CN106707409A - Device and method for realizing spatial light dispersion - Google Patents
Device and method for realizing spatial light dispersion Download PDFInfo
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- CN106707409A CN106707409A CN201510500734.0A CN201510500734A CN106707409A CN 106707409 A CN106707409 A CN 106707409A CN 201510500734 A CN201510500734 A CN 201510500734A CN 106707409 A CN106707409 A CN 106707409A
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Abstract
The invention discloses a device for realizing spatial light dispersion. The device comprises an integrated on-chip splitter and N optical antenna emitters; the integrated on-chip splitter divides optical signals with N frequencies into optical signals of N different optical paths in the chip plane according to the different frequencies, outputs the optical signals via output waveguide ports; each optical antenna emitter is connected with one output waveguide port of the on-chip splitter correspondingly, and outputs optical signals of the optical paths corresponding to the different frequencies to different positions in a space beyond the chip plane; and N represents a natural number not lower than 2. The invention also discloses a method for realizing spatial light dispersion. The device and method can realize complex spatial dispersion distribution under the condition that high-frequency resolution is ensured.
Description
Technical field
The present invention relates to technical field of optical fiber communication, more particularly to a kind of device for realizing space optical dispersion
And method.
Background technology
Space optical dispersion is the diverse location that the light of different wave length is diffused to space by optical instrument,
Conversion, mapping of the frequency to space are realized, it has important for the research of space optics with application
Effect.Traditional space optical dispersion scheme can be by discrete device, and such as prism, grating is realized.
Dispersion scheme based on discrete device grating, using the single beam diffraction and multiple beam of diffraction grating
Interfere to realize dispersion.Grating has many kinds, reflecting grating, transmission grating, plane grating, concave surface light
Grid etc..The existing process technology of grating can realize that unit very high is carved on high accuracy optical grating element face
Line number and delineation area, and can in full spectrum segment normal work.Different color light incides grating
On, the angle of diffraction is different, therefore can realize the chromatic dispersion effects of light beam.Equally, for grating dispersion element
For, it is also desirable to consider how to eliminate the eclipsing effects of spectrum level.The resolution ratio of grating dispersion is mainly received
It is limited to the groove number of grating, and grating constant and spectrum level influence its angle dispersive power.The side of this grating
The frequency resolution of case, is limited to the incisure density of grating, to realize that frequency resolution higher needs more
Big size, and, dispersion spatial arrangement compares limitation, it is impossible to realize complicated spatial dispersion distribution.
The content of the invention
It is an object of the invention to provide a kind of device and method for realizing space optical dispersion, can ensure
The spatial dispersion distribution of complexity is realized in the case of upper frequency resolution ratio.
For achieving the above object, the invention provides a kind of device for realizing space optical dispersion, the device
Including：
Optical splitter on integrated piece, the optical signal for will include N number of frequency is put down in chip on different tones
The optical signal of N number of different light paths is separated on face, is exported from output waveguide mouthful；
N number of optical antenna transmitter, each of each optical antenna transmitter and optical splitter on the integrated piece is defeated
Go out waveguide mouthful correspondence connection, for by outside the optical signal output of the corresponding light path of different frequency to chip plane
On the diverse location of space；N is the natural number not less than 2.
For achieving the above object, present invention also offers a kind of method for realizing space optical dispersion, the party
Method includes：
The optical signal for including N number of frequency is separated into N number of different light paths on chip plane on different tones
Optical signal；
By in the optical signal output of the corresponding light path of different frequency to the space diverse location outside chip plane.
In sum, be separated to the optical signal of different frequency not by optical splitter on integrated piece by the present invention
Same output waveguide mouthful, then realize different spaces by setting the position of different optical antenna transmitters
The optical dispersion of position.In the prior art, space optical dispersion, dispersion space are realized according to discrete device grating
Limitation is compared in arrangement, and key can arbitrarily set each optical antenna transmitter as needed in the present invention
Position realize the optical dispersion of different locus.
Brief description of the drawings
Fig. 1 is the apparatus structure schematic diagram that the present invention realizes space optical dispersion.
Fig. 2 is that optical splitter uses array waveguide grating, optical antenna transmitter to be sent out using grating on integrated piece
Emitter realizes the schematic diagram of space optical dispersion.
Specific embodiment
To make the objects, technical solutions and advantages of the present invention become more apparent, develop simultaneously referring to the drawings
Embodiment, is described in further detail to the present invention program.
The optical signal of different frequency is separated to different outputs by the present invention by optical splitter on integrated piece
Waveguide mouthful, then the light by setting the position of different optical antenna transmitters to realize different locus
Dispersion.In the prior art, space optical dispersion is realized according to discrete device grating, dispersion spatial arrangement compares
Limitation, and key as needed, can arbitrarily set the position of each optical antenna transmitter in the present invention,
To realize the optical dispersion of different locus.
Fig. 1 is the apparatus structure schematic diagram that the present invention realizes space optical dispersion, and the device includes：Integrated piece
Upper optical splitter 101 and N number of optical antenna transmitter 102, wherein, optical splitter 101 and N number of on integrated piece
Optical antenna transmitter 102 is all integrated on chip.
Optical splitter 101 on integrated piece, for the optical signal by N number of frequency is included on different tones in core
The optical signal of N number of different light paths is separated on plate plane, is exported from output waveguide mouthful；
N number of optical antenna transmitter 102, each optical antenna transmitter and optical splitter on the integrated piece each
Output waveguide mouthful correspondence connection, for by outside the optical signal output of the corresponding light path of different frequency to chip plane
Space diverse location on；N is the natural number not less than 2.
Wherein, optical splitter can be array waveguide grating on integrated piece, or micro-loop array etc..Other energy
Enough realize that the function element of multi-wavelength filtering is all within the scope of the present invention.Optical antenna transmitter can be with
It is light barrier transmitter, or gold/silver nano particle optical antenna transmitter etc..
Array waveguide grating is following is a brief introduction of, array waveguide grating is that a kind of angle dispersion type light is passive
Device, it was based on planar light wave circuit technology, in the M.K.Smit by Dutch Delf universities in 1988
Propose, it is formally named as array waveguide grating by Japanese NTT companies afterwards.Array waveguide grating by
Input waveguide, output waveguide, Waveguide array and two planar waveguide (free propagation region) compositions, and
It is integrated on the same substrate.Array waveguide grating due to itself multifunctional performance, low cost of manufacture,
With optical semiconductor it is integrated the advantages of, make important in fiber optic communication and following photonic network
Element.The operation principle of array waveguide grating is, when multi-wavelength/wide band optical signal is coupled to array
During the input waveguide of waveguide optical grating, on Rowland circle, multi-wavelength/wide band optical signal will focus on flat board
Waveguide is interior and produces the Gaussian beam of diffraction, the Gaussian beam of diffraction to project the input port of Waveguide array.In battle array
In train wave is led, because any adjacent array waveguide has equal length difference Δ L, this structure will make battle array
Train wave is led the multi-wavelength of middle transmission/broad band light signal and produces the out of phase related to wavelength poor (phase is prolonged
Late), the phase offset corresponding to Δ L will be forced on the optical signal transmitted in each waveguide, make each
The signal of setted wavelength is focused on the focal line of output planar waveguide with different inclinations of wave front.If passed through
Design just the port locations of output waveguide on output planar waveguide focal line, then different inclinations of wave front
Optical signal is just coupled in the different channels of output waveguide, it is achieved thereby that existing to different wave length/spectrum component
The function being spatially separated.
Fig. 2 is that optical splitter uses array waveguide grating, optical antenna transmitter to be sent out using grating on integrated piece
Emitter realizes the schematic diagram of space optical dispersion.It should be noted that array waveguide grating is mainly used in not
The optical signal of same frequency is separated on chip plane, figure it is seen that the optical signal of different frequency from
During each output waveguide mouthful output, still in same chip plane, linear arrangement.Therefore, this hair
The bright output waveguide by each array waveguide grating mouthful correspondence connection one optical antenna transmitter such as grating transmitting
Device, by setting the position of each optical antenna transmitter, puts down the optical signal launch of each frequency to chip
On optional position outside face.In the embodiment, it is assumed that including 5 optical signals of different frequency, by this
The array waveguide grating of invention, is separated into 5 optical signals of different light paths on chip plane, then each
Light barrier transmitter launches the optical signal of respective frequencies, shape in the detection plane above chip to chip top
Into the space optical dispersion of pentagon shaped.
The embodiment of the present invention realizes the resolution ratio of the device of space optical dispersion by the resolution ratio of array waveguide grating
Determine, depend mainly on port interval, the diffraction time peace Lamb wave section of the exit end of array waveguide grating
Focal length.Similarly, if optical splitter is using micro-loop array on piece integrated in realizing the device of space optical dispersion,
Then realize that the resolution ratio of the device of space optical dispersion is determined by the resolution ratio of micro-loop.
The spatial arrangement of different frequency optical signal is determined by the arrangement of optical antenna transmitter, and different frequency
The shooting angle of optical signal is determined by the factor such as cycle, dutycycle, etching depth of optical antenna transmitter.
Here, it is adjacent because optical antenna transmitter has certain angle of divergence, therefore in certain exit height
Optical antenna transmitter transmitting optical signal can intersect aliasing, this detection exit height by optical antenna send out
The interval of the angle of divergence of emitter and two neighboring optical antenna transmitter determines.So needing to draw in actual detection
Enter after microlens array is collimated to output optical signal and detect, microlens array will be in optical antenna transmitter
The optical signal of transmitting have it is overlapping before collimated, so, the angle of divergence of optical antenna transmitter and adjacent two
The interval of individual optical antenna transmitter determines the height of microlens array, sets micro- by above chip
Lens array can realize the spatial distribution output of the optical signal of more stable different frequency.
Preferably, therefore, realize that the device of space optical dispersion is further included：Microlens array 103, is set
It is upward in the recipient of the optical signal exported from optical antenna transmitter, for carrying out standard to every road output optical signal
Directly.
Based on the above-mentioned device for realizing space optical dispersion, the present invention proposes a kind of side for realizing space optical dispersion
Method, the method includes：
Step 31, will include N number of frequency optical signal be separated on chip plane on different tones it is N number of
The optical signal of different light paths；
Step 32, by the optical signal of different frequency corresponding light path output to the space difference position outside chip plane
Put.
Preferably, the method is further included：Every road output optical signal is collimated.
The technical scheme that the present invention is provided, can bring following benefit：
First, compared with the discrete device grating of prior art, in the case of same frequency resolution ratio, device
Size can be smaller.
2nd, because the position of optical antenna transmitter can arbitrarily arrange, it is achieved that the space of space optical dispersion
Arrangement is just more flexible, it is possible to achieve arbitrarily complicated spatial dispersion distribution.
3rd, the setting of microlens array, it is possible to achieve the spatial distribution of the optical signal of more stable different frequency
Output.
More than, only presently preferred embodiments of the present invention is not intended to limit the scope of the present invention.
All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., all should
It is included within protection scope of the present invention.
Claims (6)
1. a kind of device for realizing space optical dispersion, the device includes：
Optical splitter on integrated piece, the optical signal for will include N number of frequency is put down in chip on different tones
The optical signal of N number of different light paths is separated on face, is exported from output waveguide mouthful；
N number of optical antenna transmitter, each of each optical antenna transmitter and optical splitter on the integrated piece is defeated
Go out waveguide mouthful correspondence connection, for by outside the optical signal output of the corresponding light path of different frequency to chip plane
On the diverse location of space；N is the natural number not less than 2.
2. device as claimed in claim 1, it is characterised in that optical splitter includes battle array on the integrated piece
Train wave guide grating, or micro-loop array.
3. device as claimed in claim 1, it is characterised in that the optical antenna transmitter is grating transmitting
Device, or gold/silver nano particle optical antenna transmitter.
4. device as claimed in claim 1, it is characterised in that the device is further included：
Microlens array, is arranged at the recipient of the optical signal exported from optical antenna transmitter upwards, for right
Per road, output optical signal is collimated.
5. a kind of method for realizing space optical dispersion, the method includes：
The optical signal for including N number of frequency is separated into N number of different light paths on chip plane on different tones
Optical signal；
By in the optical signal output of the corresponding light path of different frequency to the space diverse location outside chip plane.
6. method as claimed in claim 5, it is characterised in that the method is further included：It is defeated to every road
Optical signals are collimated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510500734.0A CN106707409A (en) | 2015-08-14 | 2015-08-14 | Device and method for realizing spatial light dispersion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510500734.0A CN106707409A (en) | 2015-08-14 | 2015-08-14 | Device and method for realizing spatial light dispersion |
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| CN106707409A true CN106707409A (en) | 2017-05-24 |
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| CN201510500734.0A Pending CN106707409A (en) | 2015-08-14 | 2015-08-14 | Device and method for realizing spatial light dispersion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684657A (en) * | 2020-12-24 | 2021-04-20 | 四川长虹电器股份有限公司 | Method for collimating solid-state light-emitting chip or chip array light source |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051103A (en) * | 2006-04-06 | 2007-10-10 | Jds尤尼弗思公司 | Multi-unit planar lightwave circuit wavelength dispersive device |
| CN102055546A (en) * | 2009-10-28 | 2011-05-11 | 华为技术有限公司 | Method, device and system for locking wavelength of optical signal |
| CN102175319A (en) * | 2011-01-26 | 2011-09-07 | 浙江大学 | Discrete wavelength interval high-resolution microspectrometer based on planar integrated waveguide grating |
| CN103941235A (en) * | 2014-02-26 | 2014-07-23 | 上海交通大学 | Full-optical-control phased-array radar transmitter |
| CN106792281A (en) * | 2015-11-20 | 2017-05-31 | 上海贝尔股份有限公司 | Optical line terminal and optical network unit |
-
2015
- 2015-08-14 CN CN201510500734.0A patent/CN106707409A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051103A (en) * | 2006-04-06 | 2007-10-10 | Jds尤尼弗思公司 | Multi-unit planar lightwave circuit wavelength dispersive device |
| CN102055546A (en) * | 2009-10-28 | 2011-05-11 | 华为技术有限公司 | Method, device and system for locking wavelength of optical signal |
| CN102175319A (en) * | 2011-01-26 | 2011-09-07 | 浙江大学 | Discrete wavelength interval high-resolution microspectrometer based on planar integrated waveguide grating |
| CN103941235A (en) * | 2014-02-26 | 2014-07-23 | 上海交通大学 | Full-optical-control phased-array radar transmitter |
| CN106792281A (en) * | 2015-11-20 | 2017-05-31 | 上海贝尔股份有限公司 | Optical line terminal and optical network unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684657A (en) * | 2020-12-24 | 2021-04-20 | 四川长虹电器股份有限公司 | Method for collimating solid-state light-emitting chip or chip array light source |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
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| RJ01 | Rejection of invention patent application after publication |