CN105700080A - Fiber coupling system capable of maintaining optical polarization - Google Patents
Fiber coupling system capable of maintaining optical polarization Download PDFInfo
- Publication number
- CN105700080A CN105700080A CN201610245688.9A CN201610245688A CN105700080A CN 105700080 A CN105700080 A CN 105700080A CN 201610245688 A CN201610245688 A CN 201610245688A CN 105700080 A CN105700080 A CN 105700080A
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- China
- Prior art keywords
- convex lens
- lens
- maintaining optical
- polarization maintaining
- coupling system
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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
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2706—Optical coupling means with polarisation selective and adjusting means as bulk elements, i.e. free space arrangements external to a light guide, e.g. polarising beam splitters
- G02B6/2713—Optical coupling means with polarisation selective and adjusting means as bulk elements, i.e. free space arrangements external to a light guide, e.g. polarising beam splitters cascade of polarisation selective or adjusting operations
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses a fiber coupling system capable of maintaining optical polarization, comprising a polarizer (1), a half-wave plate (2), a first convex lens (3), a truncated cone lens (4), a second convex lens (5) and a polarization maintaining fiber (6), wherein the polarizer (1), the half-wave plate (2), the first convex lens (3), the truncated cone lens (4) and the second convex lens (5) are coaxial to the end face of the fiber input end of the polarization maintaining fiber (6), the half-wave plate (2) can rotate in a plane perpendicular to the axis, the focal length of the first convex lens (3) equals to the distance from the first convex lens (3) to the end face of the fiber input end of the polarization maintaining fiber (6), highly-penetrable films are coated on the two end faces of the truncated cone lens (4), the focal length of the second convex lens (5) equals to the distance from the second convex lens (5) to the end face of the fiber input end of the polarization maintaining fiber (6), and the focus of the second convex lens (5) is located in the center of the end face of the fiber input end of the polarization maintaining fiber (6). The fiber coupling system has the advantages of high coupling efficiency and capability of maintaining optical polarization.
Description
Technical field
The present invention relates to a kind of fiber coupling system keeping polarization state, belong to photoelectron technical field。
Background technology
In recent years, optical fiber transmission technique quickly grows, the message capacity of fiber-optic transfer is big, long transmission distance, anti-electromagnetic interference capability are strong, security performance good, cost is low, it has also become one of mainstay of modern communications, plays very important effect in modern communication networks。Fiber coupling system is as a ring indispensable in fibre-optic transmission system (FOTS), and its coupling effect has a strong impact on the performance of fiber-optic transfer。Fiber coupling system mainly realizes the optical coupling between free space and optical fiber, current fiber coupling system coupling efficiency is low, increase the loss in fiber-optic transfer process, improve the bit error rate, and be difficult to keep the polarization state of polarized light in coupling process, cannot determining the polarization direction of light, therefore light polarization be required higher field, current fiber coupling system is difficult to meet。
Summary of the invention
It is an object of the invention to overcome the problem that current fiber coupling system coupling efficiency is low, be difficult to meet the light polarization higher domain requirement of requirement, it is proposed to a kind of fiber coupling system keeping polarization state。
The object of the present invention is achieved like this: it is made up of the polarizer, half-wave plate, the first convex lens, round platform lens, the second convex lens and polarization maintaining optical fibre；
Light enters the polarizer, half-wave plate is entered by polarizer output, the first convex lens is entered by half-wave plate output, round platform lens are entered by the first convex lens output, the second convex lens is entered by the output of round platform lens, entered the optic fibre input end of polarization maintaining optical fibre by the second convex lens output, finally exported by the fiber-optic output of polarization maintaining optical fibre。
Coupling efficiency of the present invention is high, and can keep the polarization state of light, and technical characteristic is as follows:
(1) polarizer described in, half-wave plate, the first convex lens, round platform lens and the central axis of the second convex lens and the optic fibre input end end face central axis of polarization maintaining optical fibre are same axis；
(2) half-wave plate described in can be perpendicular to the rotation with in surface of axis；
(3) focal length of the first convex lens described in is equal to the distance of the first convex lens to the optic fibre input end end face of polarization maintaining optical fibre；
(4) the both ends of the surface plating high transmittance film of the round platform lens described in；
(5) focal length of the second convex lens described in is equal to the distance of the second convex lens to the optic fibre input end end face of polarization maintaining optical fibre, and the focus of the second convex lens is at the center of the optic fibre input end end face of polarization maintaining optical fibre。
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention。
Detailed description of the invention
Below according to Figure of description citing, the present invention is further explained:
Embodiment 1
Shown in Fig. 1, a kind of fiber coupling system keeping polarization state, including the polarizer 1, half-wave plate the 2, first convex lens 3, round platform lens the 4, second convex lens 5, polarization maintaining optical fibre 6；
Light enters the polarizer 1, entrance half-wave plate 2 is exported by the polarizer 1, entrance the first convex lens 3 is exported by half-wave plate 2, entrance round platform lens 4 are exported by the first convex lens 3, entrance the second convex lens 5 is exported by round platform lens 4, exported the optic fibre input end entering polarization maintaining optical fibre 6 by the second convex lens 5, finally exported by the fiber-optic output of polarization maintaining optical fibre 6；
The described polarizer 1, half-wave plate the 2, first convex lens 3, round platform lens 4 and the central axis of the second convex lens 5 and the optic fibre input end end face central axis of polarization maintaining optical fibre 6 are same axis；Half-wave plate 2 can be perpendicular to the rotation with in surface of axis；The focal length of the first convex lens 3 is equal to the distance of the first convex lens 3 to the optic fibre input end end face of polarization maintaining optical fibre 6；The both ends of the surface plating high transmittance film of round platform lens 4；The focal length of the second convex lens 5 is equal to the distance of the second convex lens 5 to the optic fibre input end end face of polarization maintaining optical fibre 6, and the focus of the second convex lens 5 is at the center of the optic fibre input end end face of polarization maintaining optical fibre 6。
Operation principle: input light enters the polarizer 1, if input light is not polarized light, then the polarizer 1 is changed into polarized light, if inputting just polarized light, polarization direction by the polarization directions aligned polarizer 1 of input light, the output light of the polarizer 1 enters half-wave plate 2, half-wave plate 2 can be perpendicular to the rotation with in surface of axis, for adjusting the polarization direction of light, the output light of half-wave plate 2 enters the first convex lens 3, light is converged and enters round platform lens 4 by the first convex lens 3, the both ends of the surface plating high transmittance film of round platform lens 4, reduce the light reflection in round platform lens 4 both ends of the surface, prevent multiple-beam interference effect, because light is entered by the heavy caliber end of round platform lens 4, small-caliber end exports, light is made to converge further after round platform lens 4, reduce spot size, the output light of round platform lens 4 enters the second convex lens 5, entrance polarization maintaining optical fibre 6 is converged by the second convex lens 5, finally exported by the fiber-optic output of polarization maintaining optical fibre 6, owing to the focal length of the first convex lens 3 is equal to first convex lens 3 distance to the optic fibre input end end face of polarization maintaining optical fibre 6, the focal length of the second convex lens 5 is equal to the distance of the second convex lens 5 to the optic fibre input end end face of polarization maintaining optical fibre 6, therefore the first convex lens 3, round platform lens 4, second convex lens 5 combines, enhance the native system convergence effect to light。
In the present embodiment, the polarizer 1, half-wave plate the 2, first convex lens 3, round platform lens 4 and the central axis of the second convex lens 5 and the optic fibre input end end face central axis of polarization maintaining optical fibre 6 are same axis；
In the present embodiment, half-wave plate 2 can be perpendicular to the rotation with in surface of axis；
In the present embodiment, the focal length of the first convex lens 3 is equal to the distance of the first convex lens 3 to the optic fibre input end end face of polarization maintaining optical fibre 6；
The both ends of the surface plating high transmittance film of round platform lens 4 in the present embodiment；
In the present embodiment, the focal length of the second convex lens 5 is equal to the distance of the second convex lens 5 to the optic fibre input end end face of polarization maintaining optical fibre 6, and the focus of the second convex lens 5 is at the center of the optic fibre input end end face of polarization maintaining optical fibre 6。
Claims (8)
1. the fiber coupling system that can keep polarization state, it is characterised in that: include the polarizer (1), half-wave plate (2), the first convex lens (3), round platform lens (4), the second convex lens (5) and polarization maintaining optical fibre (6)；
After light enters the polarizer (1), half-wave plate (2) is entered by the polarizer (1) output, the first convex lens (3) is entered by half-wave plate (2) output, round platform lens (4) are entered by the first convex lens (3) output, the second convex lens (5) is entered by round platform lens (4) output, entered the optic fibre input end of polarization maintaining optical fibre (6) by the second convex lens (5) output, finally exported by the fiber-optic output of polarization maintaining optical fibre (6)。
2. a kind of fiber coupling system keeping polarization state according to claim 1, it is characterised in that: the described polarizer (1), half-wave plate (2), the first convex lens (3), round platform lens (4) and the central axis of the second convex lens (5) and the optic fibre input end end face central axis of polarization maintaining optical fibre (6) they are same axis。
3. a kind of fiber coupling system keeping polarization state according to claim 2, it is characterised in that: described half-wave plate (2) can be perpendicular to the rotation with in surface of axis。
4. a kind of fiber coupling system keeping polarization state as claimed in any of claims 1 to 3, it is characterised in that: the focal length of described the first convex lens (3) is equal to the distance of the first convex lens (3) to the optic fibre input end end face of polarization maintaining optical fibre (6)。
5. a kind of fiber coupling system keeping polarization state as claimed in any of claims 1 to 3, it is characterised in that: the both ends of the surface plating high transmittance film of described round platform lens (4)。
6. a kind of fiber coupling system keeping polarization state as claimed in any of claims 1 to 3, it is characterized in that: the focal length of described the second convex lens (5) is equal to the distance of the second convex lens (5) to the optic fibre input end end face of polarization maintaining optical fibre (6), and the focus of the second convex lens (5) is at the center of the optic fibre input end end face of polarization maintaining optical fibre (6)。
7. a kind of fiber coupling system keeping polarization state according to claim 4, it is characterised in that: the both ends of the surface plating high transmittance film of described round platform lens (4)。
8. a kind of fiber coupling system keeping polarization state according to claim 5, it is characterized in that: the focal length of described the second convex lens (5) is equal to the distance of the second convex lens (5) to the optic fibre input end end face of polarization maintaining optical fibre (6), and the focus of the second convex lens (5) is at the center of the optic fibre input end end face of polarization maintaining optical fibre (6)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610245688.9A CN105700080A (en) | 2016-04-20 | 2016-04-20 | Fiber coupling system capable of maintaining optical polarization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610245688.9A CN105700080A (en) | 2016-04-20 | 2016-04-20 | Fiber coupling system capable of maintaining optical polarization |
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| CN105700080A true CN105700080A (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610245688.9A Pending CN105700080A (en) | 2016-04-20 | 2016-04-20 | Fiber coupling system capable of maintaining optical polarization |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6744991B1 (en) * | 2000-05-19 | 2004-06-01 | Avanex Corporation | Tunable chromatic dispersion and polarization mode dispersion compensator utilizing a virtually imaged phased array |
| CN101222112A (en) * | 2007-12-07 | 2008-07-16 | 中国科学院上海光学精密机械研究所 | Narrow-spectrum all-solid-state single-mode fiber output seed laser |
| CN101762324A (en) * | 2008-11-25 | 2010-06-30 | 深圳市大族激光科技股份有限公司 | LED (light emitting diode) light spectrum detecting device |
| CN102289075A (en) * | 2011-08-02 | 2011-12-21 | 中国科学院上海光学精密机械研究所 | Device and method for generating polarization-state-adjustable hollow light beam |
| CN102566074A (en) * | 2011-12-13 | 2012-07-11 | 深圳朗光科技有限公司 | Polarizer and optical fiber sensor comprising same |
| CN103376510A (en) * | 2012-04-24 | 2013-10-30 | 光越科技(深圳)有限公司 | Polarization-maintaining coupler |
| CN205643771U (en) * | 2016-04-20 | 2016-10-12 | 江苏宇迪光学股份有限公司 | Optic fibre coupled system that can keep light polarization attitude |
-
2016
- 2016-04-20 CN CN201610245688.9A patent/CN105700080A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6744991B1 (en) * | 2000-05-19 | 2004-06-01 | Avanex Corporation | Tunable chromatic dispersion and polarization mode dispersion compensator utilizing a virtually imaged phased array |
| CN101222112A (en) * | 2007-12-07 | 2008-07-16 | 中国科学院上海光学精密机械研究所 | Narrow-spectrum all-solid-state single-mode fiber output seed laser |
| CN101762324A (en) * | 2008-11-25 | 2010-06-30 | 深圳市大族激光科技股份有限公司 | LED (light emitting diode) light spectrum detecting device |
| CN102289075A (en) * | 2011-08-02 | 2011-12-21 | 中国科学院上海光学精密机械研究所 | Device and method for generating polarization-state-adjustable hollow light beam |
| CN102566074A (en) * | 2011-12-13 | 2012-07-11 | 深圳朗光科技有限公司 | Polarizer and optical fiber sensor comprising same |
| CN103376510A (en) * | 2012-04-24 | 2013-10-30 | 光越科技(深圳)有限公司 | Polarization-maintaining coupler |
| CN205643771U (en) * | 2016-04-20 | 2016-10-12 | 江苏宇迪光学股份有限公司 | Optic fibre coupled system that can keep light polarization attitude |
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Application publication date: 20160622 |
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