CN109164544A - A kind of ROF optical device packaging method based on CWDM - Google Patents
A kind of ROF optical device packaging method based on CWDM Download PDFInfo
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- CN109164544A CN109164544A CN201811091424.8A CN201811091424A CN109164544A CN 109164544 A CN109164544 A CN 109164544A CN 201811091424 A CN201811091424 A CN 201811091424A CN 109164544 A CN109164544 A CN 109164544A
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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
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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
- 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
-
- 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
- G02B6/43—Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
Abstract
The invention belongs to technical field of photo communication, specifically provide a kind of ROF optical device packaging method based on CWDM, by the way that different filter plates is arranged in optical path, the optical carrier of the corresponding wavelength of each filter plate, the filter plate can only reflect the light of corresponding wavelength and transmit the light of other wavelength, different wave length multiplex is carried out to optical carrier with reflection using the transmission of filter plate in transmitting terminal and is transmitted, different wave length partial wave is carried out to optical carrier with reflection using the transmission of filter plate in receiving end and is coupled to receive, realize multi-wavelength light carrier radio communication, to increase the bandwidth of single channel transmission, improve efficiency of transmission, reduce transmission cost.
Description
Technical field
The invention belongs to technical field of photo communication, and in particular to a kind of ROF optical device packaging method based on CWDM.
Background technique
Light carrier radio communication, that is, ROF (radio-over-fiber) technology is to answer high-speed high capacity wireless communication needs, newly
The emerging wireless access technology for combining fiber optic communication and wireless communication to grow up.Briefly being exactly will in central station
Microwave is modulated on laser, and modulated light wave is transmitted by complicated optical fiber link later, and after reaching base station, photoelectricity turns
Microwave signal of changing commanders demodulation, then for users to use by antenna transmitting.
Coarse wavelength division multiplexing, that is, CWDM (Wavelength Division Multiplexer) is a kind of towards Metropolitan Area Network (MAN) access
Inexpensive wavelength-division multiplex, that is, WDM transmission technology of layer, wave division multiplexing WDM (Wavelength Division Multiplexing)
Be by the optical carrier (carrying various information) of two or more different wave lengths transmitting terminal through multiplexer (also known as wave multiplexer,
Multiplexer it) merges together, and is coupled to the technology transmitted in the same root optical fiber of optical link；In receiving end, warp
Demultiplexer (also known as channel-splitting filter or demultiplexer, Demultiplexer) separates the light carrier of various wavelength, then by light
Receiver is for further processing to restore original signal.This simultaneous transmission in same root optical fiber two or numerous different wavelengths of light
The technology of signal, referred to as wavelength-division multiplex.It is, in principle, that CWDM is exactly to be multiplexed the optical signal of different wave length using optical multiplexer
It is transmitted to simple optical fiber, in the receiving end of link, the mixed signal in optical fiber is decomposed into difference by optical demultiplexer
The signal of wavelength is connected to corresponding equipment.
ROF technology is a kind of emerging technology, it is therefore an objective to meet high-speed high capacity wireless communication needs, be a kind of by optic communication
The wireless access technology combined with wireless communication.Relative to simple wireless communication technique, ROF has loss low, at low cost
And advantages of simple structure and simple.ROF is mainly that unicast realizes light carrier radio communication at present, has narrower bandwidth, and efficiency of transmission is not high,
The defects of volume is larger.
Summary of the invention
The purpose of the present invention is overcome the problems, such as the narrow bandwidth and low efficiency of ROF in the prior art.
For this purpose, the present invention provides a kind of ROF optical device packaging method based on CWDM, comprising the following steps:
Transmitting terminal group emit respectively different wave length be λ 1, λ 2, λ 3 ..., λ n-1, λ n multi beam optical carrier and pass through
Be converted to after one-to-one parallel light lens B1, B2, B3 ..., Bn-1, Bn corresponding more incident directional light L1, L2,
L3……,Ln-1,Ln；
Described incident parallel light L1, L2, L3 ..., Ln-1, Ln pass through one-to-one filter plate F1, filter plate respectively
Corresponding multi beam reflected light R1, R2, R3 ..., Rn-1, Rn are formed after F2, filter plate F3 ... filter plate Fn；
Described reflected light R1, R2, R3 ..., Rn-1, Rn pass through parallel light lens A and form transmitting multiplex；
The transmitting multiplex filter plate F1 ' by receiving end group, filter plate F2 ', filter plate F3 ' ... filter plate respectively
It is converted to corresponding multi beam using one-to-one parallel light lens B1, B2, B3 ..., Bn-1, Bn after Fn ' reflection and receives and divide
Wave G1, G2, G3 ..., Gn-1, Gn；
Wherein, n is positive integer.
Preferably, the filter plate F2, filter plate F3 ... filter plate Fn are sequentially located at the reflected light of the reflected light R1
It on the road, and by the transmission light that the filter plate F2, filter plate F3 ... filter plate Fn are formed is directional light.
Preferably, the reception formed by filter plate Fn ', filter plate F3 ' ... filter plate F2 ', filter plate F1 ' is saturating
Penetrating light is directional light.
Preferably, when different wavelengths of light passes through filter plate, the filter plate reflects corresponding wavelength light, and
Other wavelength lights are transmitted.
Preferably, the filter plate is 45 ° of diaphragms, and 45 ° of diaphragms and incident light are at 45 °.
Preferably, the transmitting multiplex passes through filter plate F1 ', filter plate F2 ', filter plate F3 ... filter plate Fn ' respectively
Reflected after reflection using reflectance coating, after reflectance coating reflects using one-to-one parallel light lens B1, B2,
B3 ..., Bn-1, Bn are converted to corresponding multi beam and receive partial wave G1, G2, G3 ..., Gn-1, Gn.
Preferably, parallel light lens B1, B2, B3 ..., Bn-1, Bn of the transmitting terminal group are respectively positioned in a plane.
Preferably, at least one directional light is saturating in parallel light lens B1, B2, B3 ..., Bn-1, Bn of the transmitting terminal group
Mirror is vertical with other parallel light lens.
Beneficial effects of the present invention: this ROF optical device packaging method based on CWDM provided by the invention, by
Different filter plates is set in optical path, and the optical carrier of the corresponding wavelength of each filter plate, the filter plate can only reflect pair
It answers the light of wavelength and transmits the light of other wavelength, optical carrier is carried out not using the transmission of filter plate and reflection in transmitting terminal
Co-wavelength multiplex is simultaneously transmitted, receiving end using filter plate transmission and reflection to optical carrier carry out different wave length partial wave and
It is coupled to receive, realizes multi-wavelength light carrier radio communication, to increase the bandwidth of single channel transmission, improve efficiency of transmission, drop
Low transmission cost.
The present invention is described in further details below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is the flow diagram of the ROF optical device packaging method the present invention is based on CWDM；
Fig. 2 is the schematic diagram of one embodiment of transmitting terminal of the ROF optical device packaging method the present invention is based on CWDM；
Fig. 3 is the schematic diagram of the transmitting terminal another embodiment of the ROF optical device packaging method the present invention is based on CWDM；
Fig. 4 is the schematic diagram of one embodiment of receiving end of the ROF optical device packaging method the present invention is based on CWDM.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features；In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or
It is more than two.
Embodiment 1:
The ROF optical device packaging method based on CWDM that the embodiment of the invention provides a kind of, comprising the following steps:
Transmitting terminal group emit respectively different wave length be λ 1, λ 2, λ 3 ..., λ n-1, λ n multi beam optical carrier and pass through
Be converted to after one-to-one parallel light lens B1, B2, B3 ..., Bn-1, Bn corresponding more incident directional light L1, L2,
L3……,Ln-1,Ln；
Described incident parallel light L1, L2, L3 ..., Ln-1, Ln pass through one-to-one filter plate F1, filter plate respectively
Corresponding multi beam reflected light R1, R2, R3 ..., Rn-1, Rn are formed after F2, filter plate F3 ... filter plate Fn；
Described reflected light R1, R2, R3 ..., Rn-1, Rn pass through parallel light lens A and form transmitting multiplex；
Receiving end group receives the transmitting multiplex and respectively respectively by filter plate F1 ', filter plate F2 ', filter plate
It is converted to accordingly after F3 ' ... filter plate Fn ' reflection by one-to-one parallel light lens B1, B2, B3 ..., Bn-1, Bn
Multi beam receive partial wave G1, G2, G3 ..., Gn-1, Gn.
Wherein, n is the positive integer not less than 1.
It follows that as shown in Figures 1 to 4, transmitting terminal group is equipped with multiple transmitting terminals, different transmitting terminals emit difference respectively
Wavelength is the multi beam optical carrier of λ 1, λ 2, λ 3 ..., λ n-1, λ n, and every beam optical carrier passes through corresponding directional light respectively
Be converted to after B lens (i.e. parallel light lens B1, B2, B3 ..., Bn-1, Bn) corresponding more incident directional light L1, L2,
L3 ..., Ln-1, Ln, it is (i.e. parallel that every beam incident parallel light enters directional light A lens after the reflection of corresponding filter plate
Optical lens A), transmitting multiplex is formed after directional light A lens, multiplex enters receiving end group, and receiving end group receives institute respectively
State transmitting multiplex and respectively after filter plate F1 ', filter plate F2 ', filter plate F3 ... filter plate Fn ' reflection by an a pair
Parallel light lens B1, B2, B3 ..., Bn-1, the Bn answered be converted to corresponding multi beam receive partial wave G1, G2, G3 ..., Gn-1,
Gn has so obtained the partial wave of different wave length.
Wherein, receiving end is mainly to carry out different wave length partial wave using the transmission and reflection of filter plate, utilizes directional light original
Reason is optically coupled, and is implemented as multiplex λ 1, λ 2, λ 3 ..., λ n-1, λ n through directional light A lens and is switched to directional light, is passed through
Filter plate Fn, by λ n reflection, other wavelength transmissions, λ n enters directional light B lens through reflection diaphragm n, and directional light switchs to converge
Light carries out receiving end coupling, other similar partial waves that other each wavelength are done step-by-step and is coupled to receive.
Preferably, the filter plate F2, filter plate F3 filter plate Fn are sequentially located on the reflected light path of the reflected light R1,
And the transmission light by the filter plate F2, filter plate F3 ... filter plate Fn formation is directional light.It follows that transmitting
It brings out the optical carrier come to be respectively radiated on corresponding filter plate, the reflected light R1 reflected from filter plate F1 passes through filter plate
F2 is transmitted away, from the filter plate F2 reflected light R2 reflected the and reflected light R1 that transmits together using filter plate F3, according to
Secondary such transmission is gone down, the optical carrier of each corresponding filter plate reflection respective wavelength, and saturating to the light of other wavelength
It penetrates.Specifically, transmitting terminal be mainly using filter plate transmission and transmitting carry out different wave length multiplex, using directional light principle into
Row optical coupling is implemented as wavelength X 1 by directional light B lens and is converted to directional light, reflects through filter plate F1, through filter plate
F2 ..., filter plate Fn-1, filter plate Fn transmission, converged via directional light A lens, further realize coupling；It is similar
λ 2, λ 3 ..., λ n-1, λ n realize multiplex, coupling firing.Realize multiplexing i.e. multiplex, the coupling firing of optical transport.
Preferably, the filter plate Fn ', filter plate F3 ' ... filter plate F2 ', filter plate F1 ' are sequentially located at the transmitting
On the receiving light path of multiplex, and it is described by filter plate Fn ', filter plate F3 ... filter plate F2 ', filter plate F1 ' formed connect
Receipts transmitted light is directional light.It follows that as shown in figure 4, receiving end is mainly to be carried out not using the transmission and reflection of filter plate
Co-wavelength partial wave is optically coupled using directional light principle, is implemented as multiplex λ 1, λ 2, λ 3 ..., λ n-1, λ n through parallel
Light A lens switchs to directional light, and by filter plate Fn, by λ n reflection, other wavelength transmissions, λ n enters directional light through reflection diaphragm n
B lens, directional light switch to converged light, carry out receiving end coupling, other similar partial waves and coupling that other each wavelength are done step-by-step
Splice grafting is received.
Preferably scheme, the filter plate are 45 ° of diaphragms, and 45 ° of diaphragms and incident light are at 45 °.It follows that 45 °
The reflecting effect and transmission effects of diaphragm are more preferable.
Preferably scheme, the transmitting multiplex pass through filter plate F1 ', filter plate F2 ', filter plate F3 ... filter plate respectively
It reflects after Fn ' reflection by reflectance coating, then turns using one-to-one parallel light lens B1, B2, B3 ..., Bn-1, Bn
It is changed to corresponding multi beam and receives partial wave G1, G2, G3 ..., Gn-1, Gn.
Preferably scheme, parallel light lens B1, B2, B3 ..., Bn-1, Bn of the transmitting terminal group are respectively positioned on a plane
On.As shown in Fig. 2, the launch scenario is A scheme, transmitting terminal is mainly to carry out different wave length using the transmission and transmitting of filter plate
Multiplex is optically coupled using directional light principle, is implemented as wavelength X 1 by directional light B lens and is converted to directional light, passes through
Filter plate F1 reflection, through filter plate F2 ..., filter plate Fn-1, filter plate Fn transmit, converged via directional light A lens
It is poly-, further realize coupling；Similar λ 2, λ 3 ..., λ n-1, λ n realize multiplex, coupling firing；Wherein filter plate is 45 °
Diaphragm.
Preferably scheme, at least one in parallel light lens B1, B2, B3 ... of the transmitting terminal group, Bn-1, Bn are parallel
Optical lens is vertical with other parallel light lens.As shown in figure 3, the launch scenario is B scheme, transmitting terminal B scheme and A scheme class
Seemingly, the difference is that, A scheme transmitting terminal is conducive to PCB design in same direction, but adds a filtering relative to B scheme
Piece, structure design are slightly complicated；The last one transmitting terminal of B scheme is vertical with other reception extreme directions, will increase PCB design at
This, but can reduce by a filter plate, structure design comparatively simplifies.
Beneficial effects of the present invention: this ROF optical device packaging method based on CWDM provided by the invention, by
Different filter plates is set in optical path, and the optical carrier of the corresponding wavelength of each filter plate, the filter plate can only reflect pair
It answers the light of wavelength and transmits the light of other wavelength, optical carrier is carried out not using the transmission of filter plate and reflection in transmitting terminal
Co-wavelength multiplex is simultaneously transmitted, receiving end using filter plate transmission and reflection to optical carrier carry out different wave length partial wave and
It is coupled to receive, realizes multi-wavelength light carrier radio communication, to increase the bandwidth of single channel transmission, improve efficiency of transmission, drop
Low transmission cost.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.
Claims (8)
1. a kind of ROF optical device packaging method based on CWDM, which comprises the following steps:
Transmitting terminal group emit respectively different wave length be λ 1, λ 2, λ 3 ..., λ n-1, the multi beam optical carrier of λ n and by one by one
Be converted to after corresponding parallel light lens B1, B2, B3 ..., Bn-1, Bn corresponding more incident directional light L1, L2, L3 ...,
Ln-1,Ln；
Described incident parallel light L1, L2, L3 ..., Ln-1, Ln are respectively by one-to-one filter plate F1, filter plate F2, filter
Corresponding multi beam reflected light R1, R2, R3 ..., Rn-1, Rn are formed after wave plate F3 ... filter plate Fn；
Described reflected light R1, R2, R3 ..., Rn-1, Rn pass through parallel light lens A and form transmitting multiplex；
The transmitting multiplex filter plate F1 ' by receiving end group, filter plate F2 ', filter plate F3 ' ... filter plate Fn ' respectively
Corresponding multi beam, which is converted to, using one-to-one parallel light lens B1, B2, B3 ..., Bn-1, Bn after reflection receives partial wave
G1,G2,G3……,Gn-1,Gn；
Wherein, n is positive integer.
2. the ROF optical device packaging method according to claim 1 based on CWDM, it is characterised in that: the filter plate
F2, filter plate F3 ... filter plate Fn are sequentially located on the reflected light path of the reflected light R1, and by the filter plate F2, filter
The transmission light that wave plate F3 ... filter plate Fn is formed is directional light.
3. the ROF optical device packaging method according to claim 1 based on CWDM, it is characterised in that: described through filtering
The reception transmitted light that wave plate Fn ', filter plate F3 ' ... filter plate F2 ', filter plate F1 ' are formed is directional light.
4. the ROF optical device packaging method according to claim 2 or 3 based on CWDM, it is characterised in that: when different waves
When long light passes through filter plate, the filter plate reflects corresponding wavelength light, and transmits to other wavelength lights.
5. the ROF optical device packaging method according to claim 4 based on CWDM, it is characterised in that: the filter plate
For 45 ° of diaphragms, 45 ° of diaphragms and incident light are at 45 °.
6. the ROF optical device packaging method according to claim 1 based on CWDM, it is characterised in that: the transmitting is closed
Wave reflects after filter plate F1 ', filter plate F2 ', filter plate F3 ... filter plate Fn ' reflection using reflectance coating respectively, passes through
It is converted to corresponding multi beam using one-to-one parallel light lens B1, B2, B3 ..., Bn-1, Bn after crossing reflectance coating reflection and connects
Contracture wave G1, G2, G3 ..., Gn-1, Gn.
7. the ROF optical device packaging method according to claim 1 based on CWDM, it is characterised in that: the transmitting terminal
Parallel light lens B1, B2, B3 ..., Bn-1, Bn of group are respectively positioned in a plane.
8. the ROF optical device packaging method according to claim 1 based on CWDM, it is characterised in that: the transmitting terminal
Parallel light lens B1, B2, B3 ... of group, at least one parallel light lens is vertical with other parallel light lens in Bn-1, Bn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091424.8A CN109164544A (en) | 2018-09-19 | 2018-09-19 | A kind of ROF optical device packaging method based on CWDM |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091424.8A CN109164544A (en) | 2018-09-19 | 2018-09-19 | A kind of ROF optical device packaging method based on CWDM |
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| CN109164544A true CN109164544A (en) | 2019-01-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646893A (en) * | 2019-10-25 | 2020-01-03 | 深圳市埃尔法光电科技有限公司 | VCSEL-based CWDM optical device |
| CN111538222A (en) * | 2019-02-07 | 2020-08-14 | 株式会社岛津制作所 | Light source device and holographic observation device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6647175B1 (en) * | 2001-10-08 | 2003-11-11 | Raytheon Company | Reflective light multiplexing device |
| CN103457664A (en) * | 2012-06-01 | 2013-12-18 | 株式会社Ntt都科摩 | System for implementing a radio over fiber transmission in a passive optical network |
| CN104076454A (en) * | 2013-03-27 | 2014-10-01 | 三菱电机株式会社 | Optical transmitting apparatus and optical receiving apparatus |
-
2018
- 2018-09-19 CN CN201811091424.8A patent/CN109164544A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6647175B1 (en) * | 2001-10-08 | 2003-11-11 | Raytheon Company | Reflective light multiplexing device |
| CN103457664A (en) * | 2012-06-01 | 2013-12-18 | 株式会社Ntt都科摩 | System for implementing a radio over fiber transmission in a passive optical network |
| CN104076454A (en) * | 2013-03-27 | 2014-10-01 | 三菱电机株式会社 | Optical transmitting apparatus and optical receiving apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111538222A (en) * | 2019-02-07 | 2020-08-14 | 株式会社岛津制作所 | Light source device and holographic observation device |
| CN111538222B (en) * | 2019-02-07 | 2022-08-05 | 株式会社岛津制作所 | Light source device and holographic observation device |
| US11640137B2 (en) | 2019-02-07 | 2023-05-02 | Shimadzu Corporation | Light source device and holographic observation apparatus |
| CN110646893A (en) * | 2019-10-25 | 2020-01-03 | 深圳市埃尔法光电科技有限公司 | VCSEL-based CWDM optical device |
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