CN107797311A - Electrooptic modulator - Google Patents
Electrooptic modulator Download PDFInfo
- Publication number
- CN107797311A CN107797311A CN201711122243.2A CN201711122243A CN107797311A CN 107797311 A CN107797311 A CN 107797311A CN 201711122243 A CN201711122243 A CN 201711122243A CN 107797311 A CN107797311 A CN 107797311A
- Authority
- CN
- China
- Prior art keywords
- electrode
- branch
- top surface
- modulator
- substrate
- 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
- 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
- G02F1/03—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/035—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect in an optical waveguide structure
-
- 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
- G02F1/03—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/0305—Constructional arrangements
- G02F1/0316—Electrodes
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Integrated Circuits (AREA)
Abstract
The present invention provides a kind of electrooptic modulator, and it includes the second electrode of a substrate, a Y types fiber waveguide, the first electrode of a pair of strips and a pair of strips.The substrate includes a top surface.This spreads to Y types fiber waveguide from the top surface to the base internal forms, and including two one the first branch for being only used for transmitting H mode and second branch for being only used for transmitting transverse magnetic wave.This is arranged to first electrode on the top surface, includes first modulator electrode and first ground electrode of the first branch both sides that be arranged in parallel respectively.This is arranged to second electrode on the top surface, including second modulator electrode for covering second branch and second ground electrode for being set in parallel in the second branch side.It is modulated in this way, transverse magnetic wave can be involved to transverse electric respectively to first electrode and second electrode by this, loads, transmits information, in the same time, loading, the information content increase of transmission, so as to improve the rate of information throughput.
Description
The application be Application No. 2012105025491, the applying date be that November 30, invention and created name in 2012 are
The divisional application of the patent of " electrooptic modulator ".
Technical field
The present invention relates to high speed light communication system, more particularly to a kind of electrooptic modulator.
Background technology
A kind of existing electrooptic modulator (Mach-Zehnder (Mach-Zehner) electrooptic modulator) utilizes electrooptic effect
Change the refractive index of one of the Liang Ge branches of Y type fiber waveguides by modulated electric fields, so as to change the phase of the light beam transmitted wherein
Position, is allowed to phase difference be present with the light beam transmitted in another branch of Y types fiber waveguide.In this way, in Y type fiber waveguide Liang Ge branches
The light beam of transmission will interfere after converging again, and power output depends on phase difference, that is to say and is determined by modulated electric fields, so as to
Realize modulation.However, with the rapid development of information technology, the rate of information throughput (bandwidth) have become technology development mainly examine
The direction of worry.The rate of information throughput of current electrooptic modulator has much room for improvement.
The content of the invention
In view of this, it is necessary to which a kind of electrooptic modulator for improving the rate of information throughput is provided.
A kind of electrooptic modulator, it includes a substrate, a Y types fiber waveguide, the first electrode of a pair of strips and a pair
The second electrode of strip.The substrate includes a top surface.This spreads to Y types fiber waveguide from the top surface to the base internal forms,
And only used including two one the first branch for being only used for transmitting H mode (transverse electric wave) and one
In the second branch of transmission transverse magnetic wave (transverse magnetic wave).This is arranged to first electrode on the top surface,
First modulator electrode and first ground electrode including the first branch both sides that be arranged in parallel respectively.This is to second electrode
It is arranged on the top surface, including second modulator electrode for covering second branch and one are set in parallel in second branch
Second ground electrode of side.
In this way, can be modulated by this to first electrode to H mode, load, transmit information, can also be right by this
Second electrode is modulated to transverse magnetic wave, is loaded, is transmitted information, that is to say in the same time, and loading, the information content of transmission increase
Add, so as to improve the rate of information throughput.
Brief description of the drawings
Fig. 1 is the schematic perspective view of the electrooptic modulator of better embodiment of the present invention.
Fig. 2 is the diagrammatic cross-section of II-II along Fig. 1 electrooptic modulator.
Main element symbol description
Electrooptic modulator 10
Substrate 110
Top surface 111
Y types fiber waveguide 120
First branch 121
Second branch 122
Incident section 123
It is emitted section 124
Electrode 131,132,141,142
Following embodiment will combine above-mentioned accompanying drawing and further illustrate the present invention.
Embodiment
Fig. 1 and Fig. 2 is referred to, the electrooptic modulator 10 of better embodiment of the present invention, it includes a substrate 110, one
The second electrode 141,142 of individual Y types fiber waveguide 120, the first electrode 131,132 of a pair of strips and a pair of strips.The substrate 110
Including a top surface 111.This is formed to Y types fiber waveguide 120 from the top surface 111 to the diffusion inside of substrate 110, and including two
It is horizontal that one the first branch 121 for being only used for transmitting H mode (transverse electric wave) and one are only used for transmission
Second branch 122 of magnetic wave (transverse magnetic wave).This is arranged at the top surface to first electrode 131,132
On 111, including first modulator electrode 131 of the both sides of the first branch 121 that be arranged in parallel respectively and first ground electrode
132.This is arranged on the top surface 111 to second electrode 141,142, including second modulation for covering second branch 122
Electrode 141 and second ground electrode 142 for being set in parallel in the side of the second branch 122.
In this way, can be modulated by this to 131,132 pairs of H modes of first electrode, load, transmit information, can also lead to
Cross this to be modulated 141,142 pairs of transverse magnetic waves of second electrode, load, transmit information, that is to say in the same time, loading,
The information content increase of transmission, so as to improve the rate of information throughput.
Further, since transverse electric is transmitted respectively in first branch 121 and second branch 122 involves transverse magnetic wave, therefore mutually
Between crosstalk (cross talk) will not also occur.
Due to lithium niobate (LiNbO3) crystal (LN) has higher reaction speed, therefore, the material of the substrate 110 uses
Lithium columbate crystal, to improve the bandwidth of the electrooptic modulator 10.
The Y types fiber waveguide 120 is general also to include an incident section 123 and an outgoing section 124.First branch 121 and
Second branch 122 separates from the incident section 123, and is aggregated into the outgoing section 124 again.The incident section 123 and the outgoing section
124 are formed by spreading Titanium (simple substance) on this substrate, and energy simultaneous transmission transverse electric involves transverse magnetic wave.And first branch
121 also continue to spread admiro after Titanium is spread, therefore can only transmit H mode, and second branch 122 is spreading
Gallium (simple substance) is also spread after Titanium, therefore transverse magnetic wave can only be transmitted.
Using the short transverse of the substrate 110 as x-axis, width is y-axis, first branch 121 and second branch 122
Length direction (i.e. the transmission direction of light) be z-axis, according to the Wave equation analysis of planar light waveguide, it is known that, H mode only has
Electric field component Ey along the y-axis direction, and transverse magnetic wave only has electric field component Ex along the x-axis direction and electric field component along the z-axis direction
Ez.And this is to first electrode 131,132 setting so that its interpolar electric fieldIt is parallel with the overlapping part of first branch 121
In y-axis direction, therefore it can effectively modulate H mode.The setting to second electrode 141,142 so that its interpolar electric field
Therefore overlapping part with second branch 122, can effectively modulate transverse magnetic wave (electric field component Ex) parallel to x-axis direction.
In a word, those skilled in the art are it should be appreciated that the embodiment of the above is intended merely to explanation originally
Invention, and be not used as limitation of the invention, as long as within the spirit of the present invention, to above example institute
The appropriate change and change made all fall within the scope of protection of present invention.
Claims (4)
1. a kind of electrooptic modulator, it includes a substrate, a Y types fiber waveguide, the first electrode of a pair of strips and a pair
The second electrode of shape；The substrate includes a top surface；This spreads to Y types fiber waveguide from the top surface to the base internal forms, and
Including two one the first branch for being only used for transmitting H mode and second branch for being only used for transmitting transverse magnetic wave；This is to
One electrode is arranged on the top surface, including first modulator electrode of the first branch both sides that be arranged in parallel respectively and one
One ground electrode；This is arranged to second electrode on the top surface, including second modulator electrode and one for covering second branch
Individual the second ground electrode for being set in parallel in the second branch side, the Y types fiber waveguide typically also include an incident section and one
It is emitted section；First branch and second branch separate from the incident section, and are aggregated into the outgoing section again, and second branch exists
Also spread gallium after diffusion Titanium and formed.
2. electrooptic modulator as claimed in claim 1, it is characterised in that the material of the substrate uses lithium columbate crystal.
3. electrooptic modulator as claimed in claim 1, it is characterised in that the incident section and the outgoing section pass through on this substrate
Spread Titanium and formed.
4. electrooptic modulator as claimed in claim 1, it is characterised in that first branch also continues to expand after Titanium is spread
Dissipate admiro and formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711122243.2A CN107797311A (en) | 2012-11-30 | 2012-11-30 | Electrooptic modulator |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502549.1A CN103852916B (en) | 2012-11-30 | 2012-11-30 | Electrooptic modulator |
| CN201711122243.2A CN107797311A (en) | 2012-11-30 | 2012-11-30 | Electrooptic modulator |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210502549.1A Division CN103852916B (en) | 2012-11-30 | 2012-11-30 | Electrooptic modulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107797311A true CN107797311A (en) | 2018-03-13 |
Family
ID=50860777
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210502549.1A Expired - Fee Related CN103852916B (en) | 2012-11-30 | 2012-11-30 | Electrooptic modulator |
| CN201711122243.2A Pending CN107797311A (en) | 2012-11-30 | 2012-11-30 | Electrooptic modulator |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210502549.1A Expired - Fee Related CN103852916B (en) | 2012-11-30 | 2012-11-30 | Electrooptic modulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN103852916B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445520B (en) * | 2014-08-20 | 2018-08-24 | 马鞍山万兆科技有限公司 | A kind of all-fiber current transformator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287449A (en) * | 1999-07-02 | 2001-03-14 | 皮雷利·卡维系统有限公司 | Electrooptical modulator with internal impedance match |
| US20020141679A1 (en) * | 2001-03-30 | 2002-10-03 | Masaharu Dol | Optical modulator |
| US20040008916A1 (en) * | 2002-07-12 | 2004-01-15 | Ridgway Richard William | Scheme for controlling polarization in waveguides |
| CN101981492A (en) * | 2008-03-31 | 2011-02-23 | 住友大阪水泥股份有限公司 | Mach-zehnder waveguide type optical modulator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4936644A (en) * | 1989-06-13 | 1990-06-26 | Hoechst Celanese Corp. | Polarization-insensitive interferometric waveguide electrooptic modulator |
| JP3628342B2 (en) * | 1993-09-17 | 2005-03-09 | 富士通株式会社 | Dielectric optical waveguide device |
| JP2000241779A (en) * | 1999-02-24 | 2000-09-08 | Japan Aviation Electronics Industry Ltd | Optical integrated circuit with tunable phase difference |
| WO2009022361A1 (en) * | 2007-08-14 | 2009-02-19 | Selex Sistemi Integrati S.P.A. | Electrically driven optical frequency shifter |
| TW200923454A (en) * | 2007-11-26 | 2009-06-01 | Univ Southern Taiwan | Manufacturing method of optical polarization switch device and its product |
-
2012
- 2012-11-30 CN CN201210502549.1A patent/CN103852916B/en not_active Expired - Fee Related
- 2012-11-30 CN CN201711122243.2A patent/CN107797311A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287449A (en) * | 1999-07-02 | 2001-03-14 | 皮雷利·卡维系统有限公司 | Electrooptical modulator with internal impedance match |
| US20020141679A1 (en) * | 2001-03-30 | 2002-10-03 | Masaharu Dol | Optical modulator |
| US20040008916A1 (en) * | 2002-07-12 | 2004-01-15 | Ridgway Richard William | Scheme for controlling polarization in waveguides |
| CN101981492A (en) * | 2008-03-31 | 2011-02-23 | 住友大阪水泥股份有限公司 | Mach-zehnder waveguide type optical modulator |
Non-Patent Citations (2)
| Title |
|---|
| CHIA-HSING KANG等: "Design and Fabrication of Lithium Niobate TE-TM Mode Splitter", 《THE 16TH OPTO-ELECTRONICS AND COMMUNICATIONS CONFERENCE》 * |
| WEN-HUNG HUANG等: "Gallium In-Diffusion for the Fabrication of Lithium Niobate Optical Waveguides", 《IEEE PHOTONICS TECHNOLOGY LETTERS》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103852916B (en) | 2018-07-27 |
| CN103852916A (en) | 2014-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7447389B2 (en) | Optical modulator | |
| CN103454723B (en) | Optical waveguide components | |
| US20150234252A1 (en) | Optical modulator | |
| JP5077480B2 (en) | Optical waveguide device | |
| CN103885210B (en) | Electrooptic modulator | |
| US9116413B2 (en) | Electro-optic modulator | |
| CN112835215A (en) | Lithium niobate thin film electro-optical modulator chip and modulator | |
| CN103676214A (en) | Optical modulator | |
| CN106019643A (en) | Wafer structure for Mach-Zehnder optical modulator | |
| WO2018059061A1 (en) | Micro-ring modulator, ultra-wideband modulator and modulation system | |
| US8923657B2 (en) | Electro-optic modulator | |
| TW201441721A (en) | Optic-electro modulator | |
| CN106125351A (en) | A kind of reflective electrooptic phase-modulator | |
| JP5229378B2 (en) | Optical waveguide device | |
| CN103852916B (en) | Electrooptic modulator | |
| TWI557468B (en) | Electro-optical modulator | |
| CN103852917B (en) | Electrooptic modulator | |
| TW201441720A (en) | Optic-electro modulator | |
| TWI572913B (en) | Electro-optical modulator | |
| TWI573409B (en) | Electrooptical modulator | |
| CN103852915A (en) | Electro-optical modulator and manufacturing method thereof | |
| CN103885137B (en) | Optically coupled device | |
| TWI540357B (en) | Electrooptical modulator | |
| CN104133306A (en) | Electrooptical modulator | |
| CN103424895A (en) | Electro-optical modulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for 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: 20180313 |