CN217981920U - High-power optical isolator and light-splitting monitoring integrated optical device - Google Patents
High-power optical isolator and light-splitting monitoring integrated optical device Download PDFInfo
- Publication number
- CN217981920U CN217981920U CN202221424383.1U CN202221424383U CN217981920U CN 217981920 U CN217981920 U CN 217981920U CN 202221424383 U CN202221424383 U CN 202221424383U CN 217981920 U CN217981920 U CN 217981920U
- Authority
- CN
- China
- Prior art keywords
- fiber
- optical
- optical fiber
- glass sleeve
- lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model relates to an integrated optical device of high power optical isolator, beam split control, including outer glass sleeve pipe, the inside of outer glass sleeve pipe is equipped with coaxial distribution's two optical collimator, isolator core and single optical collimator in proper order, two optical collimator have two optical fiber heads, two optical fiber heads contain incident fiber and reflection fiber, incident fiber is single mode fiber, is used for the input of signal light; the reflecting optical fiber is a multimode optical fiber and is used as a monitoring end for receiving and transmitting a reflecting component of input signal light; the isolator CORE is used for realizing forward transmission and reverse isolation of signal light; the single-fiber collimator is provided with a single-fiber head, the single-fiber head comprises an emergent fiber, and the emergent fiber is a single-mode fiber and is used for outputting signal light. The utility model has the advantages of reasonable design, reduced the device number, reduced splice point number and light path loss, improved the reliability and the cost is reduced.
Description
The technical field is as follows:
the utility model belongs to the technical field of laser radar, especially, relate to an integrated optical device of high power optical isolator, beam split control.
The background art comprises the following steps:
in a fiber laser for a laser radar, a coupler is used for monitoring signal light in a split mode, and an isolator is needed in a light path of the laser for isolating light transmitted in a reverse direction so as to protect the laser. At present, the common method is to use an independent coupler and an independent isolator respectively, and the devices are all sealing structures, and the glue used for bonding elements inside can cause the volatilization of organic gas under the condition of long-term use, so that the pollution is caused to the elements inside, and the long-term reliability is influenced. Therefore, the prior device has the problems of more optical fiber fusion points, low reliability and high cost.
The utility model has the following contents:
the utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model aims to solve the technical problem that an integrated optical device of high power optical isolator, beam split control is provided.
In order to realize the purpose, the utility model discloses a technical scheme be: a high-power optical isolator and a light splitting monitoring integrated optical device comprises an outer glass sleeve, wherein a double-fiber collimator, an isolator core and a single-fiber collimator which are coaxially distributed are sequentially arranged inside the outer glass sleeve, the double-fiber collimator is provided with a double-fiber head, the double-fiber head comprises an incident fiber and a reflecting fiber, and the incident fiber is a single-mode fiber and is used for inputting signal light; the reflecting optical fiber is a multimode optical fiber and is used as a monitoring end for receiving and transmitting a reflecting component of input signal light; the isolator core is used for realizing the reverse isolation of the forward transmission of the signal light; the single-fiber collimator is provided with a single-fiber head, the single-fiber head comprises an emergent fiber, and the emergent fiber is a single-mode fiber and is used for outputting signal light.
Further, the dual-fiber collimator further comprises a first lens, a partially reflective membrane, a first glass sleeve and a second glass sleeve, wherein the first glass sleeve is used for fixing the dual-fiber head and the first lens; the second glass sleeve is used for fixing a partial reflection diaphragm, and the partial reflection diaphragm is positioned between the first lens and the isolator core.
Further, the dual optical fiber head further comprises a first capillary for fixing the incident optical fiber and the reflecting optical fiber.
Further, an air gap is reserved between the partial reflection membrane and the second glass sleeve; an air gap is reserved between the first lens and the first glass sleeve; an air gap is reserved between the first lens and the second glass sleeve.
Furthermore, the fiber end faces of the incident fiber and the emergent fiber are respectively connected with a coreless fiber or a heat beam expanding fiber.
Furthermore, the single-fiber collimator further comprises a second lens and a third glass sleeve, wherein the third glass sleeve is used for fixing the single-fiber head and the second lens, and the second lens is positioned between the single-fiber head and the isolator core.
Further, an air gap is reserved between the second lens and the third glass sleeve.
Further, the single optical fiber head further comprises a second capillary tube, and the second capillary tube is used for fixing the emergent optical fiber.
Further, the surface of the partially reflective membrane is at the focal point of the first lens.
Furthermore, the surface of the partial reflection membrane is plated with a reflection film for partially reflecting the signal light.
Compared with the prior art, the utility model discloses following effect has: the utility model has the advantages of reasonable design, the control end adopts multimode fiber, has bigger receiving numerical aperture and fibre core radius, can solve the loss problem that the optical fiber terminal surface that brings because of the length of coreless fiber is different long or the hot beam expanding facula is inconsistent in the actual course of working is unmatched with the facula and arouses, has solved the sensitive problem of reflective coupling efficiency along with the angular variation simultaneously, has reduced the degree of difficulty of actual production coupling debugging, has improved the sensitive problem of reflective coupling efficiency along with the temperature variation; meanwhile, the number of devices is reduced, the number of welding points and the loss of light paths are reduced, the reliability is improved, and the cost is reduced.
Description of the drawings:
FIG. 1 is a schematic diagram of the construction of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a dual optical fiber collimator according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a single fiber collimator according to an embodiment of the present invention.
In the figure:
11-double fiber collimator; 111-dual fiber head; 1111-an incident optical fiber; 1112-a reflective optical fiber; 1113-first capillary; 1114-a coreless fiber; 112-a first glass sleeve; 113-a first lens; 12-a second glass sleeve; 13-partially reflective membrane; 14-an isolator core; 15-single fiber collimator; 151-single fiber head; 1511-an exit fiber; 1512-a second capillary; 152-a second lens; 153-a third glass sleeve; 16-outer glass sleeve.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1 to 3, the present invention relates to an integrated optical device for high power optical isolator and spectroscopy monitoring, which includes an outer glass sleeve 16, wherein a dual optical collimator 11, an isolator core 14 and a single optical collimator 15 coaxially disposed are sequentially disposed inside the outer glass sleeve 16, the dual optical collimator 11 has a dual optical fiber head 111, the dual optical fiber head 111 includes an incident optical fiber 1111 and a reflective optical fiber 1112, the incident optical fiber 1111 is a single mode optical fiber and is used for inputting signal light; the reflective optical fiber 1112 is a multimode optical fiber, and is used as a monitoring end for receiving and transmitting a reflected component of input signal light; the isolator core 14 is used for realizing reverse isolation of forward transmission of signal light; the single fiber collimator 15 has a single fiber head 151, the single fiber head 151 includes an exit fiber 1511, and the exit fiber 1511 is a single mode fiber and is used for outputting signal light. The monitoring end adopts multimode optical fiber, has larger receiving numerical aperture and fiber core radius, can solve the problem of loss caused by mismatching of the optical fiber end surface and light spots due to different lengths of coreless optical fiber or inconsistent heat beam expanding light spots in the actual processing process, simultaneously solves the problem of sensitivity of reflection coupling efficiency along with angle change, reduces the difficulty of coupling debugging in actual production, and improves the problem of sensitivity of reflection coupling efficiency along with temperature change
In this embodiment, the dual-fiber collimator 11 further includes a first lens 113, a partially reflective film 13, a first glass sleeve 112, and a second glass sleeve 12, where the first glass sleeve 112 is used to fix the dual-fiber head 111 and the first lens 113; the second glass sleeve 12 is used for fixing a partially reflective diaphragm 13, the partially reflective diaphragm 13 is located between the first lens 113 and the isolator core 14, and the partially reflective diaphragm 13 is used for reflecting part of the signal light.
In this embodiment, the dual fiber head 111 further includes a first capillary 1113, the first capillary 1113 is used to fix the incident optical fiber 1111 and the reflective optical fiber 1112, and the first capillary is disposed inside the first glass sleeve.
In this embodiment, an air gap is left between the partially reflective film 13 and the second glass sleeve 12; an air gap is reserved between the first lens 113 and the first glass sleeve 112; an air gap is left between the first lens 113 and the second glass sleeve 12.
In this embodiment, the fiber end faces of the incident fiber 1111 and the emergent fiber 1112 are respectively connected to a coreless fiber 1114 or a thermal beam expanding fiber, so as to increase the spot diameter of the signal light.
In this embodiment, the single fiber collimator 15 further includes a second lens 152 and a third glass sleeve 153, the third glass sleeve 153 is used for fixing the single fiber head 151 and the second lens 152, and the second lens is located between the single fiber head and the isolator core.
In this embodiment, an air gap is left between the second lens 152 and the third glass sleeve 153.
In this embodiment, the single optical fiber head 151 further includes a second capillary 1512, and the second capillary 1512 is configured to fix the exit optical fiber 1511.
In this embodiment, the surface of the partially reflective membrane 13 is at the focal point of the first lens 113.
In this embodiment, the surface of the partially reflective film 13 is plated with a reflective film for partially reflecting the signal light, and the reflectivity of the partially reflective film to the signal light is 0.01% to 20%.
In this embodiment, in operation, signal light is input from the incident optical fiber 1111 and reflected by the surface of the partially reflective film 13 after passing through the first lens 113. Wherein, the surface of the partial reflection diaphragm 13 is plated with a 1% reflection film for the signal light, and the surface of the partial reflection diaphragm 13 is placed at the focal point of the first lens 113. The signal light reflected by the partially reflective diaphragm 13 is focused through the first lens 113 and coupled into the reflective optical fiber 1112. Because the receiving reflective optical fiber 1112 has a larger receiving numerical aperture and core radius, the coupling efficiency is higher, and the reflected component of the incident light can be more effectively received and coupled into the core of the reflective optical fiber 1112 for transmission. The light transmitted by the signal light via the partially reflective film 13 passes through the isolator core 14 and the single fiber collimator 15 in this order, and is output from the exit optical fiber 1511.
The utility model has the advantages of: the incident optical fiber of the double optical fiber head is a single mode optical fiber, the end faces of the incident optical fiber and the emergent optical fiber are respectively connected with a coreless optical fiber or a heat beam expanding optical fiber, the effect of increasing the diameter of a signal light spot is achieved, the light energy density of the end face of the optical fiber head can be reduced, and the laser damage resistance threshold value is obviously improved. Meanwhile, the monitoring end adopts the multimode optical fiber, so that the receiving numerical aperture and the fiber core radius are larger, the problem of loss caused by mismatching of the optical fiber end face and the light spot due to different lengths of the coreless optical fiber or inconsistent heat beam expanding light spots in the actual processing process can be solved, the problem that the reflective coupling efficiency is sensitive along with the change of the angle is solved, the difficulty in actual production coupling debugging is reduced, and the problem that the reflective coupling efficiency is sensitive along with the change of the temperature is improved. In addition, the device integrates the functions of a high-power isolator and light splitting monitoring, reduces the number of devices, the number of welding points and optical path loss, improves the reliability and reduces the cost, and has the characteristics of high integration degree, small volume, low cost and high reliability.
In addition, the terms used in any technical aspect of the present disclosure as described above for indicating the positional relationship or the shape include the state or the shape similar, analogous or approaching thereto unless otherwise stated.
The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: modifications can still be made to the embodiments of the invention or equivalents may be substituted for some of the features; without departing from the spirit of the technical solution of the present invention, the present invention should be covered by the technical solution of the present invention.
Claims (10)
1. The utility model provides an integrated optical device of high power optical isolator, beam split control which characterized in that: the optical fiber coupler comprises an outer glass sleeve, wherein a double-optical-fiber collimator, an isolator core and a single-optical-fiber collimator which are coaxially distributed are sequentially arranged in the outer glass sleeve, the double-optical-fiber collimator is provided with a double-optical-fiber head, the double-optical-fiber head comprises an incident optical fiber and a reflecting optical fiber, and the incident optical fiber is a single-mode optical fiber and is used for inputting signal light; the reflecting optical fiber is a multimode optical fiber and is used as a monitoring end for receiving and transmitting a reflecting component of input signal light; the isolator core is used for realizing the reverse isolation of the forward transmission of the signal light; the single optical fiber collimator is provided with a single optical fiber head, the single optical fiber head comprises an emergent optical fiber, and the emergent optical fiber is a single-mode optical fiber and is used for outputting signal light.
2. The integrated optical device for high power optical isolator and optical splitting monitoring as claimed in claim 1, wherein: the dual-fiber collimator also comprises a first lens, a partial reflection membrane, a first glass sleeve and a second glass sleeve, wherein the first glass sleeve is used for fixing the dual-fiber head and the first lens; the second glass sleeve is used for fixing a partial reflection diaphragm, and the partial reflection diaphragm is positioned between the first lens and the isolator core.
3. The integrated optical device of claim 2, wherein the integrated optical device comprises: the dual optical fiber head further comprises a first capillary for fixing the incident optical fiber and the reflective optical fiber.
4. The integrated optical device of claim 2, wherein the integrated optical device comprises: an air gap is reserved between the partial reflection membrane and the second glass sleeve; an air gap is reserved between the first lens and the first glass sleeve; an air gap is reserved between the first lens and the second glass sleeve.
5. The integrated optical device for high power optical isolator and optical splitting monitoring as claimed in claim 1, wherein: the fiber end faces of the incident fiber and the emergent fiber are respectively connected with a coreless fiber or a heat beam expanding fiber.
6. The integrated optical device for high power optical isolator and optical splitting monitoring as claimed in claim 1, wherein: the single-fiber collimator further comprises a second lens and a third glass sleeve, the third glass sleeve is used for fixing the single-fiber head and the second lens, and the second lens is located between the single-fiber head and the isolator core.
7. The integrated optical device of claim 6, wherein the integrated optical device comprises: an air gap is reserved between the second lens and the third glass sleeve.
8. The integrated optical device of claim 6, wherein the integrated optical device comprises: the single optical fiber head further comprises a second capillary tube, and the second capillary tube is used for fixing the emergent optical fiber.
9. A high power opto-isolator, spectroscopic monitoring integrated optical device as claimed in claim 2, wherein: the surface of the partially reflective membrane is at the focal point of the first lens.
10. A high power opto-isolator, spectroscopic monitoring integrated optical device as claimed in claim 2, wherein: the surface of the partial reflection membrane is plated with a reflection film for partially reflecting the signal light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221424383.1U CN217981920U (en) | 2022-06-09 | 2022-06-09 | High-power optical isolator and light-splitting monitoring integrated optical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221424383.1U CN217981920U (en) | 2022-06-09 | 2022-06-09 | High-power optical isolator and light-splitting monitoring integrated optical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217981920U true CN217981920U (en) | 2022-12-06 |
Family
ID=84269611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221424383.1U Active CN217981920U (en) | 2022-06-09 | 2022-06-09 | High-power optical isolator and light-splitting monitoring integrated optical device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217981920U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116053905A (en) * | 2023-03-17 | 2023-05-02 | 上海拜安实业有限公司 | Optical fiber laser |
-
2022
- 2022-06-09 CN CN202221424383.1U patent/CN217981920U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116053905A (en) * | 2023-03-17 | 2023-05-02 | 上海拜安实业有限公司 | Optical fiber laser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100555012C (en) | The method of attachment of capillary fiber and standard fiber | |
| US3832028A (en) | Coupler for optical waveguide light source | |
| CN217981920U (en) | High-power optical isolator and light-splitting monitoring integrated optical device | |
| CN101216577A (en) | Photon crystal optical fibre coupling method and its coupling apparatus | |
| US9625653B2 (en) | Universal fiber optic connector | |
| US20170254959A1 (en) | Optical Mode Conversion Using Transistor Outline (TO) Techniques and a Ball Lens | |
| JP2004517370A (en) | Optical system for injecting light from a light source into a medium | |
| CN111025477A (en) | Single-mode fiber and capillary fiber coupler and preparation method thereof | |
| CN202837591U (en) | Diaphragm type optical fiber laser coupler | |
| CN201413416Y (en) | Optical fiber LD coupling structure used for wave band of visible light | |
| CN201616584U (en) | Structure for monitoring power of fiber-coupled laser at visible light wave band | |
| CN214954213U (en) | Integrated optical device of high-power optical isolator, WDM and beam combiner | |
| CN219657907U (en) | Signal transmission device adopting collimation light path | |
| CN110045463B (en) | Connecting piece and method for optical fiber fusion | |
| He et al. | Analysis of contributing factors in coupling from laser diode into optical fiber | |
| JPS619610A (en) | Module for bidirectional optical communication | |
| WO2021143274A1 (en) | Optical device integrated with optical fiber adapter | |
| CN220085108U (en) | Optical fiber combiner device | |
| CN203337850U (en) | Beam expanding fiber | |
| CN214849532U (en) | Coaxial packaged semiconductor optical amplifier | |
| CN102809783B (en) | Diaphragm type fiber laser coupler | |
| CN219247846U (en) | Multi-beam coaxial transmission device for free space optical communication | |
| CN219417928U (en) | Small-size low-loss polarization-dependent optical isolator | |
| CN213210538U (en) | High performance optical coupler | |
| CN215728944U (en) | Transmission reflection optical device with front support sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |