CN105896251B - Enhance the optical fiber array amplifier of light signal strength - Google Patents
Enhance the optical fiber array amplifier of light signal strength Download PDFInfo
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- CN105896251B CN105896251B CN201610341043.5A CN201610341043A CN105896251B CN 105896251 B CN105896251 B CN 105896251B CN 201610341043 A CN201610341043 A CN 201610341043A CN 105896251 B CN105896251 B CN 105896251B
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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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
-
- 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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
-
- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
Abstract
A kind of optical fiber array amplifier enhancing imaging system or communication system signal intensity, belongs to laser technology and optical fiber optical field.The invention mainly comprises coupled lens, dichroscope, fiber array, pumping source, optical filter and optical detectors.The present invention as gain media and designs enhancing of the two dimension arrangement shape realization of fiber array to signal light using the fiber array of rare earth doped element, invention is used as amplifier gain medium using a kind of fiber array based on rare earth doped element, realizes that the scheme of optical signal amplification realizes that the high intensity of array signal and the signal of high stability export and has the characteristics that high-resolution, high-power.
Description
Technical field
The invention discloses the optical fiber array amplifiers of a kind of enhancing imaging system or communication system signal intensity, belong to sharp
Light technology and optical fiber optical field.
Background technique
Optical fiber communication technology since the advent of the world obtains development at full speed in worldwide, fiber optic communication now at
For one of the nucleus module of communication network, fiber amplifier is because of it with high gain, with wide, light letter in energy compensated optical fiber route
Number decaying, be able to achieve large capacity signal long-distance transmission the characteristics of play an important role in Networks of Fiber Communications.
The application of image enhancement has penetrated into medical diagnosis, aerospace, military surveillance, fingerprint recognition, satellite at present
The fields such as the processing of picture.Such as endoscopic images are enhanced, make doctor be easier to see lesion region details clearly.
Fiber optical amplifier technology is exactly that the rare earth element that can generate laser gain is mixed in the fibre core of optical fiber, passes through pumping
The excitation in source, make by optical signal amplified.
Summary of the invention
In order to solve the problems, such as that array signal light amplification, invention use a kind of fiber array based on rare earth doped element
As amplifier gain medium, and the two dimension arrangement shape for designing fiber array realizes that the scheme of optical signal amplification realizes array letter
Number high intensity and the signal of high stability export, and the fiber array laser amplifier configurations are compact, small in size, cost
It is low.
To achieve the goals above, this invention takes following technical solutions.
A kind of two directional pump optical fiber array amplifier enhancing imaging system or communication system signal intensity, feature exist
In, mainly include pumping source, coupled lens, dichroscope, microlens array, fiber array, optical filter and optical detector,
One end of fiber array (4), including the first coupled lens (1), the first dichroscope (2), the first microlens array (3) and first
Pumping source (7)；The other end in fiber array (4), including the second microlens array (5), the second dichroscope (6), the second pump
Pu source (8), optical filter (9), the second coupled lens (10) and detector (11)；The signal light of input is through the first coupled lens
(1) it is transmitted the first dichroscope (2) after focusing, and focuses through the first microlens array (3) into fiber array (4) and increased
Benefit, amplified signal light transmits the second dichroscope (6) after the second microlens array (5) focus, through optical filter (9)
The second coupled lens (10) are converged to, the optical signal of amplification is then detected by detector (11).What the first pumping source (7) issued
Pump light is reflected into the first microlens array (3) through the first dichroscope, and fiber array (4) are entered after line focus and are mentioned for signal light
For pumping.The pump light that the second pumping source (8) issues simultaneously is reflected into the second microlens array (3) through the second dichroscope, is passed through
Enter fiber array (4) after focusing and provides pumping for signal light.
A kind of Pumped optical fiber array amplifier enhancing imaging system or communication system signal intensity, feature exist
In, mainly include pumping source, coupled lens, dichroscope, microlens array, fiber array, optical filter and optical detector,
One end of fiber array (4), including the first coupled lens (1), the first dichroscope (2), microlens array (3 ') and pumping source
(7')；The other end in fiber array (4), the second dichroscope (6), optical filter (9), the second coupled lens (10) and detection
Device (11)；The signal light of input transmits the first dichroscope (2) after the first coupled lens (1) focuses, and micro- through first
Lens array (3 '), which focuses, enters fiber array (4) progress gain, and amplified signal light transmits second after optical filter (9)
Dichroscope (6), and after the second coupled lens (10) focus, the optical signal of amplification is detected by detector (11).Pumping source
(7 ') pump light issued is reflected into the first microlens array (3 ') through the first dichroscope, and fiber array is entered after line focus
(4) pumping is provided for signal light, then is reflected away after filter (9) by the second dichroscope (6).
A kind of backward pumping optical fiber array amplifier enhancing imaging system or communication system signal intensity, feature exist
In, mainly include pumping source, coupled lens, dichroscope, microlens array, fiber array, optical filter and optical detector,
One end of fiber array (4) is the first coupled lens (1), the first dichroscope (2) and microlens array (3 ')；In fiber array
(4) the other end includes microlens array (3 '), the second dichroscope (6), pumping source (7 '), optical filter (9), the second coupling
Lens (10) and detector (11)；The signal light of input transmits the first dichroscope after the first coupled lens (1) focuses
(2), it and through the first microlens array (3 ') focuses and enters fiber array (4) and carry out gain, amplified signal light transmits the
Two dichroscopes (6) are focused after filter (9) by the second coupled lens (10), and the light amplified by detector (11)
Signal.The pump light that pumping source (7 ') issues is reflected into fiber array (4) through the second dichroscope (6) and provides pump for signal light
Pu, then reflected away after microlens array (3 ') focus by the first dichroscope (2).
Above-mentioned three kinds of pumping sources are gas laser, semiconductor laser, solid state laser or optical fiber laser, pump light
Central wavelength range are as follows: 400nm -2100nm；
Optical fiber in three kinds of fiber arrays (4) in optical fiber sheath body is single cladded-fiber or multi-clad, wherein double clad
The shape of the inner cladding of optical fiber is round, rectangular, hexagon, octagon or D-shaped；Optical fiber simultaneously
It can also be single mode optical fiber or touch optical fiber more.The outer shape of fiber array (4) can be rectangle, circle or triangle
Shape；Number of fibers is greater than 2；The arrangement of optical fiber is square or triangle in fiber array (4)；Fiber core in fiber array
It is the optical fiber or photonic crystal fiber mixed with rare earth element, wherein the rare earth element adulterated can be praseodymium (Pr), neodymium (Nd), holmium
(Ho), one or more of erbium (Er), thulium (Tm), ytterbium (Yb)；Gap resin or glass in fiber array between optical fiber
Material is as filled layer.
The coupled lens are single lens or lens group.
First, second dichroscope is at least 80% to the transmissivity of signal light, is at least to the reflectivity of pump light
80%.
Imaging system of the present invention or the optical fiber array amplifier of communication system signal enhancing, belong to laser technology and optical fiber light
Field.The invention mainly comprises coupled lens, dichroscope, fiber array, pumping source, optical filter and optical detectors.This
Invention realizes the enhancing to signal light using the fiber array of rare earth doped element as gain media, has high-resolution, height
The characteristics of power.Relative to traditional fiber amplifier, have the characteristics that imaging resolution is high.The structure designs simple, structure
Signal strength compact, that imaging system or communication system can be effectively improved.Compared to the prior art, the present invention has following excellent benefit
Effect: the amplification of array signal light may be implemented.The present invention is by the fiber array of doped gain fiber as gain media
The gain intensity for increasing output signal realizes high-intensitive and high stability signal and exports.The configuration of the present invention is simple, operation
It is easy, is low in cost, gain amplifier is high, and the structure of fiber array increases structural stability, while reducing the volume of laser.
Detailed description of the invention
Fig. 1 is the two directional pump optical fiber array amplifier signal that example 1 enhances imaging system or communication system signal intensity
Figure；
Fig. 2 is the Pumped optical fiber array amplifier signal that example 2 enhances imaging system or communication system signal intensity
Figure；
Fig. 3 is the backward pumping optical fiber array amplifier signal that example 3 enhances imaging system or communication system signal intensity
Figure；
In figure: 1, the first coupled lens；2, the first dichroscope；3, the first microlens array；4, fiber array；5, second
Microlens array；6, the second dichroscope；7, the first pumping source；8, the second pumping source；9, optical filter；10, the second coupling is saturating
Mirror；11, optical detector；3 ', first microlens array；7 ', pumping source.
Wherein the right is corresponding light array schematic diagram in Fig. 1-3.
Specific embodiment
Below with reference to diagram, the present invention will be further described, but is not only limited to following several case study on implementation.
Embodiment 1
The two directional pump optical fiber array amplifier schematic diagram of enhancing imaging system or communication system signal intensity is shown in Fig. 1, believes
The central wavelength of number light is that 2000nm signal light is focused by coupling the first lens (1), and wherein coupled lens can be single
A lens or lens group.Signal light after over-focusing is incident upon on the first dichroscope (2), and wherein dichroscope is to signal light
Transmissivity be 80%；And focused through the first microlens array (3) and enter fiber array (4) progress gain, in fiber array
Optical fiber arrangement is rectangular, and adjacent fiber positional relationship is square, and optical fiber is the doubly clad optical fiber for peelling off coat, inner cladding
Shape is octagon type.Amplified signal light transmits the second dichroscope (6) after the second microlens array (5) focus,
The second coupled lens (10) are converged to through optical filter (9), the optical signal of amplification is then detected by detector (11).First pump
Pu source (7) select central wavelength be 793nm fiber coupling export semiconductor laser diode, pumping laser through the one or two to
Look mirror (2) is reflected on microlens array (3), and wherein dichroscope is 80% to the reflectivity of pump light.Through microlens array
(3) it focuses and enters fiber array, gain is carried out to signal light.The second pumping source (8) of the fiber array other end is also selected simultaneously
The semiconductor laser diode that the fiber coupling that central wavelength is 793nm exports, the pump light issued is through the second dichroscope
(6) it is reflected on microlens array (5), fiber array (4) is projected after line focus, gain is carried out to signal light.
Embodiment 2
The Pumped optical fiber array amplifier for enhancing imaging system or communication system signal intensity illustrates graph Fig. 2, in
The a length of 1550nm signal light of cardiac wave through the first coupled lens (1) focus after transmit the first dichroscope (2), wherein the one or two to
Look mirror (2) is 81% to the transmissivity of signal light；It focuses through the first microlens array (3 ') into fiber array (4) and is increased again
Benefit, the optical fiber arrangement in fiber array is rectangular, and adjacent fiber positional relationship is triangle, and optical fiber is peel off coat double
Cladded-fiber, core shape are hexagon；Amplified signal light transmits the second dichroscope (6) after optical filter (9),
And after the second coupled lens (10) focus, the optical signal of amplification is detected by detector (11).Pumping source (7 ') selects center
The semiconductor laser diode that the fiber coupling that wavelength is 980nm exports, it is micro- that pump light through the first dichroscope is reflected into first
Lens array (3 '), wherein dichroscope is 81% to the reflectivity of pump light, enters light after microlens array (3 ') focus
Fibre array (4) provides pumping for signal light, then is reflected away after filter (9) by the second dichroscope (6).
Embodiment 3
The backward pumping optical fiber array amplifier for enhancing imaging system or communication system signal intensity illustrates graph Fig. 3, letter
Number light is that center wavelength is that 1064nm signal light is focused by the first coupled lens (1), wherein condenser lens can for it is single thoroughly
Mirror or lens group.Signal after over-focusing, which transmits, carries out gain, optical fiber in the first dichroscope (2) to fiber array (4)
Optical fiber arrangement in array is rectangular, and adjacent fiber positional relationship is square, and optical fiber is the double clad light for peelling off coat
Fibre, inner cladding shape are D type.Amplified signal light transmits the second dichroscope (6), by the second coupling after filter (9)
It closes lens (10) to focus, and the optical signal amplified by detector (11).It is 915nm's that pumping source (7 '), which selects central wavelength,
The semiconductor laser diode of fiber coupling output, it is signal light that pump light, which is reflected into fiber array (4) through the first dichroscope,
Pumping is provided, then is reflected away after microlens array focuses by the first dichroscope (2), wherein dichroscope is to the anti-of pump light
Penetrating rate is 85%.
Claims (7)
1. the two directional pump optical fiber array amplifier of a kind of enhancing imaging system or communication system signal intensity, which is characterized in that
It include mainly pumping source, coupled lens, dichroscope, microlens array, fiber array, optical filter and optical detector, in light
One end of fibre array (4), including the first coupled lens (1), the first dichroscope (2), the first microlens array (3) and the first pump
Pu source (7)；The other end in fiber array (4), including the second microlens array (5), the second dichroscope (6), the second pumping
Source (8), optical filter (9), the second coupled lens (10) and detector (11)；The signal light of input is through the first coupled lens (1)
It is transmitted after focusing the first dichroscope (2), and is focused through the first microlens array (3) and enter fiber array (4) progress gain,
Amplified signal light transmits the second dichroscope (6) after the second microlens array (5) focus, through optical filter (9) meeting
Gather the second coupled lens (10), the optical signal of amplification is then detected by detector (11)；The pump that first pumping source (7) issues
Pu light is reflected into the first microlens array (3) through the first dichroscope, and fiber array (4) are entered after line focus and are provided for signal light
Pumping；The pump light that the second pumping source (8) issues simultaneously is reflected into the second microlens array (5) through the second dichroscope, through poly-
It is defocused to provide pumping into fiber array (4) for signal light；The signal light of input is array signal light.
2. the Pumped optical fiber array amplifier of a kind of enhancing imaging system or communication system signal intensity, which is characterized in that
It include mainly pumping source, coupled lens, dichroscope, microlens array, fiber array, optical filter and optical detector, in light
One end of fibre array (4), including the first coupled lens (1), the first dichroscope (2), the first microlens array (3 ') and pumping
Source (7 ')；It include the second dichroscope (6), optical filter (9), the second coupled lens (10) in the other end of fiber array (4)
With detector (11)；The signal light of input transmits the first dichroscope (2) after the first coupled lens (1) focuses, and through the
One microlens array (3 '), which focuses, enters fiber array (4) progress gain, and amplified signal light transmits after optical filter (9)
Second dichroscope (6) out, and after the second coupled lens (10) focus, the optical signal of amplification is detected by detector (11)；
The pump light that pumping source (7 ') issues is reflected into the first microlens array (3 ') through the first dichroscope, and optical fiber is entered after line focus
Array (4) provides pumping for signal light, then is reflected away after filter (9) by the second dichroscope (6)；The signal light of input is
Array signal light.
3. the backward pumping optical fiber array amplifier of a kind of enhancing imaging system or communication system signal intensity, which is characterized in that
It include mainly pumping source, coupled lens, dichroscope, microlens array, fiber array, optical filter and optical detector, in light
One end of fibre array (4) is the first coupled lens (1), the first dichroscope (2) and the first microlens array (3 ')；In optical fiber array
The other end for arranging (4) includes the second dichroscope (6), pumping source (7 '), optical filter (9), the second coupled lens (10) and visits
It surveys device (11)；The signal light of input transmits the first dichroscope (2) after the first coupled lens (1) focuses, and micro- through first
Lens array (3 '), which focuses, enters fiber array (4) progress gain, and amplified signal light transmits the second dichroscope (6),
It is focused after filter (9) by the second coupled lens (10), and the optical signal amplified by detector (11)；Pumping source (7 ')
The pump light of sending is reflected into fiber array (4) through the second dichroscope (6) and provides pumping for signal light, then through the first lenticule
Array (3 ') is reflected away after focusing by the first dichroscope (2)；The signal light of input is array signal light.
4. according to the pumping optical fiber array amplifier of any one of claim 1-3, which is characterized in that pumping source is gas laser
Device, semiconductor laser, solid state laser or optical fiber laser, the central wavelength range of pump light are as follows: 400nm -2100nm.
5. according to the pumping optical fiber array amplifier of any one of claim 1-3, which is characterized in that optical fiber in fiber array (4)
Optical fiber in sheath body is single cladded-fiber or multi-clad, wherein the shape of the inner cladding of doubly clad optical fiber be it is round, rectangular,
Hexagon, octagon or D-shaped；Optical fiber is single mode optical fiber or touches optical fiber more simultaneously；The outer shape of fiber array (4) be rectangle,
Round or triangle；Number of fibers is greater than 2；The arrangement of optical fiber is square or triangle in fiber array (4)；In fiber array
Fiber core be optical fiber or photonic crystal fiber mixed with rare earth element, wherein the rare earth element adulterated is praseodymium (Pr), neodymium
(Nd), one or more of holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb)；Gap resin in fiber array between optical fiber
Or glass material is as filled layer.
6. according to the pumping optical fiber array amplifier of any one of claim 1-3, which is characterized in that the coupled lens are single
A lens or lens group.
7. according to the pumping optical fiber array amplifier of any one of claim 1-3, which is characterized in that the first dichroscope, second
Dichroscope is at least 80% to the transmissivity of signal light, is at least 80% to the reflectivity of pump light.
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| CN112241091A (en) * | 2020-10-19 | 2021-01-19 | 重庆连芯光电技术研究院有限公司 | Array single photon frequency up-conversion device |
| CN115933276A (en) * | 2021-08-18 | 2023-04-07 | 华为技术有限公司 | Array type light amplification device |
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| CN1424793A (en) * | 2003-01-10 | 2003-06-18 | 中国科学院上海光学精密机械研究所 | Cylindrical-arranged pluse double-clad optical fibre amplifiers |
| CN101459313A (en) * | 2008-12-31 | 2009-06-17 | 华南理工大学 | Multiple wavelength outputting ultra-narrow wire single frequency optical fiber laser |
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| CN104868350A (en) * | 2014-02-25 | 2015-08-26 | 福州高意通讯有限公司 | High-power laser |
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| US7221499B2 (en) * | 2005-10-19 | 2007-05-22 | Northrop Grumman Corporation | Frequency scanned array control system |
| CN103155309B (en) * | 2010-10-29 | 2016-06-01 | 古河电气工业株式会社 | Optical amplification device and light conveying system |
| US9438004B2 (en) * | 2011-05-20 | 2016-09-06 | Alcatel Lucent | Optical pumping and powering in spatially multiplexed transmission links |
| US9263846B2 (en) * | 2011-10-05 | 2016-02-16 | University Of Central Florida Research Foundation, Inc. | Systems and methods for amplifying space-multiplexed optical signals |
| JP5823448B2 (en) * | 2013-06-21 | 2015-11-25 | 古河電気工業株式会社 | Multicore optical fiber device for amplification and multicore optical fiber amplifier |
| CN103701024B (en) * | 2013-12-20 | 2017-07-25 | 武汉光迅科技股份有限公司 | A kind of fiber amplifier based on multimode pump laser |
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|---|---|---|---|---|
| CN1424793A (en) * | 2003-01-10 | 2003-06-18 | 中国科学院上海光学精密机械研究所 | Cylindrical-arranged pluse double-clad optical fibre amplifiers |
| CN101939880A (en) * | 2008-02-07 | 2011-01-05 | Imra美国公司 | High-power directional light fibre array |
| CN101459313A (en) * | 2008-12-31 | 2009-06-17 | 华南理工大学 | Multiple wavelength outputting ultra-narrow wire single frequency optical fiber laser |
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