CN105629624A - All-optical logic gate based on FBG (Fiber Brag Grating) CPM (Cross Phase Modulation) - Google Patents
All-optical logic gate based on FBG (Fiber Brag Grating) CPM (Cross Phase Modulation) Download PDFInfo
- Publication number
- CN105629624A CN105629624A CN201610031912.4A CN201610031912A CN105629624A CN 105629624 A CN105629624 A CN 105629624A CN 201610031912 A CN201610031912 A CN 201610031912A CN 105629624 A CN105629624 A CN 105629624A
- Authority
- CN
- China
- Prior art keywords
- port
- optical
- optoisolator
- band filter
- division multiplexer
- 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
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F3/00—Optical logic elements; Optical bistable devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses an all-optical logic gate based on FBG (Fiber Brag Grating) CPM (Cross Phase Modulation). The all-optical logic gate comprises a first optical pumping signal source and the like, wherein the first optical pumping signal source is connected with a first optical isolator through a first band-pass filter; a weakly continuous signal source is connected with a second optical isolator through a second band-pass filter; a second optical pumping signal source is connected with a third optical isolator through a third band-pass filter; second ports of the first optical isolator, the second optical isolator and the third optical isolator are connected with a wavelength division multiplexer; the wavelength division multiplexer, a circulator, a phase-shifting grating, a second wavelength division multiplexer, a fourth band-pass filter and a fourth optical isolator are sequentially connected; a transmission signal is output from a second port of the fourth optical isolator, a reflecting signal is output from a third port of the circulator, and strong pumping light is output from a third port of the second wavelength division multiplexer. According to the all-optical logic gate based on non-linear phase-shifting FBG CPM, disclosed by the invention, basic conditions are provided for optical switching, optical computation and optical transmission in an all-optical network in the future.
Description
Technical field
The invention belongs to optical information technology field, be specifically related to a kind of all-optical logic gate based on fiber grating Cross-phase Modulation.
Background technology
Deliver substantial amounts of high speed information in optical-fiber network, the Main Function of photoswitch is exactly the selection absorption and packet switch that these information are carried out. Proposition along with a new generation technology light networking concepts, photoswitch and all-optical logic gate have extensively been used in the association areas such as optical information processing, optical computer, optic communication and high-speed photography, production of film and TV, all-optical data process, and become the key technology of following light networking, in optical-fiber network, it also has the effect that can not be substituted simultaneously. At present fiber grating having done in the industry substantial amounts of research, its constitutive logic door is one of hot issue, present applicant proposes a kind of new method structure all-optical logic gate, and namely the present invention adopts fiber grating Cross-phase Modulation to realize all-optical logic door operation.
Summary of the invention
Based on above-mentioned present situation, the invention discloses a kind of all-optical logic gate based on fiber grating Cross-phase Modulation, it utilizes two pump lights of information of carrying, by the cross-phase modulation effect in fiber grating, control the transmission port of grating and the output of reflector port weak signal, thus realizing different logic functions.
For reaching above-mentioned purpose, the present invention takes techniques below scheme:
All-optical logic gate based on fiber grating Cross-phase Modulation, including the first optical pump signal source (1-1), first band filter (1-2), first optoisolator (1-3), weakly continuous signal source (2-1), second band filter (2-2), second optoisolator (2-3), second optical pump signal source (3-1), 3rd band filter (3-2), 3rd optoisolator (3-3), first wave division multiplexer (4), first annular device (5), first nonlinear phase shift grating (6), second wavelength division multiplexer (7), 4th band filter (8), 4th optoisolator (9), first optical pump signal source (1-1) is connected with the first port of the first band filter (1-2), and the second port of the first band filter (1-2) and first port of the first optoisolator (1-3) connect, weakly continuous signal source (2-1) is connected with the first port of the second band filter (2-2), and the second port of the second band filter (2-2) and the first port of the second optoisolator (2-3) connect, second optical pump signal source (3-1) is connected with the first port of the 3rd band filter (3-2), second port of the 3rd band filter (3-2) and the first port of the 3rd optoisolator (3-3) connect, second port of the first optoisolator (1-3) is connected with the first port of wavelength division multiplexer (4), second port of the second optoisolator (2-3) is connected with the second port of wavelength division multiplexer (4), second port of the 3rd optoisolator (3-3) is connected with the 3rd port of wavelength division multiplexer (4), wavelength division multiplexer (4) the 4th port is connected with the first port of circulator (5), second port of circulator (5) is connected with the first port of phase-shifted grating (6), second port of phase-shifted grating (6) and the second wavelength division multiplexer (7) first port are connected, second port of the second wavelength division multiplexer (7) and the first port of the 4th band filter (8) are connected, second port of the 4th band filter (8) and the first port of the 4th optoisolator (9) connect, transmission signal is from the second port output of the 4th optoisolator (9), and reflected signal is from the 3rd port output of circulator (5), and heavy pumping light exports from the 3rd port of the second wavelength division multiplexer (7).
Preferably, the optical fiber that it is material with Er-doped fiber that the first nonlinear phase shift grating (6) is selected.
Preferably, in the first nonlinear phase shift grating (6), the coefficient of coup between forward-wave and retonation wave is 5cm-1��
Preferably, the nonlinear parameter of the first nonlinear phase shift grating (6) is 1.5 �� 10-9w-1/nm��
Preferably, the wavelength in the first optical pump signal source (1-1) and/or the second optical pump signal source (3-1) is 850nm.
Preferably, the weakly continuous optical wavelength of weakly continuous signal source (2-1) is 1550nm.
Phase-shifted fiber grating of the present invention has the wavelength selective power that grating is good, its phase-shift phase can effectively reduce the switch power of optical signal, its switching characteristic will result directly in signal switching in incidence and reflection end, based on the Cross-phase Modulation in Nonlinear Fiber Grating, the first port at the first band filter, first port input pumping light of the 3rd band filter, the first port input weak signal light at the second band filter, through band filter, optoisolator circulator enters phase-shifted fiber grating, a part of weak signal light transmission, another part weak signal luminous reflectance, and then create forward-wave and retonation wave, the output at Transflective end of the soft flashlight is controlled eventually through two combinations restrainting pump light, the logical relation of various combination can be obtained. the switching characteristic of weakly continuous light is controlled by two pump lights, therefore, can the information entrained by pump light be transferred on continuous light by controlling the combination of different pumping light powers.
The present invention provides the foundation condition for light exchange, optical oomputing and optical transport in following all-optical network based on the all-optical logic gate of nonlinear phase shift fiber grating Cross-phase Modulation, optical logic gate is the core devices realizing exchange system, and it is the key factor determining network performance, will have huge application potential in following full light high-speed communicating network and New Generation Optical computer.
Accompanying drawing explanation
Fig. 1 is the present invention all-optical logic gate structural representation based on phase-shifted fiber grating Cross-phase Modulation.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
As shown in Figure 1, the present embodiment is based on the all-optical logic gate of nonlinear phase shift fiber grating Cross-phase Modulation, including the first optical pump signal source 1-1, the first band filter 1-2, the first optoisolator 1-3, weakly continuous signal source 2-1, the second band filter 2-2, the second optoisolator 2-3, the second optical pump signal source 3-1, the 3rd band filter 3-2, the 3rd optoisolator 3-3, first wave division multiplexer 4, first annular device the 5, first nonlinear phase shift grating the 6, second wavelength division multiplexer the 7, the 4th band filter the 8, the 4th optoisolator 9.
The first port a1 of the first optical pump signal source 1-1 and the first band filter 1-2 connects, and the first port b1 of the second port a2 and the first optoisolator 1-3 of the first band filter 1-2 connects.
The first port c1 of weakly continuous signal source 2-1 and the second band filter 2-2 connects, and the first port d1 of the second port c2 and the second optoisolator 2-3 of the second band filter 2-2 connects.
The first port f1 of the second optical pump signal source 3-1 and the three band filter 3-2 connects, and the first port g1 of second port f2 and the three optoisolator 3-3 of the 3rd band filter 3-2 connects.
The second port b2 of the first optoisolator 1-3 is connected with the first port h1 of wavelength division multiplexer 4, the second port d2 of the second optoisolator 2-3 is connected with the second port h2 of wavelength division multiplexer 4, and the second port g2 of the 3rd optoisolator 3-3 is connected with the 3rd port h3 of wavelength division multiplexer 4.
4th port h4 of wavelength division multiplexer 4 is connected with the first port i1 of circulator 5, second port i2 of circulator 5 is connected with the first port j1 of phase-shifted grating 6, second port j2 of phase-shifted grating 6 and the first port k1 of the second wavelength division multiplexer 7 is connected, first port l1 of the second port k2 and the four band filter 8 of the second wavelength division multiplexer 7 is connected, first port m1 of the second port l2 and the four optoisolator 9 of the 4th band filter 8 connects, transmission signal exports from the second port m2 of the 4th optoisolator 9, reflected signal exports from the 3rd port i3 of circulator 5, heavy pumping light exports from the 3rd port k3 of the second wavelength division multiplexer 7.
In the present embodiment, selecting the coefficient of coup between forward-wave and retonation wave is 5cm-1, in order to reduce the input power of pump light, the optical fiber that it is material with Er-doped fiber that phase-shifted fiber grating bonder is selected, its nonlinear parameter is 1.5 �� 10-9w-1/ nm, frequency detuning is 5cm-1, pumping light power 80W, and the wavelength of pump light is 850nm, and the wavelength of weakly continuous light is 1550nm.
The present invention realizes process based on the all-optical logic gate of nonlinear phase shift fiber grating:
1, two pump lights pass through optoisolator, band filter, respectively at entrance A1 input pumping light P1, at entrance A2 place input pumping light P2, and excursion is 0W to 80W, a branch of weakly continuous light arrives Nonlinear Fiber Grating through optical circulator by optoisolator, band filter together by a wavelength division multiplexer and two pump lights simultaneously, after wavelength division multiplexer, pump light is gone out from wavelength division multiplexer transmission, and a part of weak signal light is gone out through band filter, optoisolator transmission. Another part light is reflected away by B port through optical circulator.
2, adjust the combination of entrance A1, A2 input pumping light P1, P2, realize the switch of weak signal at port B, C, it is achieved various logic relation. When phase-shifted fiber grating phase-shift phase is 0, transmission port and reflector port logic AND door and NAND gate. Phase-shifted fiber grating phase-shift phase ��, transmission port and reflector port logic NOR-gate and NAND gate.
When table 1 is 0 for phase-shifted fiber grating phase-shift phase, transmission port and reflector port logic AND door and NAND gate.
Table 1
| A1 | A2 | V12(dB) | V21(dB) | C | B |
| 0 | 0 | -11.13 | 11.13 | 0 | 1 |
| 0 | 1 | -7.341 | 7.341 | 0 | 1 |
| 1 | 0 | -7.341 | 7.341 | 0 | 1 |
| 1 | 1 | 118.4 | -118.4 | 1 | 0 |
| AND-gate | NAND gate |
Table 2 is phase-shifted fiber grating phase-shift phase ��, transmission port and reflector port logic NOR-gate and NAND gate.
Table 2
| A1 | A2 | V12(dB) | V21(dB) | C | B |
| 0 | 0 | 10.3 | -10.3 | 1 | 0 |
| 0 | 1 | -5.535 | 5.535 | 0 | 1 |
| 1 | 0 | -5.535 | 5.535 | 0 | 1 |
| 1 | 1 | -3.581 | 3.581 | 0 | 1 |
| NOR-gate | OR door |
Above the preferred embodiments of the present invention and principle are described in detail, for those of ordinary skill in the art, according to thought provided by the invention, detailed description of the invention will change, and these changes also should be regarded as protection scope of the present invention.
Claims (6)
1. based on the all-optical logic gate of fiber grating Cross-phase Modulation, it is characterized in that including the first optical pump signal source (1-1), first band filter (1-2), first optoisolator (1-3), weakly continuous signal source (2-1), second band filter (2-2), second optoisolator (2-3), second optical pump signal source (3-1), 3rd band filter (3-2), 3rd optoisolator (3-3), first wave division multiplexer (4), first annular device (5), first nonlinear phase shift grating (6), second wavelength division multiplexer (7), 4th band filter (8), 4th optoisolator (9), first optical pump signal source (1-1) is connected with the first port of the first band filter (1-2), and the second port of the first band filter (1-2) and the first port of the first optoisolator (1-3) connect, weakly continuous signal source (2-1) is connected with the first port of the second band filter (2-2), and the second port of the second band filter (2-2) and the first port of the second optoisolator (2-3) connect, second optical pump signal source (3-1) is connected with the first port of the 3rd band filter (3-2), second port of the 3rd band filter (3-2) and the first port of the 3rd optoisolator (3-3) connect, second port of the first optoisolator (1-3) is connected with the first port of wavelength division multiplexer (4), second port of the second optoisolator (2-3) is connected with the second port of wavelength division multiplexer (4), second port of the 3rd optoisolator (3-3) is connected with the 3rd port of wavelength division multiplexer (4), wavelength division multiplexer (4) the 4th port is connected with the first port of circulator (5), second port of circulator (5) is connected with the first port of phase-shifted grating (6), second port of phase-shifted grating (6) and the first port of the second wavelength division multiplexer (7) are connected, second port of the second wavelength division multiplexer (7) and the first port of the 4th band filter (8) are connected, second port of the 4th band filter (8) and the first port of the 4th optoisolator (9) connect, transmission signal exports from the second port of the 4th optoisolator (9), reflected signal exports from the 3rd port of circulator (5), heavy pumping light exports from the 3rd port of the second wavelength division multiplexer (7).
2. as claimed in claim 1 based on the all-optical logic gate of fiber grating Cross-phase Modulation, it is characterized in that: the optical fiber that it is material with Er-doped fiber that the first nonlinear phase shift grating (6) is selected.
3., as claimed in claim 1 based on the all-optical logic gate of fiber grating Cross-phase Modulation, it is characterized in that: in the first nonlinear phase shift grating (6), the coefficient of coup between forward-wave and retonation wave is 5cm-1��
4. based on the all-optical logic gate of fiber grating Cross-phase Modulation as described in any one of claim 1-3, it is characterized in that: the nonlinear parameter of the first nonlinear phase shift grating (6) is 1.5 �� 10-9w-1/nm��
5., as claimed in claim 1 based on the all-optical logic gate of fiber grating Cross-phase Modulation, it is characterized in that: the wavelength in the first optical pump signal source (1-1) and/or the second optical pump signal source (3-1) is 850nm.
6., as claimed in claim 1 based on the all-optical logic gate of fiber grating Cross-phase Modulation, it is characterized in that: the weakly continuous optical wavelength of weakly continuous signal source (2-1) is 1550nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610031912.4A CN105629624A (en) | 2016-01-19 | 2016-01-19 | All-optical logic gate based on FBG (Fiber Brag Grating) CPM (Cross Phase Modulation) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610031912.4A CN105629624A (en) | 2016-01-19 | 2016-01-19 | All-optical logic gate based on FBG (Fiber Brag Grating) CPM (Cross Phase Modulation) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105629624A true CN105629624A (en) | 2016-06-01 |
Family
ID=56044713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610031912.4A Pending CN105629624A (en) | 2016-01-19 | 2016-01-19 | All-optical logic gate based on FBG (Fiber Brag Grating) CPM (Cross Phase Modulation) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105629624A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529569A (en) * | 2013-10-14 | 2014-01-22 | 杭州电子科技大学 | All-optical logic device based on asymmetric coupler cross phase modulation |
| CN104102066A (en) * | 2014-06-26 | 2014-10-15 | 杭州电子科技大学 | Optical fiber coupler dual pump light modulation mode-based all optical logical device |
| CN104391415A (en) * | 2014-11-13 | 2015-03-04 | 杭州电子科技大学 | All-optical flip-flop based on nonlinear phase shift fiber grating |
| CN105137694A (en) * | 2015-10-20 | 2015-12-09 | 杭州电子科技大学 | All-optical logic gate based on non-linear phase shift fiber bragg grating |
-
2016
- 2016-01-19 CN CN201610031912.4A patent/CN105629624A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529569A (en) * | 2013-10-14 | 2014-01-22 | 杭州电子科技大学 | All-optical logic device based on asymmetric coupler cross phase modulation |
| CN104102066A (en) * | 2014-06-26 | 2014-10-15 | 杭州电子科技大学 | Optical fiber coupler dual pump light modulation mode-based all optical logical device |
| CN104391415A (en) * | 2014-11-13 | 2015-03-04 | 杭州电子科技大学 | All-optical flip-flop based on nonlinear phase shift fiber grating |
| CN105137694A (en) * | 2015-10-20 | 2015-12-09 | 杭州电子科技大学 | All-optical logic gate based on non-linear phase shift fiber bragg grating |
Non-Patent Citations (2)
| Title |
|---|
| ZHIGANG ZANG ET AL: "Analysis of optical switching in a Yb3+-doped fiber Bragg grating by using self-phase modulation and cross-phase modulation", 《APPLIED OPTICS》 * |
| 王晓吟: "基于光纤光栅非线性的全光开关和逻辑门研究", 《北京邮电大学硕士学位论文》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gholamnejad et al. | Design and analysis of all-optical 4–2 binary encoder based on photonic crystal | |
| CN103529569B (en) | Based on the all-optical logic device of asymmetric coupler Cross-phase Modulation | |
| CN104007512B (en) | A kind of optical polarization beam splitter | |
| CN105022116A (en) | All-optical diode structure employing two cavities of side edges of photonic crystal waveguide | |
| CN104460174A (en) | Implementation method of all-optical diode based on two-dimensional photonic crystal | |
| CN105137694B (en) | All-optical logic gate based on nonlinear phase shift fiber grating | |
| CN105404075A (en) | Auto-collimation interference effect based two-dimensional photonic crystal logic inverter | |
| CN105629624A (en) | All-optical logic gate based on FBG (Fiber Brag Grating) CPM (Cross Phase Modulation) | |
| CN203982048U (en) | The Sagnac interferometer all-optical logic device of biased amplifier in a kind of ring | |
| CN103634048B (en) | N road light signal adjustable loop slower rays buffer shaper | |
| CN104880768A (en) | Tunable optical power divider | |
| CN104102066B (en) | All-optical logic device based on fiber coupler double pumping action optical modulations | |
| CN103852825A (en) | Optical isolator | |
| CN203838456U (en) | Sagnac loop all-optical logic device based on electro-optical modulation | |
| CN104391418B (en) | Sagnac interferometer all-optical logic device based on erbium-doped fiber coupler | |
| CN206788417U (en) | A kind of photoswitch | |
| CN105676370A (en) | An all-optical packet switching switch based on micro-ring resonant cavities | |
| CN103149633A (en) | Dual-polarization-state signal processing integrated chip | |
| CN103969913A (en) | Erbium-doped optical fiber coupler cross phase modulation all-optical logic device | |
| CN102608705A (en) | Bi-pass mach-zehnder interferometer type polarization-independence top-comb-shaped optical fiber filter | |
| CN104280975A (en) | All-optical XOR gate device based on cascaded semiconductor optical amplifier | |
| CN104166292A (en) | Sagnac interferometer all-optical logic device of loop biased amplifier | |
| CN105259727B (en) | A kind of multi-mode field parameter amplification method | |
| CN203838457U (en) | Cross phase modulation type all-optical logic device for Er-doped optical fiber coupler | |
| CN203519949U (en) | All-optical logic device based on cross phase modulation of asymmetric coupler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160601 |