CN104678515A - Optical path structure of optical device for single-fiber bidirectional transmission - Google Patents
Optical path structure of optical device for single-fiber bidirectional transmission Download PDFInfo
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- CN104678515A CN104678515A CN201510071725.4A CN201510071725A CN104678515A CN 104678515 A CN104678515 A CN 104678515A CN 201510071725 A CN201510071725 A CN 201510071725A CN 104678515 A CN104678515 A CN 104678515A
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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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
-
- 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
- G02B6/29346—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 operating by wave or beam interference
- G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
- G02B6/29362—Serial cascade of filters or filtering operations, e.g. for a large number of channels
-
- 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
- G02B6/29346—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 operating by wave or beam interference
- G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
- G02B6/29362—Serial cascade of filters or filtering operations, e.g. for a large number of channels
- G02B6/29365—Serial cascade of filters or filtering operations, e.g. for a large number of channels in a multireflection configuration, i.e. beam following a zigzag path between filters or filtering operations
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4215—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses an optical path structure of an optical device for single-fiber bidirectional transmission. A semiconductor laser device array and a detector array are arranged in parallel; optical signals emitted by the semiconductor laser device array are incident into corresponding optical wavelength division filters of a glass body and enter the glass body to form optical ejection transmission; the optical signals of all semiconductor laser devices are multiplexed together and are emergent to one optical wavelength division filter I through a window of the glass body; after passing through the external optical wavelength division filters, the optical signals are focused by a lens into an optical fiber and then are emergent; multiplex light transmitted in the other direction in the optical fiber is incident into the optical wavelength division filter I after passing through the lens and is reflected by the optical wavelength division filter I to a reflection sheet opposite to the optical wavelength division filter and then is reflected again into the glass body, so that ejection is formed in the glass body to realize optical demultiplexing to obtain multiple parallel optical signals which are incident into all of the optical detectors. According to the principle that optical paths are reversible, the optical paths can be independently used in a wavelength division multiplexing optical device or a wavelength demultiplexing optical device.
Description
Technical field
The present invention relates to optical device, fiber optic communication field, wavelength-division optical communication (WDM) network, particularly relate to a kind of optical device light channel structure of the single fiber bi-directional be applied in high speed optical communication device, module and system.
Background technology
Construction from cloud computing, data center, mobile Internet etc. result in the solid demand of world market to broadband, optical communication network have employed the fiber medium of enormous bandwidth resource and excellent transmission performance, can meet the requirement of ever-increasing data service, Internet resources etc.As key core device and the technology of high speed optical fiber communication, develop the emphasis that the optical device that can support 40Gb/s, 100Gb/s and faster transfer rate thereof becomes global development and investment.The transmission capacity how improving simple optical fiber has become very exigence.The solution that current industry adopts is the method utilizing collimating optics, the optical multiplexed signal of relatively low for multichannel transfer rate is used in an optical fiber, 4 road 10Gb/s transfer rates, the optical multiplexed signal with different wave length are used in an optical fiber and are transmitted, or the light signal of 40Gb/s speed is demultiplexed into the 10Gb/s light signal that 4 tunnels have the parallel transmission of different wave length by such as 40Gb/s.Meanwhile, carry out single fiber bi-directional transmission the capacity of simple optical fiber to be doubled.Therefore, how to realize miniaturization, 40Gb/s, 100Gb/s of low cost and the parallel transmission optical device of faster transfer rate and become the most important thing, in these optical devices, the single-fiber-optic two-way wavelength division multiplexing demultiplexing optical device of structure compact to design is one of gordian technique wherein.
Summary of the invention
The object of the invention is to: for the above-mentioned market demand, propose a kind of optical device light channel structure of single fiber bi-directional of novel cramped construction, also can be used for wavelength-division multiplex optical device and Wave Decomposition multiplexed optical device, of the present invention with low cost, technique is simple, is easy to produce in enormous quantities.
Technical scheme of the present invention is:
For the optical device light channel structure of single fiber bi-directional, comprise glass body, catoptron I, catoptron II, light wave divides optical filter I, reflector plate, some light waves divide optical filter II, lens arra I, lens arra II, semiconductor laser array, detector array, coupled lens, coupled fiber, it is characterized in that: catoptron I, catoptron II and some light waves divide optical filter II to be attached to respectively on glass body, place lens arra I between semiconductor laser array and glass body, lens arra II is placed between detector array and glass body, glass body becomes a fixed angle β with the optical axis of semiconductor laser array utilizing emitted light signal, and the formation of this fixed angle is guaranteed that the light signal incided in glass body is formed and photoelasticly penetrated transmission, the number of lasers of semiconductor laser array, the detector quantity sum of detector array are that light wave divides optical filter II quantity, window I place that light wave divides optical filter I to be placed on glass body, and reflector plate is placed on window II place of glass body, beam of laser is divided after optical filter II transmission through light wave corresponding by wavelength with it and is incided glass body, after being attached to the reflection of the catoptron I on glass body another side, secondary reflection is again divided on optical filter II to light wave corresponding to the second bundle laser, to restraint laser multiplexing with being divided second of optical filter II by second light wave, conjunction light after multiplexing incides next light wave and divides reflection on optical filter II after catoptron I reflects, again with by the 3rd light wave divide the three beams of laser of optical filter II multiplexing, until with last a branch of recover with after penetrate from the window I of glass body, the light wave inciding window I place being placed on glass body divides injection on optical filter I, incide after coupled lens in coupled fiber, at other direction, the multiplexed optical penetrated from optical fiber divides optical filter I to reflex to the reflector plate on opposite through light wave, inject from the window II of glass body after reflection, divide after optical filter II through light wave and be demultiplexing as two-way light, one road light divides optical filter II to transmit from light wave, the catoptron II that one road light divides optical filter II to reflex to opposite from light wave, divide on optical filter II to next light wave after catoptron II reflects and be again demultiplexing as two-way light, until last road Optical Demultiplexing is gone out, incide in each detector corresponding to detector array from every road light that each light wave divides optical filter II to transmit through lens arra II.
Described light wave divides filter plate I to be Amici prism; Described reflector plate is total reflection prism, window I place that light wave divides filter plate I to be placed on glass body, and reflector plate is facing to the window II of glass body.
Described catoptron I on glass body and the catoptron II of being attached to is on a face that discrete catoptron is bonded on glass body or on glass body and is coated with reflectance coating.
In described semiconductor laser array, laser instrument number is 4 to 16; In described detector array, detector number is 4 to 16.
The described each light wave be attached on glass body divides optical filter II for bandpass filter, can only by the light of a wavelength in light path.
Described glass body is parallel four limit body vitreums, there are two optical transmission windows in the face being coated with reflectance coating on glass body, or the parallel placement of two parallel four limit body vitreums, there is an optical transmission window in the face being coated with reflectance coating on each parallel four limit body vitreums.
The light transmitted in glass body is directional light or similar directional light.
All change detector array into semiconductor laser array, become recovery optical device light path.
All change semiconductor laser array into detector array, become demultiplexing light path.
Based on light path principle of reversibility, by the light reverse transfer penetrated from optical fiber in light path, the light in above-mentioned light path all enters to inject optical fiber, becomes light multiplexed light.
Based on light path principle of reversibility, will incide the light reverse transfer in optical fiber in light path, the light in above-mentioned light path all penetrates from optical fiber, becomes demultiplexing light path.
Based on light path principle of reversibility, the multiplexed optical penetrated from optical fiber can reverse transfer be multiplexed optical into injecting optical fiber, and the multiplexed optical entering to inject optical fiber can reverse transfer be the multiplexed optical penetrated from optical fiber.
The optical device light channel structure of single fiber bi-directional of the present invention has compact conformation, can be applicable to the high-speed parallel transmission light device of miniaturization, low cost.
Accompanying drawing explanation
Fig. 1 is of the present invention for single-fiber bidirectional optical device light channel structure figure.
Fig. 2 is of the present invention for wavelength-division multiplex optical device light channel structure figure.
Fig. 3 is of the present invention for Wave Decomposition multiplexed optical device light channel structure figure.
Fig. 4 is that another kind of the present invention is for single-fiber bidirectional optical device light channel structure figure.
Fig. 5 is that the light wave be positioned on glass body of the present invention divides filter transmission and wavelength corresponding diagram.
Fig. 6 is that the light wave being positioned at glass body optical transmission window place of the present invention divides filter transmission and wavelength corresponding diagram.
Embodiment
The invention will be further described by reference to the accompanying drawings.
The cramped construction that the present invention proposes is used for multi-wavelength single-fiber bidirectional optical device, Fig. 1 is the design of single-fiber bidirectional optical device light channel structure, comprise: the detector array 110 of semiconductor laser array 109, four detector compositions of four semiconductor laser compositions, catoptron I 112, catoptron II 105, lens arra I 108, lens arra II 111, glass body 107,8 light waves divide optical filter II 106, coupled fiber 101, coupled lens 102, light wave divides optical filter I 103, reflector plate 104;
Semiconductor laser array 109 is that discrete laser instrument equidistantly arranges and forms, the different wave length light signal λ sent
1, λ
2, λ
3, λ
4, incide respectively by lens arra I 108 each light wave be attached on glass body 107 and divide optical filter II 106; There is wavelength X
4light signal incide light wave and divide after on optical filter II 106 and enter in glass body 107, reflect and arrive next light wave through being attached to catoptron I 112 on glass body 107 and divide optical filter II 106, and incide this light wave and divide the λ of the light signal on optical filter II
3closing after light shines on catoptron I 112, arrives next light wave divide optical filter II 106 through reflection, and incides this light wave and divides the λ of the light signal on optical filter
2closing after light shines on catoptron I 112, arrives last light wave divide optical filter II 106 through reflection, and incides this light wave and divides the λ of the light signal on optical filter II
1after closing light, from glass body, the window I of 107 penetrates, and divides after optical filter I 103 through light wave, then incides injection in optical fiber 101 through coupled lens 102, comprises wavelength and be respectively λ in the conjunction light of injection
1, λ
2, λ
3, λ
4;
Multiplexed optical incident from optical fiber 101 comprises wavelength and is respectively λ
5, λ
6, λ
7, λ
8, through the reflector plate 104 that light wave divides optical filter I 103 to reflex to opposite, inject after reflection from glass body 107 window II, divide after optical filter II through light wave and be demultiplexing as two-way light, wavelength is λ
5light divide optical filter II 106 to transmit from light wave, comprise wavelength X
6, λ
7, λ
8the light catoptron II 105 that divides optical filter II 106 to reflex to opposite from light wave, divide on optical filter II 106 to next light wave after catoptron II 105 reflects and be again demultiplexing as two-way light, wavelength is λ
6light divide optical filter II 106 to transmit from light wave, comprise wavelength X
7, λ
8light divide optical filtering II 106 to reflex to the catoptron II 105 on opposite from light wave, to divide on optical filter II 106 to next light wave after catoptron II 105 reflects and be again demultiplexing as two-way light, wavelength is λ
7light divide optical filter II 106 to transmit from light wave, wavelength X
8the light catoptron II 105 that divides optical filter II 106 to reflex to opposite from light wave, divide on optical filter II 106 to next light wave after catoptron II 105 reflects and transmit.Incide in each detector of detector array 110 correspondence from every road light that light wave divides optical filter II 106 to transmit through lens arra 111.
Fig. 5 is transmissivity and the wavelength relationship corresponding diagram that 8 light waves in Fig. 1 divide optical filter II 106, and each light wave wherein divides the light of an optical filter transmission wavelength, extremely low to the light transmission of other wavelength, passes through in order to stop the light of other wavelength.
Fig. 6 is transmissivity and the wavelength relationship corresponding diagram that light wave in Fig. 1 divides optical filter I 103, and light wave divides the light of optical filter I 103 transmission four wavelength, extremely low to the light transmission of other four wavelength, passes through in order to stop the light of other four wavelength.
Based on light principle of reversibility, by the light reverse transfer penetrated from optical fiber in light path, the light in above-mentioned light path all enters to inject optical fiber, becomes eight road light multiplexed light.As shown in Figure 2, all change detector array into semiconductor laser array 109, become recovery optical device light path.
Based on light path principle of reversibility, will incide the light reverse transfer in optical fiber in light path, the light in above-mentioned light path all penetrates from optical fiber, becomes demultiplexing light path.As shown in Figure 3, all change semiconductor laser array into detector array 110, become demultiplexing light path.
Based on light path principle of reversibility, the multiplexed optical penetrated from optical fiber can reverse transfer be multiplexed optical into injecting optical fiber, and the multiplexed optical entering to inject optical fiber can reverse transfer be the multiplexed optical penetrated from optical fiber.Fig. 4 is that the position that the detector array 110 of semiconductor laser array 109, four the detectors compositions formed except four semiconductor lasers for the structure of optical device light channel structure figure and Fig. 1 of another kind of multi-wavelength single fiber bi-directional is placed is exchanged, and other structure is consistent with Fig. 1.
The multi-wavelength single-fiber bidirectional optical device of the Novel compact structure that the present invention proposes, uses in an optical fiber by the wavelength-division optical multiplexed signal of 4 road 10Gb/s parallel transmissions, forms the optical transport application of 40Gb/s.With this optical fiber, the other 4 road 10Gb/s transmitted are demultiplexed in 4 photo-detectors simultaneously, reach the function that simple optical fiber transmits two-way 40Gb/s light signal.Greatly improve the transmission capacity of simple optical fiber.Whole technological process is simple, low to process equipment accuracy requirement, is easy to actual production.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. for the optical device light channel structure of single fiber bi-directional, comprise glass body, catoptron I, catoptron II, light wave divides optical filter I, reflector plate, some light waves divide optical filter II, lens arra I, lens arra II, semiconductor laser array, detector array, coupled lens, coupled fiber, it is characterized in that: catoptron I, catoptron II and some light waves divide optical filter II to be attached to respectively on glass body, place lens arra I between semiconductor laser array and glass body, lens arra II is placed between detector array and glass body, glass body becomes a fixed angle β with the optical axis of semiconductor laser array utilizing emitted light signal, and the formation of this fixed angle is guaranteed that the light signal incided in glass body is formed and photoelasticly penetrated transmission, the number of lasers of semiconductor laser array, the detector quantity sum of detector array are that light wave divides optical filter II quantity, window I place that light wave divides optical filter I to be placed on glass body, and reflector plate is placed on window II place of glass body, beam of laser is divided after optical filter II transmission through light wave corresponding by wavelength with it and is incided glass body, after being attached to the reflection of the catoptron I on glass body another side, secondary reflection is again divided on optical filter II to light wave corresponding to the second bundle laser, to restraint laser multiplexing with being divided second of optical filter II by second light wave, conjunction light after multiplexing incides next light wave and divides reflection on optical filter II after catoptron I reflects, again with by the 3rd light wave divide the three beams of laser of optical filter II multiplexing, until with last a branch of recover with after penetrate from the window I of glass body, the light wave inciding window I place being placed on glass body divides injection on optical filter I, incide after coupled lens in coupled fiber, at other direction, the multiplexed optical penetrated from optical fiber divides optical filter I to reflex to the reflector plate on opposite through light wave, inject from the window II of glass body after reflection, divide after optical filter II through light wave and be demultiplexing as two-way light, one road light divides optical filter II to transmit from light wave, the catoptron II that one road light divides optical filter II to reflex to opposite from light wave, divide on optical filter II to next light wave after catoptron II reflects and be again demultiplexing as two-way light, until last road Optical Demultiplexing is gone out, incide in each detector corresponding to detector array from every road light that each light wave divides optical filter II to transmit through lens arra II.
2. the optical device light channel structure for single fiber bi-directional according to claim 1, is characterized in that: described light wave divides filter plate I to be Amici prism; Described reflector plate is total reflection prism, window I place that light wave divides filter plate I to be placed on glass body, and reflector plate is facing to the window II of glass body.
3. the optical device light channel structure for single fiber bi-directional according to claim 1, is characterized in that: described catoptron I on glass body and the catoptron II of being attached to is on a face that discrete catoptron is bonded on glass body or on glass body and is coated with reflectance coating.
4. the optical device light channel structure for single fiber bi-directional according to claim 1, is characterized in that: in described semiconductor laser array, laser instrument number is 4 to 16; In described detector array, detector number is 4 to 16.
5. the optical device light channel structure for single fiber bi-directional according to claim 1, is characterized in that: the described each light wave be attached on glass body divides optical filter II for bandpass filter, can only by the light of a wavelength in light path.
6. the optical device light channel structure for single fiber bi-directional according to claim 1, it is characterized in that: described glass body is parallel four limit body vitreums, there are two optical transmission windows in the face being coated with reflectance coating on glass body, or the parallel placement of two parallel four limit body vitreums, there is an optical transmission window in the face being coated with reflectance coating on each parallel four limit body vitreums.
7. the optical device light channel structure for single fiber bi-directional according to claim 1, is characterized in that: the light transmitted in glass body is directional light.
8. the optical device light channel structure for single fiber bi-directional according to claim 1, is characterized in that: all change detector array into semiconductor laser array, becomes recovery optical device light path.
9. the optical device light channel structure for single fiber bi-directional according to claim 1, is characterized in that: all change semiconductor laser array into detector array, becomes demultiplexing light path.
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| CN105572818A (en) * | 2015-12-29 | 2016-05-11 | 江苏奥雷光电有限公司 | Multichannel parallel light emitting device and multi-mode long-distance transmission system |
| CN105739023A (en) * | 2016-03-18 | 2016-07-06 | 苏州伽蓝致远电子科技股份有限公司 | Low-loss compact multichannel light wavelength division multiplexer with one light emergent end |
| CN105739025A (en) * | 2016-03-18 | 2016-07-06 | 苏州伽蓝致远电子科技股份有限公司 | Three-dimensional compact multichannel light wavelength division multiplexer with one light emergent end |
| CN106603153A (en) * | 2015-10-14 | 2017-04-26 | 苏州旭创科技有限公司 | Optical wave separator/combiner device |
| WO2018170828A1 (en) * | 2017-03-23 | 2018-09-27 | 华为技术有限公司 | Bidirectional optical assembly, optical network unit, optical line terminal, and passive optical network system |
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