CN203519890U - Single-fiber two-directional optical transceiver - Google Patents
Single-fiber two-directional optical transceiver Download PDFInfo
- Publication number
- CN203519890U CN203519890U CN201320726377.6U CN201320726377U CN203519890U CN 203519890 U CN203519890 U CN 203519890U CN 201320726377 U CN201320726377 U CN 201320726377U CN 203519890 U CN203519890 U CN 203519890U
- Authority
- CN
- China
- Prior art keywords
- tube core
- optical
- optical fiber
- main body
- degree
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 73
- 239000000835 fiber Substances 0.000 title claims abstract description 30
- 239000013307 optical fiber Substances 0.000 claims abstract description 41
- 238000002955 isolation Methods 0.000 description 18
- 230000005540 biological transmission Effects 0.000 description 8
- 230000006854 communication Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model discloses a single-fiber two-directional optical transceiver, which comprises a main body (1), a first receiving tube core (2) for receiving user signals, a second receiving tube core (3) for receiving external signals and an optical fiber pigtail (4); the main body (1) is internally provided with a 45-DEG filter (5); the first receiving tube core (2) and the optical fiber pigtail (4) are arranged at two sides of the main body (1); the first receiving tube core (2), the main body (1) and the optical fiber pigtail (4) are in a straight line in the same direction; the second receiving tube core (3) is located at the upper side of the main body (1), and the second receiving tube core (3) and the main body (1) are in the same straight line in the vertical direction; a first 0-DEG filter (6) is arranged between the main body (1) and the second receiving tube core (3); and a second 0-DEG filter (6) is arranged between the first receiving tube core (2) and the main body (1). The single-fiber two-directional optical transceiver is small in size, high in performances and low in cost.
Description
Technical field
The utility model relates to the technical field of optical-fibre communications equipment, relates to or rather a kind of single fiber bi-directional optical transceiving device.
Background technology
Along with the fast development of the develop rapidly of Fibre Optical Communication Technology, particularly high-speed local area network, Optical Access Network and cable television system, the application of the optic components such as optoelectronic transceivers, the joints of optical fibre in fibre system will be more extensive.In order to realize the integration of three networks on the basis of conventional network equipment, the concept of optical fiber radio frequency transmission has been proposed now.Along with the development of light transmission research, the capacity expansion and upgrading of wavelength-division multiplex technique to network, development width business, excavates fiber broadband ability, realizes the tools such as hypervelocity communication and is of great significance, and has therefore occurred the concept of Wave division multiplexing passive optical network transmission.In optical fiber radio frequency transmission system, used at present a large amount of single-optical fiber bi-directional transceiver parts.Single-optical fiber bi-directional transceiver part is the electrooptical device that one is launched, is received in to collection, and it can realize the function of data transmitted in both directions on simple optical fiber.For realizing the function that receives and launch, single fiber bi-directional optical transceiving device comprises the parts such as laser instrument, detector, wavelength-division multiplex optical filter and the joints of optical fibre.And optical fiber radio frequency transmission and sharing that Wave division multiplexing passive optical network transmits will inevitably cause the phase mutual interference of Wave division multiplexing passive optical network signal transmission and optical fiber radio frequency signal transmission.As shown in Figure 1, be the structural design drawing of the single fiber bi-directional optical transceiving device that uses in current optical fiber radio frequency transmission system.Described single fiber bi-directional optical transceiving device comprises body 1 ', for receiving first of subscriber signal, receives tube core 2 ', for receiving second of external signal, receives tube core 3 ' and optical fiber pigtail 4 '.In described body 1 ', be provided with 45 degree optical filters 5 '.The both sides that the first described reception tube core 2 ' and optical fiber pigtail 4 ' are located at described body 1 ', and described the first reception tube core 2 ', body 1 ' and optical fiber pigtail 4 ' are on the straight line of same level direction.Described second receives the upside that tube core 3 ' is positioned at described body 1 ', and second described in this receives tube core 3 ' and described body 1 ' on the straight line of same vertical direction.Described first receive tube core 2 ' and optical fiber pigtail 4 ' through ' cross the refraction transmit optical signals in the horizontal direction of 45 degree optical filters 5 ' of body 1 '; The second described reception tube core 3 ' and optical fiber pigtail 4 ' transmitting optical signal after the reflection of 45 degree optical filters 5 ' of body.Described body 1 ' and second receives between tube core 3 ' and is also provided with 0 degree optical filter 6 '.
The signal of communication of selecting in above-mentioned single fiber bi-directional optical transceiving device is that up 1610nm transmitting, descending 1550nm receive.What realize wavelength-division multiplex function is the cooperation of the 45 degree optical filters (isolation curve is shown in figure bis-" 1610T/1550R 45d Filter Curve ") of a set of 1610T/1550R and the 0 degree optical filter (isolation curve is shown in figure bis-" 1550T 0d filtration curve ") of 1550T, and from figure bis-curves, we can find out that when this cover optical filter is used in conjunction with, receiving end (with that end of fiber-coaxial) is greater than 30dB to the isolation of 1260 ~ 1500nm and 1590 ~ 1620nm light signal; Transmitting terminal (i.e. that end vertical with optic fibre light path) is greater than 30dB to the isolation of 1540 ~ 1560nm light signal, but the light signal of 1260 ~ 1500nm is not almost had to buffer action.On market, more and more occur now the system of RFOG and PON use, require to transmit the signal of 1310 nm, 1490 nm, 1550nm and tetra-wave bands of 1610nm simultaneously in same optical fiber, between signal, can not crosstalk, isolation at least will reach 30dB.And the single fiber bi-directional optical transceiving device generally using on present market does not almost have buffer action to the light signal of 1260 ~ 1500nm.
In current technology for to avoid the phase mutual interference between signal to have two kinds of processing modes.A kind of is exactly the insulated degree requirement that improves 45 degree optical filters in single fiber bi-directional optical transceiving device.But with current coating technique will be at 1260 ~ 1500nm this more than 200, in nanometer range, to have very high isolation be in the cards hardly for the optical filter of 45 degree.As shown in figure bis-" New 1610T/1550R 45d Filter Curve ", the best isolation of 45 degree optical filters within the scope of 1260 ~ 1500nm only has 15 ~ 20dB, even and be only to reach its cost of this isolation effect also will be higher 2 times than the cost of " 1610T/1550R 45d Filter Curve " shown in figure bis-optical filter (at present in single fiber bi-directional optical transceiving device general 45 degree optical filters).If will improve isolation again, the cost of plated film will become how much multiples to increase, and this expensive consumption obviously can not obtain market approval.
Another kind of processing mode is exactly the requirement that adopts the dense wave division multiplexer part of the 1550 & 1610T/1310R with wavelength-division multiplex and demultiplexing function and meet high-isolation for the mode of the single fiber bi-directional optical transceiving device cascade of optical fiber radio frequency transmission system.This mode has two drawbacks, and the one, the cost of dense wave division multiplexer part is very high, can increase the cost of whole equipment; Another is exactly the volume that has increased equipment.At present, in communication system, the volume of equipment is more and more less.Therefore, also more and more higher for the volume requirement of light-receiving/ballistic device.And dense wave division multiplexer part need to be considered the winding problem of optical fiber, need to be in optical-fibre communications equipment or module the element of a winding optical fiber of specialized designs, and the coiling diameter of optical fiber has certain requirement, general conventional Optical Fiber Winding least radius is 30mm, bend insensitive fiber is wound around radius also needs to be greater than 15mm, and needs very large space to place the optical fiber of winding.Therefore limited the minimum volume of equipment or modular design.
No matter be by improving the isolation of 45 degree optical filters or the design of dense wave division multiplexer part and the cascade of fine bidirectional light receiving and transmitting device, be not also all best settling mode on volume or cost.The volume requirement of optical communication equipment to light-receiving/ballistic device, more and more needs us to accomplish high integration at present, has reached small size, high-performance, requirement cheaply.
Prior art: 1 ', body, 2 ', first receives tube core, and 3 ', second receives tube core, and 4 ', optical fiber pigtail, 5 ', 45 degree optical filters, 6 ', 0 degree optical filter.
The utility model: 1, body, 2, first receives tube core, and 3, second receives tube core, and 4, optical fiber pigtail, 5,45 degree optical filters, the 6, the 1 degree optical filter, the 7, the 20 degree optical filter.
Utility model content
The technical problems to be solved in the utility model is that the single fiber bi-directional that a kind of volume is little, performance is high and cost is low optical transceiving device is provided.
Technical solution of the present utility model is, a kind of single fiber bi-directional optical transceiving device with following structure is provided, and comprises body, for receiving first of subscriber signal, receives tube core, for receiving second of external signal, receives tube core and optical fiber pigtail; In described body, be provided with 45 degree optical filters; Described first receives tube core and optical fiber pigtail is located at the both sides and described first of described body and receives tube core, body and optical fiber pigtail on the straight line of same level direction; Described second receives tube core is positioned at the upside of described body and this second and receives tube core and described body on the straight line of same vertical direction; Between described body and the second reception tube core, be provided with the one 0 degree optical filter; Between the first described reception tube core and described body, be provided with the 20 degree optical filter.
Adopt after above structure, single fiber bi-directional optical transceiving device of the present utility model, compared with prior art, has the following advantages:
Because single fiber bi-directional optical transceiving device of the present utility model receives and is provided with the 20 between tube core and described body and spends optical filter described first, the 20 degree optical filter can be isolated stray light, thereby can effectively isolate crosstalking of unlike signal part, the isolation performance of raising equipment, but also can not increase volume, raise the cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the single fiber bi-directional optical transceiving device of prior art.
Fig. 2 is the light isolation effect figure of the single fiber bi-directional optical transceiving device of prior art.
Fig. 3 is the structural representation of single fiber bi-directional optical transceiving device of the present utility model.
Fig. 4 is the light isolation effect figure of single fiber bi-directional optical transceiving device of the present utility model.
Shown in figure:
embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 3, single fiber bi-directional optical transceiving device of the present utility model comprises that body 1, first receives tube core 2, second and receives tube core 3 and optical fiber pigtail 4.The first described reception tube core 2 is for receiving external signal.The second described reception tube core 3 is for receiving subscriber signal.In described body 1, be provided with 45 degree optical filters 5.Described first receives tube core 2 and optical fiber pigtail 4 is located at the both sides and described first of described body 1 and receives tube core 2, body 1 and optical fiber pigtail 4 on the straight line of same level direction.Described second receives tube core 3 is positioned at the upside of described body 1 and this second and receives tube core 3 and described body 1 on the straight line of same vertical direction.Between described body 1 and the second reception tube core 3, be provided with the one 0 degree optical filter 6; Between the first described reception tube core 2 and described body 1, be provided with the 20 degree optical filter 7.So-called 0 degree optical filter refers to that optical filter and incident beam are vertical, and 45 degree optical filters refer to the angle that forms 45 degree between optical filter and incident beam.
The principle of work of single fiber bi-directional optical transceiving device of the present utility model is: user signals to the second reception tube core 3; Second receives tube core 3 is transformed into light signal by electric signal; After filtering through the 20 degree optical filter 7; Through 45 degree optical filters in body, filter and enter in optical fiber pigtail 4 after 5 again; The light signal that optical fiber pigtail 4 transmittings are gone out also transmits the light signal fed back being launched by external unit; Light signal fed back is transferred on the degree of 45 in body 1 optical filter 5 through optical fiber pigtail 4, after 45 degree optical filter 5 reflections, is transferred in the second reception tube core 3, completes optical communication process.
As shown in Figure 4, be the light isolation effect figure of single fiber bi-directional optical transceiving device of the present utility model, for the 20 degree optical filter, in the wavelength coverage of 1260-1560nm, to accomplish that high transmission isolation is just easier, on cost, can not increase a lot yet.Anti-reflection film/high-reflecting film that the 20 degree optical filter plating is selected through special wavelength, can reach the isolation effect shown in figure tetra-" New 0d Filter Curve (1610T) ".More than the 30dB that our whole device just can be accomplished to require to the isolation of 1260-1560nm light signal like this, well isolate crosstalk signal.
Claims (1)
1. a single fiber bi-directional optical transceiving device, comprises body (1), for receiving first of subscriber signal, receives tube core (2), for receiving second of external signal, receives tube core (3) and optical fiber pigtail (4); In described body (1), be provided with 45 degree optical filters (5); Described first receives tube core (2) and optical fiber pigtail (4) is located at the both sides of described body (1) and described the first reception tube core (2), body (1) and optical fiber pigtail (4) on the straight line of same level direction; Described second receives tube core (3) is positioned at the upside of described body (1) and this second and receives tube core (3) and described body (1) on the straight line of same vertical direction; Between described body (1) and the second reception tube core (3), be provided with the one 0 degree optical filter (6); It is characterized in that: between the first described reception tube core (2) and described body (1), be provided with the 20 degree optical filter (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320726377.6U CN203519890U (en) | 2013-11-18 | 2013-11-18 | Single-fiber two-directional optical transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320726377.6U CN203519890U (en) | 2013-11-18 | 2013-11-18 | Single-fiber two-directional optical transceiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203519890U true CN203519890U (en) | 2014-04-02 |
Family
ID=50378801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320726377.6U Expired - Lifetime CN203519890U (en) | 2013-11-18 | 2013-11-18 | Single-fiber two-directional optical transceiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203519890U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103955033A (en) * | 2014-04-16 | 2014-07-30 | 武汉电信器件有限公司 | Built-in integrated PON single-fiber four-directional light device capable of achieving RFoG function |
| CN104914519A (en) * | 2015-05-22 | 2015-09-16 | 武汉联特科技有限公司 | 40G optical transceiving module |
-
2013
- 2013-11-18 CN CN201320726377.6U patent/CN203519890U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103955033A (en) * | 2014-04-16 | 2014-07-30 | 武汉电信器件有限公司 | Built-in integrated PON single-fiber four-directional light device capable of achieving RFoG function |
| CN104914519A (en) * | 2015-05-22 | 2015-09-16 | 武汉联特科技有限公司 | 40G optical transceiving module |
| CN104914519B (en) * | 2015-05-22 | 2017-06-27 | 武汉联特科技有限公司 | A kind of 40G optical transceiver modules |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102279445B (en) | Single-fiber bidirectional double-port light receiving and transmitting integral component | |
| CN107710645B (en) | Optical device and optical module | |
| CN203535266U (en) | Multi-wavelength optical transceiver module of single optical fiber coupling | |
| EP2907250B1 (en) | Optical communication system, method of bi-directional communication and method of operating a network element | |
| CN104133273A (en) | Single-fiber bidirectional optical transceiving assembly | |
| CN203838375U (en) | Single-fiber passive single-mode and multi-mode transmission converter and optical fiber transmission system | |
| CN102255669B (en) | C form-factor pluggable (CFP) transponder with interleaver at receiver | |
| CN105652395A (en) | Multi-wavelength optical transceiving module | |
| CN203519890U (en) | Single-fiber two-directional optical transceiver | |
| CN102231652A (en) | C form-factor pluggable (CFP) optical transceiver with interleaver | |
| CN101741475B (en) | Fiber-to-the-home planar lightwave circuit triplexer | |
| CN109917523A (en) | A kind of wavelength interval is less than the 50G simplex optical module of 20nm | |
| CN101750681A (en) | 1550/1550 nm single wavelength single-fiber bidirectional component | |
| US20040161240A1 (en) | Module having two bi-directional optical transceivers | |
| US20120093518A1 (en) | Single package bidirectional module for multimode fiber communication | |
| CN210839596U (en) | Wavelength division multiplexing system and wavelength division multiplexing system for CWDM signal transmission | |
| CN102723996A (en) | Single fiber bi-directional optical component, optical module and optical network device | |
| CN201716439U (en) | Single-fiber, two-way and dual-port optical transmission and reception integrated component | |
| CN104518831A (en) | Optical component and method supporting coexistence of two passive optical networks | |
| CN201986098U (en) | Coarse wavelength division multiplexing photoelectric device of ten-thousand XGPON (10 Gigabit-passive optical network) optical network unit | |
| CN113970818A (en) | Single-fiber bidirectional component for realizing adjacent 20nm | |
| CN201892762U (en) | Wavelength division multiplexing and demultiplexing optical component for CFP-LR4 | |
| US20200186274A1 (en) | Optical duplexer and optical transceiving system | |
| CN201654271U (en) | Planar optical waveguide type single-fiber three-way multiplexer used for fiber to the home | |
| CN201740889U (en) | Single-fiber bidirectional dual-port optical-transceiving integrated module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
|
| CX01 | Expiry of patent term |