CN104297846A - Light sampling device based on multimode fiber receiving and single mode fiber transmission - Google Patents
Light sampling device based on multimode fiber receiving and single mode fiber transmission Download PDFInfo
- Publication number
- CN104297846A CN104297846A CN201410566872.4A CN201410566872A CN104297846A CN 104297846 A CN104297846 A CN 104297846A CN 201410566872 A CN201410566872 A CN 201410566872A CN 104297846 A CN104297846 A CN 104297846A
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- fiber
- light
- optical fiber
- multimode optical
- mode fiber
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- 239000000835 fiber Substances 0.000 title claims abstract description 65
- 238000005070 sampling Methods 0.000 title abstract description 19
- 230000005540 biological transmission Effects 0.000 title abstract description 16
- 238000003384 imaging method Methods 0.000 claims abstract description 18
- 239000013307 optical fiber Substances 0.000 claims description 53
- 230000003287 optical effect Effects 0.000 claims description 29
- 230000003667 anti-reflective effect Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000005253 cladding Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2581—Multimode transmission
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4286—Optical modules with optical power monitoring
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
- H04B10/25891—Transmission components
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention provides a light sampling device based on multimode fiber receiving and single mode fiber transmission. It can be guaranteed that light signals are transmitted in a high beam quality fidelity long-range mode while light receiving area is improved. According to the light sampling device, a multimode fiber receiving end face is connected with a multimode fiber self-imaging shaping section, the output end of the multimode fiber self-imaging shaping section is the input end of a conical fiber isentropic shaping section, the input end of a single mode fiber transmission section is the output end of the conical fiber isentropic shaping section, and the output end of the single mode fiber transmission section is connected with a light oscilloscope. A strict single mode fiber is used in the single mode fiber transmission section, and it can be guaranteed that light signals are transmitted in the high beam quality fidelity long-range mode. According to the light sampling device based on multimode fiber receiving and signal mode fiber transmission, input light signals can be continuous light signals or pulse light signals, the adverse conditions that the light receiving area of a single mode fiber sampling device is too small and the transmission fidelity distance of a multimode fiber sampling device is too short can be overcome, the structure is simple, and the using effect is good.
Description
Technical field
The invention belongs to the field utilizing multimode optical fiber and single-mode fiber to realize efficient, the pressure tight sampling of light signal, be specifically related to a kind of based on the optical sampler that multimode optical fiber receives and single-mode fiber transmits.
Background technology
The optical fiber sampling thief generally adopted at present mainly comprises single-mode fiber optical sampler and multimode optical fiber optical sampler, and typical Optical Sampling method comprises near field sampling and far field sampling.The single-mode fiber core diameter that single-mode fiber optical sampler adopts is less, and representative value, below ten microns, can ensure strict single transverse mode, thus realizes the transmission of long-range fidelity.But the little light receiving area of end face that causes of single-mode fiber core diameter is very little, the light signal received when being applied near field sampling is on the weak side, when being applied to far field sampling, be limited to the beam quality of optical system, focal spot size is often greater than optical fiber core diameter, can only receiving unit light signal.The multimode optical fiber core diameter that multimode optical fiber optical sampler adopts is comparatively large, and representative value is tens of extremely hundreds of microns, greatly can increase light receiving area, can improve signal intensity when being applied near field sampling, easily realizes light beam whole-sample when being applied to far field sampling.But support multiple transverse mode in multimode optical fiber, output beam quality is poor, modal dispersion limits the distance of light signal fidelity transmission, changes the time spectral property of wideband, ultra-short pulses, is unfavorable for that the fidelity of light signal is measured.
Summary of the invention
For overcoming the shortcoming that single-mode fiber optical sampler light receiving area is too small He multimode optical fiber optical sampler fidelity transmission range is short and beam quality is poor, the invention provides a kind of based on the optical sampler that multimode optical fiber receives and single-mode fiber transmits.The present invention is by carrying out length optimization design to existing single-mode fiber and multimode optical fiber, drawing cone than optimal design, fused biconical taper PROCESS FOR TREATMENT and the process of welding integrated technique, while guarantee light signal high light beam quality fidelity long-haul transmission, greatly improve light receiving area, the overall Optical Sampling in far field can be realized.
Optical sampler based on multimode optical fiber reception and single-mode fiber transmission of the present invention contains multimode optical fiber reception end face, multimode optical fiber from imaging plastic section, conical fiber constant entropy plastic section, single-mode fiber span line and light oscillograph; It is light signal injection side that multimode optical fiber receives end face, can be placed near field and do local sampling or be placed in far field and do whole-sample, can plate antireflective film for improving transmitance; Multimode optical fiber from imaging plastic section by the light signal received low damage and transmitting backward with high fidelity in shorter length; Conical fiber constant entropy plastic section realizes the constant entropy conversion of light signal mould field from multimode to single mode, and light signal is coupled into single-mode fiber span line with lower loss from multimode optical fiber; Light signal is transferred to light oscillograph with high light beam quality long-range fidelity by single-mode fiber span line; The characteristic of light oscillograph to light signal is measured and is analyzed.
Principle of work based on the optical sampler that multimode optical fiber receives and single-mode fiber transmits of the present invention is: near field or far field beams receive end face through multimode optical fiber and be coupled into multimode optical fiber from imaging plastic section, multimode optical fiber is single cladding structure, cladding light dissipates through high index of refraction surrounding layer or coat, and the flashlight of sampling transmits at the fibre core neutral line of multimode optical fiber.Due to the intermode interference of transverse modes many in multimode optical fiber, optical signal transmission presents from imaging features, when multimode optical fiber is the integral multiple from re-imaging length from imaging plastic section length, output light field input light field with receiving end compared with undistorted, or input end large mould field size pattern is transformed to little mould field size basic mode after isentropic compression, and last output light field is coupled in single-mode fiber with extremely low loss.Last light field through single-mode fiber with high light beam quality with high fidelity long-haul transmission to light oscillograph carry out measurement and the analysis of light signal.
Of the present invention based on multimode optical fiber receive and single-mode fiber transmit optical sampler in multimode optical fiber can be optimized according to practical application request from the length of imaging plastic section and conical fiber constant entropy plastic section.Receive end face at multimode optical fiber and can plate antireflective film to improve received optical power further, or plating Double-color film is to select specific band.
Input optical signal based on the optical sampler that multimode optical fiber receives and single-mode fiber transmits of the present invention can be continuous light signal or pulsed optical signals.
Terminal measuring equipment based on the optical sampler that multimode optical fiber receives and single-mode fiber transmits of the present invention can be light oscillograph, also can be spectroanalysis instrument, laser energy meter and laser powermeter.
Of the present invention receive based on multimode optical fiber and the optical sampler of single-mode fiber transmission while guarantee light signal is with high light beam quality fidelity long-haul transmission, improve light receiving area, can realize the overall Optical Sampling in far field, simply, result of use is good for structure.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the embodiment 1 based on the optical sampler that multimode optical fiber receives and single-mode fiber transmits of the present invention;
In figure, 1. multimode optical fiber receives end face 2. multimode optical fiber from the smooth oscillograph of imaging plastic section 3. conical fiber constant entropy plastic section 4. single-mode fiber span line 5..
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1
In Fig. 1, of the present invention based on multimode optical fiber receive and single-mode fiber transmission optical sampler contain multimode optical fiber reception end face 1, multimode optical fiber from imaging plastic section 2, conical fiber constant entropy plastic section 3, single-mode fiber span line 4 and light oscillograph 5.Its annexation is: multimode optical fiber receives end face 1 and is connected from imaging plastic section 2 with multimode optical fiber, multimode optical fiber is the input end of conical fiber constant entropy plastic section 3 from the output terminal of imaging plastic section 2, the input end of single-mode fiber span line 4 is the output terminal of conical fiber constant entropy plastic section 3, and the output terminal of single-mode fiber span line 4 is connected with light oscillograph 5.
The course of work of the present embodiment is: light signal receives end face 1 through multimode optical fiber and is coupled into multimode optical fiber from imaging plastic section 2, multimode optical fiber through optimizing length transfers to the output terminal of multimode optical fiber from imaging plastic section 2, that is the input end of conical fiber constant entropy plastic section 3, the input end of single-mode fiber span line 4 is the output terminal of conical fiber constant entropy plastic section 3, constant entropy shaping and the coupling of low damage of light field is realized by the length of the conical region of optimal design and core diameter rate of change, single-mode fiber span line 4 is made to obtain complete light signal, finally optical signal transmission is carried out measuring and analysis to light oscillograph 5.
Claims (2)
1. the optical sampler transmitted based on multimode optical fiber reception and single-mode fiber, it is characterized in that: described contains multimode optical fiber reception end face (1) based on the optical sampler that multimode optical fiber receives and single-mode fiber transmits, multimode optical fiber is from imaging plastic section (2), conical fiber constant entropy plastic section (3), single-mode fiber span line (4) and light oscillograph (5); Its annexation is, multimode optical fiber receives end face (1) and is connected from imaging plastic section (2) with multimode optical fiber, multimode optical fiber is the input end of conical fiber constant entropy plastic section (3) from the output terminal of imaging plastic section (2), the input end of single-mode fiber span line (4) is the output terminal of conical fiber constant entropy plastic section (3), and the output terminal of single-mode fiber span line (4) is connected with light oscillograph (5).
2. according to claim 1 based on the optical sampler that multimode optical fiber receives and single-mode fiber transmits, it is characterized in that: described multimode optical fiber receives on end face (1) and is coated with antireflective film or Double-color film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410566872.4A CN104297846A (en) | 2014-10-23 | 2014-10-23 | Light sampling device based on multimode fiber receiving and single mode fiber transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410566872.4A CN104297846A (en) | 2014-10-23 | 2014-10-23 | Light sampling device based on multimode fiber receiving and single mode fiber transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104297846A true CN104297846A (en) | 2015-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410566872.4A Pending CN104297846A (en) | 2014-10-23 | 2014-10-23 | Light sampling device based on multimode fiber receiving and single mode fiber transmission |
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|---|---|
| CN (1) | CN104297846A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965085A (en) * | 2021-02-05 | 2021-06-15 | 山东国耀量子雷达科技有限公司 | Laser radar receiving module, laser radar and atmospheric aerosol detection method |
| CN113820787A (en) * | 2021-08-19 | 2021-12-21 | 江苏亨通光纤科技有限公司 | A single-mode multi-mode mode-adjusting device and preparation method thereof |
| CN114296186A (en) * | 2021-12-30 | 2022-04-08 | 中国人民解放军国防科技大学 | A method to improve the efficiency of free-space laser coupling to single-mode fibers |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003528339A (en) * | 1999-11-09 | 2003-09-24 | コーニング インコーポレイテッド | Mode adaptation of multimode optical fiber systems |
| WO2005091029A2 (en) * | 2004-03-19 | 2005-09-29 | Crystal Fibre A/S | Optical coupler devices, methods of their production and use |
| CN102650717A (en) * | 2012-05-14 | 2012-08-29 | 上海大学 | Multi-mode/single-mode optical fiber connector based on double-clad optical fiber |
| CN204129254U (en) * | 2014-10-23 | 2015-01-28 | 中国工程物理研究院激光聚变研究中心 | Based on the optical sampler that multimode optical fiber receives and single-mode fiber transmits |
-
2014
- 2014-10-23 CN CN201410566872.4A patent/CN104297846A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003528339A (en) * | 1999-11-09 | 2003-09-24 | コーニング インコーポレイテッド | Mode adaptation of multimode optical fiber systems |
| WO2005091029A2 (en) * | 2004-03-19 | 2005-09-29 | Crystal Fibre A/S | Optical coupler devices, methods of their production and use |
| CN102650717A (en) * | 2012-05-14 | 2012-08-29 | 上海大学 | Multi-mode/single-mode optical fiber connector based on double-clad optical fiber |
| CN204129254U (en) * | 2014-10-23 | 2015-01-28 | 中国工程物理研究院激光聚变研究中心 | Based on the optical sampler that multimode optical fiber receives and single-mode fiber transmits |
Non-Patent Citations (2)
| Title |
|---|
| DANNY NOORDEGRAAF ET AL.: "Efficient multi-mode to single-mode coupling in a photonic lantern", 《OPTICS EXPRESS》 * |
| HE CHEN ET AL.: "Study of mode propagation with 632.8-nm laser in tapered fiber", 《CHINESE OPTICS LETTERS》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965085A (en) * | 2021-02-05 | 2021-06-15 | 山东国耀量子雷达科技有限公司 | Laser radar receiving module, laser radar and atmospheric aerosol detection method |
| CN113820787A (en) * | 2021-08-19 | 2021-12-21 | 江苏亨通光纤科技有限公司 | A single-mode multi-mode mode-adjusting device and preparation method thereof |
| CN114296186A (en) * | 2021-12-30 | 2022-04-08 | 中国人民解放军国防科技大学 | A method to improve the efficiency of free-space laser coupling to single-mode fibers |
| CN114296186B (en) * | 2021-12-30 | 2024-07-19 | 中国人民解放军国防科技大学 | Method for improving coupling efficiency of free space laser to single mode fiber |
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