CN212485786U - Tunable mid-infrared all-fiber structure gas Raman laser - Google Patents
Tunable mid-infrared all-fiber structure gas Raman laser Download PDFInfo
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- CN212485786U CN212485786U CN202021518613.1U CN202021518613U CN212485786U CN 212485786 U CN212485786 U CN 212485786U CN 202021518613 U CN202021518613 U CN 202021518613U CN 212485786 U CN212485786 U CN 212485786U
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Abstract
The utility model provides a tunable mid-infrared all-fiber structure gas Raman laser, which comprises a pumping source, an input end solid core fiber, a hollow fiber and an output device; the pumping source is a tunable pulse fiber laser or a tunable pulse fiber amplifier; the input end and the output end of the hollow optical fiber are respectively sealed in the input end sealed gas cavity and the output end sealed gas cavity, Raman gain gas is filled in the fiber core of the hollow optical fiber, the optical path of pump laser generated by a pump source is sequentially connected with the input end solid optical fiber, the input end sealed gas cavity, the hollow optical fiber, the output end sealed gas cavity and an output device, the pump laser is coupled into the fiber core of the hollow optical fiber through the input end solid optical fiber, stimulated Raman scattering is generated between the pump laser and the Raman gain gas in the fiber core, Raman laser is generated, and the output device outputs the Raman laser. The utility model discloses can obtain the raman laser output of high beam quality, high power, will have important application in the mid-infrared field.
Description
Technical Field
The utility model belongs to the technical field of the laser instrument, a gaseous raman laser of tunable mid-infrared all-fiber structure is related to.
Background
The 3-5 mu m middle infrared band is positioned in an atmosphere transmission window, so that the band laser can be applied to the aspects of laser radar, laser ranging and atmosphere communication. In addition, the waveband is also in the working waveband of most military detectors, so that the method can be applied to the military fields of laser guidance, photoelectric countermeasure and the like. The mid-infrared band also contains absorption peaks of many gas, solid and liquid molecules, so that the method has important application in the fields of environmental pollution detection, spectroscopy, medicine and the like.
Due to the huge application value of the mid-infrared laser, there are many ways to generate the mid-infrared laser so far, including fiber laser, optical parametric oscillator, quantum cascade laser, gas laser, chemical laser, etc. The fiber laser has the characteristics of good beam quality, high stability, compact structure, convenience in carrying and the like, and is one of main research directions of mid-infrared band lasers. But is limited by the rare earth ion species doping and the optical fiber transmission performance, and the single-wavelength laser output of more than 4 μm is not realized in the existing optical fiber laser. Even 3 μm band laser is limited by the transmission characteristics of quartz glass materials, and a fluoride fiber or sulfide fiber is generally used for a fiber laser that outputs mid-infrared laser light in the vicinity of the 3 μm band, but such a fiber has a problem of poor chemical stability.
SUMMERY OF THE UTILITY MODEL
To the technical problem that prior art exists, the utility model provides a gaseous raman laser of tunable mid-infrared all-fiber structure.
Specifically, the utility model discloses a technical scheme do:
the tunable mid-infrared all-fiber structure gas Raman laser comprises a pumping source, an input end solid core fiber, a hollow core fiber and an output device; the pumping source is a tunable pulse fiber laser or a tunable pulse fiber amplifier; the input end and the output end of the hollow optical fiber are respectively sealed in the input end sealed gas cavity and the output end sealed gas cavity, Raman gain gas is filled in the fiber core of the hollow optical fiber, the optical path of pump laser generated by a pump source is sequentially connected with the input end solid optical fiber, the input end sealed gas cavity, the hollow optical fiber, the output end sealed gas cavity and an output device, the pump laser is coupled into the fiber core of the hollow optical fiber through the input end solid optical fiber, stimulated Raman scattering is generated between the pump laser and the Raman gain gas in the fiber core, Raman laser is generated, and the output device outputs the Raman laser.
As the preferred embodiment of the present invention, the hollow core fiber is an anti-resonance hollow core fiber without nodes or connected structure, and the hollow core fiber has a very low transmission loss for the pumping laser and the raman laser, and has a higher transmission loss for the laser of other bands.
As the preferred scheme of the utility model, the output of the solid core optic fibre of input stretches into the sealed gaseous intracavity of input and the mode coupling connection of hollow optic fibre through the tapering coupling with the input of hollow optic fibre. The output end of the solid core optical fiber at the input end is tapered to be smaller than the fiber core size of the hollow optical fiber in a tapering mode, and then the solid core optical fiber is inserted into the hollow optical fiber, so that the coupling transmission of light between the solid core optical fiber and the hollow optical fiber is realized.
As the utility model discloses a preferred scheme, output device is output solid core optic fibre, and output solid core optic fibre adopts solid core fluoride optic fibre, and the input of output solid core optic fibre stretches into the sealed gaseous intracavity of output and the output of hollow optic fibre and is connected through the mode coupling of tapering coupling, is equipped with pumping light filter equipment on the output solid core optic fibre. Furthermore, the pump light filtering device is composed of a long-period fiber grating and a cladding light filter, the central wavelength of the long-period fiber grating is the pump wavelength, the long-period fiber grating couples the residual pump laser in forward transmission to the cladding in forward transmission, and the cladding light filter is used for filtering the residual pump laser coupled to the cladding.
As the preferred scheme of the utility model, output device is the mid-infrared end cap, the sealed setting of mid-infrared end cap is on the sealed gas chamber of output for export raman laser. Specifically, the intermediate infrared end cap is directly embedded on one side wall of the output end sealed gas cavity opposite to the output end of the hollow optical fiber in a sealing manner, and the hollow optical fiber in the output end sealed gas cavity and the intermediate infrared end cap are in coupling connection in a direct butt joint manner.
As the preferred scheme of the utility model, the sealed gaseous chamber of input or output is equipped with the interface of admitting air, connects evacuation and inflation system through the interface of admitting air. The vacuumizing and inflating system is used for vacuumizing the corresponding gas cavity and inflating Raman gain gas into the corresponding gas cavity. The vacuum pumping and inflating system comprises a vacuum pump, a Raman gain gas cylinder, a gas pressure regulating valve, a barometer and the like, and the corresponding gas cavity is pumped by the vacuum pump. The gas pressure regulation and monitoring of the Raman gain gas in the hollow fiber can be realized through the gas pressure regulating valve and the gas pressure gauge on the Raman gain gas circuit.
As a preferred embodiment of the present invention, the pump source is a tunable pulse fiber laser or tunable pulse fiber amplifier with a wave band of 1.55 μm. The Raman gain gas is methane, and can shift the pump laser of a 1.55 mu m wave band to a 2.8 mu m wave band through a stimulated Raman scattering effect, so that the output device outputs the Raman laser of the 2.8 mu m wave band. CH (CH)4Respectively 2917cm-1By using a 1.55 μm band fiber laser as a pump, 2.8 μm laser output can be achieved. The hollow-core optical fiber can adopt an anti-resonance hollow-core optical fiber of a node-free type or a conjoined type. The hollow fiber has very low transmission loss for pump laser in a 1.55 mu m wave band and Raman laser in a 2.8 mu m wave band, and has higher transmission loss for laser in other wave bands.
As a preferred embodiment of the present invention, the pump source is a tunable pulse fiber laser or tunable pulse fiber amplifier with a wave band of 1.5 μm. The Raman gain gas is hydrogen, and can shift the frequency of the pumping laser with the wave band of 1.5 mu m to the wave band of 4 mu m through the stimulated Raman scattering effect, so that the output device outputs the Raman laser with the wave band of 4 mu m. H2The vibration Raman frequency shift coefficient of the vibration is 4155cm-1By using the optical fiber laser of 1.5 μm band as a pump, laser output of 4 μm or more can be realized. The hollow-core optical fiber can adopt an anti-resonance hollow-core optical fiber of a node-free type or a conjoined type. The hollow-core optical fiber has very low transmission loss for pump laser with a wave band of 1.5 mu m and Raman laser with a wave band of 4 mu m, and has higher transmission loss for laser with other wave bands.
As a preferred embodiment of the present invention, the pump source is a tunable pulse fiber laser or a tunable pulse fiber amplifier with a 2 μm waveband. The Raman gain gas is methane, and can shift the pumping laser with a wave band of 2 mu m to a wave band of 4 mu m through a stimulated Raman scattering effect, so that the output device outputs the Raman laser with the wave band of 4 mu m. Methane (CH)4) Has a Raman frequency shift coefficient of 2917cm-1By using a 1.5 μm band fiber laser as a pump, 4 μm or more can be realizedAnd (5) outputting laser. The hollow-core optical fiber can adopt an anti-resonance hollow-core optical fiber of a node-free type or a conjoined type. The hollow-core optical fiber has very low transmission loss for pump laser with a 2 mu m wave band and Raman laser with a 4 mu m wave band, and has higher transmission loss for laser with other wave bands.
Compared with the prior art, the utility model has the advantages of:
(1) the utility model discloses obtain high beam quality, high power, the middle infrared band laser output of tunable, will have important application in the middle infrared field.
(2) The basic principle of the utility model is that the gas in the hollow optical fiber is stimulated to be Raman scattered, the hollow optical fiber is utilized to effectively restrain the pump light in the fiber core with micron order, and the pump intensity and the effective acting distance are greatly improved; meanwhile, the characteristics of low transmission loss of the hollow-core optical fiber to the pumping wavelength and the Raman laser wavelength and high transmission loss to other wave bands are utilized, so that the competition of Raman laser is effectively inhibited, and the conversion efficiency is improved. Further, by designing the pump laser and the Raman gain gas, compared with a rare earth ion doped fiber laser, the laser output of more than 4 microns can be easily realized.
(3) The utility model discloses an use sealed gas chamber device to realize all-fiber structure, the inside coupling transmission of light between solid core optic fibre and the hollow optic fibre is realized through the mode of drawing the awl coupling to sealed gas intracavity portion, has compact structure, convenient operation's advantage.
(4) The utility model discloses utilize long period fiber grating to combine the method realization of covering light filter ware to the filtering of remaining pumping laser, have simple structure, convenient operation's advantage.
(5) The utility model discloses it is high to combine gas laser output, and the damage threshold value is high and the advantage that fiber laser light beam quality is good, has very big potential advantage in practical application.
Drawings
FIG. 1 is a cross-sectional electron microscope image of a node-free type antiresonant hollow-core fiber.
FIG. 2 is a cross-sectional electron microscope image of a conjoined antiresonant hollow-core fiber.
FIG. 3 is a diagram of the transmission spectrum of a long-period fiber grating.
Fig. 4 is a schematic structural diagram of a first tunable mid-infrared all-fiber structure gas raman laser.
Fig. 5 is a schematic view of the internal structure of the sealed gas chamber.
Fig. 6 is a schematic structural diagram of a second tunable mid-infrared all-fiber structure gas raman laser.
FIG. 7 is a schematic diagram of the internal structure of a sealed gas chamber with an end cap.
Illustration of the drawings:
1. a pump source; 2. the input end seals the gas cavity; 3. a hollow-core optical fiber; 4. the output end is sealed with a gas cavity; 5. a long-period fiber grating; 6. a cladding light filter; 7. mid-infrared end caps.
Detailed Description
The invention is further described with reference to the drawings and the specific embodiments.
FIG. 1 is a cross-sectional electron microscope image of a node-free type antiresonant hollow-core fiber. FIG. 2 is a cross-sectional electron microscope image of a conjoined antiresonant hollow-core fiber. FIG. 3 shows a schematic diagram of the transmission spectrum of a long period fiber grating. The transmission spectrum shows that the pump laser has extremely low transmittance, so that the pump laser cannot pass through the long-period fiber grating; the Raman laser transmittance is nearly 100%, so that the long-period fiber grating has no influence on the Raman laser transmission. And according to the principle of the long-period fiber grating, the pump laser which cannot penetrate is coupled into the cladding for transmission, and the cladding light filter can be used for filtering the pump laser. Therefore, the long-period fiber grating combined with the cladding light filter can achieve the filtering effect.
Example 1:
fig. 4 is a schematic structural diagram of a first tunable mid-infrared all-fiber structure gas raman laser. The embodiment adopts the structure and provides the 2.8-micron-waveband tunable intermediate infrared all-fiber structure gas Raman laser which comprises a pumping source 1, an input end sealed gas cavity 2, a hollow fiber 3, an output end sealed gas cavity 4, a long-period fiber grating 5 and a cladding optical filter 6.
The pump source is a tunable pulse fiber laser or a tunable pulse fiber amplifier with a wave band of 1.55 mu m. The center wavelength of the long-period fiber grating 5 is the pump wavelength. The Raman gain gas filled in the fiber core of the hollow-core optical fiber is methane, and can shift the pump laser with the wave band of 1.55 mu m to the wave band of 2.8 mu m through the stimulated Raman scattering effect. The hollow fiber has very low transmission loss for pump laser in a 1.55 mu m wave band and Raman laser in a 2.8 mu m wave band, and has higher transmission loss for laser in other wave bands.
The 1.55 μm wave band tunable pulse pump laser generated by the pump source 1 is coupled into the fiber core of the hollow-core optical fiber 3 through the input end sealed gas cavity 2. The sealed gas cavity can simultaneously realize the filling of working gas and the control of gas pressure in the hollow optical fiber. The hollow fiber has the function of restricting the transmission and gas filling of the pump laser and provides an ideal long-range environment for the interaction of the working gas and the pump laser. The working gas filled in the hollow-core optical fiber is methane (CH)4). The pump laser is filled in the core of the hollow-core optical fiber 3 and CH filled therein4The gas generates stimulated Raman scattering effect to generate Raman laser with 2.8 μm wave band. The residual pump laser and the generated Raman laser are coupled into the solid core fiber through the output end sealed gas cavity 4, wherein the residual pump laser is coupled to the cladding for forward transmission through the long-period fiber grating 5 and then filtered by the cladding light filter 6; the 2.8 μm band Raman laser is directly output through the long-period fiber grating 5 and the cladding light filter 6.
The input-side sealed gas chamber 2 and the output-side sealed gas chamber 4 adopt the structure shown in fig. 5. Fig. 5 is a schematic view of the internal structure of the sealed gas chamber. The solid optical fiber and the hollow optical fiber in the sealed gas cavity are connected in a tapering coupling mode. Specifically, the solid-core optical fiber is tapered in a tapering manner to a size smaller than the core size of the hollow-core optical fiber, and then inserted into the hollow-core optical fiber, so as to realize the coupling transmission of light between the solid-core optical fiber and the hollow-core optical fiber. The sealed gas cavity is provided with an air inlet interface, and is connected with a vacuumizing and inflating system through the air inlet interface. The vacuumizing and inflating system is used for vacuumizing the corresponding gas cavity and inflating Raman gain gas into the corresponding gas cavity. The vacuum pumping and inflating system comprises a vacuum pump, a Raman gain gas cylinder, a gas pressure regulating valve, a barometer and the like, and the corresponding gas cavity is pumped by the vacuum pump. The gas pressure regulation and monitoring of the Raman gain gas in the hollow fiber can be realized through the gas pressure regulating valve and the gas pressure gauge on the Raman gain gas circuit.
Example 2:
fig. 6 is a schematic structural diagram of a second tunable mid-infrared all-fiber structure gas raman laser. The embodiment adopts the structure and provides the tunable mid-infrared all-fiber structure gas Raman laser with the waveband of 2.8 microns, which comprises a pumping source 1, an input end sealed gas cavity 2, a hollow fiber 3, an output end sealed gas cavity 4 and a mid-infrared end cap 7. The pump source is a tunable pulse fiber laser or a tunable pulse fiber amplifier with a wave band of 1.55 mu m. The Raman gain gas filled in the fiber core of the hollow-core optical fiber is methane, and can shift the pump laser with the wave band of 1.55 mu m to the wave band of 2.8 mu m through the stimulated Raman scattering effect. The hollow fiber has very low transmission loss for pump laser in a 1.55 mu m wave band and Raman laser in a 2.8 mu m wave band, and has higher transmission loss for laser in other wave bands. The input end sealed gas cavity 2 adopts the structure of the sealed gas cavity shown in figure 5.
The 1.55 μm wave band tunable pulse pump laser generated by the pump source 1 is coupled into the fiber core of the hollow-core optical fiber 3 through the input end sealed gas cavity 2. The sealed gas cavity can simultaneously realize the filling of working gas and the control of gas pressure in the hollow optical fiber. The working gas filled in the hollow-core optical fiber is methane (CH)4). The pump laser is filled in the core of the hollow-core optical fiber 3 and CH filled therein4The gas generates stimulated Raman scattering effect to generate Raman laser with 2.8 μm wave band. The residual pump laser and the generated Raman laser are directly output through a middle infrared end cap 7 which is arranged on the output end sealed gas cavity 4.
Referring to fig. 7, the internal structure of the sealed gas chamber with the end cap is schematically shown. The intermediate infrared end cap 7 is directly embedded on one side wall of the output end sealed gas cavity 4 opposite to the output end of the hollow optical fiber 3 in a sealing manner, and the hollow optical fiber 3 in the output end sealed gas cavity 4 and the intermediate infrared end cap 7 are in coupling connection in a direct butt joint manner.
Example 3:
fig. 4 is a schematic structural diagram of a first tunable mid-infrared all-fiber structure gas raman laser. The embodiment adopts the structure and provides a 4-micron-waveband tunable mid-infrared all-fiber structure gas Raman laser which comprises a pumping source 1, an input end sealed gas cavity 2, a hollow fiber 3, an output end sealed gas cavity 4, a long-period fiber grating 5 and a cladding light filter 6. The input-side sealed gas chamber 2 and the output-side sealed gas chamber 4 adopt the structure shown in fig. 5.
The pump source is a tunable pulse fiber laser or a tunable pulse fiber amplifier with a wave band of 1.5 mu m. The center wavelength of the long-period fiber grating 5 is the pump wavelength. The Raman gain gas filled in the core of the hollow-core optical fiber is H2The pump laser in the 1.5 μm band can be frequency shifted to the 4 μm band by the stimulated raman scattering effect. The hollow-core optical fiber has very low transmission loss for pump laser with a wave band of 1.5 mu m and Raman laser with a wave band of 4 mu m, and has higher transmission loss for laser with other wave bands.
Example 4:
fig. 6 is a schematic structural diagram of a second tunable mid-infrared all-fiber structure gas raman laser. The embodiment adopts the structure and provides the tunable mid-infrared all-fiber structure gas Raman laser with the waveband of 4 microns, which comprises a pumping source 1, an input end sealed gas cavity 2, a hollow fiber 3, an output end sealed gas cavity 4 and a mid-infrared end cap 7. The pump source is a tunable pulse fiber laser or a tunable pulse fiber amplifier with a wave band of 1.5 mu m. The Raman gain gas filled in the core of the hollow-core optical fiber is H2The pump laser in the 1.5 μm band can be frequency shifted to the 4 μm band by the stimulated raman scattering effect. The hollow-core optical fiber has very low transmission loss for pump laser with a wave band of 1.5 mu m and Raman laser with a wave band of 4 mu m, and has higher transmission loss for laser with other wave bands. The input end sealed gas cavity 2 adopts the sealed gas cavity shown in fig. 5. The output end sealed gas chamber 4 is a sealed gas chamber containing a mid-infrared end cap as shown in fig. 7.
Example 5:
fig. 4 is a schematic structural diagram of a first tunable mid-infrared all-fiber structure gas raman laser. The embodiment adopts the structure and provides a 4-micron-waveband tunable mid-infrared all-fiber structure gas Raman laser which comprises a pumping source 1, an input end sealed gas cavity 2, a hollow fiber 3, an output end sealed gas cavity 4, a long-period fiber grating 5 and a cladding light filter 6. The input-side sealed gas chamber 2 and the output-side sealed gas chamber 4 adopt the structure shown in fig. 5.
The pump source is a tunable pulse fiber laser or a tunable pulse fiber amplifier with a wave band of 2 mu m. The center wavelength of the long-period fiber grating 5 is the pump wavelength. The Raman gain gas filled in the core of the hollow-core optical fiber is CH4The pump laser in the 2 μm band can be frequency shifted to the 4 μm band by the stimulated raman scattering effect. The hollow-core optical fiber has very low transmission loss for pump laser with a 2 mu m wave band and Raman laser with a 4 mu m wave band, and has higher transmission loss for laser with other wave bands.
Example 6:
fig. 6 is a schematic structural diagram of a second tunable mid-infrared all-fiber structure gas raman laser. The embodiment adopts the structure and provides a 4-micron-band tunable mid-infrared all-fiber structure gas Raman laser which comprises a pumping source 1, an input end sealed gas cavity 2, a hollow fiber 3, an output end sealed gas cavity 4 and a mid-infrared end cap 5. The pump source is a tunable pulse fiber laser or a tunable pulse fiber amplifier with a wave band of 2 mu m. The Raman gain gas filled in the core of the hollow-core optical fiber is CH4The pump laser in the 2 μm band can be frequency shifted to the 4 μm band by the stimulated raman scattering effect. The hollow-core optical fiber has very low transmission loss for pump laser with a 2 mu m wave band and Raman laser with a 4 mu m wave band, and has higher transmission loss for laser with other wave bands. The input end sealed gas cavity 2 adopts the sealed gas cavity shown in fig. 5. The output end sealed gas chamber 4 is a sealed gas chamber containing a mid-infrared end cap as shown in fig. 7.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.
Claims (10)
1. Tunable mid-infrared all-fiber structure gas Raman laser, its characterized in that: comprises a pump source, an input end solid core optical fiber, a hollow core optical fiber and an output device; the pumping source is a tunable pulse fiber laser or a tunable pulse fiber amplifier; the input end and the output end of the hollow optical fiber are respectively sealed in the input end sealed gas cavity and the output end sealed gas cavity, Raman gain gas is filled in the fiber core of the hollow optical fiber, the optical path of pump laser generated by a pump source is sequentially connected with the input end solid optical fiber, the input end sealed gas cavity, the hollow optical fiber, the output end sealed gas cavity and an output device, the pump laser is coupled into the fiber core of the hollow optical fiber through the input end solid optical fiber, stimulated Raman scattering is generated between the pump laser and the Raman gain gas in the fiber core, Raman laser is generated, and the output device outputs the Raman laser.
2. The tunable mid-infrared all-fiber structured gas raman laser according to claim 1, wherein: the hollow-core optical fiber adopts a node-free or connected anti-resonance hollow-core optical fiber, and has very low transmission loss for pumping laser and Raman laser and higher transmission loss for laser in other wave bands.
3. The tunable mid-infrared all-fiber structured gas raman laser according to claim 1, wherein: the output end of the input end solid optical fiber extends into the input end sealed gas cavity to be coupled and connected with the input end of the hollow optical fiber in a tapering coupling mode.
4. The tunable mid-infrared all-fiber structured gas raman laser according to claim 1, wherein: the output device is an output end solid core optical fiber, the output end solid core optical fiber adopts a solid core fluoride optical fiber, the input end of the output end solid core optical fiber extends into the output end sealed gas cavity to be coupled and connected with the output end of the hollow optical fiber in a tapering coupling mode, and the output end solid core optical fiber is provided with a pump light filtering device.
5. The tunable mid-infrared all-fiber structured gas raman laser according to claim 4, wherein: the pumping light filtering device consists of a long-period fiber grating with the central wavelength being the pumping wavelength and a cladding light filter.
6. The tunable mid-infrared all-fiber structured gas raman laser according to claim 1, wherein: the output device is a middle infrared end cap which is arranged on the output end sealed gas cavity in a sealing mode and used for outputting the Raman laser.
7. The tunable mid-infrared all-fiber structured gas raman laser according to claim 1, wherein: the input end sealed gas cavity or/and the output end sealed gas cavity are/is provided with an air inlet interface, and the air inlet interface is connected with a vacuumizing and inflating system.
8. The tunable mid-infrared all-fiber structured gas raman laser according to any one of claims 1 to 7, wherein: the pumping source is a tunable pulse fiber laser or a tunable pulse fiber amplifier with a wave band of 1.55 mu m; the raman gain gas is methane.
9. The tunable mid-infrared all-fiber structured gas raman laser according to any one of claims 1 to 7, wherein: the pumping source is a tunable pulse fiber laser or a tunable pulse fiber amplifier with a wave band of 1.5 mu m; the raman gain gas is hydrogen.
10. The tunable mid-infrared all-fiber structured gas raman laser according to any one of claims 1 to 7, wherein: the pumping source is a tunable pulse fiber laser or a tunable pulse fiber amplifier with a wave band of 2 mu m; the raman gain gas is methane.
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| CN114754800A (en) * | 2022-06-15 | 2022-07-15 | 中国船舶重工集团公司第七0七研究所 | Method and system for assembling hollow microstructure fiber optic gyroscope light path |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114754800A (en) * | 2022-06-15 | 2022-07-15 | 中国船舶重工集团公司第七0七研究所 | Method and system for assembling hollow microstructure fiber optic gyroscope light path |
| CN114754800B (en) * | 2022-06-15 | 2022-09-06 | 中国船舶重工集团公司第七0七研究所 | Hollow microstructure fiber optic gyroscope light path assembly method and system |
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