CN105739135A - Magneto-optic isolator prepared from metamaterial with low dielectric constant - Google Patents

Magneto-optic isolator prepared from metamaterial with low dielectric constant Download PDF

Info

Publication number
CN105739135A
CN105739135A CN201610179774.4A CN201610179774A CN105739135A CN 105739135 A CN105739135 A CN 105739135A CN 201610179774 A CN201610179774 A CN 201610179774A CN 105739135 A CN105739135 A CN 105739135A
Authority
CN
China
Prior art keywords
magneto
thickness
meta materials
optic isolator
low
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.)
Granted
Application number
CN201610179774.4A
Other languages
Chinese (zh)
Other versions
CN105739135B (en
Inventor
陈将伟
宦杰
杨晓霞
陶志阔
谢国治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANJING YUANQIANG MICROWAVE TECHNOLOGY Co.,Ltd.
Original Assignee
Nanjing Post and Telecommunication University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Post and Telecommunication University filed Critical Nanjing Post and Telecommunication University
Priority to CN201610179774.4A priority Critical patent/CN105739135B/en
Publication of CN105739135A publication Critical patent/CN105739135A/en
Application granted granted Critical
Publication of CN105739135B publication Critical patent/CN105739135B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • G02F1/01—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 for the control of the intensity, phase, polarisation or colour 
    • G02F1/09—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 for the control of the intensity, phase, polarisation or colour  based on magneto-optical elements, e.g. exhibiting Faraday effect
    • G02F1/093—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 for the control of the intensity, phase, polarisation or colour  based on magneto-optical elements, e.g. exhibiting Faraday effect used as non-reciprocal devices, e.g. optical isolators, circulators
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/002—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials
    • G02B1/005—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials made of photonic crystals or photonic band gap materials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)

Abstract

The invention discloses a magneto-optic isolator prepared from a metamaterial with a low dielectric constant.The structural formula of the magneto-optic isolator is G2G1G2G1MG1G2G1G2G1G2G1G2G1, and the magneto-optic isolator is one-dimensional single-defect magneto-optic photonic crystals, wherein G1 is di-titanium pentoxide with the thickness of 0.1210 micrometer, G2 is the metamaterial with the low dielectric constant and with the thickness of 0.3454 micrometer, and M is bismuth-yttrium-iron-doped garnet with the thickness of 4.3462 micrometers.According to the magneto-optic isolator, it is aimed that the kerr rotation angle is close to 45 degrees at the central wavelength near 1.053 micrometers, and the energy reflectivity is larger than 98%; in addition, the magneto-optic isolator has the advantages that the thickness is small (7.2657 micrometers), and the number of layers is small.

Description

Utilize magneto optic isolator prepared by low-k Meta Materials
Technical field
The present invention relates to photoelectron technical field, be specifically related to a kind of utilize low-k Meta Materials to prepare one-dimensional single defect magneto-opto photonic crystal, with realize reflection type optical isolation.
Background technology
Optoisolator is a kind of the nonreciprocal passive device allowing forward transmission light to pass through, and its Main Function is to prevent reverse transfer light from light source being had undesirable effect, and improves the stability of light path system transmission.
Existing reflection type optical isolator is by a pair polariser that optical axis direction is 45° angle, and is placed in the kerr rotation device composition between two polarisers.
Developing rapidly of Modern optical communication technology requires the device miniaturization for light path, in order to integrated.And existing block optoisolator is due to the restriction of magneto-optical crystal volume, it is impossible to meet the requirement that light path is integrated.
(the research of reflection-type magneto-optic multi-layers isolator job stability such as Wen Xiaowen, Acta Physica Sinica 2005,54:1847) propose a kind of one-dimensional magneto-optic multi-layer film structure that can realize reflection-type magneto optic isolator for the optical communications wavelength of 1.053 microns, its total rete number is 19 layers, total thicknesses of layers is 7.6779 μm, when vertical incidence, central wavelength kerr rotation angle is up to 44.6131 °, reflectance is 97.411%, embody the advantage of miniaturized device, improve the performance of reflection-type magneto optic isolator simultaneously.
In recent years, dielectric constant is relatively low, even level off to the artificial electromagnetic Meta Materials (Metamaterials) of zero (Epsilon-near-zero (ENZ)) to have become as the research contents of hot topic.Polytype material, such as noble metal, doped semiconductor, polar dielectric, transparent conductor pottery etc., be used to prepare dielectric constant level off to zero Meta Materials.Meanwhile, gain-type Meta Materials is also day by day noticeable.
Summary of the invention
The deficiency that it is an object of the invention to overcome existing correlation technique is (as more in the thin film number of plies, gross thickness is thicker), performance is good, thickness is thinner, the less one-dimensional single defect magneto-opto photonic crystal isolator of the number of plies to provide one, the requirement integrated to meet light path.
The magneto optic isolator utilizing low-k Meta Materials to prepare provided by the invention, adopts the following structural formula of one-dimensional single defect magneto-opto photonic crystal structure: G2G1G2G1MG1G2G1G2G1G2G1G2G1, and wherein, G1 is five oxidation two titaniums；G2 is low-k Meta Materials；M is Bismuth-doped yttrium iron garnets.
In technique scheme, further additional technical feature is in that:
Described structure adopts low-k Meta Materials.
The center operating wavelength of described structure is 1.053 microns.
At described center operating wavelength under 1.053 microns, the dielectric constant of five oxidations two titaniums (G1) is 4.73；The dielectric constant of low-k Meta Materials (G2) is 0.581；ε in Bismuth-doped yttrium iron garnets (M) dielectric tensorsxx=εyy=5.87, εxy=-εyx=0.00283, εzz≈εxx, other matrix elements are zero.
In described structure, the thickness of G1 and G2 is 1/4 optical wavelength, and the thickness of M is 10 times of optical wavelengths.
Described structure is when light is vertically injected, and the kerr rotation angle of central wavelength reaches 44.97923 °, and reflectance is up to 98.91675%.
Beneficial effect
Realize the technical scheme of the magneto optic isolator utilizing low-k Meta Materials to prepare that foregoing invention provides, it is utilize low-k Meta Materials to build 1-D photon crystal structure, and introduce magneto-optical crystal defect, it is achieved close to kerr rotation angle and the high reflectance of 45 °.Compared with prior art, owing to having selected low-k Meta Materials material, it is simple to optimize design, obtain the magneto optic isolator of thinner thickness, optically isolated excellent performance.
The magneto optic isolator utilizing low-k Meta Materials to prepare provided by the present invention, with existing realize optically isolated device in central wavelength compared with, gross thickness is relatively thin, is 7.2657 microns, facilitates light path integrated, and performance is less by the impact of thicknesses of layers change.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the magneto optic isolator structure that the present invention utilizes low-k Meta Materials to prepare.
When Fig. 2 is light vertical incidence, invention utilize the kerr rotation angle of magneto optic isolator prepared by the low-k Meta Materials spectral response figure near centre wavelength.
When Fig. 3 is light vertical incidence, invention utilize the reflectance of magneto optic isolator prepared by the low-k Meta Materials spectral response figure near centre wavelength.
Detailed description of the invention
The technical scheme of the magneto optic isolator utilizing low-k Meta Materials to prepare provided by the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
Low-k Meta Materials G2 selects Ag/Ge/Ag/Ge/Ag/Ge multilayer film, and wherein silver thickness is 20 nanometers, and germanium layer thickness is 95 nanometers.
Prepared by employing radio frequency magnetron sputtering method: configuration five oxidation two titaniums, Bismuth-doped yttrium iron garnets, silver and germanium target, sputtering process is set by the structural design shown in Fig. 1, layer by layer deposition in monocrystalline Sal substrate, dissolves Sal substrate with distilled water after film forming, can obtain required diaphragm.
The present invention utilizes magneto optic isolator prepared by low-k Meta Materials, when light vertical incidence, kerr rotation angle that numerical simulation obtains and energy reflectivity near centre wavelength spectral response figure as shown in Figures 2 and 3, visible, the kerr rotation angle of central wavelength reaches 44.97923 °, and reflectance is up to 98.91675%.

Claims (5)

1. utilize magneto optic isolator prepared by low-k Meta Materials, it is characterised in that: adopting the structural formula of one-dimensional single defect magneto-opto photonic crystal structure: G2G1G2G1MG1G2G1G2G1G2G1G2G1, wherein, G1 is five oxidation two titaniums of thickness 0.1210 micron；G2 is the low-k Meta Materials of thickness 0.3454 micron；M is the Bismuth-doped yttrium iron garnets of thickness 4.3462 microns.
2. the magneto optic isolator utilizing low-k Meta Materials to prepare according to claim 1, it is characterised in that: the centre wavelength of described structure application is 1.053 microns.
3. the magneto optic isolator utilizing low-k Meta Materials to prepare according to claim 1 and 2, it is characterised in that: described center operating wavelength 1.053 microns place, the dielectric constant of G1 is 4.73；The dielectric constant of G2 is 0.581；ε in M dielectric tensorsxx=εyy=5.87, εxy=-εyx=0.00283, εzz≈εxx, other matrix elements are zero.
4. according to claim 1 or 3, utilize magneto optic isolator prepared by low-k Meta Materials, it is characterised in that: the thickness of G1 and G2 is 1/4 optical wavelength, and the thickness of M is 10 times of optical wavelengths.
5. according to claim 1 or 4, utilize magneto optic isolator prepared by low-k Meta Materials, it is characterised in that: when light vertically injects described isolator, the kerr rotation angle of central wavelength reaches 44.97923 °, and energy reflectivity reaches 98.91675%.
CN201610179774.4A 2016-03-25 2016-03-25 The magneto optic isolator prepared using low-k Meta Materials Active CN105739135B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610179774.4A CN105739135B (en) 2016-03-25 2016-03-25 The magneto optic isolator prepared using low-k Meta Materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610179774.4A CN105739135B (en) 2016-03-25 2016-03-25 The magneto optic isolator prepared using low-k Meta Materials

Publications (2)

Publication Number Publication Date
CN105739135A true CN105739135A (en) 2016-07-06
CN105739135B CN105739135B (en) 2018-04-10

Family

ID=56252050

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610179774.4A Active CN105739135B (en) 2016-03-25 2016-03-25 The magneto optic isolator prepared using low-k Meta Materials

Country Status (1)

Country Link
CN (1) CN105739135B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106299674A (en) * 2016-08-17 2017-01-04 大连理工大学 A kind of frequency-selective surfaces antenna house bandwidth compensation method
CN106444214A (en) * 2016-10-19 2017-02-22 湖北第二师范学院 Kerr defect-containing cosine function type photonic crystal low-threshold optical bistable device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104483764A (en) * 2014-11-11 2015-04-01 江苏大学 Defective magneto photon crystal with non-reciprocity feature and purpose
CN105093571A (en) * 2015-07-31 2015-11-25 南京邮电大学 Large-incident-angle magnetic photonic crystal broadband photoisolator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104483764A (en) * 2014-11-11 2015-04-01 江苏大学 Defective magneto photon crystal with non-reciprocity feature and purpose
CN105093571A (en) * 2015-07-31 2015-11-25 南京邮电大学 Large-incident-angle magnetic photonic crystal broadband photoisolator

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
LING TANG ET AL: "Characterization for defect modes of one-dimensional photonic crystals containing metamaterials", 《CHINESE OPTICS LETTERS 》 *
YUANJIANG XIANG ET AL: "Properties of omnidirectional gap and defect mode of one-dimensional photonic crystal containing indefinite metamaterials with a hyperbolic dispersion", 《JOURNAL OF APPLIED PHYSICS》 *
ZHANG LI-WEI ET AL: "Transmission Properties of One-Dimensional Photonic Crystals Containing Anisotropic Metamaterials", 《CHIN. PHYS. LETT》 *
朱宇光 ET AL: "极限值电磁参数材料及其在一维光子晶体结构中的应用研究", 《常州工学院学报》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106299674A (en) * 2016-08-17 2017-01-04 大连理工大学 A kind of frequency-selective surfaces antenna house bandwidth compensation method
CN106299674B (en) * 2016-08-17 2019-01-18 大连理工大学 A kind of frequency-selective surfaces antenna house bandwidth compensation method
CN106444214A (en) * 2016-10-19 2017-02-22 湖北第二师范学院 Kerr defect-containing cosine function type photonic crystal low-threshold optical bistable device

Also Published As

Publication number Publication date
CN105739135B (en) 2018-04-10

Similar Documents

Publication Publication Date Title
Ren et al. Thermally switching between perfect absorber and asymmetric transmission in vanadium dioxide-assisted metamaterials
Onbasli et al. Optical and magneto-optical behavior of Cerium Yttrium Iron Garnet thin films at wavelengths of 200–1770 nm
US7050231B2 (en) Faraday rotator with metal reflection film
CN106054287B (en) A kind of the optic structure unit and optical device of visible light wave range transformation
Srinivasan et al. Review of integrated magneto-optical isolators with rare-earth iron garnets for polarization diverse and magnet-free isolation in silicon photonics
KR20040018190A (en) Display panel and multilayer plates for production of this display panel
CN103123421B (en) One-dimensional magnetic photonic crystal for achieving broadband optical isolation
Tuz Gyrotropic-nihility state in a composite ferrite-semiconductor structure
Goto et al. A nonreciprocal racetrack resonator based on vacuum-annealed magnetooptical cerium-substituted yttrium iron garnet
CN101681069B (en) Transparent electrode
CN105739135A (en) Magneto-optic isolator prepared from metamaterial with low dielectric constant
Guo et al. Tunable broadband, wide angle and lithography-free absorber in the near-infrared using an ultrathin VO2 film
CN105093571A (en) Large-incident-angle magnetic photonic crystal broadband photoisolator
CN103472598B (en) A kind of one-dimensional magnetic photonic crystal realizing light isolation
CN114153101A (en) Circular polarization selective ultrafast all-optical switch based on zero-refractive-index material super surface
Li et al. Tunable Tamm plasmon polaritons and perfect absorption in a metal-PC cavity
JP6338404B2 (en) Waveguide type magneto-optical device and manufacturing method thereof
Kazemi et al. Ultrafast tunable integrated Faraday isolator based on optical pumping in a graphene–InSb–graphene structure
US6785037B2 (en) Faraday rotator
US6590694B2 (en) Faraday rotator
Dzibrou et al. Fitting transmission and Faraday rotation spectra of [Bi3Fe5O12/Sm3Ga5O12] m magneto-optical photonic crystals
Hu et al. Photo-induced high modulation depth terahertz modulator based on VOx–Si–VOx hybrid structure
CN115799356A (en) Light absorber for enhancing optical absorption of molybdenum disulfide and preparation method thereof
JP2005526262A (en) Multilayer optical coating
JPH06273621A (en) Polarizer and its production

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20200426

Address after: Room 102, 202, 302, building 10, building 18, No.15 Fengji Avenue, Yuhuatai District, Nanjing City, Jiangsu Province

Patentee after: NANJING YUANQIANG MICROWAVE TECHNOLOGY Co.,Ltd.

Address before: Yuen Road Qixia District of Nanjing City, Jiangsu Province, No. 9 210046

Patentee before: NANJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS