CN1750446A - Light split plug multiplex device - Google Patents
Light split plug multiplex device Download PDFInfo
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- CN1750446A CN1750446A CN 200410009560 CN200410009560A CN1750446A CN 1750446 A CN1750446 A CN 1750446A CN 200410009560 CN200410009560 CN 200410009560 CN 200410009560 A CN200410009560 A CN 200410009560A CN 1750446 A CN1750446 A CN 1750446A
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- micro mirror
- optical switch
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Abstract
This invention provides an optical add-drop multiplexer (OADM) including an OADM, ports of input and output and ports of up path and down path, among which, the OADM is in the array of several MEMS optical switches composed of a microlens and a driving device, the microlens is a multiple medium film filter laminated alternately by multiplayer films with high or low refractive rates, only a specific wavelength is reflected while others are transmitted when the multiplex wavelength radiates the microlens. When the driving device starts the microlens related to the specific wavelength on MEMS optical switch array, the up and down paths of said specific wavelength in WDM signals can be realized.
Description
Technical field
The invention belongs to technical field of optical fiber communication, be specifically related to a kind of optical add/drop multiplexer (OADM:Opticaladd/drop multiplexer).
Background technology
Dense wave division multipurpose (DWDM) optical communication network has become the trend of present communication network development owing to have clear superiorities such as two-forty, big bandwidth.OADM is one of core devices that constitutes the DWDM all optical network, major function is that selectable road (drop) down leads to local light signal from transmission equipment, (add) local user that sets out on a journey is simultaneously mail to the light signal of another node users, and does not influence the transmission of other wavelength channels.Optical add/drop multiplexer has been finished the function of exchange that former cause electricity switching equipment is finished in the light territory, overcome the electronic bottleneck of light one electric light conversion, made fiber optic communication network have superior functionalitys such as flexibility, selectivity, the transparency, extensibility and reconfigurability.And, utilize OADM can also improve the reliability of optical-fiber network, reduce the node cost, improve network operation efficient.Therefore, OADM becomes one of key technology of setting up the DWDM all optical network.
At present, the scheme of realization OADM mainly contains following several: based on demultiplexing/multiplexing structure, based on the Fiber Bragg Grating FBG structure, based on the fiber optical circulator structure, based on sound one optic tunable filter structure.Wherein, have good development prospect, become the focus of Recent study based on the OADM of demultiplexing/multiplexing structure.
Summary of the invention
The present invention is based on the research of demultiplexing/multiplexing structure OADM, provide a kind of control simple, cost is low, insert that loss is little, channel isolation is high, simple and compact for structure, be easy to integrated OADM, this OADM is insensitive to incident light polarization, need not independent demultiplexing/multiplexer.
Technology contents of the present invention: a kind of optical add/drop multiplexer, comprise the optical add/drop multiplexer body, input, output port and setting out on a journey, following road port, wavelength-division multiplex signals is finished the function of exchange of setting out on a journey or descending the road by the optical add/drop multiplexer body, it is characterized in that: the optical add/drop multiplexer body mems optical switch array that several mems optical switches are formed of serving as reasons, mems optical switch is made up of micro mirror and drive unit, micro mirror is a multilayer thin-film-filter, it is by the multilayer height, the low-index material film is superimposed and forms, when reuse wavelengths is mapped on the micro mirror, have only a certain wavelengths to be reflected, the whole transmissions of its commplementary wave length, when drive unit is opened on the mems optical switch array with the corresponding micro mirror of specific wavelength, can realize setting out on a journey or road down to this specific wavelength in the wavelength-division multiplex signals.
The array of mems optical switch can be a plurality of mems optical switches and is in line.
The array of mems optical switch can be the mems optical switch matrix of multiple lines and multiple rows, and during wherein delegation or any was listed as arbitrarily, the reflection wavelength of each multilayer thin-film-filter micro mirror did not repeat.
Described drive unit can be mems optical switch drive unit arbitrarily, drives or the miniatured hinge driving as comb-shaped cross electrodes.
Technique effect of the present invention: because mems optical switch has that volume is little, in light weight, low in energy consumption, precision is high, response speed is fast, easily integrated on a large scale, insert that loss is low, polarization sensitivity is low, irrelevant with the form of light signal and agreement etc., extinction ratio is high, cost is low and make series of advantages such as easy, and is simple based on the OADM control that the mems optical switch array constitutes, cost is low,, compact conformation irrelevant with the form of signal, agreement etc., be easy to integrated and encapsulate.And replace the micro mirror of common completely reflecting mirror with multilayer thin-film-filter, can realize wavelength selectivity, make OADM of the present invention need not independent demultiplexing/multiplexer as mems optical switch, reduced the insertion loss, simplified device architecture, the channel isolation height, insensitive to incident light polarization.
Description of drawings
Below in conjunction with accompanying drawing, the present invention is made detailed description.
Fig. 1 is the structural representation of optical add/drop multiplexer of the present invention;
Fig. 2 is a multilayer thin-film-filter operation principle schematic diagram;
Fig. 3 is the structural representation of miniatured hinge driven MEMS optical switch;
Fig. 4 is the structural representation of the slidingtype mems optical switch of comb-shaped cross electrodes driving;
Fig. 5 is the structural representation based on the multichannel optical add/drop multiplexer of mems optical switch.
Embodiment
OADM structure of the present invention as shown in Figure 1.This optical add/drop multiplexer comprises: input port, following road port D
x(x=1,2,3,, n), go up road port A
x(x=1,2,3,, n), output port and by n mems optical switch (M
1, M
2, M
3,, M
n) the mems optical switch array formed, what wherein mems optical switch adopted is two-dimentional micro-mirror structure, micro mirror is a multilayer thin-film-filter, it is superimposed by multilayer high and low refractive index material film and forms, when reuse wavelengths is mapped on the micro mirror, utilize interference effect, have only a certain wavelengths to be reflected, the whole transmissions of its commplementary wave length have wavelength selectivity.
Multilayer thin-film-filter of the present invention is the highly reflecting films to a certain wavelength, constitutes by two kinds of thin-film materials with high and low refractive index are alternate, and its operation principle as shown in Figure 2.Suppose that reflection wavelength is λ, the thickness d of the appropriate every layer film of selection multilayer dielectric film
1, d
2, make free space wavelength be the light of light of λ from each boundary reflection of multilayer dielectric film to front surface all to be that homophase is relevant strengthen, thereby realize high anti-to the λ wavelength.It is big more that the refractive index of two kinds of materials differs, and the number of plies is many more, and the reflectivity of multilayer dielectric film is high more.When multiplexing wavelength paraxonic is mapped on the multilayer thin-film-filter, have only a certain wavelengths to be reflected, the then transmission of its commplementary wave length.Reflecting a needed multilayer thin-film-filter of wavelength while its commplementary wave length of transmission can realize in technology.In manufacturing process, can control different reflection wavelengths by the thickness of regulating adjacent films or the film of selecting different materials.
Micro mirror has only two states: " ON " state and " OFF " state.When optical switch was in " ON " state, micro mirror contacted with incident light and the generation effect; When being in " OFF " state, micro mirror and incident light are contactless, therefore cut little ice.Drive micro mirror by drive unit, can change its state.The type of drive of mems optical switch mainly contains the parallel plate capacitor static driven, and the pectination electrostatic actuator drives, and electricity causes, magnetostriction drives, and the deformation memorial alloy drives, and luminous power drives, heat driving etc.The type of drive of mems optical switch can be any one among the present invention.Fig. 3 and Fig. 4 have provided two kinds of typical type of drive respectively.Fig. 3 is a miniatured hinge driven MEMS optical switch schematic diagram, and optical switch mainly comprises: micro mirror 1, base 2, slide bar 3 and miniatured hinge 4.Under the driving action of slide bar 3 and miniatured hinge 4, micro mirror 1 can be from base 2 surperficial liftings.When not adding driving voltage, micro mirror 1 is parallel with base 2 surfaces, is in " OFF " state; Add after the driving voltage, micro mirror 1 is in " ON " state from base 2 surperficial liftings.Fig. 4 is the slidingtype mems optical switch drive unit schematic diagram that comb-shaped cross electrodes drives, and optical switch mainly comprises: micro mirror 1, overarm 5 and comb-shaped cross electrodes driver 6, micro mirror 1 is fixed in the movable overarm 5.During nature, micro mirror 1 is in " ON " state, and incident light is selectively reflected; After comb-shaped cross electrodes driver 6 added driving voltage, comb-shaped cross electrodes produced static, and electrostatic force makes overarm 5 produce parallel moving on the direction of power, drives micro mirror 1 and draws back, and makes it be in " OFF " state, no longer reverberation.
With reference to figure 1, wavelength-division multiplex signals is directly inputted to the array of 1 * n mems optical switch, by the state (" ON " or " OFF ") of driving device controls mems optical switch, realizes needing the upper and lower road of wavelength.N micro mirror reflection wavelength is followed successively by λ
1, λ
2, λ
3λ
nComprise wavelength X
1, λ
2, λ
3λ
nRoad wavelength division multiplexing (WDM) signal by input port incident, if λ wherein
x(x=1,2,3,, n) road under the quilt, local signal is with λ simultaneously
xWavelength is set out on a journey, and needing only by the driving device controls reflection wavelength is λ
xMicro mirror M
xBe in " ON " state, all the other micro mirrors all keep " OFF " state to get final product.At the M that is in " ON " state
xUnder the effect of micro mirror, desire the quilt λ on road down in the WDM signal of input
xWavelength is reflected to down road port and realizes road down, and this micro mirror that passes through that all the other n-1 wavelength is then transparent arrives output port; Because the multilayer thin-film-filter micro mirror is a double-sided reflecting, the local signal of desiring to set out on a journey is with wavelength X
xBy last road port incident, equally at micro mirror M
xEffect under, be reflected to output port, with the synthetic new WDM signal of remaining n-1 road signal.Be in " ON " state with seasonal a plurality of micro mirrors, then can realize the road up and down of a plurality of wavelength simultaneously.As seen, as long as the state by the driving device controls micro mirror, make with the corresponding micro mirror of road wavelength up and down to be in " ON " state, all the other micro mirrors are in " OFF " state, just can control down the output wavelength of road port and output port, realize setting out on a journey and the function on road down.In addition, when the micro mirror in 1 * n mems optical switch all was in " ON " state, OADM of the present invention can also serve as multiplexer and demodulation multiplexer.
Mems optical switch described in the present invention is carried out appropriate arrangement, form the mems optical switch array of a multiple lines and multiple rows, the wavelength that can realize n road WDM signal simultaneously is the road function up and down, and structure as shown in Figure 5.The arrangement principle of mems optical switch is that the reflection wavelength of each multilayer thin-film-filter micro mirror can not have repetition in delegation or any is listed as arbitrarily in the mems optical switch array.The arrangement mode that we taked is the micro mirror M of first row
11, M
12..., M
1nReflection wavelength is followed successively by λ
1, λ
2..., λ
n, the micro mirror of all the other each row is identical with the reflection wavelength of the first row micro mirror, but need place according to the cyclic shift of the first row micro mirror.The OADM of n of the present invention road WDM signal can regard n separate OADM as, does not disturb mutually between each road WDM signal, finishes road up and down simultaneously, the efficient height.
OADM of the present invention need not independent demultiplexing/multiplexer, has reduced the insertion loss, has simplified device architecture, the channel isolation height, insensitive to incident light polarization, irrelevant with the form of signal, agreement etc., control is simple, cost is low, and compact conformation is easy to integrated and encapsulation.
Claims (5)
1, a kind of optical add/drop multiplexer, comprise the optical add/drop multiplexer body, input, output port and setting out on a journey, following road port, it is characterized in that: the optical add/drop multiplexer body mems optical switch array that several mems optical switches are formed of serving as reasons, mems optical switch is made up of micro mirror and drive unit, micro mirror is a multilayer thin-film-filter, it is by the multilayer height, the low-index material film is superimposed and forms, when reuse wavelengths is mapped on the micro mirror, have only a certain wavelengths to be reflected, the whole transmissions of its commplementary wave length, when drive unit open on the mems optical switch array with the corresponding micro mirror of specific wavelength the time, can realize setting out on a journey or road down to this specific wavelength in the wavelength-division multiplex signals.
2, optical add/drop multiplexer as claimed in claim 1 is characterized in that: the array of mems optical switch is that a plurality of mems optical switches are in line.
3, optical add/drop multiplexer as claimed in claim 1 is characterized in that: the array of mems optical switch is the mems optical switch matrix of multiple lines and multiple rows, and during wherein delegation or any was listed as arbitrarily, the reflection wavelength of each multilayer thin-film-filter micro mirror did not repeat.
4, as claim 1,2 or 3 described optical add/drop multiplexers, it is characterized in that: described drive unit is that comb-shaped cross electrodes drives.
5, as claim 1,2 or 3 described optical add/drop multiplexers, it is characterized in that: described drive unit is that miniatured hinge drives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410009560 CN1750446A (en) | 2004-09-15 | 2004-09-15 | Light split plug multiplex device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410009560 CN1750446A (en) | 2004-09-15 | 2004-09-15 | Light split plug multiplex device |
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|---|---|
| CN1750446A true CN1750446A (en) | 2006-03-22 |
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|---|---|---|---|
| CN 200410009560 Pending CN1750446A (en) | 2004-09-15 | 2004-09-15 | Light split plug multiplex device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105898628A (en) * | 2016-05-09 | 2016-08-24 | 长春理工大学 | Space-borne all-optical multi-channel up-down routing system |
| CN106950708A (en) * | 2016-01-07 | 2017-07-14 | 苏州旭创科技有限公司 | Optical couplers, WDM, dual-wavelength part |
| CN107355730A (en) * | 2017-07-17 | 2017-11-17 | 上海小糸车灯有限公司 | Car light MEMS intelligent illuminating systems, vehicle lamp assembly and automobile |
| CN108496315A (en) * | 2016-07-22 | 2018-09-04 | 华为技术有限公司 | A kind of optical add/drop multiplexer and its control method, transceiver |
| CN109814208A (en) * | 2019-03-29 | 2019-05-28 | 衡东光通讯技术（深圳）有限公司 | A kind of wavelength-selective switches, Wavelength selecting method and optical cross connection device |
| CN111279236A (en) * | 2017-10-12 | 2020-06-12 | 卢克斯特拉有限公司 | Method and system for eliminating polarization dependence of 45 degree incident MUX/DEMUX design |
-
2004
- 2004-09-15 CN CN 200410009560 patent/CN1750446A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950708A (en) * | 2016-01-07 | 2017-07-14 | 苏州旭创科技有限公司 | Optical couplers, WDM, dual-wavelength part |
| CN105898628A (en) * | 2016-05-09 | 2016-08-24 | 长春理工大学 | Space-borne all-optical multi-channel up-down routing system |
| CN105898628B (en) * | 2016-05-09 | 2019-02-22 | 长春理工大学 | Route system above and below spaceborne full optical multichannel |
| CN108496315A (en) * | 2016-07-22 | 2018-09-04 | 华为技术有限公司 | A kind of optical add/drop multiplexer and its control method, transceiver |
| US10484122B2 (en) | 2016-07-22 | 2019-11-19 | Huawei Technologies Co., Ltd. | Optical add/drop multiplexer and control method thereof, and transceiver |
| CN108496315B (en) * | 2016-07-22 | 2019-11-22 | 华为技术有限公司 | A kind of optical add/drop multiplexer and its control method, transceiver |
| CN107355730A (en) * | 2017-07-17 | 2017-11-17 | 上海小糸车灯有限公司 | Car light MEMS intelligent illuminating systems, vehicle lamp assembly and automobile |
| CN111279236A (en) * | 2017-10-12 | 2020-06-12 | 卢克斯特拉有限公司 | Method and system for eliminating polarization dependence of 45 degree incident MUX/DEMUX design |
| CN109814208A (en) * | 2019-03-29 | 2019-05-28 | 衡东光通讯技术（深圳）有限公司 | A kind of wavelength-selective switches, Wavelength selecting method and optical cross connection device |
| CN109814208B (en) * | 2019-03-29 | 2023-07-14 | 蘅东光通讯技术(深圳)股份有限公司 | Wavelength selection switch, wavelength selection method and optical cross-connect device |
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