38 results about "Nonlinear optical fiber" patented technology

The invention discloses a near-infrared wide-spectrum pulse light source generator, belongs to the technical field of laser light source manufacturing, and aims to solve the problems of complex system structure and high cost due to the fact that a supercontinuum laser generates supercontinuum through multi-stage power amplification in the prior art. The device is composed of a first semiconductor pump laser, a first wavelength division multiplexer, a first gain optical fiber, a first filter, a first dispersion compensation optical fiber, a first high-nonlinearity optical fiber, a first isolator, an optical fiber coupler, a second semiconductor pump laser, a second wavelength division multiplexer, a second gain optical fiber, a second filter, a second dispersion compensation optical fiber, a second high-nonlinearity optical fiber and a second isolator. According to the invention, the characteristic of high mode-locked pulse energy of the Mmyshev oscillator is utilized, multi-stage power amplification is not needed, and the super-continuum spectrum can be directly generated, so that the system structure is simplified, and the cost is reduced; the laser light source can be applied to multiple fields of laser sensing, photoelectric countermeasure, remote sensing detection, optical imaging and the like.

A light source includes a mode-locked laser; a beam splitter that branches the femtosecond optical pulse train; a CW solid-state laser; a first beam combiner that outputs one side of the femtosecond optical pulse train on the same axis; a secondary nonlinear optical element that outputs a difference frequency generation and conversion optical pulse train from either a continuous wave or a femtosecond optical pulse train; an amplifier that amplifies the difference frequency generation and conversion optical pulse train; a polarization-maintaining all normal dispersion high nonlinear fiber that converts the other femtosecond optical pulse train into a supercontinuum optical pulse train; a first dispersion medium that converts the supercontinuum optical pulse train into a pulse width that is approximately the same as the difference frequency generation and conversion optical pulse train; and a second beam combiner that multiplexes and outputs the difference frequency generation and conversion optical pulse train and the supercontinuum optical pulse train.

The invention discloses an optical fiber link physical parameter estimation method based on a multichannel feature input neural operator, and belongs to the technical field of optical fiber communication. The method comprises the following steps: acquiring signals of a transmitting end and a receiving end under different channel parameters, and respectively calculating multiple groups of weighting and observation data corresponding to loss, dispersion and nonlinear effect according to a nonlinear evolution equation for describing optical signal transmission; splicing the observation data and processing the observation data into a high-dimensional complex feature sequence; a frequency domain operator block comprising a parallel complex frequency spectrum and a time domain convolution branch is designed to extract and fuse the features, and aggregation representation of the channel features is obtained through Fourier transform and frequency domain attention pooling; and outputting estimated dispersion and nonlinear real number parameters through a plurality of multi-layer perceptron and a linear projection layer. According to the method, physical priori knowledge of optical fiber transmission is integrated into the deep neural operator, so that the parameter estimation capability and the model generalization performance of long-distance, strong-dispersion and strong-nonlinearity optical fiber links are improved.

The application discloses a mode division multiplexing all-optical regenerative device, which comprises a polarization controller, a few-mode amplifier, an optical coupler, a few-mode nonlinear optical fiber, an optical carrier extractor and an optical phase shifter. Mode division multiplexing signals of multi-level pulse amplitude modulation from different users can be simultaneously regenerated by the mode division multiplexing all-optical regenerative device, the regenerated mode division multiplexing signals are amplified and shaped, and the power transfer curve of each mode channel is not affected by the change of other mode levels.

This invention discloses a high-speed sweeping fiber optic light source. The specific device includes: a mode-locked pulse light source, an optical fiber amplifier, a highly nonlinear optical fiber, and a dispersion-compensating optical fiber. The passively mode-locked pulse light source outputs a high repetition rate, wide-spectrum mode-locked pulse. Its dispersion propagation follows a parabolic differential equation similar to one-dimensional paraxial diffraction, analogous to Fraunhofer diffraction. The pulse is amplified outside the cavity by an optical fiber amplifier to increase the laser pulse energy and peak power. Then, it is broadened by the highly nonlinear optical fiber to obtain a supercontinuum light source. Finally, the pulse is stretched by a highly dispersive medium provided by the dispersive optical fiber, and the pulse frequency domain spectrum is mapped to a time domain waveform, thereby realizing a high-speed sweeping frequency light source in the time domain.

A spectral domain optical coherence tomography (OCT) system utilizes an electrowetting prism having four isolated electrodes and configured to deflect a light beam according to an actuating control signal applied to the electrodes. The control signal causes the light beam to laterally scan over a sample. The light beam is produced by a broad bandwidth laser and light from the sample and a reference path is provided to a spectrometer for analysis. The light source may be an all-normal-dispersion fiber laser seeding a gain-managed nonlinear fiber amplifier. The electrowetting prism is capable of scanning up to ±6°. The system is low power and operates at kHz speed.

The present application relates to the technical field of optical fibers, in particular to a dual-wavelength femtosecond fiber laser. The laser comprises a pumping light source, which is used for outputting first-wavelength femtosecond pulse laser and a first excitation light source; a double-clad nonlinear optical fiber, which is connected to an output end of the pumping light source and is used for converting part of the first-wavelength femtosecond pulse laser into second-wavelength femtosecond pulse laser by means of using the soliton self-frequency shift effect, and outputting the remaining first-wavelength femtosecond pulse laser, the second-wavelength femtosecond pulse laser and the first excitation light source; and a holmium-doped gain fiber, which is connected to the output end of the double-clad nonlinear optical fiber and is used for amplifying the first-wavelength femtosecond pulse laser and the second-wavelength femtosecond pulse laser under the excitation of the first excitation light source. Therefore, the present application achieves the output of dual-wavelength high-energy femtosecond pulse laser in full-fiber mid-infrared lasers, achieves a compact and portable structure, good environmental adaptability and wavelength and energy advantages in practical applications such as medicine and material processing, and is applicable to vehicle-mounted scenarios, airborne scenarios, etc.

The application belongs to the technical field of ultra-short pulse laser, and particularly relates to a nonlinear fiber loop and full positive dispersion pump protection type 8-shaped cavity and a laser. The nonlinear fiber loop comprises a first circulator provided with three ports, a second circulator provided with three ports and a beam combiner. The first port of the first circulator is used to connect the third port of a coupler, the second port of the first circulator is connected with the third port of the second circulator, and the third port of the first circulator is connected with the output end of the beam combiner. The first port of the second circulator is used to connect the fourth port of the coupler through a first gain fiber, the second port of the second circulator is connected with the signal end of the beam combiner, and the first input end of the beam combiner is connected with a first pump light source.

The utility model relates to the field of ultrafast lasers, and provides a tunable low-repetition-frequency optical fiber optical frequency comb light source. Comprising an all-polarization-maintaining ultrafast fiber laser seed source, a fiber pre-amplification stage module, a fiber main amplification stage module, a grating pair dispersion matching module, a super-continuum spectrum generation module and an f-2f self-reference detection module which are sequentially arranged along a light path. The full polarization-maintaining ultrafast fiber laser seed source is used for outputting continuously tunable signal light with low repetition frequency; the optical fiber pre-amplification stage module and the optical fiber main amplification stage module are used for carrying out self-similarity amplification and power amplification on the input signal light in sequence; the grating pair dispersion matching module is used for performing dispersion matching on the amplified signal light; the super-continuum spectrum generation module is used for coupling the signal light subjected to dispersion matching into a high-nonlinearity optical fiber to generate a super-continuum spectrum light source; and the f-2f self-reference detection module is used for measuring the super-continuum spectrum light source to obtain a light frequency comb with low repetition frequency.

A mid-infrared laser generation system based on dispersion-managed soliton bunch pulses. The system can achieve high-power, high-efficiency and high-proportion mid-infrared laser output, and has the advantages of an all-fiber configuration, a compact structure and a high power proportion in a longer-wavelength region of a mid-infrared spectrum. A pulsed fiber laser device generates a nanosecond pulse laser in a 1.5-micron band. A fiber pulse stretcher is made of a single-mode silica fiber, splits nanosecond pulses into a plurality of ultrafast soliton pulses by means of a nonlinear effect, and performs spectral energy conversion from 1.5 microns to 2.4 microns. A fiber laser amplifier further increases the output power of a stretched pulse laser and extends a spectrum to a 2.7-micron band, and also increases pulse energy beyond a 2.3-micron band. A fiber mode field adapter efficiently couples into a nonlinear fiber pulses generated in the fiber laser amplifier. The nonlinear fiber extends a laser to a mid-infrared 3-5-micron band, thereby achieving high-power, high-efficiency and high-proportion mid-infrared laser output.

The invention discloses a beam-expandable dispersion-adjustable high-nonlinearity polarization-maintaining preform, an optical fiber and a manufacturing method of the polarization-maintaining optical fiber, and a core rod, the core rod comprises a core layer and an inner cladding, the core layer has a first type of doping, and the first type of doping is germanium doping; the inner cladding has a second type of doping, and the second type of doping is germanium-fluorine co-doping; the stress rod is provided with a third type of doping so as to realize a birefringence function; the sleeve is provided with a first sleeve inner hole which is located in the center of the sleeve and matched with the core rod, and two second sleeve inner holes which are symmetrically distributed on the two sides of the first sleeve inner hole and matched with the stress rods. According to the method, the problem of core cracking of the polarization-maintaining preform with the high numerical aperture during processing is solved, the problem of overlarge welding loss between the high-nonlinearity optical fiber and the conventional polarization-maintaining optical fiber is solved by controlling the expansion coefficient of the inner cladding, and meanwhile, the prepared optical fiber has the properties of high nonlinearity effect, capability of expanding beams to reduce the welding loss, adjustable dispersion and the like.

The application discloses a pulse ultrafast measurement system based on a time domain amplification method, comprising a reference pulse generation device, wherein the reference pulse generation device is sequentially connected with a first dispersion compensation optical fiber, a first power amplification device and a pulse shaping device; the pulse shaping device is connected with a light combiner; the light combiner is sequentially connected with a high nonlinear optical fiber, a first filter, a third dispersion compensation optical fiber, a second power amplification device and a first oscilloscope; the application further comprises a signal to be measured, wherein the signal to be measured is connected with a second dispersion compensation optical fiber, and the second dispersion compensation optical fiber is connected with the light combiner; the application further discloses a pulse ultrafast measurement method based on the time domain amplification method.

An assembly comprising a nonlinear element configured to generate broadband radiation from input radiation coupled into the nonlinear element. The assembly further comprises an optical element downstream of the nonlinear element, the optical element being configured to reflect a portion of the broadband radiation back into the nonlinear element. The nonlinear element is typically a nonlinear optical fiber, such as a hollow-core photonic crystal fiber (HC-PCF).

The utility model discloses an ultraviolet optical fiber optical parametric oscillator based on tunable picosecond green light. The ultraviolet optical fiber optical parametric oscillator comprises a high-power wavelength and repetition frequency adjustable 1 [mu] m laser system, a high-power second harmonic generation device and an optical fiber optical parametric oscillator, the high-power wavelength and repetition frequency adjustable 1 [mu] m laser system comprises a mode-locked fiber laser, a pulse stretcher, an adjustable fiber filter, a fiber pre-amplifier, a fiber collimator and a solid amplifier. According to the utility model, the wavelength of ultraviolet laser can be flexibly adjusted; through a narrow-band filtering technology, the generation efficiency of the ultraviolet laser is improved; an optical parametric oscillator based on a nonlinear optical fiber is designed, a more compact resonant cavity structure is realized, the influence of a heat effect on system efficiency and stability is inhibited, and ultraviolet laser with an excellent light spot mode can be output; the dispersion parameter of the nonlinear optical fiber can be regulated and controlled, so that the phase matching condition of four-wave mixing is optimized, and the efficiency and wavelength tuning range of ultraviolet laser are further improved.

This invention provides a U-band high-energy square-wave pulsed Raman light source module. It first achieves initial stable amplification of the seed light through forward pumping with a 100-watt pump source, followed by high-energy main amplification through reverse pumping with a kilowatt-level pump source. Both stages of Raman amplification utilize highly nonlinear optical fibers as the gain medium to significantly enhance the stimulated Raman scattering effect, efficiently converting pump light energy into signal light and improving overall Raman gain and energy conversion efficiency. Simultaneously, it balances the stability of the amplification process with the integrity of the pulse waveform, thereby achieving a smooth, step-by-step amplification of the U-band pulsed seed light. Ultimately, it stably outputs high-energy U-band square-wave pulsed light with a single pulse energy ≥5μJ and a pulse width of 80–120ns, significantly improving the light source's output performance and better meeting the application requirements of long-distance fiber optic communication expansion and atmospheric methane remote sensing.

The invention belongs to the technical field of gas curing, and discloses a gas curing method based on a high-brightness broadband light source, which comprises the steps of carrier gas treatment, solid gas light source construction, solid gas light path construction, solid gas treatment, quality detection and the like. Compared with an existing external irradiation technology, the method adopts a mode that pulses enter a nonlinear optical fiber, a high-brightness broadband light source is generated by utilizing a nonlinear effect, the light source has excellent light beam quality, wide spectrum and high brightness, almost all defects of the optical fiber have corresponding wavelength energy to directly reach a fiber core to improve the performance of the optical fiber, and the optical fiber performance is improved. Gas molecules are more stably left in the material, the carrier gas curing efficiency is improved, defects are reduced, and the service life of the optical fiber is prolonged.

The invention discloses a demultiplexing comb-shaped Brillouin light source generating device for spectrum synthesis, which comprises a laser generator, a high-nonlinearity optical fiber and a demultiplexing grating, and is characterized in that the laser generator is used for modulating and generating first pumping comb-shaped laser and first signal comb-shaped laser, the high-nonlinearity optical fiber is connected with the laser generator, and the demultiplexing grating is connected with the high-nonlinearity optical fiber; the first pumping comb-shaped laser and the first signal comb-shaped laser are used for reversely transmitting the first pumping comb-shaped laser and the first signal comb-shaped laser, so that the first pumping comb-shaped laser and the first signal comb-shaped laser form comb-shaped Brillouin laser with a preset frequency under the action of stimulated Brillouin gain, and the demultiplexing grating is used for separating the comb-shaped Brillouin laser with the preset frequency into a preset frequency spectral line. According to the invention, by adjusting the frequency interval difference between the first pumping comb laser and the first signal comb laser, under the action of the spectrum vernier effect, the asynchronous light field can be used for driving and generating the comb Brillouin laser with the adjustable frequency interval.

The application relates to the field of optical technology and discloses a second-order soliton trap transmission state regulation method based on an optical event horizon simulation, which comprises the following steps: preparing a second-order soliton pulse and an external probe pulse, wherein the second-order soliton pulse is generated through the balance of dispersion and nonlinearity in a nonlinear optical fiber, the external probe pulse is a weak power pulse, the group velocity parameter of the second-order soliton pulse and the external probe pulse is measured, and group velocity matching and group velocity mismatch conditions are set; through accurate setting of the group velocity matching and mismatch conditions and quantitative calculation of the refractive index change caused by the soliton pulse based on the Kerr effect, an equivalent event horizon is defined, definite physical parameter benchmarks and stable potential well environments are provided for transmission state regulation, the stability of a soliton potential well action boundary can be determined and ensured, the transmission state misjudgment problem caused by potential well drift and distortion is overcome, and the accuracy of the regulation process and the predictability of the result are ensured.

A spectrometer system is described. The system comprises a signal input port and a pump input port, respective signal and pump dispersion fibers, a nonlinear optical fiber section, and an output dispersion fiber. The dispersion fibers are configured to apply predetermined spectral dispersion on light input associated with signal and pump inputs. The nonlinear optical fiber section is configured to receive dispersed signal and pump waves and enable nonlinear interaction between the signal and pump waves. The output dispersion fiber is configured to receive light resulting from said nonlinear interaction and apply predetermined dispersion to the received light, thereby providing output light having mapping between time and spectral components of the input signal. Wherein at least one of the signal input port and pump input port comprises temporal speckle generating unit configured to affect optical pulses passing through to induce temporal speckles within said optical pulses.

The invention discloses an ultraviolet optical fiber optical parametric oscillator based on tunable picosecond green light. The ultraviolet optical fiber optical parametric oscillator comprises a high-power wavelength and repetition frequency adjustable 1 [mu] m laser system, a high-power second harmonic generation device and an optical fiber optical parametric oscillator body. The high-power wavelength and repetition frequency adjustable 1 [mu] m laser system comprises a mode-locked fiber laser, a pulse stretcher, an adjustable fiber filter, a fiber pre-amplifier, a fiber collimator and a solid amplifier. According to the invention, the wavelength of the ultraviolet laser can be flexibly adjusted; through a narrow-band filtering technology, the generation efficiency of the ultraviolet laser is improved; an optical parametric oscillator based on a nonlinear optical fiber is designed, a more compact resonant cavity structure is realized, the influence of a heat effect on system efficiency and stability is inhibited, and ultraviolet laser with an excellent light spot mode can be output; the dispersion parameter of the nonlinear optical fiber can be regulated and controlled, so that the phase matching condition of four-wave mixing is optimized, and the efficiency and wavelength tuning range of ultraviolet laser are further improved.

An optical-resolution photoacoustic microscopy (OR-PAM) system for visualizing water content deep in biological tissue uses an all-fiber 1930-nm hybrid optical parametrically-oscillating emitter. The emitter includes a tunable laser source whose output is amplified by a first erbium-doped fiber amplifier (EDFA). The output of the first amplifier is modulated with a Mach-Zehnder amplitude modulator that receives an RF signal with a nanosecond pulse width and a multiple kilohertz repetition rate. A second EDFA further amplifies the signal and passes it to a fiber circulator that in turn delivers it to a 1950 / 1550 mm fiber wavelength-division-multiplexing coupler WDM. The coupler introduces the signal to a cavity that includes a spool of highly nonlinear fiber and a Thulium-doped fiber amplifier TDFA. From the TDFA the signal reaches a 50 / 50 fiber coupler that sends part to a second output TDFA and guides part back to the cavity through a port of the WDM.

A kind of multi-threshold phase encoding-based all-optical quantization system belongs to all-optical analog-digital conversion field.It includes high repetition frequency femtosecond pulse light source,1×M optical splitter,phase-shifted optical quantization module, soliton self-frequency shift module and multi-threshold encoding module;The phase-shifted optical quantization module is M-path electro-optic modulator;The soliton self-frequency shift module includes first M-path high nonlinear fiber,M-path single-mode fiber and second M-path high nonlinear fiber;The multi-threshold encoding module includes M wavelength division multiplexer,M×N optical delay line array,M×N photodetector array and encoding module.The present application uses multi-threshold encoding module of phase encoding,realizes simultaneous judgment of multiple threshold points on power transmission curve of M electro-optic modulators, solves code type repetition problem of all-optical quantization system,realizes more effective quantization states with less channel number,improves quantization precision.Meanwhile,quantization bit number of the present application is improved to log2(2MN).

The invention belongs to the technical field of optical fibers, and discloses an ultra-flat super-continuum spectrum light source and a generation method, the ultra-flat super-continuum spectrum light source comprises a pulse laser seed source, a stretcher, a single-mode amplifier, a double-cladding ytterbium-doped optical fiber amplifier, a high-nonlinearity optical fiber and an end cap which are connected in sequence, and the output end of the pulse laser seed source is connected with the input end of the stretcher; the output end of the stretcher is connected with the single-mode amplifier; the single-mode amplifier comprises a wavelength division multiplexer, a first pumping LD, a single-mode ytterbium-doped fiber and an isolator; the double-cladding ytterbium-doped optical fiber amplifier comprises a second pumping LD, a pumping signal beam combiner and a double-cladding ytterbium-doped optical fiber, and the signal end and the pumping end of the pumping signal beam combiner are connected with the output end of the isolator and the output end of the second pumping LD respectively; the output end of the double-cladding ytterbium-doped optical fiber is connected with the input end of the high-nonlinearity optical fiber; the output end of the high-nonlinearity optical fiber is connected with the end cap; the spectrum can cover the range of 414-1860 nm at 3dB, the use length of the high-nonlinearity optical fiber is shortened, the compactness, stability and reliability of equipment are ensured, and the cost and the installation and maintenance difficulty are reduced.

The invention discloses a space-time wave packet modulation signal generation and anti-turbulence optical communication device, belongs to the technical field of optical systems, and aims to solve the problems in the prior art. The device comprises a 1530nm laser, an electro-optical modulator, a signal generator, an erbium-doped fiber amplifier (EDFA), a first polarization isolator, a 1530nm / 1625nm wavelength division multiplexer, a high-nonlinearity fiber, a first polarization controller, a second polarization isolator, an output coupler, a dispersion compensation fiber, a circulator, a semiconductor saturable absorption mirror (SESAM), a second polarization controller and a chirped pulse fiber amplifier (CPA). The system comprises a first collimator, a first diffraction grating, a first cylindrical lens, a multi-phase plane, a plane mirror, a second cylindrical lens, a second diffraction grating, a spherical lens, a cubic beam splitter, a beam analyzer CMOS, a collimation and beam expanding lens group, a receiving antenna, a power meter, a photoelectric detector and a field programmable gate array FPGA. And stable signal transmission is realized.

This invention discloses a wide-tunable single-passband microwave photonic filter and its construction method. The filter includes a light source device for generating a supercontinuum light source, comprising a generator, an RF power amplifier, a DFB laser, a first erbium-doped fiber amplifier, a first variable optical attenuator, and a highly nonlinear fiber connected in sequence. An optical filter for selecting a certain width of supercontinuum light source is connected between the light source device and a MZI structure for spectral segmentation of the supercontinuum light source. The MZI structure is connected to a photodetector via a single-mode fiber and a second erbium-doped fiber amplifier. The photodetector is connected to the MZI structure via a vector network analyzer. This application features a simple structure, low cost, and the constructed complex coefficient filter eliminates the fundamental frequency response.

The application discloses a kind of ultraviolet-middle infrared waveband flat type supercontinuum all-fiber laser, belong to fiber laser technical field, including dual-wavelength power amplification and beam combination structure, it includes by first wavelength power amplification substructure, second wavelength power amplification substructure, two wavelengths light output by two substructures is coupled by wavelength division multiplexer;It further includes short-wave ultraviolet waveband supercontinuum generation structure, it includes photon crystal fiber and fifth rare earth ion doped optical fiber connected in order;It further includes long-wave middle infrared waveband supercontinuum generation structure, it includes fifth fiber amplifier, mode field adapter, the high nonlinearity optical fiber of doping concentration 64mol.%-100mol.%, seventh rare earth ion doped optical fiber connected in order, three structures are connected in order.The application dual-wavelength pumped nonlinear optical fiber and introduce rare earth doped optical fiber to eliminate the mode of combination of pump residual peak, on the basis that spectrum is greatly expanded, simultaneously realize the flat output of spectrum full waveband.

The application discloses a single-seed-source-based all-fiber flat ultraviolet-mid-infrared supercontinuum laser, which comprises a seed laser, two-stage ytterbium-erbium-doped fiber amplifiers, a high-nonlinear fiber NL-1550, a large-mode-field ytterbium-erbium-doped fiber amplifier, a large-mode-field ytterbium-doped fiber amplifier, a photonic crystal fiber and a passive fluorine-doped fiber which are connected in sequence; wherein the seed laser outputs seed pulse laser of 1.55 mu m, and finally outputs supercontinuum laser with a spectral range of 370-4500 nm, covering ultraviolet-mid-infrared bands. The application adopts an all-fiber structure, has high stability and portability, reduces the loss in the process of light transmission and the system complexity, realizes double-wavelength pumping through a seed source, and realizes super-flat spectral output covering ultraviolet to mid-infrared through a multi-stage amplification structure and a multi-stage nonlinear medium structure.

The invention discloses a short-coherence frequency stabilization light path device applied to an interferometer. A tunable laser unit generates continuous tunable laser; the phase regulation and control unit mixes a low-frequency reference signal and a high-frequency radio-frequency signal and then loads the mixed signal to a tunable laser phase; the signal subjected to phase regulation and control outputs short coherent light through a nonlinear regulation and control unit, and the short coherent light comprises an optical fiber amplifier, a high nonlinear optical fiber and a collimation output device which are sequentially arranged on the same optical axis; the saturable absorption unit screens laser with required power, inputs the screened laser into the saturable absorption gas chamber to generate a characteristic absorption spectral line, and provides a reference signal; and the feedback control unit comprises a photoelectric detector, a resolving module and an electrical control system which are arranged in sequence, converts a reference signal into a time domain electric signal, mixes the time domain electric signal with a reference signal, resolves to obtain a frequency error signal, and outputs a voltage feedback signal to the tunable laser unit through a control algorithm to realize frequency stabilization. According to the invention, laser frequency stabilization and short coherent light generation are realized at the same time.

The application discloses a single-pump four-wave mixing light source, which utilizes a light source spectrum widening technology generated by a third-order nonlinear effect in an optical fiber, and achieves spectrum conversion and light power transfer by injecting high-power pump light into a high-nonlinear optical fiber, so as to realize a wide-spectrum light source and high output power. The spectrum width and the power are related to the pump light source power and the parameters of the nonlinear optical fiber, and the light source power has no upper limit in theory. As a light source, the application can improve the detection precision of a high-precision fiber interferometer.

The application discloses a nonlinear wide spectrum fiber light source, which is a technology for expanding the spectrum of a light source by using the third-order nonlinear effect in an optical fiber. High-power laser with two wavelengths is injected into a high nonlinear optical fiber as pumping light to achieve spectrum conversion and light power transfer, so that a wide spectrum light source and high output power are realized. The width and power of the spectrum of the light source are related to the pumping light power and the parameters of the nonlinear optical fiber. The light source power theoretically has no upper limit. The light source is used for a high-precision fiber interferometer, which is a brand-new technical approach.