CN108988951A - Fiber optical transceiver and coaxial R-T unit - Google Patents
Fiber optical transceiver and coaxial R-T unit Download PDFInfo
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- CN108988951A CN108988951A CN201810671334.XA CN201810671334A CN108988951A CN 108988951 A CN108988951 A CN 108988951A CN 201810671334 A CN201810671334 A CN 201810671334A CN 108988951 A CN108988951 A CN 108988951A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
Abstract
The invention discloses fiber optical transceiver and include the coaxial R-T unit of the fiber optical transceiver.The fiber optical transceiver includes: the first optical fiber, the second optical fiber, launching fiber, reception optical fiber and transmitting-receiving optical fiber；First optical fiber connects the launching fiber and the transmitting-receiving optical fiber；Second optical fiber connects the reception optical fiber, and second optical fiber is disposed proximate to first optical fiber；First optical fiber, for receiving laser through the launching fiber and being transmitted to the transmitting-receiving optical fiber；Return light of the laser through object to be measured is received through the transmitting-receiving optical fiber and is coupled to second optical fiber；Second optical fiber is used for the return optical transport to the reception optical fiber.The present invention realizes coaxial transmitting-receiving with simplified structure, simultaneously because realizing based on optical fiber, facilitates carry out flexible installing.
Description
Technical field
The present invention relates to field of detecting, in particular to fiber optical transceiver and coaxial R-T unit.
Background technique
Laser radar is the product that traditional Radar Technology is combined with modern laser.It is using laser as electromagnetism spoke
Source is penetrated, carries out ranging and orientation using return laser beam, and know by the emission characteristics of position, radial velocity and target object
Other object, embodies special transmitting, scanning, reception and signal processing technology, is a kind of particularly important active remote sensing tool,
Integrated and application is obtained in a variety of different platforms.Miniaturization and integration apply the weight for becoming a consideration in laser radar
Want factor.
Optical transmitting system used in laser radar mainly has transmitting-receiving to be divided to aperture and altogether two kinds of aperture, wherein dividing aperture can be with
Referred to as non co axial is received and dispatched, and aperture is properly termed as coaxial transmitting-receiving altogether.The laser radar of separate type is received and dispatched, it is typical as pulse type laser is surveyed
Away from machine, the transmitting antenna and receiving antenna of laser are two optical telescopes, and receiving telescope bore is big, and echo reception ability is more
By force, it is suitble to detection at a distance, but it needs complicated plain shaft parallelism debugging, due to largely using space optics,
Imbalance is easy to appear under adverse circumstances, optical axis stable is poor, while volume is larger, is unfavorable for the system integration.The laser in aperture altogether
Radar, one optical telescope of transmitting antenna and receiving antenna multicoupler emit optical signal and echo in optical system back-end realization
The separation of optical signal, main technological approaches have the modes such as scraper mirror, half-reflecting half mirror, optical fiber circulator, polarization polarization apparatus.
By taking devating prism solution as shown in Figure 1 as an example, the program is realized by a semi-transparent semi-reflecting lens 115.Its
Disadvantage is: system structure is more complex, needs 140 two groups of camera lenses of semi-transparent semi-reflecting lens 115 and receiver；The light that light source 110 issues
When beam passes through semi-transparent semi-reflecting lens 115, existing transmission also has reflection, can lose part energy, when receiving Returning beam, passes through
When semi-transparent semi-reflecting lens 115, existing transmission also has reflection, can also lose part energy, therefore only portion of energy reaches reception
System, noise is relatively low, and detection range is limited.
Summary of the invention
The embodiment of the invention provides fiber optical transceiver and coaxial R-T units.For some sides of the embodiment to disclosure
There is a basic understanding in face, and simple summary is shown below.The summarized section is not extensive overview, nor to determine pass
Key/important composition element or the protection scope for describing these embodiments.Its sole purpose is some general with the presentation of simple form
It reads, in this, as the preamble of following detailed description.
In a first aspect, the fiber optical transceiver includes: the first light the embodiment of the invention provides a kind of fiber optical transceiver
Fibre, the second optical fiber, launching fiber, reception optical fiber and transmitting-receiving optical fiber；
First optical fiber connects the launching fiber and the transmitting-receiving optical fiber；
Second optical fiber connects the reception optical fiber, and second optical fiber is disposed proximate to first optical fiber；
First optical fiber, for receiving laser through the launching fiber and being transmitted to the transmitting-receiving optical fiber；Through the receipts
The fibre that shines receives the return light of the laser through object to be measured and is coupled to second optical fiber；
Second optical fiber is used for the return optical transport to the reception optical fiber.
Based on the fiber optical transceiver, as optional first embodiment, first optical fiber has covering and fibre core, institute
It states after return light transmits set distance in the covering and is coupled to second optical fiber.
Based on the fiber optical transceiver, as optional second embodiment, second optical fiber is at least two, surrounds institute
It states the first optical fiber and is disposed proximate to first optical fiber.
Based on the second embodiment, as optional 3rd embodiment, every second optical fiber is connected described in one
Reception optical fiber.
Based on the fiber optical transceiver, as optional fourth embodiment, first optical fiber, the launching fiber and institute
State the parameter matching of transmitting-receiving optical fiber；
Alternatively, first optical fiber, the launching fiber and the transmitting-receiving optical fiber are an optical fiber.
Based on the fiber optical transceiver, the first embodiment or the fourth embodiment, implement as the optional 5th
Example, first optical fiber, the launching fiber and the transmitting-receiving optical fiber are doubly clad optical fiber.
Based on the fiber optical transceiver, as optional sixth embodiment, second optical fiber and the reception optical fiber
Parameter matching；
Alternatively, second optical fiber and the reception optical fiber are an optical fiber.
Based on the fiber optical transceiver or the sixth embodiment, as optional 7th embodiment, second optical fiber
It is no clad silica silk with the reception optical fiber.
Second aspect, the embodiment of the invention provides a kind of coaxial R-T unit, the coaxial R-T unit includes: laser
Device, receiver, transceiver and fiber optical transceiver above-mentioned；
The laser, for emitting laser；
The transceiver, for receiving the laser of the fiber optical transceiver transmission, being concurrently incident upon the object to be measured；
It receives return light of the laser through the object to be measured and is transmitted to the fiber optical transceiver；
The receiver, for receiving the return light of the fiber optical transceiver transmission and being converted into electric signal.
Based on the coaxial R-T unit, as optional first embodiment, the transceiver is also used to, with scanning mode
By the Laser emission to the object to be measured.
Fiber optical transceiver and coaxial R-T unit in the embodiment of the present invention, achieve it is following the utility model has the advantages that
First, coaxial transmitting-receiving is realized based on simple structure；
Second, it is realized based on optical fiber, facilitates carry out flexible installing.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 be in the prior art it is a kind of it is coaxial transmitting-receiving detection device schematic diagram；
Fig. 2 is the schematic diagram of fiber optical transceiver in an exemplary embodiment；
Fig. 3 is the schematic diagram of coaxial R-T unit in an exemplary embodiment；
Fig. 4 is the schematic diagram of the coaxial transmitting-receiving detection device in an exemplary embodiment；
Fig. 5 is the schematic diagram of the coaxial transmitting-receiving detection device in an exemplary embodiment；
Fig. 6 is realization schematic diagram of the multiplexed detection on automobile in an exemplary embodiment；
Fig. 7 is the structural schematic diagram of the transmitting-receiving scanner in an exemplary embodiment；
Fig. 8 is the structural schematic diagram of the transmitting-receiving scanner in an exemplary embodiment；
Fig. 9 is the structural schematic diagram of the transmitting-receiving scanner in an exemplary embodiment；
Figure 10 is the structural schematic diagram of the transmitting-receiving scanner in an exemplary embodiment；
Figure 11 a is the schematic diagram for carrying out one-dimensional scanning in an exemplary embodiment in one direction；
Figure 11 b is to carry out the schematic diagram of two-dimensional scanning in both direction in an exemplary embodiment；
Figure 12 is the structural schematic diagram of the fiber optical transceiver in an exemplary embodiment；
Figure 13 is the application example schematic diagram of the coaxial R-T unit in an exemplary embodiment.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.Embodiment only represents possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and
And the sequence of operation can change.The part of some embodiments and feature can be included in or replace other embodiments
Part and feature.The range of embodiment of the present invention includes the entire scope of claims and the institute of claims
There is obtainable equivalent.Herein, each embodiment can individually or generally be indicated that this is only with term " invention "
It is merely for convenience, and if in fact disclosing the invention more than one, it is not meant to automatically limit the range of the application
For any single invention or inventive concept.Herein, relational terms such as first and second and the like are used only for one
Entity, which is perhaps operated, to be distinguished and exists without requiring or implying between these entities or operation with another entity or operation
Any actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method or equipment not only include those elements, but also including
Other elements that are not explicitly listed.Each embodiment herein is described in a progressive manner, and each embodiment stresses
Be the difference from other embodiments, the same or similar parts in each embodiment may refer to each other.
In one exemplary embodiment, as shown in Fig. 2, fiber optical transceiver 13 include: the first optical fiber 91, the second optical fiber 92,
Launching fiber 6, reception optical fiber 7 and transmitting-receiving optical fiber 8；
First optical fiber 91 connects launching fiber 6 and transmitting-receiving optical fiber 8.
Second optical fiber 92 connects reception optical fiber 7, and the second optical fiber 92 is disposed proximate to the first optical fiber 91.
First optical fiber 91 receives laser for emitted optical fiber 7 and is transmitted to transmitting-receiving optical fiber 8；Institute is received through transmitting-receiving optical fiber 8
It states return light of the laser through object to be measured and is coupled to the second optical fiber 92.
Second optical fiber 92 is used for the return optical transport to reception optical fiber 7.
Fiber optical transceiver in the present exemplary embodiment, achieve it is following the utility model has the advantages that
First, coaxial transmitting-receiving is realized based on simple structure；
Second, it is realized based on optical fiber, facilitates carry out flexible installing.
In one exemplary embodiment, as shown in figure 3, coaxial R-T unit 30 includes: laser 12, transceiver 15, connects
Receive device 14 and fiber optical transceiver 13 as shown in Figure 2.
Laser 12, for emitting laser.
Transceiver 15, the laser transmitted for reception optical fiber transceiver 13 are concurrently incident upon object to be measured；Described in reception
Return light of the laser through object to be measured is simultaneously transmitted to fiber optical transceiver 13.
Receiver 14, the return light transmitted for reception optical fiber transceiver 13 are simultaneously converted into electric signal.
As it can be seen that laser 12 passes through transmitting-receiving optical fiber by reception optical fiber 7, transceiver 15 by launching fiber 6, receiver 14
8 are connected to become a whole with fiber optical transceiver 13, form a set of total aperture R-T unit realized based on optical fiber.
As optional embodiment, transceiver 15 can be receiving lens, also may include receiving lens and scanner,
Enable transceiver 15 with scanning mode by Laser emission to object to be measured, transceiver 15 is referred to as shown hereinafter at this time
Transmitting-receiving scanner 15 described in example.
Fiber optical transceiver 13 shown in Fig. 2 and coaxial R-T unit 30 shown in Fig. 3, can be used for Electro-Optical Sensor Set
In, exemplary embodiment is given below.
In one exemplary embodiment, as shown in figure 4, coaxial transmitting-receiving detection device include: processor 11, laser 12,
Fiber optical transceiver 13, receiver 14 and transmitting-receiving scanner 15.
Processor 11 emits laser for controlling laser 12；The signal that processing receiver 14 obtains.
Receive and dispatch scanner 15, for scanning mode by the Laser emission to object to be measured；Receive the laser pass through to
Survey the return light of object.
Fiber optical transceiver 13 receives the laser for emitted optical fiber 6, is transmitted to the laser through transmitting-receiving optical fiber 8
Receive and dispatch scanner 15；The return light of the transmitting-receiving transmission of scanner 15 is received through transmitting-receiving optical fiber 8 and received optical fiber 7 will be described
Return optical transport is to receiver 14.
Receiver 14, for receiving the return light and being converted into electric signal.
Consider that actual application environment, detection device can be divided into internal mounting part 100 and external installation section 200, on
Stating each component can be separately contained in this two parts.
Coaxial transmitting-receiving detection device in the present exemplary embodiment, achieve it is following the utility model has the advantages that
First, simplify the structure of detection device；
Second, emit visual field and field of view of receiver matched, more return light can be received, improve signal-to-noise ratio and spy
Ranging from；
Third, the various pieces in device are connected by optical fiber, and carry out flexible installing is facilitated.
In one exemplary embodiment, as shown in figure 5, coaxial transmitting-receiving detection device include: processor 11, laser 12,
Fiber optical transceiver 13, receiver 14, transmitting-receiving scanner 15 and fiber optic splitter 16.
Fiber optic splitter 16, the laser for emitting laser 12 are divided at least two light beams, each light beam corresponding one
A detection access.
The detection access includes: at least one fiber optical transceiver 13, at least one receiver 14 and at least one transmitting-receiving
Scanner 15.As it can be seen that combination there are many devices that detection access includes, such as a detection access may include a light
13, receivers 14 of fine transceiver and a transmitting-receiving scanner 15, in another example a detection access may include an optical fiber
Transceiver 13, multiple receivers 14 and a transmitting-receiving scanner 15.Optionally, a transmitting-receiving scanner 15 may belong to multiple spies
Access is surveyed, in this case, a transmitting-receiving scanner 15 can pass through multiple transmitting-receiving optical fiber 8 and multiple 13 phases of fiber optical transceiver
Even.
Processor 11 includes controller and at least one signal processor.The controller is for controlling the transmitting of laser 12
Laser, the signal processor is for handling the signal that receiver 14 obtains.Optionally, each signal processor, can be with
Handle the signal that one or more receivers 14 obtain.
Receive and dispatch scanner 15, for scanning mode by the Laser emission to object to be measured；Receive the laser pass through to
Survey the return light of object.
Fiber optical transceiver 13 receives the laser for emitted optical fiber 6, is transmitted to the laser through transmitting-receiving optical fiber 8
Receive and dispatch scanner 15；The return light of the transmitting-receiving transmission of scanner 15 is received through transmitting-receiving optical fiber 8 and received optical fiber 7 will be described
Return optical transport is to receiver 14.
Receiver 14, for receiving the return light and being converted into electric signal.
After fiber optic splitter 16, the laser all the way that can emit laser 12 is divided into multichannel, realizes that multichannel is visited
It surveys, effectively reduces cost, reduce the size of detection device.Each detection access, can with flexible installing application environment not
The detection to different zones is realized in same position.
As shown in fig. 6, by taking application environment is automobile 300 as an example, each above-mentioned detection access may be mounted at automobile
Different location.Two transmitting-receiving scanners 15 are set side by side in headstock position, and one is used as remote small field of view, and one is used as closely
Big visual field.Several transmitting-receiving scanners 15 also can be set with backward in automobile side angle.
In one exemplary embodiment, the internal structure for receiving and dispatching scanner 15 includes collimating components, can also include reflection
At least one of formula beam deflector part array and transmission-type beam deflector part array.Previously described transmitting-receiving lens can be with
Corresponding above-mentioned collimating components, previously described scanner can correspond to above-mentioned reflecting light beam deflecting device array or transmission-type light
Beam deflecting device array.
The reflecting light beam deflecting device is referred to changing by the mirror surface attitude angle of device, be irradiated in light beam
When reflection on it, change the device of direction of beam propagation.
The reflecting light beam deflecting device array may include at least one reflecting light beam deflecting device, reflecting light
Beam deflecting device can be MEMS galvanometer, tilting mirror, galvanometer or other reflecting mirrors etc., when including multiple reflecting light beam deflecting devices
When, multiple reflecting light beam deflecting device series connection.
The transmission-type beam deflector part refers to that, by adjusting the electric signal on device is added in, penetrating in light beam should
When device, the device for changing direction of beam propagation is realized.
The transmission-type beam deflector part array may include at least one transmission-type beam deflector part, transmission-type light
Beam deflecting device can be electro-optical device, acousto-optical device, liquid crystal device or phased array device etc., when including multiple transmission-type light beams
When deflection device, multiple transmission-type beam deflector part series connection.
Several citings of transmitting-receiving 15 internal structure of scanner are given below.
As shown in fig. 7, transmitting-receiving scanner 15 includes: collimating components 41, reflecting light beam deflecting device array and transmission-type
Beam deflector part array.
Transmission-type beam deflector part array includes multiple transmission-type beam deflector parts 43 being arranged in series.
Reflecting light beam deflecting device array includes a reflecting light beam deflecting device 42, for emitting laser 12
Laser reflection to transmission-type beam deflector part 43；Receive the return light from transmission-type beam deflector part 43.
The setting of collimating components 41 is between transmitting-receiving optical fiber 8 and reflecting light beam deflecting device 42 and reflected light beams are inclined
Turn between device 42 and transmission-type beam deflector part 43.Under the application scenarios having, collimating components 41, which also can be set, to be received
It shines between fibre 8 and reflecting light beam deflecting device 42 or reflecting light beam deflecting device 42 and transmission-type beam deflector part
Between 43 wherein at one.
As optional embodiment, collimating components 41 can be lens group, play the role of collimation and optically focused.
A transmission-type beam deflector part 43 can also be only included as optional embodiment, in transmissive arrays.
It receives and dispatches scanner 15 and passes through at least one in reflecting light beam deflecting device 42 and transmission-type beam deflector part 43
It is a, realize the Laser emission that emits laser 12 with scanning mode to object to be measured.
As shown in figure 8, transmitting-receiving scanner 15 includes: collimating components 51, reflecting light beam deflecting device array and transmission-type
Beam deflector part array.
Transmission-type beam deflector part array includes multiple transmission-type beam deflector parts 53 being arranged in series.
Reflecting light beam deflecting device array is inclined including the first reflecting light beam deflecting device 521, the second reflected light beams
Turn device 522.First reflecting light beam deflecting device 521, laser reflection for emitting laser 12 is to second reflective
Beam deflector part 522；Receive the return light from the second reflecting light beam deflecting device 522.
Second reflecting light beam deflecting device 522, the laser reflection for emitting laser 12 are inclined to transmission-type light beam
Turn device 53；Receive the return light from transmission-type beam deflector part 53.
Collimating components 51, setting is between transmitting-receiving optical fiber 8 and the first reflecting light beam deflecting device 521 and second reflects
Between formula beam deflector part 522 and transmission-type beam deflector part 53.Under the application scenarios having, collimating components 51 can also be with
Setting transmitting-receiving optical fiber 8 and the first reflecting light beam deflecting device 521 between or 522 and of the second reflecting light beam deflecting device
Between transmission-type beam deflector part 53 wherein at one.
As optional embodiment, structure shown in Fig. 8 can not also include transmissive arrays, and direct by reflective array
By Laser emission to object to be measured, return light of the laser through object to be measured is then directly received.
As optional embodiment, in structure shown in Fig. 8, transmission-type beam deflector part array can also be only included
One transmission-type beam deflector part 53.
As shown in figure 9, transmitting-receiving scanner 15 includes: collimating components 61 and reflecting light beam deflecting device array.
Reflecting light beam deflecting device array includes a reflecting light beam deflecting device 62, for emitting laser 12
Laser reflection to object to be measured；It receives return light of the laser through object to be measured and reflexes to transmitting-receiving optical fiber 8.
The setting of collimating components 61 is between transmitting-receiving optical fiber 8 and reflecting light beam deflecting device 62 and reflected light beams deflect
Between device 62 and object to be measured.
As shown in Figure 10, transmitting-receiving scanner 15 includes: collimating components 71 and transmission-type beam deflector part array.
Transmission-type beam deflector part array includes multiple transmission-type beam deflector parts 72 being arranged in series.
The setting of collimating components 71 is between transmitting-receiving optical fiber 8 and transmission-type beam deflector part 72.
As optional embodiment, it is inclined that transmission-type beam deflector part array can also only include a transmission-type light beam
Turn device 72.
Based on Fig. 7 to any structure of transmitting-receiving scanner 15 shown in Fig. 10, a transmitting-receiving scanner 15 be can connect
At least two transmitting-receiving optical fiber 8.When transmitting-receiving scanner 15 connects more transmitting-receiving optical fiber 8, emitted energy can be improved, and be received back
The hot spot for returning light is larger, to collect more energy, improves the sensitivity of detection device.
Based on Fig. 7 to any structure of transmitting-receiving scanner 15 shown in Fig. 10, transmitting-receiving scanner 15 can be such as Figure 11 a institute
Show and carries out one-dimensional scanning in one direction, it, can also be as shown in figure 11b two such as the scanning in horizontal direction or vertical direction
Two-dimensional scanning, such as snake scan are carried out on a direction.
Based on Fig. 7 to any structure of transmitting-receiving scanner 15 shown in Fig. 10, transmitting-receiving scanner 15 has different angles
Range, sweep spacing and scanning speed are spent, realizes detection angle range, the dynamic change of angular resolution and speed of detection.Below
Provide two citings.
On a highway, vehicle driving is very fast, and forward detection is needed to detecting more at a distance, and detection can concentrate
Within the scope of the set angle of right ahead, at this time receive and dispatch scanner 15 can according to setup parameter, carry out it is non-angularly between
Every non-uniform speed scanning, by scanning be concentrated mainly within the scope of the set angle of right ahead.In business district, vehicle driving compared with
Slowly, traffic condition is complicated, and forward detection needs to cover biggish angular range, and receiving and dispatching scanner 15 at this time can carry out angularly
The uniform speed scanning at interval.
It, can also be by above-mentioned equiangularly spaced scanning, non-equiangularly spaced scanning, uniform speed scanning under other application scenarios
With non-uniform speed scanning with the use of other combinations.
In one exemplary embodiment, as shown in figure 12, fiber optical transceiver 13 include: the first optical fiber 91, the second optical fiber 92,
Launching fiber 6, reception optical fiber 7 and transmitting-receiving optical fiber 8.
First optical fiber 91 connects launching fiber 6 and transmitting-receiving optical fiber 8, and the first optical fiber 91, launching fiber 6 and transmitting-receiving optical fiber 8 have
There are covering and fibre core.
Second optical fiber 92 connects reception optical fiber 7, and the second optical fiber 92 is disposed proximate to the first optical fiber 91.It is disposed proximate to can be
It fits closely.
Return light through object to be measured reaches the first optical fiber 91 by transmitting-receiving optical fiber 8, and passes in the covering of the first optical fiber 91
The second optical fiber 92 is coupled to after defeated set distance.It is coupled to the return light of the second optical fiber 92, according to coupling efficiency difference, is had not
Together.
As optional embodiment, the first optical fiber 91, launching fiber 6 and the parameter matching or first for receiving and dispatching optical fiber 8
Optical fiber 91, launching fiber 6 and transmitting-receiving optical fiber 8 can be an optical fiber, which can be single mode optical fiber or doubly clad optical fiber.The
The matching of the parameter of two optical fiber 92 and reception optical fiber 7 or the second optical fiber 92 and reception optical fiber 7 can be an optical fiber, the optical fiber
There is no fibre core, such as the optical fiber can be quartz fibre.
As optional embodiment, the second optical fiber 92 can be at least two, around the first optical fiber 91 and with the first light
Fibre 91 is disposed proximate to.
Based on structure shown in Figure 12, fiber optical transceiver 13 may be implemented transmitting-receiving and efficiently separate.Come from the transmission of launching fiber 6
Laser reach fiber optical transceiver 13 after, can be a large amount of or fully enter transmitting-receiving optical fiber 8, come from the transmitting-receiving transmission of optical fiber 8 return
After light reaches fiber optical transceiver 13, can largely or all it be coupled into reception optical fiber 7.
As optional embodiment, the second optical fiber 92 is identical with the quantity of reception optical fiber 7.Further, a receiver
14 can be connected at least two reception optical fibers 7.
In one exemplary embodiment, as shown in figure 13, the application example of a coaxial R-T unit is given.
Laser 12 is the human eye safe waveband optical fiber laser that an output wavelength is 1550nm, and output mean power is
1W, peak power 1kW, the size of optical fiber are 10/125 μm, and numerical aperture (NA) is 0.14/0.46, and launching fiber 6 is same parameter
Passive fiber.Receiver 14 is InGsAs avalanche photodide, realizes that efficient laser signal couples with reception optical fiber 7, connects
Receiving optical fiber 7 is no clad silica silk, and diameter is 250 μm, numerical aperture 0.46.The size for receiving and dispatching optical fiber 8 is 10/250 μm, number
Value aperture is 0.14/0.46, and fibre core is used for forward direction transmission laser, and covering is for reversely receiving laser through the return of object to be measured
Light, the focal length for receiving and dispatching lens is 10mm, aperture F1.0.
It should be understood that the invention is not limited to the process and structure that are described above and are shown in the accompanying drawings,
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by the attached claims
System.
Claims (10)
1. a kind of fiber optical transceiver, which is characterized in that the fiber optical transceiver includes: the first optical fiber, the second optical fiber, transmitting light
Fine, reception optical fiber and transmitting-receiving optical fiber；
First optical fiber connects the launching fiber and the transmitting-receiving optical fiber；
Second optical fiber connects the reception optical fiber, and second optical fiber is disposed proximate to first optical fiber；
First optical fiber, for receiving laser through the launching fiber and being transmitted to the transmitting-receiving optical fiber；
Return light of the laser through object to be measured is received through the transmitting-receiving optical fiber and is coupled to second optical fiber；
Second optical fiber is used for the return optical transport to the reception optical fiber.
2. fiber optical transceiver as described in claim 1, which is characterized in that first optical fiber has covering and fibre core, described
Return light is coupled to second optical fiber after transmitting set distance in the covering.
3. fiber optical transceiver as described in claim 1, which is characterized in that second optical fiber is at least two, around described
It first optical fiber and is disposed proximate to first optical fiber.
4. fiber optical transceiver as claimed in claim 3, which is characterized in that every second optical fiber connects a reception
Optical fiber.
5. fiber optical transceiver as described in claim 1, which is characterized in that first optical fiber, the launching fiber and described
Receive and dispatch the parameter matching of optical fiber；
Alternatively, first optical fiber, the launching fiber and the transmitting-receiving optical fiber are an optical fiber.
6. the fiber optical transceiver as described in claim 1,2 or 5, which is characterized in that first optical fiber, the launching fiber and
The transmitting-receiving optical fiber is doubly clad optical fiber.
7. fiber optical transceiver as described in claim 1, which is characterized in that the parameter of second optical fiber and the reception optical fiber
Matching；
Alternatively, second optical fiber and the reception optical fiber are an optical fiber.
8. fiber optical transceiver as claimed in claim 1 or 7, which is characterized in that second optical fiber and the reception optical fiber are
Without clad silica silk.
9. a kind of coaxial R-T unit, which is characterized in that the coaxial R-T unit include: laser, receiver, transceiver and
Fiber optical transceiver as described in claim 1；
The laser, for emitting laser；
The transceiver, for receiving the laser of the fiber optical transceiver transmission, being concurrently incident upon the object to be measured；It receives
Return light of the laser through the object to be measured is simultaneously transmitted to the fiber optical transceiver；
The receiver, for receiving the return light of the fiber optical transceiver transmission and being converted into electric signal.
10. coaxial R-T unit as claimed in claim 9, which is characterized in that the transceiver is also used to, will with scanning mode
The Laser emission is to the object to be measured.
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| CN201810671334.XA CN108988951A (en) | 2018-06-26 | 2018-06-26 | Fiber optical transceiver and coaxial R-T unit |
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| CN201810671334.XA CN108988951A (en) | 2018-06-26 | 2018-06-26 | Fiber optical transceiver and coaxial R-T unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444937A (en) * | 2018-08-08 | 2019-03-08 | 北京木业邦科技有限公司 | Tree vigorous degree and Tending methods, device, electronic equipment and storage medium |
| WO2020001372A1 (en) * | 2018-06-26 | 2020-01-02 | 洛伦兹（北京）科技有限公司 | Coaxial transmitting-receiving detection device |
| WO2020191809A1 (en) * | 2019-03-25 | 2020-10-01 | 深圳市速腾聚创科技有限公司 | Laser radar, and installation and adjustment method therefor |
| CN114089312A (en) * | 2022-01-20 | 2022-02-25 | 洛伦兹(宁波)科技有限公司 | Coaxial laser transceiver and coaxial laser transceiver detection device |
| US11782144B2 (en) | 2019-04-04 | 2023-10-10 | Suteng Innovation Technology Co., Ltd. | Lidar and adjustment method thereof |
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