CN110927885B - Narrow-band optical filter based on microdisc resonator - Google Patents
Narrow-band optical filter based on microdisc resonator Download PDFInfo
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- CN110927885B CN110927885B CN201911211863.2A CN201911211863A CN110927885B CN 110927885 B CN110927885 B CN 110927885B CN 201911211863 A CN201911211863 A CN 201911211863A CN 110927885 B CN110927885 B CN 110927885B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/29395—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device configurable, e.g. tunable or reconfigurable
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/2938—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
Abstract
An optical filter based on microdisc resonators, the filter comprising: the input optical waveguide is used for inputting a broadband optical signal to be processed; the optical filter of the microdisk, including the optical filter of the first stage microdisk and optical filter of the second stage microdisk, each optical filter of microdisk includes the microdisk resonator and input end straight waveguide and download section straight waveguide adjacent to it; the optical waveguide comprises a first intermediate optical waveguide and a second intermediate optical waveguide, and is used for transmitting broadband optical signals between the optical filters of the microdisk; and the output optical waveguide is used for outputting a broadband optical signal passing through the filtering output end of the second-stage microdisk optical filter to complete the filtering function of the integrated optical filter. The filter only adopts two microdisk resonator structures, and has the advantages of simple structure, low loss, small volume and small adjusting and controlling difficulty. The structure realizes the filtering function of narrow bandwidth and high roll-off rate, and can meet the requirement of the optical fiber communication field on microwave photon signal processing.
Description
Technical Field
The invention relates to the technical field of optical fiber communication, in particular to a narrowband optical filter based on a microdisc resonator.
Background
The emergence of Wavelength Division Multiplexing (WDM) technology and Erbium-Doped Fiber amplifiers (EDFA) makes optical communication breakthrough and the speed of optical Fiber transmission networks increase continuously. The optical filter uses an optical method and an optical element to realize a filtering function of an optical signal in terms of signal processing in the technical field of optical fiber communication. Compared with the traditional electronic technology, the optical element has the characteristics of flexibility and wide bandwidth, and can directly filter the microwave signal with high frequency bandwidth. The method has great significance in the aspects of high-level application of broadband access, quantum communication, laser radar and astronomical systems. The selectivity of the target frequency band is an important index of an optical filter applied to microwave photon signal processing, which requires that the optical filter has a high roll-off rate and a narrower passband bandwidth, and the smaller the proportion of the passband bandwidth in a free spectral region, the stronger the selectivity. The optical filter based on integrated photonics is convenient for large-scale integration, and meanwhile, a mature semiconductor process processing platform is utilized, so that large-scale low-cost mass production can be realized. Common optical filters with narrow bandwidth and high roll-off rate usually adopt structures such as Fiber Bragg Gratings (FBGs), Mach-Zehnder (MZ, Mach-Zehnder), and the like, but the above schemes have the problems of large loss, large volume, high cost, poor stability, difficult adjustment and control, and the like.
Disclosure of Invention
In view of the above, the main object of the present invention is to provide a narrowband optical filter based on microdisc resonators, which is intended to at least partially solve at least one of the above technical problems.
In order to achieve the above object, the present invention provides a narrowband optical filter based on a microdisc resonator, comprising:
an input optical waveguide 100 for inputting a broadband optical signal to be processed;
the microdisk optical filter 200 comprises a first stage microdisk optical filter 201 and a second stage microdisk optical filter 202, each stage of microdisk optical filter 201, 202 comprises a microdisk resonator and an input end straight waveguide and a download segment straight waveguide adjacent to the microdisk resonator, and is used for coupling a broadband optical signal into the download end straight waveguide of the microdisk optical filter 201, 202 and outputting from the download end of the microdisk optical filter 201, 202, i.e. the output end of the download end straight waveguide, when the broadband optical signal meets the resonance condition of the microdisk optical filter 201, 201 microdisk resonator after the broadband optical signal enters the input end of the microdisk optical filter 201, 202, i.e. the input end of the input end straight waveguide, and the broadband optical signal wave band which does not meet the resonance condition of the microdisk resonator is retained in the input end straight waveguide and passes through the through end of the microdisk optical filter 201, 202, namely, the input end is output through the straight end of the straight waveguide, so that the filtering of the input broadband optical signal is realized;
an intermediate optical waveguide 300 including a first intermediate optical waveguide 301 and a second intermediate optical waveguide 302 for transmitting a broadband optical signal between the microdisk optical filters; the microdisk optical filter 200 and the intermediate optical waveguide 300 are arranged in a staggered manner, the input optical waveguide 100 is connected to an input end of an input end straight waveguide of the first stage microdisk optical filter 201, a through end of the input end straight waveguide of the first stage microdisk optical filter 202 is connected to a first intermediate optical waveguide 301, the first intermediate optical waveguide 301 is connected to a download end of the first stage microdisk optical filter 201, an output end of the download end straight waveguide is connected to the second intermediate optical waveguide 302, and the second intermediate optical waveguide 302 is connected to a through section of an input end straight waveguide of the second stage microdisk optical filter;
and the output optical waveguide 400 is connected with the download end of the second-stage microdisk optical filter 202 and is used for outputting a broadband optical signal passing through the filtering output end of the second-stage microdisk optical filter 202 to complete the filtering function of the integrated optical filter.
The optical filter 200 adopts a ridge-like waveguide structure, and a ring of slab waveguides are introduced around the microdisk and the coupling waveguide.
The distance between the microdisk resonator in the first stage microdisk optical filter 201 and the two sections of straight waveguides is the same, so that the two filtering functions of the two paths of light waves at the straight end and the download end in the microdisk filter have the same filtering curve shape and the same resonance peak center wavelength.
Wherein, the radius, waveguide width and waveguide thickness of the microdisc resonators in the second stage microdisc filter 202 and the first stage microdisc filter 201 are kept consistent.
The distance between the microdisc resonators and the straight waveguide in the second stage microdisc optical filter 202 is greater than the distance between the microdisc resonators and the straight waveguide in the first stage microdisc optical filter 201.
After the input broadband optical signal passes through the first stage microdisk filter 201, the through end and the output end are respectively subjected to twice identical filtering processes, and the result of the twice filtering superposition generates a spectrum similar to electromagnetic induction transparency.
The central wavelength of the filter curve of the microdisk optical filter 200 can be tuned independently.
The microdisk optical filter 200 can independently tune the center wavelength of the filter curve thereof through the thermo-optic effect or the electro-optic effect.
The optical microdisc filter 200 can be manufactured on a lithium niobate, silicon dioxide, indium phosphide or gallium arsenide platform by a semiconductor process.
An optical communication device for optical filtering using an optical filter as described above.
Based on the technical scheme, compared with the prior art, the narrow-band optical filter disclosed by the invention has at least one of the following beneficial effects:
1) the filter only adopts two microdisk resonator structures, and has the advantages of simple structure, low loss, small volume and small adjusting and controlling difficulty.
2) The structure realizes the filtering function of narrow bandwidth and high roll-off rate, and can meet the requirement of the optical fiber communication field on microwave photon signal processing.
3) The micro-disk optical filter adopts a ridge-like waveguide structure, and a circle of slab waveguide is introduced around the micro-disk and the coupling waveguide, so that the optical field distribution of the mode transmitted in the micro-disk is far away from the edge of the micro-disk, the optical field is further away from the edge of the waveguide, the action of the mode optical field and the side wall of the waveguide is reduced, the probability that the mode transmitted clockwise in the disk is reflected by the side wall and forms standing wave with the clockwise transmission mode is reduced, the condition that only one micro-disk exists in the micro-disk is ensured, and the quality factor value of the micro-disk is increased.
4) After an input optical signal passes through a first-stage microdisk filter, a through end and a download end respectively carry out twice identical filtering processes, and a result of filtering superposition twice generates a spectrum similar to electromagnetic induction transparency, so that the extinction ratio of a filtering curve is increased by two times, and the roll-off rate of a spectral line is improved.
Drawings
FIG. 1 is a schematic structural diagram of a narrowband optical filter based on a microdisk resonator implemented by using two microdisk filters;
fig. 2 is a schematic diagram of the structures of two types of microdisk filter units and filter spectral lines of a through port and a download port, wherein a) is the structure of a first stage microdisk filter, b) is the structure of a second stage microdisk filter, c) is a through port filter spectral line, and d) is a download port filter spectral line;
fig. 3 is a filtering path of the through terminal and the download terminal after the signal light passes through the first stage microdisk filter, wherein a) is a path of twice filtering of the through terminal in the first stage microdisk filter, and b) is a path of the first time filtering of the download terminal in the first stage microdisk filter;
FIG. 4 is a schematic diagram of the filtering curves of the device at various stages in the operating state, wherein a) is the filtering curve of the first stage microdisk filter, and the filtering spectrum of the first stage microdisk filter has a narrow peak in a groove; b) the filter curve of the second stage microdisk optical filter is shown; c) the filter curve of the integrated optical filter formed by cascading the two stages of microdisk optical filters is shown.
In the above drawings, the reference numerals have the following meanings:
100-input optical waveguide
200-microdisk optical filter
201-first order optical filter 202-second order optical filter
300-intermediate optical waveguide
301-first intermediate optical waveguide 302-second intermediate optical waveguide
400-output optical waveguide
Detailed Description
In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.
Referring to fig. 1, the present invention discloses a narrowband optical filter based on a microdisc resonator, comprising:
the optical waveguide 100 is used for inputting a broadband optical signal to be processed.
The microdisk optical filter 200 comprises a first stage microdisk optical filter 201 and a second stage microdisk optical filter 202, wherein each stage of microdisk optical filter is composed of a microdisk resonator and two straight waveguides close to the microdisk resonator and is used for filtering a broadband optical signal input into the straight waveguides, after the optical signal enters a certain straight waveguide, a wave band meeting the microdisk resonance condition is coupled to a downloading end of another straight waveguide through the microdisk, and a wave band not meeting the microdisk resonance condition is reserved at a straight end of the original straight waveguide.
Fig. 2(a) shows a structure of a first stage microdisk optical filter 201, fig. 2(b) shows a structure of a second stage microdisk optical filter 202, fig. 2(c) shows a schematic diagram of a filter spectrum line of a through end, and fig. 2(d) shows a schematic diagram of a filter spectrum line of a download end.
In the embodiment of the present invention, the distance between the microdisc resonators in the first stage microdisc optical filter 201 and the two sections of straight waveguides is the same, and the distance between the microdisc resonators in the second stage microdisc optical filter 202 and the straight waveguides is larger than the distance between the microdisc resonators in the first stage microdisc optical filter 201 and the straight waveguides.
The intermediate optical waveguide 300 includes a first intermediate optical waveguide 301 and a second intermediate optical waveguide 302 for transmitting signal light between the microdisk optical filters.
The microdisk optical filter 200 is arranged in a staggered way with the intermediate optical waveguide 300, the input optical waveguide 100 is connected with the input end of the waveguide above the first stage microdisk optical filter 201, the corresponding through end of the input end is connected with the other section of waveguide of the first stage microdisk optical filter 201 through the intermediate optical waveguide 301, and the waveguide is then connected with the second stage microdisk optical filter 202 through the intermediate optical waveguide 303.
And the output optical waveguide 400 is configured to output the signal light at the download port of the second stage microdisk optical filter 202, so as to complete the filtering function of the high-performance optical filter.
Specifically, after a broadband optical signal to be processed enters an input end of the first-stage microdisk optical filter 201 by using the input optical waveguide 100, a through end of the broadband optical signal is subjected to two filtering processes shown as first and second in fig. 3a), after the signal light enters from the left end of the L1 waveguide, the signal light enters the intermediate optical waveguide 301 from the right end of the L1 waveguide through the corresponding through end of the signal light to complete first filtering, and then enters the upper end of the L2 waveguide, the signal light enters the intermediate optical waveguide 302 from the lower end of the L2 waveguide through the corresponding through end of the signal light to complete second filtering; the filtering process of the downloading end is carried out twice in sequence, as shown in the first and the second in the figure 3b), after signal light enters from the left end of the L1 waveguide, the signal light enters the intermediate optical waveguide 301 from the upper end of the L2 waveguide through the corresponding straight-through end to complete the first filtering, and then enters the right end of the L1 waveguide, the signal light enters the intermediate optical waveguide 302 from the lower end of the L2 waveguide through the corresponding straight-through end to complete the second filtering;
the signal light is combined in the middle optical waveguide 302 through the two straight-through end filtering curves and the two downloading end filtering curves after passing through the first stage microdisk optical filter 201, because the distance between the microdisk resonator in the first stage microdisk optical filter 201 and the two straight waveguides is the same, the two filtering functions of the straight-through end and the downloading end in the microdisk filter are ensured, the two filtering functions have the same filtering curve shape and the same resonance peak center wavelength, and the result of the two filtering superposition can generate a spectrum similar to the electromagnetic induction transparent EIT) shown in figure 4a) at the middle optical waveguide 302, and a narrow peak positioned in a groove is arranged in the filtering spectrum;
finally, the signal light in the intermediate optical waveguide 302 enters the second stage microdisk optical filter 202, and since the filter curve at the downstream end of the second stage microdisk optical filter 202 is shown in fig. 4b), the filtering result shown in fig. 4c) is generated at the downstream end and is output through the output optical waveguide 400.
In summary, the embodiment of the invention obtains a high-performance filtering spectrum with low loss, high quality factor and high roll-off rate, and completes the filtering function of the integrated optical filter.
In the embodiment of the present disclosure, the microdisk filter 200 adopts a ridge-like waveguide structure, and a ring of slab waveguides is introduced around the microdisk and the coupling waveguide, so that the optical field distribution of the mode transmitted in the microdisk is far away from the edge of the microdisk, and the optical field is farther away from the edge of the waveguide, thereby reducing the effect of the mode optical field and the side wall of the waveguide, reducing the probability that the mode transmitted clockwise in the microdisk is reflected by the side wall and then forms a standing wave with the clockwise transmission mode, and ensuring that only a single microdisk has a single quality factor value and simultaneously increases the microdisk.
In the specific embodiment of the present disclosure, the center wavelength of the narrow-band optical filter can be tunable by independently tuning the center wavelength of the filter curves of the first and second stage microdisk optical filters 201 and 202.
In the embodiment of the present disclosure, the microdisk filter 200 tunes the center wavelength of the filter curve thereof through the thermo-optic effect or the electro-optic effect.
In the embodiment of the present disclosure, the microdisk filter 200 can be implemented on a lithium niobate, silicon dioxide, indium phosphide, or gallium arsenide platform by a semiconductor process.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
And the shapes and sizes of the respective components in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure. Furthermore, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
The use of ordinal numbers such as "first," "second," "third," etc., in the specification and claims to modify a corresponding element does not by itself connote any ordinal number of the element or any ordering of one element from another or the order of manufacture, and the use of the ordinal numbers is only used to distinguish one element having a certain name from another element having a same name.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A microdisc resonator-based narrowband optical filter comprising:
an input optical waveguide (100) for inputting a broadband optical signal to be processed;
the microdisk optical filter (200) comprises a first stage microdisk optical filter (201) and a second stage microdisk optical filter (202), wherein each stage of microdisk optical filter (201, 202) comprises a microdisk resonant cavity and an input end straight waveguide and a download end straight waveguide which are adjacent to the microdisk resonant cavity, and is used for coupling broadband optical signals into the download end straight waveguide of the microdisk optical filter (201, 202) through the microdisk resonant cavity and outputting broadband optical signals from the download end of the microdisk optical filter (201, 202), i.e. the output end of the download end straight waveguide, when the broadband optical signals meet the resonance condition of the microdisk optical filter (201) after entering the input end of the microdisk optical filter (201, 202), namely the input end straight waveguide and the download end straight waveguide, and broadband optical signal wave bands which do not meet the resonance condition of the microdisk resonant cavity are reserved in the input end straight waveguide and pass through the microdisk optical filter (201, 202), 202) The straight-through end of the input end straight waveguide outputs, so that filtering of an input broadband optical signal is realized;
an intermediate optical waveguide (300) including a first intermediate optical waveguide (301) and a second intermediate optical waveguide (302) for transmitting a broadband optical signal between the microdisk optical filters; the optical filter (200) and the intermediate optical waveguide (300) are arranged in a staggered manner, the input optical waveguide (100) is connected with the input end of an input end straight waveguide L1 of the first stage optical filter (201), the through end of an input end straight waveguide L1 of the first stage optical filter (201) is connected with a first intermediate optical waveguide (301), the first intermediate optical waveguide (301) is connected with a download end straight waveguide L2 of the first stage optical filter (201), the output end of the download end straight waveguide L2 is connected with a second intermediate optical waveguide (302), and the second intermediate optical waveguide (302) is connected with the through end of an input end straight waveguide of the second stage optical filter;
the output optical waveguide (400) is connected with the download end of the second-stage microdisk optical filter (202) and is used for outputting a broadband optical signal passing through the filtering output end of the second-stage microdisk optical filter (202) to complete the filtering function of the narrowband optical filter based on the microdisk resonator;
after the input broadband optical signal passes through a first-stage microdisk filter (201), a straight-through end and an output end are subjected to twice identical filtering processes respectively, and a result of filtering superposition twice generates a spectrum similar to electromagnetic induction transparency; the filtered spectrum has a narrow peak in the notch.
2. The microdisk resonator-based narrowband optical filter according to claim 1, characterized in that the microdisk optical filter (200) employs a ridge-like waveguide structure, introducing a ring of slab waveguides around the microdisk and coupling waveguides.
3. The microdisc resonator-based narrowband optical filter according to claim 1, characterized in that the distance between the microdisc resonator and the two straight waveguides in the first stage microdisc optical filter (201) is the same, so that the two filtering actions of the two optical waves at the through end and the down end in the microdisc filter have the same filtering curve shape and the same resonance peak center wavelength.
4. The microdisk resonator-based narrowband optical filter according to claim 1, characterized in that the radius, waveguide width and waveguide thickness of the microdisk resonators inside both the second stage microdisk filter (202) and the first stage microdisk filter (201) remain the same.
5. The microdisk resonator-based narrowband optical filter according to claim 1, wherein the distance between the microdisk resonator and the straight waveguide in the second stage microdisk optical filter (202) is greater than the distance between the microdisk resonator and the straight waveguide in the first stage microdisk optical filter (201).
6. The microdisc resonator-based narrow-band optical filter according to claim 1, characterized in that the tunability of the optical filter center wavelength is enabled by independent tuning of the center wavelength of the filter curve of the microdisc optical filter (200).
7. The microdisk resonator-based narrowband optical filter according to claim 1, characterized in that the microdisk optical filter (200) is capable of independent tuning of its filter curve center wavelength by thermo-optical or electro-optical effects.
8. The microdisc resonator-based narrow-band optical filter according to claim 1, characterized in that the microdisc optical filter (200) can be fabricated by semiconductor processes on a lithium niobate, silicon dioxide, indium phosphide or gallium arsenide platform.
9. An optical communication device for optical filtering using the microdisc resonator-based narrowband optical filter according to any one of claims 1 to 8.
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| CN111487724B (en) * | 2020-04-27 | 2021-06-01 | 重庆大学 | In-fiber transmission band-pass echo wall micro-cavity filter and manufacturing method thereof |
| CN113466999B (en) * | 2021-07-06 | 2022-10-18 | 中国科学院半导体研究所 | Optical filter and optical communication equipment using same |
| CN113992274B (en) * | 2021-10-12 | 2023-08-29 | 北京理工大学 | Silicon-based integrated high-precision radio frequency signal stable phase transmission chip, transmitting end and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104317068A (en) * | 2014-10-29 | 2015-01-28 | 中国科学院半导体研究所 | Integrated optical filter with center wavelength and filter bandwidth both adjustable independently |
| CN104614877A (en) * | 2015-02-05 | 2015-05-13 | 中国科学院半导体研究所 | Tunable cascading micro-ring filter |
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| AU7601000A (en) * | 1999-09-21 | 2001-04-24 | Nanovation Technologies, Inc. | Wavelength-slicing architecture for wavelength demultiplexing using micro-ring resonators |
| CN102062896B (en) * | 2009-11-11 | 2012-10-03 | 中国科学院半导体研究所 | Silicone-based integrated optical encryption modulator |
| CN101825480B (en) * | 2010-01-29 | 2011-06-08 | 浙江大学 | Broadband light source and cascaded optical waveguide filter-based optical sensor |
| CN106291820B (en) * | 2016-10-13 | 2019-01-25 | 兰州大学 | A kind of silicon-based integrated optical mode data exchange unit |
| CN108759880B (en) * | 2018-04-28 | 2020-05-12 | 中国科学技术大学 | On-chip optical microcavity sensor and optical microcavity coupling waveguide sensing device using same |
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| CN104317068A (en) * | 2014-10-29 | 2015-01-28 | 中国科学院半导体研究所 | Integrated optical filter with center wavelength and filter bandwidth both adjustable independently |
| CN104614877A (en) * | 2015-02-05 | 2015-05-13 | 中国科学院半导体研究所 | Tunable cascading micro-ring filter |
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