CN201331599Y - Optical fiber connecting device - Google Patents
Optical fiber connecting device Download PDFInfo
- Publication number
- CN201331599Y CN201331599Y CNU2008202359184U CN200820235918U CN201331599Y CN 201331599 Y CN201331599 Y CN 201331599Y CN U2008202359184 U CNU2008202359184 U CN U2008202359184U CN 200820235918 U CN200820235918 U CN 200820235918U CN 201331599 Y CN201331599 Y CN 201331599Y
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- CN
- China
- Prior art keywords
- optical fiber
- ceramic insertion
- insertion core
- apc
- optoisolator
- 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.)
- Expired - Fee Related
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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
- G02B6/2746—Optical coupling means with polarisation selective and adjusting means comprising non-reciprocal devices, e.g. isolators, FRM, circulators, quasi-isolators
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model provides an optical fiber connecting device, which comprises an optical fiber connector and a free space optoisolator. The optical fiber connector comprises a coupling bushing. A first ceramic ferrule and a first collimating lens are arranged at the front end of the coupling bushing. A second ceramic ferrule is arranged at the rear end of the coupling bushing. The free space optoisolator is placed between the first collimating lens and the second ceramic ferrule. The optoisolator comprises a polarizer, a Faraday rotator, an analyzer and a magnetic ring. The coupling bushing additionally comprises a second collimating lens which is placed between the free space optoisolator and the second ceramic ferrule. At least one port of the optical input and output ports of the optical fiber connector is an SC/PC, SC/APC, LC/PC or LC/APC swap interface or an FC/APC flange type connector. The port is fixed through swap interface threads. When the first ceramic ferrule with tail optical fiber is coupled with a laser diode module without an optoisolator, the manufacturing cost of the laser diode module is reduced.
Description
Technical field
The utility model relates to the optical fiber splicing device of a kind of fiber optic communication field and CATV transmission system, relates in particular to a kind of optical fiber splicing device with optoisolator.
Background technology
Along with Fibre Optical Communication Technology constantly develops, optical fiber splicing device is that various optical devices are connected requisite device with module in the optical fiber telecommunications system, and two are coupled two optical element optical ports to realize the continuity of fiber-optic signal transmission.The basic structure of various types of joints of optical fibre but is consistent, and promptly the Jue Daduoshuo joints of optical fibre generally comprise built-in two ceramic insertion cores of high-accuracy tube coupling, utilizes the fiber end face of ceramic insertion core to aim at the connection that coupling realizes light signal.The main optical characteristics index of weighing joints of optical fibre product quality is for inserting loss (Insert loss) and return loss (Return loss).The essence of echo promptly is light reflection, and according to the Fresnel reflection principle, light when running into the different interface of two kinds of refractive indexes in transmission course Fresnel reflection can take place, and causes the signal stack in the light-path or interferes.In the single mode fiber system of high transfer rate, cable television system (CATV) especially, reflex can produce the time lag of transmission signals, makes signal arrive the time delay of user side, causes the ghost image of image and sharpness to descend.The ordinary optic fibre connector only plays light path and connects and composes the light path connection in light connects, can not effectively isolate the reflected light signal of optical link.
Summary of the invention
The utility model provides a kind of optical fiber splicing device that can isolate the optical link reflected light signal.
For reaching above goal of the invention, the utility model provides a kind of optical fiber splicing device, comprise joints of optical fibre and a free space optoisolator, the described joints of optical fibre comprise a coupling sleeve pipe, the front end of this coupling sleeve pipe is provided with first ceramic insertion core and first collimation lens, and its rear end is provided with second ceramic insertion core; Described free space optoisolator is between described first collimation lens and second ceramic insertion core, and this optoisolator comprises a polarizer, a Faraday rotator, an analyzer and a magnet ring.
Also comprise second collimation lens, these lens are between the described free space optoisolator and second ceramic insertion core.
The light input end mouth of the described joints of optical fibre and output port are SC/PC, SC/APC, LC/PC or LC/APC type plug interface, and described first and second ceramic insertion cores all do not have tail optical fiber.
The output port of the described joints of optical fibre is SC/PC, SC/APC, LC/PC or LC/APC type plug interface, the described first ceramic insertion core magnetic tape trailer fibre, and second ceramic insertion core does not have tail optical fiber.
The described joints of optical fibre are the FC/APC ring flange, and its light input end mouth and output port all are with the plug interface, and described first and second ceramic insertion cores all do not have tail optical fiber.
The described joints of optical fibre are the FC/APC ring flange, its optical output port band plug interface, and the described first ceramic insertion core magnetic tape trailer fibre, second ceramic insertion core does not have tail optical fiber.
Because the optical fiber splicing device of above structure, the built-in free space optoisolator of its coupling sleeve pipe reaches and both satisfies the conducting light paths of light path in connecting, and satisfies in the CATV system performance index requirement to high return loss in the optical fiber link again.No matter be the joints of optical fibre of which kind of structure, if its input end first ceramic insertion core adopts the fine structure of magnetic tape trailer, then this tail optical fiber just can be directly be coupled with the laser assembly of no isolator and manufactures integration module, making does not need in the laser assembly shell isolator is installed in addition, thereby has reduced the manufacturing cost of laser module; If the light input end and the equal plug-in structure of output terminal of this optical fiber splicing device, then first ceramic insertion core and second ceramic insertion core all adopt no tail optical fiber structure, then the optical device of any band contact pin just can be inserted in the two ends of whole optical fiber splicing device, can play to connect light signal and isolate catoptrical effect.
Description of drawings
Fig. 1 represents first kind of structural representation of the utility model optical fiber splicing device;
Fig. 2 represents second kind of structural representation of the utility model optical fiber splicing device.
Preferred forms
Describe the utility model most preferred embodiment in detail below in conjunction with accompanying drawing.
Optical fiber splicing device as shown in Figure 1 comprises a joints of optical fibre 10A and a free space optoisolator 20A.The optical output port of joints of optical fibre 10A is SC/PC, SC/APC, LC/PC or LC/APC type plug interface, comprise a coupling sleeve pipe 11A, front end in this coupling sleeve pipe is provided with the fine 14A first ceramic insertion core 12A of magnetic tape trailer and the first collimation lens 13A, both constitute a single fiber collimating apparatus, and its tail optical fiber connects the laser assembly output terminal; Its rear end is provided with the no tail optical fiber second ceramic insertion core 15A.Free space optoisolator 20A is at the first collimation lens 13A and do not have between the tail optical fiber second ceramic insertion core 15A, and this isolator 20A comprises a polarizer 21A, a Faraday rotator 22A, an analyzer 23A and a magnet ring 24A; By the tail optical fiber 14A of the first ceramic insertion core 12A forward beam of outside input after converging to polarizer 21A, the first collimation lens 13A is become linearly polarized light, the external magnetic field that Faraday rotator 22A gyromagnetic medium forms with magnet ring 24A makes polarization direction dextrorotation 45 degree of flashlight, and make low-loss just by being the analyzer 23A that 45 degree are placed with polarizer 21A, be coupled to the incident light end face output of the second ceramic insertion core 15A at last.For the light signal that reflects along the road in the optical link, when the linearly polarized light of analyzer 23A passes through Faraday rotator 22A gyromagnetic medium, yawing moment is dextrorotation 45 degree also, thereby folded light beam polarization direction and polarizer 21A direction quadrature can not be passed through, thereby blocked catoptrical transmission fully, finally play the buffer action of reflected light signal, in order to strengthen to increase by the second collimation lens 16A between the two from the coupling efficiency of analyzer 23A emergent light end face with the incident light end face of the no tail optical fiber second ceramic insertion core 15A.The tail optical fiber 14A of the first ceramic insertion core 12A is connected to the laser module of no isolator, just can realizes effective isolation of reflected light signal, improve the job stability of laser module.The light input end mouth of joints of optical fibre 10A in this structure and output port also can all adopt SC/PC, SC/APC, LC/PC or LC/APC type plug interface, then first, second ceramic insertion core all adopts no tail optical fiber structure, the optical device of band contact pin just can be inserted in the two ends of the joints of optical fibre, can play to connect light signal and isolate catoptrical effect.
Optical fiber splicing device as shown in Figure 2 comprises a joints of optical fibre 10B and a free space optoisolator 20B.Joints of optical fibre 10B is a FC/APC flange dish-type, its two ends are the plug interface thread and fix, comprise a coupling sleeve pipe 11B, the front end in this coupling sleeve pipe is provided with the no tail optical fiber first ceramic insertion core 12B and the first collimation lens 13B, and both constitute a single fiber collimating apparatus; Its rear end is provided with the no tail optical fiber second ceramic insertion core 15B.Free space optoisolator 20B is at the first collimation lens 13B and do not have between the tail optical fiber second ceramic insertion core 15B, and this isolator 20B comprises a polarizer 21B, a Faraday rotator 22B, an analyzer 23B and a magnet ring 24B.The incident light end face of the no tail optical fiber first ceramic insertion core 12B becomes linearly polarized light with the forward beam of coupled outside input after the first collimation lens 13B converges to polarizer 21B, the external magnetic field that Faraday rotator 22B gyromagnetic medium forms with magnet ring 24B makes polarization direction dextrorotation 45 degree of flashlight, and make low-loss be the analyzer 23B that 45 degree are placed just by become 21B with the polarizer, be coupled to the incident light end face of the second ceramic insertion core 15B at last, insert outside ceramic insertion core light signal is exported.For the light signal that reflects along the road in the optical link, when the linearly polarized light of analyzer 23B passes through Faraday rotator 22B gyromagnetic medium, yawing moment is dextrorotation 45 degree also, thereby folded light beam polarization direction and polarizer 21B direction quadrature can not be passed through, finally play the light buffer action thereby blocked catoptrical transmission fully.For the emergent light end face of strengthening analyzer 23B coupling efficiency, can increase by the second collimation lens 16B between the two with the incident light end face of the no tail optical fiber second ceramic insertion core 15B.Joints of optical fibre 10B in this structure is a FC/APC flange dish-type, also can only be that its optical output port is fixed for the plug interface thread, the first ceramic insertion core 12B magnetic tape trailer fibre then, this tail optical fiber can be used to connect the laser assembly of no optoisolator, the second ceramic insertion core 15B still adopts no tail optical fiber structure, the optical device that has contact pin with the outside is connected, and other structure is constant.Can play equally and connect light signal and isolate catoptrical effect.
Claims (6)
1, a kind of optical fiber splicing device, it is characterized in that, comprise joints of optical fibre and a free space optoisolator, the described joints of optical fibre comprise a coupling sleeve pipe, the front end of this coupling sleeve pipe is provided with first ceramic insertion core and first collimation lens, and its rear end is provided with second ceramic insertion core; Described free space optoisolator is between described first collimation lens and second ceramic insertion core, and this optoisolator comprises a polarizer, a Faraday rotator, an analyzer and a magnet ring.
2, optical fiber splicing device according to claim 1 is characterized in that, also comprises second collimation lens, and these lens are between the described free space optoisolator and second ceramic insertion core.
3, optical fiber splicing device according to claim 1 and 2, it is characterized in that, the light input end mouth of the described joints of optical fibre and output port are SC/PC, SC/APC, LC/PC or LC/APC type plug interface, and described first and second ceramic insertion cores all do not have tail optical fiber.
4, optical fiber splicing device according to claim 1 and 2 is characterized in that, the output port of the described joints of optical fibre is SC/PC, SC/APC, LC/PC or LC/APC type plug interface, the described first ceramic insertion core magnetic tape trailer fibre, and second ceramic insertion core does not have tail optical fiber.
5, optical fiber splicing device according to claim 1 and 2 is characterized in that, the described joints of optical fibre are the FC/APC ring flange, and its light input end mouth and output port are the plug interface thread and fix, and described first and second ceramic insertion cores all do not have tail optical fiber.
6, optical fiber splicing device according to claim 1 and 2 is characterized in that, the described joints of optical fibre are the FC/APC ring flange, and its optical output port band plug interface thread is fixed, the described first ceramic insertion core magnetic tape trailer fibre, and second ceramic insertion core does not have tail optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202359184U CN201331599Y (en) | 2008-12-29 | 2008-12-29 | Optical fiber connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202359184U CN201331599Y (en) | 2008-12-29 | 2008-12-29 | Optical fiber connecting device |
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|---|---|
| CN201331599Y true CN201331599Y (en) | 2009-10-21 |
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| CNU2008202359184U Expired - Fee Related CN201331599Y (en) | 2008-12-29 | 2008-12-29 | Optical fiber connecting device |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033272A (en) * | 2011-01-06 | 2011-04-27 | 苏州天孚精密陶瓷有限公司 | Subminiature optical fiber connector with isolator |
| 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 |
| CN102944918A (en) * | 2012-11-10 | 2013-02-27 | 华中科技大学 | Faraday rotation mirror structure |
| CN103293606A (en) * | 2013-05-13 | 2013-09-11 | 光库通讯(珠海)有限公司 | Fiber adapter and measurement method for extinction ratio of optical fiber connector |
| CN103364894A (en) * | 2012-03-30 | 2013-10-23 | 富士通株式会社 | Optical transmitter, optical module, and optical connector |
| CN103901545A (en) * | 2014-03-21 | 2014-07-02 | 上海大学 | Lens self-coupling type optical fiber adapter |
| CN104035159A (en) * | 2014-06-25 | 2014-09-10 | 深圳市越海光通信科技有限公司 | Compact-type polarization-maintaining three-port optical circulator |
| TWI454766B (en) * | 2009-12-31 | 2014-10-01 | Hon Hai Prec Ind Co Ltd | Optical fiber coupling connector and optical transmitting device |
| CN104819737A (en) * | 2015-04-16 | 2015-08-05 | 厦门时变光纤传感技术有限公司 | Optical fiber sensing system and method for acquiring polarization-related measurement data |
| CN105044848A (en) * | 2015-08-25 | 2015-11-11 | 珠海保税区光联通讯技术有限公司 | Pluggable miniature optical passive device |
| CN105388569A (en) * | 2015-12-18 | 2016-03-09 | 河北四方通信设备有限公司 | FC/PC double-end optical fiber coupling assembly |
| CN105954834A (en) * | 2016-07-11 | 2016-09-21 | 武汉优信光通信设备有限责任公司 | Free space optical isolator with collimating lenses |
| CN109212764A (en) * | 2018-11-12 | 2019-01-15 | 珠海市杰威光电科技有限公司 | A kind of high point precision optical fiber component |
| CN110911960A (en) * | 2019-12-02 | 2020-03-24 | 江苏师范大学 | Laser lighting and display device based on fluorescent ceramic rod |
| US11150421B2 (en) | 2019-05-31 | 2021-10-19 | Molex, Llc | Optical fiber ferrule adapter |
| CN115437083A (en) * | 2022-09-28 | 2022-12-06 | 四川华岭光子科技有限公司 | Optical path coupling assembly and optical module with same |
-
2008
- 2008-12-29 CN CNU2008202359184U patent/CN201331599Y/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI454766B (en) * | 2009-12-31 | 2014-10-01 | Hon Hai Prec Ind Co Ltd | Optical fiber coupling connector and optical transmitting device |
| CN102033272A (en) * | 2011-01-06 | 2011-04-27 | 苏州天孚精密陶瓷有限公司 | Subminiature optical fiber connector with isolator |
| 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 |
| CN102566074B (en) * | 2011-12-13 | 2013-11-13 | 深圳朗光科技有限公司 | Polarizer and optical fiber sensor comprising same |
| CN103364894A (en) * | 2012-03-30 | 2013-10-23 | 富士通株式会社 | Optical transmitter, optical module, and optical connector |
| CN102944918A (en) * | 2012-11-10 | 2013-02-27 | 华中科技大学 | Faraday rotation mirror structure |
| CN102944918B (en) * | 2012-11-10 | 2013-12-25 | 华中科技大学 | Faraday rotation mirror structure |
| CN103293606B (en) * | 2013-05-13 | 2015-06-03 | 光库通讯(珠海)有限公司 | Fiber adapter and measurement method for extinction ratio of optical fiber connector |
| CN103293606A (en) * | 2013-05-13 | 2013-09-11 | 光库通讯(珠海)有限公司 | Fiber adapter and measurement method for extinction ratio of optical fiber connector |
| CN103901545A (en) * | 2014-03-21 | 2014-07-02 | 上海大学 | Lens self-coupling type optical fiber adapter |
| CN104035159A (en) * | 2014-06-25 | 2014-09-10 | 深圳市越海光通信科技有限公司 | Compact-type polarization-maintaining three-port optical circulator |
| CN104819737A (en) * | 2015-04-16 | 2015-08-05 | 厦门时变光纤传感技术有限公司 | Optical fiber sensing system and method for acquiring polarization-related measurement data |
| CN104819737B (en) * | 2015-04-16 | 2017-06-27 | 厦门时变光纤传感技术有限公司 | A kind of method for obtaining the measurement data related to polarization |
| US11022759B2 (en) | 2015-08-25 | 2021-06-01 | Molex, Llc | Pluggable miniature optical passive device |
| CN105044848A (en) * | 2015-08-25 | 2015-11-11 | 珠海保税区光联通讯技术有限公司 | Pluggable miniature optical passive device |
| WO2017032328A1 (en) * | 2015-08-25 | 2017-03-02 | 珠海保税区光联通讯技术有限公司 | Pluggable miniature optical passive device |
| CN105388569A (en) * | 2015-12-18 | 2016-03-09 | 河北四方通信设备有限公司 | FC/PC double-end optical fiber coupling assembly |
| CN105954834A (en) * | 2016-07-11 | 2016-09-21 | 武汉优信光通信设备有限责任公司 | Free space optical isolator with collimating lenses |
| CN109212764A (en) * | 2018-11-12 | 2019-01-15 | 珠海市杰威光电科技有限公司 | A kind of high point precision optical fiber component |
| US11150421B2 (en) | 2019-05-31 | 2021-10-19 | Molex, Llc | Optical fiber ferrule adapter |
| CN110911960A (en) * | 2019-12-02 | 2020-03-24 | 江苏师范大学 | Laser lighting and display device based on fluorescent ceramic rod |
| CN115437083A (en) * | 2022-09-28 | 2022-12-06 | 四川华岭光子科技有限公司 | Optical path coupling assembly and optical module with same |
| WO2024066048A1 (en) * | 2022-09-28 | 2024-04-04 | 四川华岭光子科技有限公司 | Optical path coupling assembly and optical module having optical path coupling assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Fibercom Technologies (Shenzhen) Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Fibercom Technologies (Shenzhen) Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20131229 |