CN106785860A - Self-stabilising frequency domain mode-locked laser based on frequency self-reaction - Google Patents
Self-stabilising frequency domain mode-locked laser based on frequency self-reaction Download PDFInfo
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- CN106785860A CN106785860A CN201611132330.1A CN201611132330A CN106785860A CN 106785860 A CN106785860 A CN 106785860A CN 201611132330 A CN201611132330 A CN 201611132330A CN 106785860 A CN106785860 A CN 106785860A
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- self
- frequency
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- locked laser
- frequency domain
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1106—Mode locking
Abstract
A kind of self-stabilising frequency domain mode-locked laser based on frequency self-reaction proposed by the present invention, belong to optic electronics equipment technical field, including one is sequentially connected the optical loop for constituting by image intensifer, the first optoisolator, the first output coupler, the second output coupler, tunable optical bandpass filter, time delay optical fiber and the second optoisolator；Characterized in that, the frequency domain mode-locked laser also includes that one is sequentially connected the frequency self-reaction optoelectronic oscillation branch road for constituting by photodetector, electric narrow band filter and electric amplifier；Wherein, the output end of the first output coupler as the frequency domain mode-locked laser output end, the photodetector input of frequency self-reaction optoelectronic oscillation branch road is connected with the second output coupler output end of optical loop, and the electric amplifier output end of frequency self-reaction optoelectronic oscillation branch road is connected with the tunable optical bandpass filter input of optical loop；The present invention has the advantages that stability is high and with low cost.
Description
Technical field
The invention belongs to optic electronics equipment technical field, and in particular to a kind of self-stabilising based on frequency self-reaction
Frequency domain mode-locked laser.
Background technology
Frequency domain mode-locked laser (FDML) method is to realize an important channel of high speed frequency swept laser.Existing frequency domain lock
Mode laser is made up of image intensifer, tuning filtering device, time delay optical fiber and output coupler, and is driven by external frequency source
It is dynamic.These parts sequentially cascade cyclization using optical fiber, plus the telecommunications of the frequency that matches with time delay optical fiber on tuning filtering device
After number, output coupler is exportable sweep light signal.Due to FDML using optical fiber more long as caching, its stability is easily received
Influenceed to external environment, cost is also higher.
FDML vibrations need an external frequency source, have high requirement to the stability and precision of the frequency source, and it shakes
Swinging device needs temperature control and physical isolation, and tuning precision will reach mHz magnitudes, and output DA conversions need 20bit, such frequency
Rate source price accounts for the 50% of light source assembly sheet.When FDML is in mode-lock status, it is desirable to the eigenfrequency of FDML and outside frequency
The driving frequency in rate source is equal, will otherwise influence the indexs such as bandwidth, intensity, the coherence of output swept-frequency signal.But actual work
Make in environment, optical fiber more long causes loop-length condition sensitive to external world, temperature change and vibration can all cause loop
The off resonance of eigenfrequency and external frequency source, influences the long-time stability of FDML.
In sum, the problem of existing FDML is relatively costly, less stable.
The content of the invention
Weak point the invention aims to overcome prior art, proposes a kind of certainly steady based on frequency self-reaction
Sizing frequency domain mode-locked laser, the frequency domain mode-locked laser has the advantages that stability is high and with low cost.
A kind of self-stabilising frequency domain mode-locked laser based on frequency self-reaction proposed by the present invention, including one put by light
Big device, the first optoisolator, the first output coupler, the second output coupler, tunable optical bandpass filter, time delay optical fiber and
Second optoisolator is sequentially connected the optical loop of composition；Characterized in that, the frequency domain mode-locked laser also includes one by light
Electric explorer, electric narrow band filter and electric amplifier are sequentially connected the frequency self-reaction optoelectronic oscillation branch road of composition；Wherein,
The output end of first output coupler as the frequency domain mode-locked laser output end, the frequency self-reaction optoelectronic oscillation
The photodetector input of branch road is connected with the second output coupler output end of the optical loop, the frequency self-reaction
The electric amplifier output end of optoelectronic oscillation branch road is connected with the tunable optical bandpass filter input of the optical loop.
Advantage of the present invention compared to prior art：
1st, the driving frequency and loop eigenfrequency of FDML driving sources are consistent forever in the present invention, not by external environment condition
The influence of the FDML change of cavity length that change causes, thoroughly solves the problems, such as that the stability of FDML is poor.
2nd, the present invention expensive frequency driving source of one simple feedback circuitry instead with low cost, greatly reduces FDML
Cost.
Brief description of the drawings
Fig. 1 is the structural representation of the self-stabilising frequency domain mode-locked laser based on frequency self-reaction proposed by the present invention.
Specific embodiment
Self-stabilising frequency domain mode-locked laser based on frequency self-reaction proposed by the present invention, it is detailed with reference to drawings and Examples
Carefully it is described as follows：
The structure of the self-stabilising frequency domain mode-locked laser based on frequency self-reaction proposed by the present invention is as shown in Figure 1：
The frequency domain mode-locked laser is made up of an optical loop and a frequency self-reaction optoelectronic oscillation branch road；The optical loop is
The FDML loops of standard, by image intensifer 101 (image intensifer has DC driven), the first optoisolator 102-1, first defeated
Go out coupler 104-1, the second output coupler 104-2, tunable optical bandpass filter 106, a time delay optical fiber 103 and second
Optoisolator 102-2 passes sequentially through optical fiber connection composition；The frequency self-reaction optoelectronic oscillation branch road, by photodetector 111,
Electric narrow band filter 112 and electric amplifier 108 pass sequentially through optical fiber connection composition；Wherein, the first output of optical loop
Coupler 104-1 output ends 105 as the frequency domain mode-locked laser output end, the photoelectricity of frequency self-reaction optoelectronic oscillation branch road
The input of detector 111 is connected by optical fiber with the second output coupler 104-2 output ends of optical loop, frequency self-reaction light
The output end of electric amplifier 108 of electric oscillation branch road passes through optical fiber with the input of tunable optical bandpass filter 106 of optical loop
Connection.
Each device used of the invention is conventional products, and operation principle of the invention is as follows：
The FDML loops use conventional standard design, and its eigenfrequency is long by the chamber of the optical loop
Determine.Core innovative point of the invention, is the frequency self-reaction optoelectronic oscillation branch road；The input of this branch road is light electrical resistivity survey
Device 111 is surveyed, it can extract the natural oscillation of FDML loops frequently from the optical signal 109 of the second output coupler 104-2 transmittings
Rate, and electric signal 110 is converted into, this eigenfrequency is fed into centre frequency is approximately equal to the electric narrow of FDML loop eigenfrequencies
Band bandpass filter 112 in, electric narrow band filter 112 will receive purifying signal, electric narrow band filter 112 by export
High-purity sinusoidal signal is input in electric amplifier 108 and is amplified, and the driving as tunable optical bandpass filter 106 is defeated
Enter in the wave filter, with this realize FDML from main oscillations；When FDML loop-lengths change, FDML eigenfrequencies
Change can reflect in frequency self-reaction optoelectronic oscillation branch road automatically, so as to realize that self-stabilization works.Due to frequency self-reaction light
Electric oscillation branch route circuit element with low cost and constitutes, therefore the cost of this frequency domain mode-locked laser will be far below existing product
Product.
Claims (1)
1. a kind of self-stabilising frequency domain mode-locked laser based on frequency self-reaction, including one by image intensifer, the first light every
From device, the first output coupler, the second output coupler, tunable optical bandpass filter, time delay optical fiber and the second optoisolator
It is sequentially connected the optical loop of composition；Characterized in that, the frequency domain mode-locked laser is also narrow by photodetector, electricity including one
The frequency self-reaction optoelectronic oscillation branch road of composition is sequentially connected with bandpass filter and electric amplifier；Wherein, first output
The output end of coupler as the frequency domain mode-locked laser output end, the light electrical resistivity survey of the frequency self-reaction optoelectronic oscillation branch road
Survey device input to be connected with the second output coupler output end of the optical loop, the frequency self-reaction optoelectronic oscillation branch road
Electric amplifier output end be connected with the tunable optical bandpass filter input of the optical loop.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611132330.1A CN106785860A (en) | 2016-12-09 | 2016-12-09 | Self-stabilising frequency domain mode-locked laser based on frequency self-reaction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611132330.1A CN106785860A (en) | 2016-12-09 | 2016-12-09 | Self-stabilising frequency domain mode-locked laser based on frequency self-reaction |
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| CN106785860A true CN106785860A (en) | 2017-05-31 |
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|---|---|---|---|
| CN201611132330.1A Pending CN106785860A (en) | 2016-12-09 | 2016-12-09 | Self-stabilising frequency domain mode-locked laser based on frequency self-reaction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107302178A (en) * | 2017-06-26 | 2017-10-27 | 天津理工大学 | Regeneratively mode-locked fiber laser based on two-dimensional material photoelectric device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130329757A1 (en) * | 2005-01-20 | 2013-12-12 | Massachusetts Institute Of Technology | Fourier domain mode locking: method and apparatus for control and improved performance |
| CN103825171A (en) * | 2014-03-11 | 2014-05-28 | 天津理工大学 | Fourier locking mode optical fiber laser based on photon crystal fibers |
| CN103928834A (en) * | 2014-04-25 | 2014-07-16 | 北京交通大学 | Ultra-narrow line-width FDML ring-shaped laser based on SOA |
| CN104218437A (en) * | 2013-05-29 | 2014-12-17 | 青岛博光电子有限公司 | High-stability linear cavity sweep frequency laser light source |
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2016
- 2016-12-09 CN CN201611132330.1A patent/CN106785860A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130329757A1 (en) * | 2005-01-20 | 2013-12-12 | Massachusetts Institute Of Technology | Fourier domain mode locking: method and apparatus for control and improved performance |
| CN104218437A (en) * | 2013-05-29 | 2014-12-17 | 青岛博光电子有限公司 | High-stability linear cavity sweep frequency laser light source |
| CN103825171A (en) * | 2014-03-11 | 2014-05-28 | 天津理工大学 | Fourier locking mode optical fiber laser based on photon crystal fibers |
| CN103928834A (en) * | 2014-04-25 | 2014-07-16 | 北京交通大学 | Ultra-narrow line-width FDML ring-shaped laser based on SOA |
Non-Patent Citations (1)
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| KARTIKEYA MURARI 等: ""Self-starting, self-regulating Fourier domain mode locked fiber laser for OCT imaging"", 《BIOMEDICAL OPTICS EXPRESS》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107302178A (en) * | 2017-06-26 | 2017-10-27 | 天津理工大学 | Regeneratively mode-locked fiber laser based on two-dimensional material photoelectric device |
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Application publication date: 20170531 |