Supercontinuum Light Source Output Device

Abstract

This invention provides a supercontinuum light source output device, belonging to the field of fiber laser technology, comprising: an optical pump source, including a first optical pump source and a second optical pump source; a fiber filter, including a first fiber filter and a second fiber filter; a fiber combiner, including a first fiber combiner and a second fiber combiner; a gain fiber, including a first gain fiber and a second gain fiber; a fiber isolator; and an output module, including a first output module and a second output module. The supercontinuum light source output device provided by this invention utilizes a Mamyshev oscillator and an all-fiber structure to construct a device for outputting a supercontinuum and dual-band light source. A fiber isolator is placed between the gain fiber and the passive fiber, allowing the optical isolator to better perform its isolation function before the light spectrum broadens, thus reducing losses in the optical path.

Description

Technical Field

[0001] This application relates to the field of fiber laser technology, and in particular to a supercontinuum light source output device. Background Technology

[0002] Supercontinuum refers to the phenomenon where a strong, short pulse broadens its spectrum when it passes through a nonlinear medium due to a series of nonlinear effects and the group velocity dispersion of the optical fiber. Supercontinuum ultrashort pulse lasers typically have a spectral span exceeding one thousand nanometers and have a wide range of applications, such as dispersive confocal microscopy and white light interferometers.

[0003] Existing technology achieves supercontinuum ultrashort pulse laser output through Mamyshev oscillators and fiber optic structures. However, multiple optical isolators are placed in the optical path of the Mamyshev oscillator, increasing the loss in the optical path. Furthermore, the optical isolators are placed between the passive fiber, the output coupler, and the filter. The optical isolators themselves have a limited effective spectral width. Since the spectrum of light passing through the passive fiber is broadened, placing the optical isolators here significantly reduces the isolation effect; it also increases the loss, potentially preventing the Mamyshev oscillator from oscillating. Summary of the Invention

[0004] This application provides a supercontinuum light source output device to solve the technical problem of high optical path loss in the prior art.

[0005] This invention provides a supercontinuum light source output device, comprising:

[0006] An optical pump source includes a first optical pump source and a second optical pump source; the first optical pump source is used to output a first pump laser; the second optical pump source is used to output a second pump laser.

[0007] The fiber optic filter includes a first fiber optic filter and a second fiber optic filter; the first fiber optic filter is used to output a first narrowband laser, and the second fiber optic filter is used to output a second narrowband laser.

[0008] The fiber optic combiner includes a first fiber optic combiner and a second fiber optic combiner; the first fiber optic combiner is used to receive and couple the first pump laser and the first narrowband laser to form a first coupled laser; the second fiber optic combiner is used to receive and couple the second pump laser and the second narrowband laser to form a second coupled laser.

[0009] The gain fiber includes a first gain fiber and a second gain fiber; the first gain fiber is used to receive the first coupled laser, increase the pulse energy of the first coupled laser, and form a first high-intensity pulsed laser; the second gain fiber is used to receive the second coupled laser, increase the pulse energy of the second coupled laser, and form a second high-intensity pulsed laser.

[0010] A fiber optic isolator is used to receive the first high-intensity pulse laser, determine the propagation direction of the laser, and output unidirectional laser.

[0011] The output module includes a first output module and a second output module; the first output module is used to receive the unidirectional laser and output laser of the first band according to a preset ratio; the second output module is used to receive the second high-intensity pulse laser and output laser of the second band according to a preset ratio.

[0012] The input end of the first fiber optic filter is connected to the first output module; the input end of the second fiber optic filter is connected to the second output module.

[0013] According to the supercontinuum light source output device provided by the present invention, the center wavelengths of the first fiber optic filter and the second fiber optic filter are spaced apart in the band, and the filter passbands of the first fiber optic filter and the second fiber optic filter are spaced apart in the band.

[0014] According to the supercontinuum light source output device provided by the present invention, the fiber optic filter is also used to block laser light that has not undergone spectral broadening.

[0015] According to the present invention, a supercontinuum light source output device is provided, wherein the optical pump source is an externally modulated optical pump source or a directly modulated optical pump source.

[0016] According to a supercontinuum light source output device provided by the present invention, the first high-intensity pulsed laser is generated in the first regeneration arm of a Mamyshev oscillator; the second high-intensity pulsed laser is generated in the second regeneration arm of a Mamyshev oscillator.

[0017] According to the present invention, a supercontinuum light source output device is provided, wherein the first output module comprises:

[0018] The first fiber optic beam splitter is used to output a portion of the unidirectional laser according to a preset ratio;

[0019] A first highly nonlinear passive optical fiber is used to receive the unidirectional laser, broaden the spectrum of the unidirectional laser, and form a first broadband laser.

[0020] The second fiber optic beam splitter is used to receive the first broadband laser and output a portion of the first broadband laser according to a preset ratio.

[0021] According to the supercontinuum light source output device provided by the present invention, the first highly nonlinear passive optical fiber comprises one or more of the following optical fibers:

[0022] Tapered optical fiber;

[0023] Photonic crystal fiber;

[0024] Other optical fibers with high nonlinear coefficients.

[0025] According to the present invention, a supercontinuum light source output device is provided, wherein the first output module comprises:

[0026] The third fiber beam splitter is used to output a portion of the second high-intensity pulse laser according to a preset ratio;

[0027] The second highly nonlinear passive optical fiber is used to receive the second intense pulse laser, broaden the spectrum of the second intense pulse laser, and form a second broadband laser.

[0028] The fourth fiber optic beam splitter is used to receive the second broadband laser and output a portion of the second broadband laser according to a preset ratio.

[0029] According to the supercontinuum light source output device provided by the present invention, the second highly nonlinear passive optical fiber comprises one or more of the following optical fibers:

[0030] Tapered optical fiber;

[0031] Photonic crystal fiber;

[0032] Other optical fibers with high nonlinear coefficients.

[0033] According to the present invention, a supercontinuum light source output device is provided, wherein the fiber optic filter, the fiber optic combiner, the gain fiber, the fiber optic isolator, and the output module are polarization-preserving or non-polarization-preserving.

[0034] This invention provides a supercontinuum light source output device, which utilizes an optical pump source, optical fiber and optical fiber devices, and is based on a Mamyshev oscillator to construct a device for outputting supercontinuum and dual-band light sources. The optical fiber isolator is placed between the gain fiber and the passive fiber, so that the optical isolator can better perform its isolation function before the light spectrum is broadened, reducing the loss in the optical path and lowering the start-up energy threshold of the Mamyshev oscillator. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of a supercontinuum light source output device provided by the present invention;

[0037] Figure label:

[0038] 1: First optical pump source; 2: First fiber combiner; 3: First gain fiber; 4: Fiber optic isolator; 5: First fiber splitter; 6: First highly nonlinear passive fiber; 7:

[0039] 8: Second fiber beam splitter; 9: First fiber filter; 10: Second optical pump source; 11: Second fiber combiner; 12: Second gain fiber; 13: Third fiber beam splitter; 14: Second highly nonlinear passive fiber; 15: Fourth fiber beam splitter; 16: Second fiber filter. Detailed Implementation

[0040] The basic architecture of traditional supercontinuum ultrashort pulse laser sources is a classic three-stage structure of "oscillator-amplifier-spreading module". This structure has several disadvantages: firstly, the system modules are relatively complex, significantly increasing manufacturing costs; secondly, the performance of the amplifier and spreader module is highly dependent on the parameters and stability of the oscillator, and any changes to the oscillator inevitably require readjustment and correction of the amplifier and spreader module. Even with an all-fiber solution, the coordinated design between the three stages needs to be considered, further increasing manufacturing workload; thirdly, there is still potential for reducing the manufacturing cost and maintenance difficulty of the classic structure. Therefore, if a high-energy supercontinuum ultrashort pulse laser could be directly output from the oscillator, the disadvantages of the classic structure could be largely avoided.

[0041] Currently, the mode-locking (pulse sequence generation) mechanisms of ultrashort pulse fiber lasers are mainly divided into four types: mode-locking based on saturable absorber materials, nonlinear polarization rotation mode-locking, nonlinear (amplification) ring mirror mode-locking, and mode-locking based on Mamyshev pulse regenerators. Lasers based on Mamyshev pulse regenerator mode-locking are also called Mamyshev oscillators. Compared to ultrashort pulse fiber lasers with the other three mode-locking mechanisms, the Mamyshev oscillator itself can serve as a high-output energy seed source, directly generating ultrashort (picosecond or femtosecond timescale) pulse sequences with single-pulse energies of tens or even hundreds of nanojoules, eliminating the need for an amplification stage and significantly saving space and cost. In particular, all-fiber Mamyshev oscillators can be easily designed and fabricated as polarization-preserving types, and the all-fiber structure greatly improves the system's stability under temperature changes and mechanical vibrations, while also simplifying maintenance.

[0042] Mamyshev oscillators typically consist of a dual-arm structure, with each arm being a Mamyshev pulse regenerator. The two arms are usually connected in series to form a ring structure. The nonlinear effects of the pulse propagating in the optical fiber (such as self-phase modulation and four-wave mixing), along with the bandpass filtering mechanism added to the regenerator, constitute the core evolution mechanism of pulse regeneration. By combining a Mamyshev oscillator with highly nonlinear passive fiber, it is possible to output high-energy supercontinuum ultrashort laser pulses using only a single oscillator. However, due to the use of multiple optical isolators, each with a certain insertion loss, the accumulated loss within the cavity is significant. Furthermore, the optical isolators are placed between the passive fiber and the filter. Since the spectrum passing through the passive fiber is significantly broadened, and the optical isolator's own effective spectral width is limited, placing the optical isolator here leads to a significant decrease in isolation effectiveness and further increases the loss. When the loss increases to a certain extent, the Mamyshev oscillator may fail to oscillate.

[0043] Based on the above-mentioned technical problems, this invention proposes a supercontinuum light source output device. It utilizes an optical pump source, optical fiber and optical fiber devices, and constructs a device for outputting supercontinuum and dual-band light sources based on a Mamyshev oscillator. An optical fiber isolator is placed between the gain fiber and the passive fiber, so that the optical isolator can better perform its isolation function before the light spectrum is broadened, reducing the loss in the optical path and lowering the start-up energy threshold of the Mamyshev oscillator.

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] Figure 1 This is a schematic diagram of the structure of a supercontinuum light source output device provided by the present invention, as shown below. Figure 1 As shown, the present invention provides a supercontinuum light source output device, comprising: an optical pump source, including a first optical pump source 1 and a second optical pump source 9; the first optical pump source 1 is used to output a first pump laser; the second optical pump source 9 is used to output a second pump laser; an optical fiber filter, including a first optical fiber filter 8 and a second optical fiber filter 15; the first optical fiber filter 8 is used to output a first narrow-spectrum laser, and the second optical fiber filter 15 is used to output a second narrow-spectrum laser; and an optical fiber combiner, including a first optical fiber combiner 2 and a second optical fiber combiner 10; the first optical fiber combiner 2 is used to receive and couple the first pump laser and the first narrow-spectrum laser, forming a first coupled laser; the second optical fiber combiner 10 is used to receive and couple the second pump laser and the second narrow-spectrum laser, forming a first coupled laser. The system comprises: a second coupled laser; a gain fiber, including a first gain fiber 3 and a second gain fiber 11; the first gain fiber 3 is used to receive the first coupled laser, increase the pulse energy of the first coupled laser, and form a first high-intensity pulse laser; the second gain fiber 11 is used to receive the second coupled laser, increase the pulse energy of the second coupled laser, and form a second high-intensity pulse laser; a fiber optic isolator 4, which is used to receive the first high-intensity pulse laser, determine the propagation direction of the laser, and output a unidirectional laser; and an output module, including a first output module and a second output module; the first output module is used to receive the unidirectional laser and output a first-band laser according to a preset ratio; the second output module is used to receive the second high-intensity pulse laser and output a second-band laser according to a preset ratio.

[0046] The input end of the first fiber optic filter is connected to the first output module; the input end of the second fiber optic filter is connected to the second output module.

[0047] Specifically, this supercontinuum light source output device is based on a Mamyshev oscillator. Each of the two arms of the Mamyshev oscillator is a Mamyshev pulse regenerator. Each Mamyshev pulse regenerator has at least one optical pump source, one fiber optic filter, one fiber optic combiner, one gain fiber, and one output module. A fiber optic isolator is located on one of the Mamyshev pulse regenerators, for example, on the first or second regenerator arm. Furthermore, because the center wavelengths of the two arms of the Mamyshev oscillator are different, the parameter settings of the fiber optic isolator differ when it is placed on the first regenerator arm versus the second regenerator arm.

[0048] An all-fiber supercontinuum and dual-band light source output device based on a Mamyshev oscillator was constructed by using an optical pump source, optical fiber, and optical fiber devices. This eliminated the need for an amplification stage, saved space and cost, and improved the stability of the light source output. A fiber optic isolator was placed between the gain fiber and the passive fiber, allowing the isolator to better perform its isolation function before the light spectrum broadens, reducing losses in the optical path and lowering the start-up energy threshold of the Mamyshev oscillator.

[0049] Optionally, an optical pump source with external modulation capability can be used. For example, the continuous laser output (i.e., pump light) from an optical pump source with external modulation capability is guided into the laser cavity by an optical fiber combiner or wavelength division multiplexer. The pump light excites the gain fiber, thereby significantly amplifying the energy of the pulse.

[0050] Specifically, the gain fiber contains a gain medium. Pump light excites the gain fiber, causing population inversion in the gain medium and generating spontaneous emission. Optionally, the gain medium is a rare-earth element ion, such as ytterbium-doped (Yb). 3+ ), Erbium 3+ ), Thulium (Tm) 3 + ), neodymium (Nd) 3+ Rare earth ions such as )

[0051] When spontaneously emitted light propagates in a Mamyshev cavity, driven by an externally modulated optical pump source, such as intensity modulation by a periodic square wave, the light in the optical path exhibits relatively primitive intensity variations over time. The stronger portion of this variation generates nonlinear effects in the fiber optic path, especially self-phase modulation, typically resulting in spectral broadening of this portion of the light.

[0052] In some embodiments, the center wavelengths of the first fiber optic filter and the second fiber optic filter are spaced apart in the band, and the passbands of the first fiber optic filter and the second fiber optic filter are spaced apart in the band.

[0053] In some embodiments, the fiber optic filter is also used to block laser light that has not undergone spectral broadening.

[0054] Due to the separation of the center wavelength and passband of the two fiber optic filters, the weaker portions that have not undergone self-phase modulation are cut off by the filters. Meanwhile, light capable of forming pulses, due to its over-broadened spectrum, allows some components to pass through the bandpass filter and enter the next stage of the Mamyshev arm, where they are re-amplified. This creates a cyclic mechanism of "amplification – spectral broadening – filtering" within the cavity. This is the intensity-based selective transmission mechanism of the Mamyshev oscillator, effectively constituting a quasi-saturable absorber. Under this quasi-saturable absorption mechanism, through the cyclic regeneration process within the cavity, the laser will form a pulse sequence with high peak power in the time domain.

[0055] In some embodiments, the optical pump source is an externally modulated optical pump source or a directly modulated optical pump source.

[0056] In some embodiments, the first high-intensity pulsed laser is generated in the first regeneration arm of a Mamyshev oscillator; the second high-intensity pulsed laser is generated in the second regeneration arm of a Mamyshev oscillator. The regeneration arm of a Mamyshev oscillator refers to a dual-arm structure in the Mamyshev oscillator that enables pulse regeneration.

[0057] In some embodiments, the first output module includes: a first fiber beam splitter 5, used to output a portion of the unidirectional laser according to a preset ratio; a first highly nonlinear passive fiber 6, used to receive the unidirectional laser, broaden the spectrum of the unidirectional laser and form a first broadband laser; and a second fiber beam splitter 7, used to receive the first broadband laser and output a portion of the first broadband laser according to a preset ratio.

[0058] In some embodiments, the second output module includes: a third fiber beam splitter 12, used to output a portion of the second high-intensity pulsed laser according to a preset ratio; a second highly nonlinear passive fiber 13, used to receive the second high-intensity pulsed laser, broaden the spectrum of the second high-intensity pulsed laser, and form a second broadband laser; and a fourth fiber beam splitter 14, used to receive the second broadband laser and output a portion of the second broadband laser according to a preset ratio.

[0059] In some embodiments, the highly nonlinear passive optical fiber includes one or more of the following optical fibers: tapered optical fiber; photonic crystal optical fiber; other optical fibers with a high nonlinear coefficient.

[0060] Specifically, due to their smaller core diameter or special waveguide structures, the aforementioned optical fibers have significantly higher nonlinear coefficients than ordinary passive optical fibers. This allows for easier propagation of ultrashort pulse lasers within them, resulting in effects such as self-phase modulation, which in turn broadens the spectrum and generates a supercontinuum.

[0061] In some embodiments, the fiber optic filter, the fiber optic combiner, the gain fiber, the fiber optic isolator, and the output module are polarization-preserving or non-polarization-preserving types.

[0062] Specifically, fiber optic filters, fiber optic combiners, fiber optic isolators, and fiber optic splitters can be polarization-maintaining fiber devices, and highly nonlinear passive fibers and gain fibers can be polarization-maintaining fibers. Using polarization-maintaining fibers and polarization-maintaining fiber devices can greatly improve the stability of the light source output under temperature changes and mechanical vibrations, and the device is simple and easy to maintain.

[0063] The present invention provides a supercontinuum light source output device, which utilizes an optical pump source, optical fiber and optical fiber devices, and constructs a device for outputting supercontinuum and dual-band light source based on a Mamyshev oscillator. The optical fiber isolator is placed between the gain fiber and the passive fiber, so that the optical isolator can better perform its isolation function before the spectrum is broadened, reducing the loss in the optical path and lowering the start-up energy threshold of the Mamyshev oscillator.

[0064] The supercontinuum light source output devices provided in the above embodiments are further illustrated below through specific examples:

[0065] Figure 1 This is a schematic diagram of the structure of a supercontinuum light source output device provided by the present invention, as shown below. Figure 1 As shown, the present invention provides a supercontinuum light source output device, comprising: a first optical pump source 1 and a second optical pump source 9, a first fiber combiner 2 and a second fiber combiner 10, a first gain fiber 3 and a second gain fiber 11, a fiber isolator 4, a first fiber splitter 5, a second fiber splitter 7, a third fiber splitter 12 and a fourth fiber splitter 14, a first highly nonlinear passive fiber 6 and a second highly nonlinear passive fiber 13, a first fiber filter 8 and a second fiber filter 15.

[0066] Alternatively, the fiber optic combiner can be replaced by a wavelength division multiplexer. The optical fiber used can be polarization-maintaining fiber, and the fiber optic devices can also be polarization-maintaining fiber devices. Choosing polarization-maintaining fiber and polarization-maintaining fiber devices to construct the device can greatly improve the stability of the device under temperature changes and mechanical vibrations, and also make the device maintenance simpler and easier.

[0067] First, the first optical pump source 1 and the second optical pump source 9 couple pump light into the laser ring cavity through the first fiber combiner 2 and the second fiber combiner 10, respectively. The pump light can excite the first gain fiber 3 and the second gain fiber 11, thereby obtaining spontaneous emission light.

[0068] Then, assume that there is a weak pulse within the laser cavity, caused, for example, by modulation of the output power of the optical pump source or other mechanisms. For the sake of generality, assume that this weak pulse originates from the first fiber combiner (or wavelength division multiplexer) 2 and propagates counterclockwise in the direction specified by the fiber isolator 4.

[0069] At the first gain fiber 3, the energy of the pulse is greatly amplified, becoming a relatively strong pulse. A portion of the pulse is emitted at the first fiber beam splitter 5 according to a predetermined ratio, while the remainder enters the first highly nonlinear passive fiber 6. Due to the high nonlinearity of the first highly nonlinear passive fiber 6, the pulse generates self-phase modulation and forms the first type of supercontinuum. It can be output at the second fiber beam splitter 7 according to a certain ratio, and the remaining portion reaches the fiber filter 8. Due to the filtering effect of the fiber filter 8, some spectral components can pass through, while the remaining spectral components are cut off.

[0070] Finally, the portion that has passed through the second fiber combiner (or wavelength division multiplexer) 10 reaches the second regeneration arm of the Mamyshev oscillator, and then undergoes an evolution process similar to that of the first regeneration arm.

[0071] The stronger portion of the light spectrum exhibits a strong nonlinear effect, which, after self-phase modulation, broadens the spectrum, ensuring that a portion can pass through the fiber optic filter, thus enabling intracavity regeneration. The weaker portion, however, fails to produce a sufficient nonlinear effect; its self-phase modulation is insufficient to cover the passband of the fiber optic filter, resulting in cutoff and preventing regeneration. This is the intensity-based selective light transmission mechanism of the Mamyshev oscillator, effectively constituting a quasi-saturable absorber. Under this quasi-saturable absorber mechanism, a "amplification-spectral broadening-filtering" regeneration process occurs within the cavity, resulting in a high-peak-power pulse sequence in the time domain.

[0072] This invention provides a supercontinuum light source output device that directly outputs supercontinuum pulses using a single fiber optic oscillator, with two selectable center wavelengths for the supercontinuum. This overturns the traditional "oscillator-amplifier-spreading module" structure of supercontinuum pulsed lasers, simplifying the layout and significantly reducing costs. By directly outputting two ultrashort pulses in two bands using a single fiber optic oscillator, combined with the aforementioned two supercontinuum bands, this light source output device can output four different types of optical pulses. Compared to traditional single-band ultrashort pulse lasers, this invention can be applied to a wider range of downstream scenarios. Furthermore, this supercontinuum light source output device uses only one fiber optic isolator, positioned between the gain fiber and the passive fiber. This allows the isolator to better perform its isolation function before the light spectrum broadens, reducing losses in the optical path and lowering the start-up energy threshold of the Mamyshev oscillator.

[0073] It should also be noted that the terms "first," "second," etc., used in the embodiments of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, and the number of objects is not limited. For example, the first object can be one or more.

[0074] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An ultrabroadband optical source output device, characterized by comprising: The application relates to a high-power laser output module. The application comprises: a light pumping source, including a first light pumping source and a second light pumping source; the first light pumping source is used for outputting first pumping laser; the second light pumping source is used for outputting second pumping laser; a fiber filter, including a first fiber filter and a second fiber filter; the first fiber filter is used for outputting first narrow-spectrum laser; the second fiber filter is used for outputting second narrow-spectrum laser; a fiber combiner, including a first fiber combiner and a second fiber combiner; the first fiber combiner is used for receiving and coupling the first pumping laser and the first narrow-spectrum laser, and forming first coupled laser; the second fiber combiner is used for receiving and coupling the second pumping laser and the second narrow-spectrum laser, and forming second coupled laser; a gain fiber, including a first gain fiber and a second gain fiber; the first gain fiber is used for receiving the first coupled laser, increasing the pulse energy of the first coupled laser and forming first strong pulse laser; the second gain fiber is used for receiving the second coupled laser, increasing the pulse energy of the second coupled laser and forming second strong pulse laser; a fiber isolator, which is used for receiving the first strong pulse laser, determining the propagation direction of laser and outputting unidirectional laser; an output module, including a first output module and a second output module; the first output module is used for receiving the unidirectional laser, and outputting laser of a first wave band according to a preset ratio; the second output module is used for receiving the second strong pulse laser, and outputting laser of a second wave band according to a preset ratio; wherein the input end of the first fiber filter is connected to the first output module; the input end of the second fiber filter is connected to the second output module; the first output module comprises: a first fiber splitter, which is used for outputting a part of the unidirectional laser according to a preset ratio; a first high-nonlinear passive fiber, which is used for receiving the unidirectional laser, widening the spectrum of the unidirectional laser and forming first wide-spectrum laser; a second fiber splitter, which is used for receiving the first wide-spectrum laser and outputting a part of the first wide-spectrum laser according to a preset ratio; the second output module comprises: a third fiber splitter, which is used for outputting a part of the second strong pulse laser according to a preset ratio; a second high-nonlinear passive fiber, which is used for receiving the second strong pulse laser, widening the spectrum of the second strong pulse laser and forming second wide-spectrum laser; 2. The supercontinuum light source output device according to claim 1, characterized in that, a fourth fiber splitter, which is used for receiving the second wide-spectrum laser and outputting a part of the second wide-spectrum laser according to a preset ratio.

3. The supercontinuum light source output device according to claim 1, wherein The center wavelength of the first fiber filter and the center wavelength of the second fiber filter have intervals in the wave band; the filter passband of the first fiber filter and the filter passband of the second fiber filter have intervals in the wave band.

4. The supercontinuum light source output device according to claim 1, wherein The fiber filter is also used for cutting off laser which has not been spectrum widened. The light pumping source is an external modulation type light pumping source or a direct modulation type light pumping source.

5. The supercontinuum light source output device according to claim 1, wherein, The first intense pulsed laser is generated in a first regenerative arm of a Mamyshev oscillator; the second intense pulsed laser is generated in a second regenerative arm of a Mamyshev oscillator.

6. The supercontinuum light source output device according to claim 1, wherein, The first high nonlinear passive optical fiber comprises one or more of the following fibers: Polarization maintaining fiber; Photonic crystal fiber; Other fibers with high nonlinear coefficient.

7. The supercontinuum light source output device according to claim 1, wherein The second high nonlinear passive optical fiber comprises one or more of the following fibers: Polarization maintaining fiber; Photonic crystal fiber; Other fibers with high nonlinear coefficient.

8. The supercontinuum light source output device according to claim 1, wherein, The fiber filter, the fiber combiner, the gain fiber, the fiber isolator and the output module are polarization maintaining or non-polarization maintaining.

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