embodiment 1 at the output 131 of output waveguide 13; Feedback light through there being part not to be coupled into waveguide resonant cavity 11 after 3 reflections of Bragg grating can cause certain interference to the optical chaos signal of output waveguide 13 outputs, the optical chaos quality of signals of influence output.Therefore we need separate light feedback path and light output channel, avoid not being coupled into the interference of the feedback light of waveguide resonant cavity 11 to normal output light.
As shown in Figure 2; In order to overcome the deficiency of embodiment 1; Present embodiment improves on the structure of embodiment 1; The main part of changing is in ring laser 1, to have increased by one section to be positioned at waveguide resonant cavity 11 and to have increased by one section feedback waveguide 14 with waveguide resonant cavity 11 couplings with respect to the opposite side of Distributed Feedback Laser 2, and this feedback waveguide 14 is to be set at be positioned at extension 141, the reflecting segment 142 of another end and the coupled section 143 at middle part of feeding back waveguide 14 one ends with respect to the position of waveguide resonant cavity 11 and the main transmission direction of light by the people according to it.Coupled section 143 be used for waveguide resonant cavity 11 clockwise transmission optical coupling get into waveguide resonant cavity 11; Therefore coupled section 143 is tangent with waveguide resonant cavity 11 haply; Reflecting segment 142 is connected with Bragg grating 3 and is used for the light change direction back reflection that is coupled into from waveguide resonant cavity 11 is gone out, and is coupled into the feedback light that waveguide resonant cavity 11 becomes counterclockwise transmission through coupled section 143 once more.
Based on the reason same with embodiment 1; Coupled section 143 places of the coupled section 123 of above-mentioned input waveguide 12, the coupled section 133 of output waveguide 13 and feedback waveguide 14 also are provided with electrode 4; Illustrate among Fig. 2; On single mode Distributed Feedback Laser 2, Bragg grating 3 and waveguide resonant cavity 11, also be provided with electrode in addition; Not shown among Fig. 2; The effect of these electrodes is on electrode, to add different bias currents in order to control with regulate input and output frequency, coupling ratio and the transmission direction of laser and since in the utility model various electrodes the common practise of being looked those skilled in the art is set, so the detailed distribution situation of various electrodes is not described in the present embodiment; Electrode tended to produce known effect according to known mode when but each parts that it will be appreciated by those of ordinary skill in the art that the chip structure of present embodiment were worked.
According to disclosed structure in the foregoing description 2; We know; Based on the reason same with embodiment 1; For the non-essential interference of the light behind the vertical end face reflection of the extension 141 of the extension 132 of the extension 122 that prevents input waveguide 12 in the present embodiment, output waveguide 13, feedback waveguide 14 to the light of normal transmission in each self-waveguide, therefore can form at extension 122,132,141 places one with waveguide idle end 124,134,144 in a certain angle, the angular range of the angle optimum of idle end 124,134,144 and each waveguide is to be 5-10 degree angle; Other angle also can, but effect can be poor.
The waveguide resonant cavity 11 of the ring laser 1 of the foregoing description 2 is racetrack, annular, polygon or dish.Input waveguide 12, output waveguide 13 and feedback waveguide 14 are ridge waveguides; Its effect is to be used for coupled optical power input and output waveguide resonant cavity 11; Input waveguide 12, output waveguide 13 and feedback waveguide 14 directly are coupled with waveguide resonant cavity 11 edges; The position general tangential, and, regulate the power that injects light and feedback light with this by electrode 4 control coupling ratios.After ring laser powers up, regulate bias current and can make ring laser be operated in the above luminous state of twocouese of threshold value, and the change of the optical wavelength of output can realize through the bias current that fine setting is added in electrode.
The foregoing description 2 single mode DBF lasers are by electrode drive, and regulate its output light wavelength thus.
The foregoing description 2Bragg grating pair incident light has the selection reflex, and its reflection wavelength can be regulated through the bias current that change is added on the Bragg grating electrode, is used for providing for ring laser the feedback light of certain frequency.
The work engineering of the foregoing description 2 is roughly following: referring among Fig. 2 shown in the dotted portion; Bias current through fine setting Distributed Feedback Laser 2; Can regulate Distributed Feedback Laser 2 output light wavelengths; Thereby can regulate the frequency difference of the output light of the ring laser 1 that injects light and freely turn round, i.e. off-resonance frequency.The light of Distributed Feedback Laser 2 outputs is injected into input waveguide 12; Most of light counterclockwise is injected in the waveguide resonant cavity 11 of ring laser 1 through coupling again; Simultaneously; The waveguide resonant cavity 11 of ring laser 1 can be in the luminous state of twocouese under the effect of bias current; The promptly clockwise light that transmits with counter clockwise direction; Clockwise light becomes the light of transmission counterclockwise after being coupled into waveguide resonant cavity 11 once more after 3 reflections of Bragg grating when the coupled section 143 of feedback waveguide 14 is coupled into feedback waveguide 14; Thereby the counterclockwise light of transmission, the light that injects through Distributed Feedback Laser 2 and interact through the light three who gets into waveguide resonant cavity 11 after 3 reflections of Bragg grating again and to make ring laser 1 be operated in chaos state to form the optical chaos signal; This optical chaos signal is coupled into deferent segment 131 outputs of output waveguide 13 in the coupled section 133 of ring laser 1 through output waveguide 13, and the light that fractions not have to be coupled in the input waveguide 12 then transfers out input waveguide 12 through extension 122.During the chip structure operate as normal of present embodiment, promptly constantly repeat said process.
The power of the injection light of Distributed Feedback Laser 2 and the feedback light of Bragg grating 3 can be regulated through the coupled section electrode.Under the nonlinear interaction of the laser field that the waveguide resonant cavity 11 of the injection light with certain off-resonance frequency, certain power and feedback light and ring laser 1 produces, make ring laser 1 be operated in chaos state output broadband chaotic signal; And the off-resonance frequency and injection light, feedback light power of light are injected in adjusting, can make the bandwidth maximum of the chaotic signal of ring laser output.After the weak point that has overcome embodiment 1, embodiment 2 can produce the chaotic signal of better quality.
Those of ordinary skill in the art will appreciate that embodiment described here is in order to help the principle of reader understanding's the utility model, should to be understood that the protection range of the utility model is not limited to such special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combinations that do not break away from the utility model essence according to disclosed these teachings of the utility model, and these distortion and combination are still in the protection range of the utility model.
Claims (8)
1. broadband light chaos signal source chip structure based on ring laser; Comprise a ring laser; Said ring laser comprise a waveguide resonant cavity and respectively with one section input waveguide and one section output waveguide of waveguide resonant cavity coupling; The input section of said input waveguide and the deferent segment of output waveguide are positioned at the same side of waveguide resonant cavity; Said input waveguide comprises input section, extension and coupled section, and said output waveguide comprises extension, coupled section and deferent segment, it is characterized in that; Also comprise a single mode Distributed Feedback Laser and a Bragg grating that is connected the output waveguide extension that is connected the input section of input waveguide, said single mode Distributed Feedback Laser and Bragg grating lay respectively at the both sides of waveguide resonant cavity.
2. the broadband light chaos signal source chip structure based on ring laser according to claim 1; It is characterized in that; The extension of said input waveguide also form one with input waveguide idle end in a certain angle, said idle end in order to the injection light of avoiding input waveguide in the light reflection of extension to injecting the interference of light.
3. the broadband light chaos signal source chip structure based on ring laser according to claim 2 is characterized in that said idle end and input waveguide are 5-10 degree angle.
4. the broadband light chaos signal source chip structure based on ring laser according to claim 1 is characterized in that the waveguide resonant cavity of described ring laser is racetrack, annular, polygon or dish.
5. broadband light chaos signal source chip structure based on ring laser; Comprise a ring laser; Said ring laser comprise a waveguide resonant cavity and respectively with one section input waveguide and one section output waveguide of waveguide resonant cavity coupling; The input section of said input waveguide and the deferent segment of output waveguide are positioned at the same side of waveguide resonant cavity; Said input waveguide comprises input section, extension and coupled section, and said output waveguide comprises extension, coupled section and deferent segment, it is characterized in that; Said ring laser also comprises one section feedback waveguide that is positioned at the waveguide resonant cavity opposite side and is coupled with waveguide resonant cavity, and said feedback waveguide comprises extension, reflecting segment and coupled section; Said chip structure also comprises the single mode Distributed Feedback Laser and the Bragg grating that is connected feedback waveguide reflecting segment that are connected input waveguide input section, and said single mode Distributed Feedback Laser and Bragg grating lay respectively at the both sides of waveguide resonant cavity.
6. the broadband light chaos signal source chip structure based on ring laser according to claim 5; It is characterized in that; The extension of the extension of said input waveguide, the extension of output waveguide and feedback waveguide also form one with self idle end in a certain angle, said idle end reflects the interference to normal light in order to avoid light.
7. the broadband light chaos signal source chip structure based on ring laser according to claim 6 is characterized in that said idle end and input waveguide are 5-10 degree angle.
8. the broadband light chaos signal source chip structure based on ring laser according to claim 5 is characterized in that the waveguide resonant cavity of described ring laser is racetrack, annular, polygon or dish.
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| CN2011202386802U CN202217910U (en) | 2011-07-07 | 2011-07-07 | Broadband optical chaos signal source chip structure based on ring laser |
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| CN2011202386802U CN202217910U (en) | 2011-07-07 | 2011-07-07 | Broadband optical chaos signal source chip structure based on ring laser |
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Cited By (3)
| 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 |
| CN103411925A (en) * | 2013-07-12 | 2013-11-27 | 电子科技大学 | Cascade type Mach-Zehnder interference type optical biochemical sensor with arch-shaped ring structure |
| WO2014201964A1 (en) * | 2013-06-18 | 2014-12-24 | 中国科学院苏州纳米技术与纳米仿生研究所 | Ring cavity device and manufacturing method therefor |
-
2011
- 2011-07-07 CN CN2011202386802U patent/CN202217910U/en not_active Expired - Fee Related
Cited By (5)
| 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 |
| WO2014201964A1 (en) * | 2013-06-18 | 2014-12-24 | 中国科学院苏州纳米技术与纳米仿生研究所 | Ring cavity device and manufacturing method therefor |
| CN103411925A (en) * | 2013-07-12 | 2013-11-27 | 电子科技大学 | Cascade type Mach-Zehnder interference type optical biochemical sensor with arch-shaped ring structure |
| CN103411925B (en) * | 2013-07-12 | 2015-07-15 | 电子科技大学 | Cascade type Mach-Zehnder interference type optical biochemical sensor with arch-shaped ring structure |
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