CN106019639A - Wavelength-adjustable multimode interference coupler - Google Patents
Wavelength-adjustable multimode interference coupler Download PDFInfo
- Publication number
- CN106019639A CN106019639A CN201610530139.6A CN201610530139A CN106019639A CN 106019639 A CN106019639 A CN 106019639A CN 201610530139 A CN201610530139 A CN 201610530139A CN 106019639 A CN106019639 A CN 106019639A
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- China
- Prior art keywords
- wavelength
- interferometer
- mode
- multimode
- interference coupler
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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
- G02F1/01—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
- G02F1/0126—Opto-optical modulation, i.e. control of one light beam by another light beam, not otherwise provided for in this subclass
-
- 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
- G02F1/0147—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 thermo-optic effects
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention relates to a wavelength-adjustable multimode interference coupler. The wavelength-adjustable multimode interference coupler comprises a multimode interferometer and is characterized by further comprising an optical radiation generator arranged above the multimode interferometer, wherein the optical radiation generator emits a light source with an appropriate wavelength to excite the multimode interferometer; a heating resistor also can be arranged above the multimode interferometer; the heating resistor is connected to a power supply; the power supply is used for electrically heating the heating resistor and exciting the multimode interferometer; the power of an excitation source is further adjusted for the multimode interferometer according to the requirements, so that the concentration of current carriers is adjusted, and thus the phase of the multimode interferometer is changed and the multimode interferometer operates under different wavelengths. Through the wavelength-adjustable multimode interference coupler, the concentration of the current carriers in the multimode interferometer can be adjusted by an optical irradiation manner or a manner of heating via the heating resistor according to the requirements, so that the operation stability of the wavelength-adjustable multimode interference coupler can be improved; meanwhile, the operation wavelength of the wavelength-adjustable multimode interference coupler can be changed according to the requirements.
Description
Technical field
The present invention relates to the bonder field in optoelectronic information, the multiple-mode interfence coupling of a kind of adjustable wavelength
Device.
Background technology
In recent years, along with the fast development of Internet of Things, optical fiber telecommunications system is as the important base of Internet of Things, and its development is subject to
Pay attention to more.In long-distance backbone network field, along with maturation and the development of optical transport technology, in world wide, occur in that main line
The construction upsurge of transmission network, transmission bandwidth, transmission capacity are fast-developing.
Along with the development of optical fiber telecommunications system, the development of optical device is faced with opportunities and challenges too, how to develop
Function admirable, cheap optical device have become as the matter of utmost importance that people are faced.In optic communication with in various devices, light
Bonder is that a class can make the optical signal in transmission couple in special construction region, and carries out the device reallocated.Just
Being this characteristic due to bonder, from wavelength-division multiplex (WDM) system to EPON (PON) system, photo-coupler all has
There is irreplaceable critical role.Photo-coupler can be divided into fused tapered and waveguide type, waveguide according to structure and processing technology
Type photo-coupler has the features such as volume is little, lightweight, be easily integrated, and is widely used in integrated optics.As
The one of waveguide type photo-coupler, multiple-mode interfence (MMI) photo-coupler is wider with its compact conformation, low insertion loss, frequency band,
Processing technology is simple, tolerance is good and to features such as polarization insensitives, has been increasingly being applied in optical communication system.Pass
System MMI type device mostly is Si base or GaAs base limits by force (sandwich layer and clad refractive rate variance are bigger) ridged waveguide structure.
Thus, reduce the process allowance impact on device performance by technological means, and make the multi-mode interferometer can be many
Work under individual wavelength and be extremely important.The principle of multi-mode interferometer is self-imaging effect, mainly has square and wedge shape
Two kinds of structures, have Lithium metaniobate, polymer, III-V, silicon etc. different prepare material.Owing to the refractive index of different materials is different,
Therefore light field is the most different in the distribution of different materials structure, according to optical field distribution and the application requirement of concrete material, design concrete
The multi-mode interferometer of structure.But, in material, the concentration of carrier creates important impact to the refractive index of material, by light
According to or the mode of heating can change the carrier concentration of material, thus effectively change the refractive index of material, and then realize many
Mode interference instrument works under multi-wavelength.
Summary of the invention
In view of this, it is an object of the invention to provide the multi-mode interference coupler of a kind of adjustable wavelength, pass through photoirradiation
Or the mode adding thermal resistance heating can regulate the concentration of carrier in multi-mode interferometer as required, such that it is able to improve device
The stability of work, and the operation wavelength of device can be changed as required.
The present invention uses below scheme to realize: the multi-mode interference coupler of a kind of adjustable wavelength, including a multiple-mode interfence
Instrument, also includes that one is arranged at the light radiation generator above described multi-mode interferometer, and described light radiation generator is launched suitably
Described multi-mode interferometer is encouraged that (radiant light wavelength should prepare the band of material equal to less than multi-mode interferometer by the light source of wavelength
The excitation wavelength that gap is corresponding) so that it is material internal produces carrier, thus changes the refractive index of material, the most as required
The power of regulation light source, thus regulates the concentration of carrier, it is achieved the change of described multi-mode interferometer phase place also makes it in difference
Wavelength under work.
The present invention also uses below scheme to realize: the multi-mode interference coupler of a kind of adjustable wavelength, does including a multimode
Interferometer, also includes that one is arranged at above described multi-mode interferometer and adds thermal resistance, described in add thermal resistance and a power supply is connected, institute
State power supply and the described thermal resistance that adds is carried out electricity heating, described multi-mode interferometer is encouraged so that it is material internal produces and carries
Stream, thus change the refractive index of material, regulation adds the power of thermal resistance the most as required, thus regulates the dense of carrier
Degree, it is achieved the change of described multi-mode interferometer phase place also makes it work under different wavelength.
In sum, the present invention encourages the carrier in multi-mode interferometer by the way of light, heat, thus changes and regulation and control
The concentration of carrier in multi-mode interferometer, such that it is able to change phase deviation and operation wavelength by the power of driving source.
Owing to, under general environment, the refractive index of material is certain, therefore the operation wavelength model of the multi-mode interferometer of processes
Enclose the narrowest, additionally, due to device is affected by process allowance, ambient temperature etc., thus have impact on device
The characteristics such as phase deviation.Therefore, the present invention by photoirradiation or add thermal resistance heating by the way of can regulate multimode as required
The concentration of carrier in interferometer, such that it is able to improve the stability of device work, and can change device as required
Operation wavelength.And this patent is the most applicable for the multi-mode interferometer of different structure, different materials.
Accompanying drawing explanation
Fig. 1 is the basic functional principle schematic diagram of multi-mode interferometer.
Fig. 2 is the structure chart of the multi-mode interferometer of light stimulus.
Fig. 3 is the structure chart of the multi-mode interferometer of thermal excitation.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
As it is shown in figure 1, the basic functional principle of multi-mode interferometer is: flashlight and local oscillator light enter many from two inputs respectively
Mode interference instrument, exports 4 road optical signals after mixed.
The present embodiment provides the multi-mode interference coupler of a kind of adjustable wavelength, including a multi-mode interferometer, also includes one
Being arranged at the light radiation generator above described multi-mode interferometer, the light source pair of suitable wavelength launched by described light radiation generator
Described multi-mode interferometer encourages so that it is material internal produces carrier, thus changes the refractive index of material, further basis
Need to regulate the power of light source, thus regulate the concentration of carrier, it is achieved the change of described multi-mode interferometer phase place and make its
Work under different wavelength.As in figure 2 it is shown, light is inhaled to multi-mode interferometer surface, multi-mode interferometer by light from top irradiation
Receive.
The present embodiment also provides for the multi-mode interference coupler of a kind of adjustable wavelength, including a multi-mode interferometer, also includes
One is arranged at above described multi-mode interferometer adds thermal resistance, described in add thermal resistance and a power supply and be connected, described power supply is to institute
State and add thermal resistance and carry out electricity heating, described multi-mode interferometer is encouraged so that it is material internal produces carrier, thus changes
Becoming the refractive index of material, regulation adds the power of thermal resistance the most as required, thus regulates the concentration of carrier, it is achieved described
The change of multi-mode interferometer phase place also makes it work under different wavelength.As it is shown on figure 3, heating is placed at multi-mode interferometer top
Resistance, adds the carrier concentration within thermal excitation multi-mode interferometer by resistance.
In sum, the present embodiment encourages the carrier in multi-mode interferometer by the way of light, heat, thus changes and adjust
The concentration of carrier in control multi-mode interferometer, such that it is able to change phase deviation and operation wavelength by the power of driving source.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modify, all should belong to the covering scope of the present invention.
Claims (2)
1. a multi-mode interference coupler for adjustable wavelength, including a multi-mode interferometer, it is characterised in that: also include a setting
A light radiation generator above described multi-mode interferometer, described light radiation generator launches the light source of suitable wavelength to described
Multi-mode interferometer encourages so that it is material internal produces carrier, thus changes the refractive index of material, the most as required
The power of regulation light source, thus regulates the concentration of carrier, it is achieved the change of described multi-mode interferometer phase place also makes it in difference
Wavelength under work.
2. a multi-mode interference coupler for adjustable wavelength, including a multi-mode interferometer, it is characterised in that: also include a setting
Above described multi-mode interferometer one adds thermal resistance, described in add thermal resistance and a power supply and be connected, described power supply is to described heating
Resistance carries out electricity heating, encourages described multi-mode interferometer so that it is material internal produces carrier, thus changes material
Refractive index, regulation adds the power of thermal resistance the most as required, thus regulates the concentration of carrier, it is achieved described multimode is done
The change of interferometer phase place also makes it work under different wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610530139.6A CN106019639A (en) | 2016-07-07 | 2016-07-07 | Wavelength-adjustable multimode interference coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610530139.6A CN106019639A (en) | 2016-07-07 | 2016-07-07 | Wavelength-adjustable multimode interference coupler |
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| Publication Number | Publication Date |
|---|---|
| CN106019639A true CN106019639A (en) | 2016-10-12 |
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| CN201610530139.6A Pending CN106019639A (en) | 2016-07-07 | 2016-07-07 | Wavelength-adjustable multimode interference coupler |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08179168A (en) * | 1994-12-27 | 1996-07-12 | Nippon Telegr & Teleph Corp <Ntt> | Optical integrated circuit |
| JP2000241644A (en) * | 1998-12-22 | 2000-09-08 | Nippon Telegr & Teleph Corp <Ntt> | Multi-mode interference optical coupler |
| CN1904656A (en) * | 2006-07-05 | 2007-01-31 | 东南大学 | Compact regulatable type multi-mode interference coupler |
| CN101784926A (en) * | 2007-08-24 | 2010-07-21 | 日本电信电话株式会社 | Polarized wave-independent waveguide type optical interferometric circuit |
-
2016
- 2016-07-07 CN CN201610530139.6A patent/CN106019639A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08179168A (en) * | 1994-12-27 | 1996-07-12 | Nippon Telegr & Teleph Corp <Ntt> | Optical integrated circuit |
| JP2000241644A (en) * | 1998-12-22 | 2000-09-08 | Nippon Telegr & Teleph Corp <Ntt> | Multi-mode interference optical coupler |
| CN1904656A (en) * | 2006-07-05 | 2007-01-31 | 东南大学 | Compact regulatable type multi-mode interference coupler |
| CN101784926A (en) * | 2007-08-24 | 2010-07-21 | 日本电信电话株式会社 | Polarized wave-independent waveguide type optical interferometric circuit |
Non-Patent Citations (4)
| Title |
|---|
| DAVID S.LEVY等: "Length Reduction of Tapered MMI Devices", 《IEEE PHOTONICS TECHNOLOGY LETTERS》 * |
| SEOK-HWAN JEONG AND KEN MORITO: "Compact optical 90° hybrid employing a tapered 2×4 MMI coupler serially connected by a 2×2 MMI coupler", 《OPTICS EXPRESS》 * |
| 陈克坚等: "光生载流子对半导体波导材料折射率影响的模型研究", 《光学仪器》 * |
| 高晴: "载流子注入型MMI光开关设计", 《浙江大学硕士学位论文》 * |
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