CN111856836A - Orthogonal mode optical parametric amplification method and device - Google Patents
Orthogonal mode optical parametric amplification method and device Download PDFInfo
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- CN111856836A CN111856836A CN202010993599.9A CN202010993599A CN111856836A CN 111856836 A CN111856836 A CN 111856836A CN 202010993599 A CN202010993599 A CN 202010993599A CN 111856836 A CN111856836 A CN 111856836A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 39
- 230000003321 amplification Effects 0.000 title claims abstract description 32
- 238000003199 nucleic acid amplification method Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000013307 optical fiber Substances 0.000 claims abstract description 21
- 230000010287 polarization Effects 0.000 claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 238000005516 engineering process Methods 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 239000004038 photonic crystal Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
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- 230000010355 oscillation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- 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
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
- G02F1/39—Non-linear optics for parametric generation or amplification of light, infrared or ultraviolet waves
- G02F1/395—Non-linear optics for parametric generation or amplification of light, infrared or ultraviolet waves in optical waveguides
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- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses an orthogonal mode optical parametric amplification method, which comprises the following steps: carrying out signal modulation on the signal light to obtain four kinds of polarization mode signal light; the four polarization mode signal lights enter the few-mode optical fiber through a photon lantern mode division multiplexing technology; performing signal modulation on the pump light to obtain four kinds of polarization mode pump light, and coupling the four kinds of light into the long tapered fiber; the pump light after coupling output is coupled with the signal light after few-mode optical fiber output to enter an amplifier through phase matching; and outputting the obtained amplified light through MIMO equalization. The invention also discloses an orthogonal mode optical parametric amplification device. The invention can simultaneously amplify the optical parameters of the light in four modes, effectively improve the carrier number and efficiency of the optical parameter amplification and reduce the cost; the channel capacity in the optical fiber is improved; the influence of intermodal dispersion on optical parametric amplification is reduced; the pumping efficiency is greatly improved by using the phase-matched pumping light.
Description
Technical Field
The present invention relates to optical parametric amplification technologies, and in particular, to an orthogonal mode optical parametric amplification method and apparatus.
Background
With the popularization of optical fiber communication services, the rapid development of emerging IT services such as big data, 5G, cloud computing, mobile internet and the like causes the demand of people for network capacity to rapidly increase, and the network capacity becomes a resource in short supply again. With the increasing demand of optical network bandwidth, the capacity supply of single-mode single-channel optical fiber is difficult to meet the increase rate of backbone network capacity, and multiplexing technologies such as optical time division multiplexing, wavelength division multiplexing, dense wavelength division multiplexing, space division multiplexing, polarization multiplexing and the like are continuously proposed and applied to the capacity expansion of optical communication systems. The current optical transmission system approaches the limit of bandwidth under these multiplexing techniques, and the multiplexing technique using the orthogonal mode as an independent channel, in addition to multiplexing elements such as time slot and wavelength, becomes a new growth point for expanding the transmission capacity. The mode multiplexing technology in space division multiplexing is used as a search direction for expanding communication capacity, is applied to a next generation ultra-high-speed, large-capacity, long-distance and non-blocking backbone transmission network, and is helpful for overcoming the bottleneck of insufficient communication capacity.
The optical parametric amplification is a nonlinear laser frequency conversion technology for amplifying signal light intensity by utilizing a nonlinear crystal, and can realize broadband tunable output of laser in a larger waveband range, so that the output wavelength range of the conventional solid laser is effectively widened, and an optical parametric amplification and oscillation device based on three-wave nonlinear combination is widely concerned by more and more laser researchers.
Disclosure of Invention
The purpose of the invention is as follows: in view of the above problems, it is an object of the present invention to provide an orthogonal mode optical parametric amplification method for achieving dispersion-free transmission between signal lights of different modes, and another object of the present invention is to provide an orthogonal mode optical parametric amplification device.
The technical scheme is as follows: the invention relates to an orthogonal mode optical parametric amplification method, which comprises the following steps:
s1: carrying out signal modulation on the signal light to obtain four kinds of polarization mode signal light;
s2: enabling the four polarization mode signal lights to enter the few-mode optical fiber through a photon lantern mode division multiplexing technology;
s3: performing signal modulation on the pump light to obtain four kinds of polarization mode pump light, and coupling the four kinds of light into the long tapered fiber;
s4: the pump light after coupling output in the S3 is coupled with the signal light after being output by the S2 few-mode optical fiber through phase matching and enters an amplifier, and the pump light continuously pumps the signal light to realize optical parametric amplification;
s5: passing the amplified light obtained at S4
And (4) MIMO balanced output.
The modes of the four polarization mode signal lights in step S1 are LP01、LP11、LP21、LP02。
The operating wavelength of the few-mode fiber in the step S2 includes a signal light emitting band.
The step S3 polarization mode pump light has the same mode as the step S1 polarization mode signal light.
The amplifier of step S4 includes a photonic crystal fiber.
An orthogonal mode optical parametric amplification device comprises a signal light source, a photon lantern, a few-mode optical fiber, a pump light source, a phase matcher, a coupler, an amplifier and an MIMO equalizer, wherein the signal light source generates signal light, the signal light is input into the photon lantern after being modulated by signals, and the output signal light is input into the few-mode optical fiber; the pump light source generates pump light, the pump light is input into the long tapered fiber after signal modulation, output light is incident to the phase matcher, the pump light after phase matching and signal light output from the few-mode fiber are incident to the amplifier through the coupler, optical parameter amplified light is obtained, and finally the optical parameter amplified light is output through the MIMO equalizer.
The beneficial effects are that: compared with the prior art, the invention has the following remarkable advantages:
1. the invention can simultaneously amplify the optical parameters of the light in four modes, effectively improve the carrier number and efficiency of the optical parameter amplification and reduce the cost;
2. by utilizing the mode division multiplexing technology of the photon lantern, the channel capacity in the optical fiber is improved;
3. under the orthogonal mode, the intermodal dispersion among the light in different modes tends to zero, so that the influence of the intermodal dispersion on the parametric amplification is reduced;
4. the pumping efficiency is greatly improved by using the phase-matched pumping light.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention.
Detailed Description
The orthogonal mode optical parametric amplification method described in this embodiment includes the following steps:
s1: signal modulation is carried out on the signal light to obtain four kinds of polarization mode signal light, respectively LP 0114、LP 1115、LP 2116、LP 0217；
S2: the method comprises the following steps that four polarization mode signal lights enter a few-mode optical fiber 10 through a photon lantern 9 mode division multiplexing technology, wherein the working wavelength of the few-mode optical fiber 9 comprises a signal light emitting waveband;
s3: performing signal modulation on the pump light to obtain four kinds of pump light with polarization modes, respectively LP 012、LP 113、LP 214、LP 025, coupling the four light into a long tapered optical fiber 6;
s4: the pump light coupled and output in the S3 is coupled with the signal light output by the S2 few-mode fiber 10 through phase matching and enters the photonic crystal fiber, and the pump light continuously pumps the signal light to realize optical parametric amplification;
s5: passing the amplified light obtained at S4
And MIMO is output in a balanced manner, so that optical parametric amplification of multiple channels of carriers in different polarization modes is realized.
As shown in the schematic diagram of the apparatus shown in fig. 1, an orthogonal mode optical parametric amplification apparatus includes a signal light source 8, a photon lantern 9, a few-mode optical fiber 10, a pump light source 1, a phase matcher 7, a coupler 11, a photonic crystal optical fiber 12, and a MIMO equalizer 13, where the signal light source 8 generates signal light, the signal light is modulated by a signal and then input to the photon lantern 9, and the output signal light is input to the few-mode optical fiber 10; the pump light source 1 generates pump light, and the pump light generates LP after being modulated by signals 012、LP 113、LP 214、LP025-mode light is input into a long tapered fiber 6, output light enters a phase matcher 7, pump light after phase matching and signal light output from a few-mode fiber 10 enter a photonic crystal fiber 12 through a coupler 11 to obtain optical parametric amplification light, and finally the optical parametric amplification light passes through
The MIMO equalizer 13 outputs.
Claims (6)
1. An orthogonal mode optical parametric amplification method, comprising the steps of:
s1: carrying out signal modulation on the signal light to obtain four kinds of polarization mode signal light;
s2: the four polarization mode signal lights enter a few-mode optical fiber (10) through a photon lantern (9) mode division multiplexing technology;
s3: performing signal modulation on the pump light to obtain four kinds of polarization mode pump light, and coupling the four kinds of light into a long tapered fiber (6);
s4: the pump light after being coupled and output in the S3 is coupled with the signal light after being output by the S2 few-mode optical fiber (10) through phase matching and enters an amplifier, and the pump light continuously pumps the signal light to realize optical parametric amplification; s5: passing the amplified light obtained at S4
And (4) MIMO balanced output.
2. The quadrature-mode optical parametric amplification method of claim 1, wherein the four polarization-mode signal lights in step S1 have respective modes LP01（14）、LP11（15）、LP21（16）、LP02（17）。
3. The quadrature mode optical parametric amplification method of claim 1, wherein the operating wavelength of the few-mode optical fiber (10) of step S2 includes a signal light emission band.
4. The orthogonal mode optical parametric amplification method of claim 1, wherein the step S3 polarization mode pump light has the same mode as the step S1 polarization mode signal light.
5. The quadrature mode optical parametric amplification method of claim 1, wherein the amplifier of step S4 comprises a photonic crystal fiber (12).
6. An orthogonal mode optical parametric amplification device is characterized by comprising a signal light source (8), a photon lantern (9), a few-mode optical fiber (10), a pump light source (1), a phase matcher (7), a coupler (11), an amplifier and a MIMO equalizer (13), wherein the signal light source (8) generates signal light, the signal light is input into the photon lantern (9) after being modulated by signals, and the output signal light is input into the few-mode optical fiber (10); the pump light source (1) generates pump light, the pump light is input into the long tapered fiber (6) after being modulated by signals, output light enters the phase matcher (7), the pump light after being subjected to phase matching and signal light output from the few-mode fiber (10) enter the amplifier through the coupler (11), optical parametric amplification light is obtained, and finally the optical parametric amplification light is output through the MIMO equalizer (13).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089580A (en) * | 2021-11-12 | 2022-02-25 | 南京信息工程大学 | Novel few-mode loop wavelength conversion device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595842A (en) * | 2004-06-17 | 2005-03-16 | 上海交通大学 | Broadband optical fiber parameter amplifier |
| CN103117812A (en) * | 2013-01-24 | 2013-05-22 | 华中科技大学 | Regenerator suitable for wavelength division multiplex-differential phase shift keying (WDM-DPSK) optical signals |
| CN205210488U (en) * | 2015-12-02 | 2016-05-04 | 北京邮电大学 | Optic fibre parametric amplification device |
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2020
- 2020-09-21 CN CN202010993599.9A patent/CN111856836A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595842A (en) * | 2004-06-17 | 2005-03-16 | 上海交通大学 | Broadband optical fiber parameter amplifier |
| CN103117812A (en) * | 2013-01-24 | 2013-05-22 | 华中科技大学 | Regenerator suitable for wavelength division multiplex-differential phase shift keying (WDM-DPSK) optical signals |
| CN205210488U (en) * | 2015-12-02 | 2016-05-04 | 北京邮电大学 | Optic fibre parametric amplification device |
Non-Patent Citations (3)
| Title |
|---|
| JUNPENG LIANG等: "Design and fabrication of elliptical-core few-mode fiber for MIMO-less data transmission", 《OPTICS LETTERS》 * |
| K.K.Y.WONG: "Polarization-interleaved WDM signals in a fiber optical parametric amplifier with orthogonal pumps", 《OPTICS EXPRESS》 * |
| 万峰: "相干通信体制下的全光再生技术研究", 《中国博士学位论文全文数据库-信息科技辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089580A (en) * | 2021-11-12 | 2022-02-25 | 南京信息工程大学 | Novel few-mode loop wavelength conversion device |
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