CN109709692A - Silicon free space optical adjustable chip and system - Google Patents
Silicon free space optical adjustable chip and system Download PDFInfo
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- CN109709692A CN109709692A CN201811652758.8A CN201811652758A CN109709692A CN 109709692 A CN109709692 A CN 109709692A CN 201811652758 A CN201811652758 A CN 201811652758A CN 109709692 A CN109709692 A CN 109709692A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 105
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 58
- 239000010703 silicon Substances 0.000 title claims abstract description 58
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 230000004044 response Effects 0.000 claims abstract description 62
- 239000010410 layer Substances 0.000 claims description 83
- 239000011241 protective layer Substances 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 9
- 239000013307 optical fiber Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses a kind of silicon free space optical adjustable chip and systems, it is related to optical communication field, it include: response of refractive index layer, it which is provided with multiple horizontally arranged input ports along the response of refractive index layer, the control unit of multiple horizontal directions along the response of refractive index layer and vertical direction arrangement is additionally provided on the response of refractive index layer, described control unit is used to control the outbound course of the optical signal via input port input.Control layer, is set to the side of the response of refractive index layer, and the control layer is used to adjust the refractive index of the response of refractive index layer.It is the configuration of the present invention is simple, at low cost, and provide another mode for realizing wavelength-selective switches function.
Description
Technical field
The present invention relates to optical communication fields, and in particular to a kind of silicon free space optical adjustable chip and system.
Background technique
Following 10 to 15 years link rates are up to Tbit/s magnitude, and trunk node capacity is up to Pbit/s magnitude.Newly
Optical-fiber network already exceed single channel 100Gbit/s on capacity, future is up to single channel 400Gbit/s even 1Tbit/s.
And Intelligent Optical Network can sufficiently excavate the bandwidth potential of optical-fiber network, directly generate all kinds of new business in area of light, meet more
Sample, personalized user demand, so that its development attracts attention.Intelligent Optical Network mainly has high flexible by a series of
Property system equipment constitute.
Reconfigurable optical add/drop multiplexer (Reconfiguration Optical Add/drop Multiplexer,
ROADM) be Intelligent Optical Network node main implementation technique, the node remote control re-configurability that ROADM technology provides can be with
Realize the adjusting of the intelligent wavelength level of node.It is that one of current ROADM node commonly realizes shape using discretization device
Formula, essential core device are wavelength-selective switches.And the adjustable switching chip of existing wavelength-selective switches is mainly: MEMS
(Micro Electro Mechanical System MEMS), LCOS (Liquid Crystal On Silicon, silicon
Base fluid is brilliant), LC (Liquid Crystal liquid crystal) or DLP (Digital Light Processor, Digital Light Processor).
And with CMOS (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor) technology
With the continuous propulsion of silicon optical device, substituting traditional optical device with silicon optical device is a kind of trend.Therefore, it is badly in need of a kind of cost at present
The cheap free space wavelength selection switch (Wavelength Selective Switch, WSS) based on silicon light.
Summary of the invention
In view of the deficiencies in the prior art, it is simple, at low cost that the purpose of the present invention is to provide a kind of structures, and mentions
Another has been supplied to realize the silicon free space optical adjustable chip of the mode of wavelength-selective switches function.
To achieve the above objectives, the present invention is adjustable using a kind of silicon substrate of distributed arrangement of existing CMOS technology production
Dimmer part can realize that the index distribution on chip changes by directly automatically controlled modulation or by automatically controlled heat modulation
Become, so that the selection exported to incident light controls.
Generally, an inventive aspect of this specification description can be embodied in silicon free space optical adjustable chip, should
Silicon free space optical adjustable chip includes: response of refractive index layer, which is provided with multiple level sides along the response of refractive index layer
To the input port of setting, it is additionally provided with multiple horizontal directions along the response of refractive index layer on the response of refractive index layer and erects
Histogram is to the control unit of arrangement, and described control unit is for controlling the output side of the optical signal via input port input
To；And
Control layer is set to the side of the response of refractive index layer, and the control layer is for adjusting the response of refractive index
The refractive index of layer.
Each of foregoing and other embodiment can optionally include one or more of following characteristics (alone or in combination
Ground).
The silicon free space optical adjustable chip further includes protective layer, and the protective layer is oppositely arranged with the control layer,
Positioned at the other side of the response of refractive index layer.
Described control unit includes multiple microstrip antennas.
The control layer adjusts the refraction of the response of refractive index layer by way of automatically controlled modulation or automatically controlled heat modulation
Rate.
Another inventive aspect of this specification description can be embodied in silicon free space optical adjustable system, and the silicon is free
Spatial light adjustable system includes: silicon free space optical adjustable chip comprising,
Response of refractive index layer which is provided with multiple horizontally arranged input ports along the response of refractive index layer,
The control of multiple horizontal directions along the response of refractive index layer and vertical direction arrangement is additionally provided on the response of refractive index layer
Unit, described control unit are used to control the outbound course of the optical signal via input port input；
Control layer is set to the side of the response of refractive index layer, and the control layer is for adjusting the response of refractive index
The refractive index of layer；
Optical path processing unit is used to receive the light letter after being selected via the silicon free space optical adjustable chip
Number, and synthesize output optical signal；And
Fiber array is used to receive the output optical signal, and the output optical signal is coupled in different optical fiber.
Each of foregoing and other embodiment can optionally include one or more of following characteristics (alone or in combination
Ground).
The silicon free space optical adjustable chip further includes protective layer, and the protective layer is oppositely arranged with the control layer,
Positioned at the other side of the response of refractive index layer.
Described control unit includes multiple microstrip antennas.
The control layer adjusts the refraction of the response of refractive index layer by way of automatically controlled modulation or automatically controlled heat modulation
Rate.
The fiber array is the long optical device of partial wave of the grating or integrated waveguide of spatial light.
The optical path processing unit is using space optical coupling mode or the mode of integrated waveguide, by the output optical signal
It is incident in the fiber array.
The specific embodiment of the theme of this specification description can be implemented to realize one or more of following advantages.This
Silicon free space optical adjustable chip in invention the present embodiment will enter the light of different exit ports, by according to difference
Vertical position is arranged separately on silicon free space optical adjustable chip.And after the input of different wave length optical signal, according to not
Co-wavelength carries out arranged evenly in the horizontal direction.Additionally it is possible to pass through on the basis of silicon free space optical adjustable chip
Realize the optical signal of different wave length in different outputs the control of the refractive index of the control unit of silicon free space optical adjustable chip
The selectivity of port exports.The switching of silicon free space optical adjustable chip in the present embodiment instead of traditional wavelength-selective switches
Chip, and incident optical signal is entered from the chip input port.This realizes that technology is with existing wavelength-selective switches
Different.It is equivalent to and provides another mode for realizing wavelength-selective switches function, and structure is simple, at low cost.
The one or more embodiments of the detail of the theme of this specification description are illustrated in the accompanying drawings and the description below.Theme
Other features, aspects and advantages will from description, drawings and claims be apparent from.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of silicon free space optical adjustable chip in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of silicon free space optical adjustable system in the embodiment of the present invention.
In figure: 1- silicon free space optical adjustable chip, 11- response of refractive index layer, 12- control unit, 13- control layer, 14-
Protective layer, 2- optical path processing unit, 3- fiber array.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiment is some embodiments of the present application, instead of all the embodiments.
In this application, when being described to particular elements between the first component and second component, in the particular elements
May exist intervening elements between the first component or second component, intervening elements can also be not present；When being described to particular portion
When part connects other components, the particular elements can be directly connected to other components without intervening elements, can also be with
It is not directly connected to other components and there are intervening elements.
Shown in Figure 1, Fig. 1 is the structural schematic diagram of silicon free space optical adjustable chip in the embodiment of the present invention.Silicon is certainly
It include response of refractive index layer 11 and control layer 13 by spatial light adjustable chip 1.
Wherein, response of refractive index layer 11 which is provided with multiple along the horizontally arranged defeated of the response of refractive index layer 11
Inbound port.Multiple horizontal directions and vertical direction along the response of refractive index layer 11 are additionally provided on the response of refractive index layer 11
The control unit 12 of arrangement, described control unit 12 are used to control the output side of the optical signal via input port input
To
Control layer 13 is set to the side of the response of refractive index layer 11, and the control layer 13 is for adjusting the refraction
The refractive index of rate response layer 11.
In the realization of some alternatives, described control unit 12 includes multiple microstrip antennas.It is similar to the micro- of laser radar
Aerial array, can according to need the specific design for carrying out this antenna, and microstrip antenna and microcell antenna array more note
Technology, the present invention are not necessarily to be described in detail herein.
In the realization of some alternatives, the control layer 13 is adjusted described by way of automatically controlled modulation or automatically controlled heat modulation
The refractive index of response of refractive index layer 11.Specifically, referring to change by electric current the refraction of response of refractive index layer 11
Rate, or change by way of heating the refractive index of response of refractive index layer 11.
In the realization of some alternatives, the silicon free space optical adjustable chip further includes protective layer 14, the protective layer 14
It is oppositely arranged with the control layer 13, positioned at the other side of the response of refractive index layer 11.Preferably, protective layer 14 is transparent guarantor
Sheath.
Silicon free space optical adjustable chip in the present embodiment, will enter different exit ports light, by according to
Different vertical positions are arranged separately on silicon free space optical adjustable chip.And it after the input of different wave length optical signal, presses
It is carried out in the horizontal direction according to different wave length arranged evenly.Additionally it is possible on the basis of silicon free space optical adjustable chip,
Realize the optical signal of different wave length in difference by the control of the refractive index of the control unit to silicon free space optical adjustable chip
The selectivity of output port exports.Silicon free space optical adjustable chip in the present embodiment is instead of traditional wavelength-selective switches
Switch chip, and incident optical signal is entered from the chip input port.This realizes skill with existing wavelength-selective switches
Art is different.It is equivalent to and provides another mode for realizing wavelength-selective switches function, and structure is simple, cost
It is low.
Shown in Figure 2, Fig. 2 is the structural schematic diagram of silicon free space optical adjustable system in the embodiment of the present invention.It is wrapped
Include silicon free space optical adjustable chip 1, optical path processing unit 2 and fiber array 3.
Wherein, silicon free space optical adjustable chip 1 includes response of refractive index layer 11 and control layer 13.
Response of refractive index layer 11 which is provided with multiple horizontally arranged input terminals along the response of refractive index layer 11
Mouthful.Multiple horizontal directions along the response of refractive index layer 11 and vertical direction arrangement are additionally provided on the response of refractive index layer 11
Control unit 12, described control unit 12 be used for control via the input port input optical signal outbound course
Control layer 13 is set to the side of the response of refractive index layer 11, and the control layer is for adjusting the refractive index
The refractive index of response layer 11.
Optical path processing unit 2 is used to receive the optical signal after being selected via the silicon free space optical adjustable chip 1,
And synthesize output optical signal.
The output optical signal is coupled in different optical fiber by fiber array 3 for receiving the output optical signal.
In the realization of some alternatives, described control unit 12 includes multiple microstrip antennas.It is similar to the micro- of laser radar
Aerial array can according to need the specific design for carrying out this antenna.
In the realization of some alternatives, the control layer 13 is adjusted described by way of automatically controlled modulation or automatically controlled heat modulation
The refractive index of response of refractive index layer 11.Specifically, referring to change by electric current the refraction of response of refractive index layer 11
Rate, or change by way of heating the refractive index of response of refractive index layer 11.
In the realization of some alternatives, the silicon free space optical adjustable chip further includes protective layer 14, the protective layer 14
It is oppositely arranged with the control layer 13, positioned at the other side of the response of refractive index layer 11.Preferably, protective layer 14 is transparent guarantor
Sheath.
In the realization of some alternatives, the fiber array is that the grating of spatial light or integrated waveguide divide wavelength light device
Part.
In the realization of some alternatives, the optical path processing unit 2 is using space optical coupling mode or the side of integrated waveguide
The output optical signal is incident in the fiber array by formula.
The principle of the silicon free space optical adjustable system in the present embodiment is described below:
The signal light of different wave length is inputted from the input port of response of refractive index layer 11, according to different wavelength, in level
Position arranges respectively.The wherein input of different wave length optical signal can use integrated waveguide mode, can also use space optical coupling side
Formula is inputted.Then light is controlled in the distribution of vertical direction, to realize different outgoing by silicon free space optical adjustable chip 1
The position of port is corresponding.By the output spatial light angle modulated of silicon free space optical adjustable chip 1, by required optical signal, warp
It after optical path processing unit 2, is incident at fiber array 3, unwanted optical signal is arrived by the regulation of silicon free space optical adjustable chip 1
It is blocked at other positions.To realize the wavelength-selective switches function that multichannel is said into multi-pass.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of silicon free space optical adjustable chip characterized by comprising
Response of refractive index layer which is provided with multiple horizontally arranged input ports along the response of refractive index layer, described
The control unit of multiple horizontal directions along the response of refractive index layer and vertical direction arrangement is additionally provided on response of refractive index layer,
Described control unit is used to control the outbound course of the optical signal via input port input；And
Control layer is set to the side of the response of refractive index layer, and the control layer is for adjusting the response of refractive index layer
Refractive index.
2. silicon free space optical adjustable chip as described in claim 1, it is characterised in that: the silicon free space optical adjustable core
Piece further includes protective layer, and the protective layer is oppositely arranged with the control layer, positioned at the other side of the response of refractive index layer.
3. silicon free space optical adjustable chip as described in claim 1, it is characterised in that: described control unit includes multiple micro-
Band antenna.
4. silicon free space optical adjustable chip as described in claim 1, it is characterised in that: the control layer passes through automatically controlled modulation
Or the mode of automatically controlled heat modulation adjusts the refractive index of the response of refractive index layer.
5. a kind of silicon free space optical adjustable system characterized by comprising
Silicon free space optical adjustable chip comprising,
Response of refractive index layer which is provided with multiple horizontally arranged input ports along the response of refractive index layer, described
The control unit of multiple horizontal directions along the response of refractive index layer and vertical direction arrangement is additionally provided on response of refractive index layer,
Described control unit is used to control the outbound course of the optical signal via input port input；
Control layer is set to the side of the response of refractive index layer, and the control layer is for adjusting the response of refractive index layer
Refractive index；
Optical path processing unit is used to receive the optical signal after being selected via the silicon free space optical adjustable chip, and
Synthesize output optical signal；And
Fiber array is used to receive the output optical signal, and the output optical signal is coupled in different optical fiber.
6. silicon free space optical adjustable system as claimed in claim 5, it is characterised in that: the silicon free space optical adjustable core
Piece further includes protective layer, and the protective layer is oppositely arranged with the control layer, positioned at the other side of the response of refractive index layer.
7. silicon free space optical adjustable system as claimed in claim 5, it is characterised in that: described control unit includes multiple micro-
Band antenna.
8. silicon free space optical adjustable system as claimed in claim 5, it is characterised in that: the control layer passes through automatically controlled modulation
Or the mode of automatically controlled heat modulation adjusts the refractive index of the response of refractive index layer.
9. silicon free space optical adjustable system as claimed in claim 5, it is characterised in that: the fiber array is spatial light use
Grating or integrated waveguide the long optical device of partial wave.
10. silicon free space optical adjustable system as claimed in claim 9, it is characterised in that: the optical path processing unit uses
The output optical signal is incident in the fiber array by the mode of space optical coupling mode or integrated waveguide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811652758.8A CN109709692A (en) | 2018-12-28 | 2018-12-28 | Silicon free space optical adjustable chip and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811652758.8A CN109709692A (en) | 2018-12-28 | 2018-12-28 | Silicon free space optical adjustable chip and system |
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| CN109709692A true CN109709692A (en) | 2019-05-03 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5786817A (en) * | 1980-11-19 | 1982-05-31 | Nec Corp | Matrix optical switch |
| US4693547A (en) * | 1986-02-24 | 1987-09-15 | The United States Of America As Represented By The Secretary Of The Air Force | Optically controlled integrated optical switch |
| CN1353826A (en) * | 1999-03-31 | 2002-06-12 | 布里斯托尔大学 | Optical crosspoint switch using vertical coupled waveguide structure |
| US20080292240A1 (en) * | 2004-09-21 | 2008-11-27 | Maki Jeffery J | Optical Switches |
| JP2012230337A (en) * | 2011-04-27 | 2012-11-22 | Nippon Telegr & Teleph Corp <Ntt> | Wavelength selective switch |
| EP2957935A1 (en) * | 2014-06-18 | 2015-12-23 | Karlsruher Institut für Technologie | Nanophotonic spatial light modulator |
-
2018
- 2018-12-28 CN CN201811652758.8A patent/CN109709692A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5786817A (en) * | 1980-11-19 | 1982-05-31 | Nec Corp | Matrix optical switch |
| US4693547A (en) * | 1986-02-24 | 1987-09-15 | The United States Of America As Represented By The Secretary Of The Air Force | Optically controlled integrated optical switch |
| CN1353826A (en) * | 1999-03-31 | 2002-06-12 | 布里斯托尔大学 | Optical crosspoint switch using vertical coupled waveguide structure |
| US20080292240A1 (en) * | 2004-09-21 | 2008-11-27 | Maki Jeffery J | Optical Switches |
| JP2012230337A (en) * | 2011-04-27 | 2012-11-22 | Nippon Telegr & Teleph Corp <Ntt> | Wavelength selective switch |
| EP2957935A1 (en) * | 2014-06-18 | 2015-12-23 | Karlsruher Institut für Technologie | Nanophotonic spatial light modulator |
Non-Patent Citations (1)
| Title |
|---|
| YUTA GOEBUCHI ET AL: "Optical cross-connect circuit using hitless wavelength selective switch", 《OPTICS EXPRESS》 * |
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