CN108418087B - C+L wave band super-fluorescent optical fiber light source - Google Patents
C+L wave band super-fluorescent optical fiber light source Download PDFInfo
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- CN108418087B CN108418087B CN201810380375.3A CN201810380375A CN108418087B CN 108418087 B CN108418087 B CN 108418087B CN 201810380375 A CN201810380375 A CN 201810380375A CN 108418087 B CN108418087 B CN 108418087B
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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
- H01S3/06795—Fibre lasers with superfluorescent emission, e.g. amplified spontaneous emission sources for fibre laser gyrometers
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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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
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- Optics & Photonics (AREA)
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Abstract
The invention discloses a C+L wave band super-fluorescent optical fiber light source, which comprises a branch isolator, a broadband coupler, an erbium-doped optical fiber group, a wavelength division multiplexer and a pump laser, wherein the branch isolator is connected with the broadband coupler; the pumping light emitted by the pumping laser is incident to the erbium-doped optical fiber group and excites the erbium-doped optical fiber group to generate forward C-band super-fluorescence and backward C-band super-fluorescence; the forward C-band super-fluorescence is reversed after passing through the wavelength division multiplexer, the erbium-doped fibers in the erbium-doped fiber group are excited again to generate L-band super-fluorescence, the C-band super-fluorescence and the L-band super-fluorescence are coupled by the broadband coupler to obtain C+L-band super-fluorescence, and the C+L-band super-fluorescence is transmitted outwards through the branch isolator. The parallel structure of the erbium-doped optical fiber group is more convenient for the output C+L wave band super-fluorescence to have the characteristics of wide spectrum and high flatness by adjusting the length of the optical fiber, and meanwhile, the super-fluorescence optical fiber light source disclosed by the invention does not need to be filtered by a filter, so that the super-fluorescence optical fiber light source also has the characteristic of low cost.
Description
Technical Field
The invention relates to the technical field of light sources, in particular to a C+L wave band super-fluorescent optical fiber light source.
Background
The super-fluorescence directly output by the existing C+L wave band (C wave band: 1525 nm-1565 nm, L wave band: 1570 nm-1620 nm) super-fluorescence optical fiber light source has the characteristics of high flatness and wide spectrum width, and a filter is also needed to filter the super-fluorescence to realize the characteristics of high flatness and wide spectrum width, and the cost is increased by adopting the filter to filter the output super-fluorescence, so the super-fluorescence optical fiber light source capable of realizing high flatness and wide spectrum width and simultaneously having low cost is needed to be solved.
Disclosure of Invention
The invention mainly aims to provide a C+L wave band super-fluorescent optical fiber light source, which aims to solve the problems that in the existing super-fluorescent optical fiber light source, the output C+L wave band super-fluorescent light has high flatness, wide spectrum and low cost.
In order to achieve the above object, the present invention provides a c+l band super-fluorescent optical fiber light source, the super-fluorescent optical fiber light source comprising: branch isolator, broadband coupler, erbium-doped fiber group, wavelength division multiplexer and pump laser; the erbium-doped optical fiber group is composed of at least two erbium-doped optical fibers connected in parallel;
the branch isolator is connected with one end of the broadband coupler, two light splitting ends of the broadband coupler are connected with one end of the erbium-doped optical fiber group, and the other end of the erbium-doped optical fiber group is connected with the wavelength division multiplexer;
The pump light emitted by the pump laser is incident to the erbium-doped optical fiber group, the pump light excites the erbium-doped optical fiber group to generate first-direction C-band super-fluorescence and second-direction C-band super-fluorescence, the first direction is the direction from the erbium-doped optical fiber group to the broadband coupler, and the second direction is the direction from the erbium-doped optical fiber group to the wavelength division multiplexer; the second direction C wave band super fluorescence is reversed after passing through the wavelength division multiplexer, the erbium-doped optical fibers in the erbium-doped optical fiber group are excited again to generate the first direction L wave band super fluorescence, the broadband coupler is coupled with the first direction C wave band super fluorescence and the first direction L wave band super fluorescence to obtain the C+L wave band super fluorescence, and the C+L wave band super fluorescence is transmitted outwards through the branch isolator.
Optionally, a pump laser is connected to the first end of the branching isolator; the second end of the branch isolator is connected with one end of the broadband coupler; the C+L band super-fluorescence is transmitted outwards through the third end of the branch isolator; the pump light emitted by the pump laser is incident to the erbium-doped fiber group through the branch isolator and the broadband coupler.
Optionally, a pump laser is connected to the other end of the wavelength division multiplexer, and pump light emitted by the pump laser is incident to the erbium-doped fiber group through the wavelength division multiplexer.
Optionally, the pump laser is connected with a beam splitting coupling, a first beam splitting end of the beam splitting coupler is connected with a first end of the beam splitting isolator, and a second beam splitting end of the beam splitting coupler is connected with the other end of the wavelength division multiplexer; the second end of the branch isolator is connected with one end of the broadband coupler; the C+L band super-fluorescence is transmitted outwards through the third end of the branch isolator;
The pump light emitted by the pump laser is divided into first pump light and second pump light through the beam splitting coupler, the first pump light is emitted from the first beam splitting end and is incident to the erbium-doped optical fiber group through the branch isolator and the broadband coupler; the second pump light is emitted from the second light splitting end and is incident to the erbium-doped fiber group through the wavelength division multiplexer.
Optionally, the branch isolator, the broadband coupler, the erbium-doped fiber group, the wavelength division multiplexer and the pump lasers are connected by adopting an optical fiber fusion coupling mode
Advantageous effects
The invention provides a C+L wave band super-fluorescent optical fiber light source, which comprises a branch isolator, a broadband coupler, an erbium-doped optical fiber group, a wavelength division multiplexer and a pump laser; the branch isolator is connected with one end of the broadband coupler, the other end of the broadband coupler is connected with one end of the erbium-doped optical fiber group, and the other end of the erbium-doped optical fiber group is connected with the wavelength division multiplexer; the pump light emitted by the pump laser is incident to the erbium-doped optical fiber group, the pump light excites the erbium-doped optical fiber group to generate the first-direction C-band super-fluorescence and the second-direction C-band super-fluorescence, the first direction is the direction from the erbium-doped optical fiber group to the broadband coupler, and the second direction is the direction from the erbium-doped optical fiber group to the wavelength division multiplexer; the second direction C wave band super fluorescence is reversed after passing through the wavelength division multiplexer, the erbium-doped optical fibers in the erbium-doped optical fiber group are excited again to generate the first direction L wave band super fluorescence, the broadband coupler is coupled with the first direction C wave band super fluorescence and the first direction L wave band super fluorescence to obtain the C+L wave band super fluorescence, and the C+L wave band super fluorescence is transmitted outwards through the branch isolator. In the super-fluorescent optical fiber light source provided by the invention, the erbium-doped optical fiber group is at least composed of two parallel erbium-doped optical fibers, the parallel structure of the erbium-doped optical fiber group is more convenient for the output C+L wave band super-fluorescence to have the characteristics of high flatness and wide spectrum width by adjusting the optical fiber length, meanwhile, the C+L wave band super-fluorescent optical fiber light source provided by the invention can directly inhibit the emission peak of the light source at 1530nm and 1560nm by adjusting the optical fiber length, so that the emitted super-fluorescent spectrum has the characteristics of high flatness, wide spectrum width and low cost, and further, the super-fluorescent light at 1530nm and 1560nm is not required to be filtered by a filter, so that the super-fluorescent optical fiber light source provided by the C+L wave band super-fluorescent optical fiber light source provided by the invention has the characteristics of high flatness, wide spectrum width and low cost.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention and that other drawings may be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a C+L band super-fluorescent fiber light source according to a first embodiment of the present invention,
FIG. 2 is a schematic structural diagram of a C+L band super-fluorescent fiber light source according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a C+L band super-fluorescent fiber light source according to a third embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a c+l band super-fluorescent fiber light source according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention will be clearly described in conjunction with the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The C+L wave band super-fluorescent optical fiber light source provided by the invention can be applied to the fields of optical fiber communication, optical fiber sensing, optical imaging, optical device testing and the like. Referring to fig. 1, a first embodiment of a c+l band super fluorescent fiber light source provided by an embodiment of the present invention is shown, and it should be understood that the "nth embodiment" is adopted herein to distinguish different embodiments, and the number of the embodiments of the present invention is not limited by the above "N". The respective members and the relationship between the members in the first embodiment are described in detail as follows:
The C+L band super-fluorescent optical fiber light source provided by the first embodiment of the invention comprises: the device comprises a branch isolator, a broadband coupler, an erbium-doped optical fiber group, a wavelength division multiplexer and a pump laser, wherein the branch isolator is connected with one end of the broadband coupler, the other end of the broadband coupler is connected with one end of the erbium-doped optical fiber group, and the other end of the erbium-doped optical fiber group is connected with the wavelength division multiplexer. The erbium-doped fiber group is composed of at least two erbium-doped fibers connected in parallel.
Before describing the process of generating super fluorescence by the light source, the transmission direction of the pump light is described: the direction from the erbium-doped fiber group to the broadband coupler is set as a first direction, and the direction from the erbium-doped fiber group to the wavelength division multiplexer is set as a second direction, and the process of generating the super fluorescence by the c+l band super fluorescence fiber light source provided by the embodiment is described below: the pumping light emitted by the pumping laser is incident to the erbium-doped optical fiber group and excites the erbium-doped optical fibers in the erbium-doped optical fiber group to generate C-band super-fluorescence in a first direction and C-band super-fluorescence in a second direction, the C-band super-fluorescence in the first direction is transmitted to the broadband coupler, the C-band super-fluorescence in the second direction is transmitted to the wavelength division multiplexer, the C-band super-fluorescence in the second direction is reversely transmitted after passing through the wavelength division multiplexer, and the erbium-doped optical fibers in the erbium-doped optical fiber group are excited again to generate L-band super-fluorescence transmitted in the first direction and L-band super-fluorescence transmitted in the second direction. And finally, coupling the transmitted C-band super-fluorescence and L-band super-fluorescence by the broadband coupler to obtain C+L-band super-fluorescence, wherein the coupled C+L-band super-fluorescence is transmitted outwards through the branch isolator to form the C+L-band super-fluorescence with high flatness and wide bandwidth output by the light source. It should be understood that the broadband coupler in this embodiment can split the pump light transmitted to the broadband coupler into two pump light beams, and meanwhile, the broadband coupler can also couple the super fluorescence of the C-band and the L-band, that is, the wavelength range of the spectral coupling includes the pump wavelength and the c+l-band wavelength.
In a second embodiment, the pump laser is connected to a first end of a branching isolator, see fig. 2. It should be understood that the branch isolator is a passive device that allows light to pass in one direction and prevents light from passing in the opposite direction, and is used for limiting the direction of the light, so that the light can only be transmitted in one direction, and the light reflected by the optical fiber echo can be well isolated by the optical isolator, thereby improving the light wave transmission efficiency. In the invention, the branch isolator is provided with three ends, the first end of the branch isolator is connected with the pump laser, the pump laser can be used for inputting pump light through the port, the pump light is inputted into the erbium-doped optical fiber group after passing through the branch isolator and the broadband coupler, and the erbium-doped optical fibers in the erbium-doped optical fiber group are excited; the second end of the branch isolator is connected with the broadband coupler, and the incident pump light can be transmitted to the broadband coupler through the second end, and meanwhile, the C+L wave band super-fluorescence transmitted from the first direction can also be transmitted to the branch isolator through the second end; the third end of the branch isolator is the output end of the light source. The light path in the c+l band super-fluorescent fiber light source provided in this embodiment is described herein: the pumping light emitted by the pumping laser is incident into the erbium-doped optical fiber group through the branch isolator and the broadband coupler, the erbium-doped optical fibers in the erbium-doped optical fiber group are excited to generate C-band super-fluorescence in the first direction and C-band super-fluorescence in the second direction, the C-band super-fluorescence in the first direction is transmitted to the broadband coupler, the C-band super-fluorescence in the second direction is transmitted to the wavelength division multiplexer, the wavelength division multiplexer is reversely transmitted, the erbium-doped optical fibers in the erbium-doped optical fiber group are excited again to generate L-band super-fluorescence transmitted in the first direction and L-band super-fluorescence transmitted in the second direction, finally, the broadband coupler is used for coupling the C-band super-fluorescence and the L-band super-fluorescence to obtain C+L-band super-fluorescence, the C+L-band super-fluorescence obtained through coupling is transmitted outwards through the third end of the branch isolator, and the C+L-band super-fluorescence with high flatness and wide bandwidth output by the light source is formed.
In a third embodiment, referring to fig. 3, the pump light emitted by the pump laser is incident to the erbium-doped optical fiber group through the wavelength division multiplexer, excites the erbium-doped optical fibers in the erbium-doped optical fiber group, generates the C-band super-fluorescence in the first direction and the C-band super-fluorescence in the second direction, the C-band super-fluorescence in the first direction is transmitted to the broadband coupler, the C-band super-fluorescence in the second direction is transmitted to the wavelength division multiplexer, reversely transmitted through the wavelength division multiplexer, and excites the erbium-doped optical fibers in the erbium-doped optical fiber group again to generate the L-band super-fluorescence transmitted in the first direction and the L-band super-fluorescence transmitted in the second direction, and finally, the broadband coupler couples the C-band super-fluorescence and the L-band super-fluorescence to obtain the c+l-band super-fluorescence, and the c+l-band super-fluorescence obtained by coupling is transmitted outwards through the third end of the branching isolator, so as to form the c+l-band super-fluorescence with high flatness and wide bandwidth output by the light source.
In a fourth embodiment, the pump laser is connected to a split coupling, a first split end of the split coupler is connected to a first end of the split isolator, and a second split end of the split coupler is connected to the other end of the wavelength division multiplexer, see fig. 4. It should be understood that the splitting coupler is a coupler that splits only for the pump wavelength, unlike the broadband coupler described above. The second end of the branch isolator is connected to one end of the broadband coupler, as in the connection of the ports of the branch isolator in the first embodiment, and the resultant superfluorescence is transmitted outwards through the third end thereof. In a third embodiment, the pump light emitted by the pump laser is divided into a first pump light and a second pump light by the beam splitting coupler, the first pump light is emitted from the first beam splitting end and is incident to the erbium-doped fiber group by the branch isolator and the broadband coupler; the second pump light is emitted from the second light splitting end and is incident to the erbium-doped optical fiber group through the wavelength division multiplexer. It should be understood that the power of the first pump light and the power of the second pump light split by the split optical coupler can be adjusted. The light path in the c+l band super-fluorescent fiber light source provided in this embodiment is described herein: the method comprises the steps that pump light emitted by a pump laser is split by a splitting coupler to form first pump light and second pump light, the first pump light is incident into an erbium-doped optical fiber group through a branch isolator and a broadband coupler, erbium-doped optical fibers in the erbium-doped optical fiber group are excited to generate C-band super-fluorescence in a first direction and C-band super-fluorescence in a second direction, the C-band super-fluorescence in the first direction is transmitted to the broadband coupler, the C-band super-fluorescence in the second direction is transmitted to a wavelength division multiplexer, and is reversely transmitted after passing through the wavelength division multiplexer, and the erbium-doped optical fibers in the erbium-doped optical fiber group are excited again to generate L-band super-fluorescence transmitted to the first direction and L-band super-fluorescence transmitted to the second direction; the second pumping light is incident into the erbium-doped optical fiber group through the wavelength division multiplexer, excites the erbium-doped optical fibers in the erbium-doped optical fiber group, generates C-band super-fluorescence in the first direction and C-band super-fluorescence in the second direction, the C-band super-fluorescence in the first direction is transmitted to the broadband coupler, the C-band super-fluorescence in the second direction is transmitted to the wavelength division multiplexer, reversely transmitted through the wavelength division multiplexer, and excites the erbium-doped optical fibers in the erbium-doped optical fiber group again to generate L-band super-fluorescence transmitted in the first direction and L-band super-fluorescence transmitted in the second direction. And finally, coupling the transmitted C-band super-fluorescence and L-band super-fluorescence by the broadband coupler to obtain C+L-band super-fluorescence, wherein the coupled C+L-band super-fluorescence is transmitted outwards through the third end of the branch isolator to form the C+L-band super-fluorescence with high flatness and wide bandwidth output by the light source.
In other examples of the above embodiments, the branch isolators, the broadband couplers, the erbium doped fiber groups, the wavelength division multiplexers, and the pump lasers are connected by fusion-splicing.
It is to be understood that by optimizing the pumping power of the pumping laser and the lengths of the two erbium-doped fibers connected in parallel in the super-fluorescent fiber light source provided by the invention, the super-fluorescent fiber light source can output super-fluorescence with high flatness and wide bandwidth, meanwhile, no filter is used in the invention, the emission peaks at 1530nm and 1560nm of the erbium-doped fiber can be restrained directly through internal gain adjustment to enable the spectrum to be highly flat, and meanwhile, the invention eliminates the reflector which is necessary in the traditional structure, so that the structure is simpler, the size of the light source is reduced, and the cost is reduced.
It should be noted that, for the sake of simplicity of description, the foregoing method embodiments are all expressed as a series of combinations of actions, but it should be understood by those skilled in the art that the present invention is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily all required for the present invention.
In the foregoing embodiments, the details of each embodiment are focused on, and reference may be made to the related description of other embodiments in a portion of this embodiment, where the foregoing embodiment numbers of the present invention are merely for illustration, and do not represent advantages or disadvantages of the embodiments, and those skilled in the art may make many forms without departing from the spirit of the invention and the scope of the claims.
Claims (2)
1. A c+l band super-fluorescent fiber light source, the super-fluorescent fiber light source comprising: branch isolator, broadband coupler, erbium-doped fiber group, wavelength division multiplexer and pump laser; the erbium-doped optical fiber group is composed of at least two erbium-doped optical fibers connected in parallel;
The branch isolator is connected with one end of the broadband coupler, the other end of the broadband coupler is connected with one end of the erbium-doped optical fiber group, and the other end of the erbium-doped optical fiber group is connected with the wavelength division multiplexer; the broadband coupler can split the transmitted pump light into two pump light beams, and the wavelength range of the split coupling comprises pump wavelength and C+L wave band wavelength;
the pump light emitted by the pump laser is incident to the erbium-doped optical fiber group, the pump light excites the erbium-doped optical fiber group to generate first-direction C-band super-fluorescence and second-direction C-band super-fluorescence, the first direction is the direction from the erbium-doped optical fiber group to the broadband coupler, and the second direction is the direction from the erbium-doped optical fiber group to the wavelength division multiplexer; the second-direction C-band super-fluorescence is reversed after passing through the wavelength division multiplexer, the erbium-doped optical fibers in the erbium-doped optical fiber group are excited again to generate first-direction L-band super-fluorescence, the broadband coupler is coupled with the first-direction C-band super-fluorescence and the first-direction L-band super-fluorescence to obtain C+L-band super-fluorescence, and the C+L-band super-fluorescence is transmitted outwards through the branch isolator;
the pump laser is connected with the beam-splitting coupler, a first beam-splitting end of the beam-splitting coupler is connected with the first end of the branch isolator, and a second beam-splitting end of the beam-splitting coupler is connected with the other end of the wavelength division multiplexer; the second end of the branch isolator is connected with one end of the broadband coupler; the C+L band super fluorescence is transmitted outwards through the third end of the branch isolator;
The pump light emitted by the pump laser is divided into first pump light and second pump light through the beam splitting coupler, the first pump light is emitted from the first beam splitting end and is incident to the erbium-doped fiber group through the branch isolator and the broadband coupler; the second pump light is emitted from the second light splitting end and is incident to the erbium-doped optical fiber group through the wavelength division multiplexer.
2. The c+l band super fluorescent fiber optic light source of claim 1, wherein the branch isolator, broadband coupler, erbium doped fiber group, wavelength division multiplexer, and pump laser are connected by fusion coupling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810380375.3A CN108418087B (en) | 2018-04-25 | 2018-04-25 | C+L wave band super-fluorescent optical fiber light source |
| PCT/CN2019/081513 WO2019205915A1 (en) | 2018-04-25 | 2019-04-04 | C+l waveband superfluorescence optical fiber light source |
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| CN201810380375.3A CN108418087B (en) | 2018-04-25 | 2018-04-25 | C+L wave band super-fluorescent optical fiber light source |
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| CN108418087B true CN108418087B (en) | 2024-10-11 |
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| CN108418087B (en) * | 2018-04-25 | 2024-10-11 | 深圳技术大学 | C+L wave band super-fluorescent optical fiber light source |
| CN108923260A (en) * | 2018-08-23 | 2018-11-30 | 武汉英飞华科技有限公司 | A kind of super-radiance light emitting diode wideband light source |
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| CN2596389Y (en) * | 2002-09-30 | 2003-12-31 | 武汉光迅科技有限责任公司 | Wide band ASE light source of new structure |
| CN208299190U (en) * | 2018-04-25 | 2018-12-28 | 深圳技术大学（筹） | A kind of C+L wave band superfluorescent fiber sources |
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| KR100474721B1 (en) * | 2002-12-11 | 2005-03-10 | 삼성전자주식회사 | Wideband amplifiers using erbium-doped fiber |
| CN1599283B (en) * | 2004-08-30 | 2010-09-29 | 南京大学 | High-power, high-flatness long-wavelength erbium-doped fiber superfluorescent light source |
| CN1901410A (en) * | 2006-07-11 | 2007-01-24 | 无锡市中兴光电子技术有限公司 | High flat degree wide band super fluorescence light source |
| CN103618202B (en) * | 2013-12-09 | 2016-01-27 | 北京信息科技大学 | A kind of broadband light source system adopting C-band Er-doped fiber to produce C+L wave band |
| CN103618201B (en) * | 2013-12-09 | 2016-06-08 | 北京信息科技大学 | A kind of height smooth C+L band broadband light source of single-ended pumping spectrally compensating |
| CN204391489U (en) * | 2014-09-24 | 2015-06-10 | 嘉兴学院 | A kind of er-doped wideband light source of C+L wave band of low cost |
| CN204333587U (en) * | 2015-01-21 | 2015-05-13 | 北京交通大学 | A light path structure for erbium-doped fiber spontaneous emission light source |
| CN107887786A (en) * | 2017-12-28 | 2018-04-06 | 北京信息科技大学 | A kind of superfluorescent fiber sources based on the injection of wide range flashlight |
| CN108418087B (en) * | 2018-04-25 | 2024-10-11 | 深圳技术大学 | C+L wave band super-fluorescent optical fiber light source |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2596389Y (en) * | 2002-09-30 | 2003-12-31 | 武汉光迅科技有限责任公司 | Wide band ASE light source of new structure |
| CN208299190U (en) * | 2018-04-25 | 2018-12-28 | 深圳技术大学（筹） | A kind of C+L wave band superfluorescent fiber sources |
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