CN209032317U - A kind of single light source multichannel subregion frequency sweep OCT system - Google Patents
A kind of single light source multichannel subregion frequency sweep OCT system Download PDFInfo
- Publication number
- CN209032317U CN209032317U CN201820012515.7U CN201820012515U CN209032317U CN 209032317 U CN209032317 U CN 209032317U CN 201820012515 U CN201820012515 U CN 201820012515U CN 209032317 U CN209032317 U CN 209032317U
- Authority
- CN
- China
- Prior art keywords
- light source
- coupler
- frequency sweep
- port
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a kind of single light source multichannel subregion frequency sweep OCT systems, the multichannel subregion frequency sweep OCT system includes: swept light source, main road coupler, data acquisition module, data processing module, reference arm and multiple optic path units, each optic path unit includes: circulator, branch coupler, sample arm and balance photoamplifier, the swept light source is connected by optical fiber with main road coupler, main road coupler is respectively connected to the circulator of each optic path unit by a plurality of optical fiber, circulator is connect with balance photoamplifier and branch coupler respectively by optical fiber, branch coupler is connected with sample arm and reference arm respectively by optical fiber, each balance photoamplifier is electrically connected to data acquisition module, data acquisition module is connected with data processing module.The problem of the utility model is able to solve existing frequency sweep OCT system sweep speed and places one's entire reliance upon swept light source rate, and scanning speed can not continue to lift up.
Description
Technical field
The utility model relates to photoelectric instrument equipment technical fields, and in particular to a kind of single light source multichannel subregion frequency sweep OCT
System.
Background technique
OCT full name " optical coherence tomography " is a kind of using optical interference means, extracts tissue deep layer (< 3.5mm) information
Technology.After OCT system entered clinic from 1992, it is widely applied in ophthalmology, cardiology department, dermatology, OCT technology is practical new
Type so far, has undergone technology iteration three times.First generation technique is time domain OCT, and scanning speed is very slow, and (A-Scan speed is hundred hertz
The hereby order of magnitude).Second-generation technology is spectral coverage OCT, and scanning speed is obviously improved (A-Scan speed is ten thousand hertz of orders of magnitude).And the
Three generation techniques are frequency sweep OCT, and scanning speed is further promoted to 100,000 hertz of orders of magnitude (A-Scan).
Swept light source is the most crucial device in frequency sweep OCT system, and original accounts for the 60% of frequency sweep OCT system, frequency sweep
The scanning speed of OCT places one's entire reliance upon the speed of swept light source.The upper limit of current commercialization swept light source speed is 200kHz (A-
Scan), which can satisfy usually scanning needs, but if desired carry out on a large scale (>20mm*20mm) or ultrahigh speed (<
0.3s) three-dimensional OCT image, the scanning speed of 200k (A-Scan) have been unable to satisfy needs, and scanning speed can not continue to lift up.
The utility model provides a kind of single light source multichannel subregion frequency sweep OCT system, is able to solve existing frequency sweep OCT system speed
Rate place one's entire reliance upon swept light source rate the problem of, be changed without in swept light source, system cost increase be no more than 30% premise
Under, the output signal of single channel swept light source is multiplexed, with the mode of multichannel subarea-scanning, scanning speed is promoted more times.
Utility model content
The purpose of this utility model is to provide a kind of single light source multichannel subregion frequency sweep OCT systems and its subregion frequency sweep to realize
Method, places one's entire reliance upon swept light source rate to solve existing frequency sweep OCT system sweep speed, and scanning speed can not continue to mention
The problem of rising.
To achieve the above object, the technical solution of the utility model are as follows: a kind of single light source multichannel subregion frequency sweep OCT system is provided
System, the multichannel subregion frequency sweep OCT system include: swept light source, main road coupler, data acquisition module, data processing module,
Reference arm and multiple optic path units, each optic path unit include: circulator, branch coupler, sample arm and balance
Photoamplifier, the swept light source are connected by optical fiber with main road coupler, and main road coupler is connected respectively by a plurality of optical fiber
It is connected to the circulator of each optic path unit, circulator is connected with balance photoamplifier and branch coupler respectively by optical fiber
It connects, branch coupler is connected with sample arm and reference arm respectively by optical fiber, and each balance photoamplifier is electrically connected to count
According to acquisition module, data acquisition module is connected with data processing module.
The signal output port of the main road coupler is connected with calibration list by optical fiber as a preferred technical solution,
The signal output of member, the calibration unit is connected to data acquisition module.
The main road coupler includes at least three signal output ports, at least three letters as a preferred technical solution,
Number output port passes through optical fiber respectively and is connected with calibration unit and at least two optic path units.
The circulator has first port, second port and third port, first end as a preferred technical solution,
Mouth, second port and third port are connected with main road coupler, branch coupler and balance photoamplifier respectively, wherein institute
Second port is stated to be connected with first port and third port respectively by two signaling interfaces.
One reference arm of the multiple optic path units shared as a preferred technical solution, each optic path list
The branch coupler of member passes through optical fiber and is connected with reference arm.
The signal light that the sample arm of the multiple optic path unit issues as a preferred technical solution, scans more respectively
A different search coverage.
The utility model method has the advantages that
(1) optical signal is divided into multichannel and is scanned by the utility model, and bigger scanning can be realized within the set time
Range；
(2) the utility model realizes the signal light of sample arm while the subarea-scanning to sample, can be in fixed range
Use shorter sweep time；
(3) the utility model can be realized is changed without in swept light source, under the premise of system cost increases no more than 30%,
Scanning speed is promoted more times.
Detailed description of the invention
Fig. 1 is that there are two optic path lists for a kind of single light source multichannel subregion frequency sweep OCT system tool provided by the utility model
The structural schematic diagram of member.
Fig. 2 is that there are three optic path lists for a kind of single light source multichannel subregion frequency sweep OCT system tool provided by the utility model
The structural schematic diagram of member.
In figure: swept light source 1, main road coupler 2, calibration unit 3, data acquisition module 4, data processing module 5, annular
Device 6, branch coupler 7, sample arm 8, reference arm 9, balance photoamplifier 10, first port 11, second port 12, third end
Mouth 13 and search coverage 14.
Specific embodiment
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
Embodiment 1
As shown in Figure 1, the utility model provides a kind of single light source multichannel subregion frequency sweep OCT system, comprising: swept light source 1,
Main road coupler 2, data acquisition module 4, data processing module 5, reference arm 9 and two optic path units, swept light source 1 are logical
It crosses optical fiber to be connected with main road coupler 2, there are three output ports for main road coupler 2, respectively by optical fiber and calibration unit 3 and often
The circulator 6 of a optic path unit is connected.Each optic path unit includes: circulator 6, branch coupler 7, sample arm 8
With balance photoamplifier 10, circulator 6 is connect respectively with balance photoamplifier 10 and branch coupler 7 by optical fiber, is propped up
Road coupler 7 is connected with sample arm 8 and reference arm 9 by optical fiber respectively again, and each balance photoamplifier 10 is electrically connected to
Data acquisition module 4, data acquisition module 4 are connected with data processing module 5.Main road coupler 2 is connected with calibration by optical fiber
Unit 3, calibration unit 3 are connected to data acquisition module 4 by conducting wire.
Further, optical signal is easy loss under the peptizaiton of main road coupler 2, therefore in 2 He of main road coupler
Circulator 6 is set to reduce loss, circulator 6 has first port 11, second port 12 and third end between branch coupler 7
Mouth 13, the first to three port are connected with main road coupler 2, branch coupler 7 and balance photoamplifier 10 respectively, second port
12 are connected with first port 11 and third port 13 respectively by two signaling interfaces, and transmitting of the signal in circulator 6 is
Unidirectional delivery goes out from first port 11 into second port 12 and second port 12 goes out into third port 13.Two optic path lists
Member shares a reference arm 9, and the branch coupler 7 of each optic path unit is connected by optical fiber with reference arm 9, Neng Goubao
Card guarantees the efficiency of system in the case where equipment cost is minimum.
Further, the signal optical scanning that the sample arm 8 of each optic path unit issues it is corresponding two it is different
Search coverage 14 can realize bigger scanning range, in fixed range, when realizing shorter scanning within the set time
Between, to promote signal noise ratio (snr) of image.
The utility model provides a kind of subregion frequency sweep implementation method of single light source multichannel subregion frequency sweep OCT system, comprising: sweeps
Frequency sweep optical signal is transmitted through the fiber to main road coupler 2 by frequency light source 1；Main road coupler 2 is by sweep light signal decomposition at more
Road optical signal is transmitted to multiple optic path units again, every annular of the optical signal from each optic path unit all the way after decomposition
The first port 11 of device 6 inputs, then exports from the second port 12 of circulator 6 to branch coupler 7, and branch coupler 7 again will
Optical signal resolves into two-way and exports to sample arm 8 and reference arm 9；The corresponding search coverage of signal optical scanning that sample arm 8 issues
14 and return detection optical signal to branch coupler 7, with reference to arm 9 referring back to optical signal to branch coupler 7；Reference light
Signal carries out interference to detection optical signal in branch coupler 7 and forms coupling optical signal；Optical signal is coupled from circulator 6 second
Port 12 inputs, then is exported from the third port 13 of circulator 6 to balance photoamplifier 10 with lowest loss；Balance photoelectricity is put
Big device 10 is converted into analog electrical signal for optical signal is coupled, then analog electrical signal is output to data acquisition module 4 by conducting wire
Input terminal；Data acquisition module 4 converts digital electric signal for analog electrical signal again, and be sent to data processing module 5 into
Row calculation processing ultimately generates image corresponding with search coverage 14.Wherein, the spy of branch coupler 7 is back to sample arm 8
The reference optical signal that light signal is interfered is the reference optical signal that the same reference arm 9 returns.
The output end of main road coupler 2 is connected with calibration unit 3, and calibration unit 3 issues the output end of main road coupler 2
Light signal be converted into sampling electric signal, the acquisition of data acquisition module 4 sampling electric signal and balance photoamplifier 10 are sent
Next signal is simultaneously sent to data processing module 5, and data processing module 5 sends out balance photoamplifier 10 by sampling electric signal
The signal sent is corrected, and resampling is carried out using sampling electric signal, according to each pixel on output image in input picture
In position carry out the interpolation arithmetic of brightness value to original image by certain regular resampling, image restored, protect
Demonstrate,prove the accuracy of image.
Embodiment 2
The utility model provides a kind of single light source multichannel subregion frequency sweep OCT system that provides, structure and one base of embodiment
This is identical, and difference is, on the basis of example 1, and increases following characteristics, is made that further improvement, improves
The service performance of the utility model.
As shown in Fig. 2, optic path unit is 3, the signal optical scanning that the sample arm 8 of each optic path unit issues
Corresponding three different search coverages 14, can be within the set time, and the range of scanning is bigger, in fixed range, scanning
Time it is shorter.It can be realized under the premise of system cost increases and is no more than 30%, scanning speed promoted more times.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (6)
1. a kind of single light source multichannel subregion frequency sweep OCT system, which is characterized in that the multichannel subregion frequency sweep OCT system includes: to sweep
Frequency light source (1), main road coupler (2), data acquisition module (4), data processing module (5), reference arm (9) and multiple optical paths pass
Defeated unit, each optic path unit include: circulator (6), branch coupler (7), sample arm (8) and balance photoamplifier
(10), the swept light source (1) is connected by optical fiber with main road coupler (2), and main road coupler (2) is distinguished by a plurality of optical fiber
Be connected to the circulator (6) of each optic path unit, circulator (6) by optical fiber respectively with balance photoamplifier (10) and
Branch coupler (7) connection, branch coupler (7) are connected with sample arm (8) and reference arm (9) respectively by optical fiber, Mei Geping
Weighing apparatus photoamplifier (10) is electrically connected to data acquisition module (4), data acquisition module (4) and data processing module (5) phase
Even.
2. a kind of single light source multichannel subregion frequency sweep OCT system as described in claim 1, which is characterized in that the main road coupling
The signal output port of device (2) is connected with calibration unit (3) by optical fiber, the signal output connection of the calibration unit (3)
To data acquisition module (4).
3. a kind of single light source multichannel subregion frequency sweep OCT system as described in claim 1, which is characterized in that the main road coupling
Device (2) includes at least three signal output ports, at least three signal output ports pass through respectively optical fiber and calibration unit (3) and
At least two optic path units are connected.
4. a kind of single light source multichannel subregion frequency sweep OCT system as described in claim 1, which is characterized in that the circulator (6)
With first port (11), second port (12) and third port (13), first port (11), second port (12) and third end
Mouth (13) is connected with main road coupler (2), branch coupler (7) and balance photoamplifier (10) respectively, wherein described second
Port (12) is connected with first port (11) and third port (13) respectively by two signaling interfaces.
5. a kind of single light source multichannel subregion frequency sweep OCT system as described in claim 1, which is characterized in that the multiple optical path
Transmission unit shares a reference arm (9), and the branch coupler (7) of each optic path unit passes through optical fiber and reference arm
(9) it is connected.
6. a kind of single light source multichannel subregion frequency sweep OCT system as described in claim 1, which is characterized in that the multiple optical path
The signal light that the sample arm (8) of transmission unit issues scans multiple and different search coverages (14) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820012515.7U CN209032317U (en) | 2018-01-04 | 2018-01-04 | A kind of single light source multichannel subregion frequency sweep OCT system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820012515.7U CN209032317U (en) | 2018-01-04 | 2018-01-04 | A kind of single light source multichannel subregion frequency sweep OCT system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209032317U true CN209032317U (en) | 2019-06-28 |
Family
ID=67027522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820012515.7U Expired - Fee Related CN209032317U (en) | 2018-01-04 | 2018-01-04 | A kind of single light source multichannel subregion frequency sweep OCT system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209032317U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108143395A (en) * | 2018-01-04 | 2018-06-12 | 南通奇铭影像科技有限公司 | A kind of single light source multichannel subregion frequency sweep OCT systems and its subregion frequency sweep implementation method |
-
2018
- 2018-01-04 CN CN201820012515.7U patent/CN209032317U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108143395A (en) * | 2018-01-04 | 2018-06-12 | 南通奇铭影像科技有限公司 | A kind of single light source multichannel subregion frequency sweep OCT systems and its subregion frequency sweep implementation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107831470B (en) | Visible light positioning method based on polarization and hardware system thereof | |
| US7518368B2 (en) | Device and method for optical transmission of magnetic resonance signals in magnetic resonance systems | |
| CN108387909A (en) | Regional environment based on laser radar net monitors system | |
| CN108923850B (en) | Parallel multi-channel optical module testing device for 40Gbs, 100Gbs and 120Gbs | |
| CN209032317U (en) | A kind of single light source multichannel subregion frequency sweep OCT system | |
| CN207923277U (en) | Mode multiplexing-based single polarization state optical fiber vibration sensing system | |
| CN113114367A (en) | Modular high-density digital optical fiber satellite-borne transceiving equipment | |
| CN105871459A (en) | Optical module test system applied to optical communication field | |
| CN103176154A (en) | Selection unit for magnetic resonance imaging system | |
| CN209605977U (en) | A kind of temperature-measuring system of distributed fibers containing auto-adaptive filter circuit | |
| CN105049797A (en) | Video signal remote transmission realizing method | |
| CN102384840A (en) | System for testing jumper wire with MPO connector | |
| CN108143395A (en) | A kind of single light source multichannel subregion frequency sweep OCT systems and its subregion frequency sweep implementation method | |
| CN101185293B (en) | Universal measurement or protection device | |
| CN205809284U (en) | A kind of radar data processing means | |
| CN110058228A (en) | A kind of new type compound array and system for mm-wave imaging technology | |
| CN103036822A (en) | Data transmission device and method of ultrasonic imaging system | |
| CN109951230A (en) | Medical health system based on visible light communication | |
| CN205785284U (en) | A kind of mode utilizing image to return carries out the detecting system of image acquisition | |
| CN205725757U (en) | A kind of optical module test system being applied to optical communication field | |
| CN205861793U (en) | Power supply state monitoring system | |
| CN212721728U (en) | Orthogonal frequency division multiplexing-based high-frequency response optical fiber hydrophone array detection system | |
| CN108523852A (en) | A kind of optical interference imaging system of frequency sweep OCT | |
| CN105911401A (en) | Power supply condition monitoring system | |
| CN207280584U (en) | A kind of distributed optical fiber sensor of segmented couples interference-type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190628 Termination date: 20210104 |