CN203942607U - A kind of multichannel optical fiber transmission network framework - Google Patents
A kind of multichannel optical fiber transmission network framework Download PDFInfo
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- CN203942607U CN203942607U CN201420323262.7U CN201420323262U CN203942607U CN 203942607 U CN203942607 U CN 203942607U CN 201420323262 U CN201420323262 U CN 201420323262U CN 203942607 U CN203942607 U CN 203942607U
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Abstract
A multichannel optical fiber transmission network framework, it comprises two two light emitting modules; One optical coupler, this optical coupler has two inputs and an output, and two of this optical coupler inputs are connected with these two two light emitting modules respectively again; One optical branching device, this optical branching device has an input and two outputs, is connected again between the input of this optical branching device and the output of optical coupler by a monomode fiber; Two two optical modules of receiving, these two two optical modules of receiving are connected with two outputs of this optical branching device respectively; By adopting two light emitting modules and two optical modules of receiving to replace existing single-shot SDI optical module and the single SDI of receipts optical module, thereby make the utility model can reduce the use amount of optical module, by the cheap optical coupler of use and optical branching device, substitute four road CWDM multiplexer and CWDM de-multiplexers again, and then make the utility model can reach the effect of simplifying overall structure and significantly reducing costs.
Description
Technical field
The utility model relates to a kind of optical fiber transmission network framework, espespecially a kind of optical fiber transmission network framework of HD video.
Background technology
SDI interface (Serial Digital Interface, digital component serial line interface) be one of video (containing the audio frequency) camera-shooting and recording device of current film studio broadcast grade or mainstream standard of high-definition video signal transmission, it uses without the real-time Transmission mode of compression and transmits HD video, thereby become many high-quality that require, the preferred solution of the application scenario of low transmission delay, wherein, at SDI optical module SDI SFP (Small Form factor Pluggable for example, compact package can plug) after optical module occurs, further realized remote high definition video transmission.
As shown in Figure 1, traditionally, Yao Rang tetra-road SDI vision signals realize long-distance transmission, four single-shot SDI optical modules 10 can be connected to a CWDM multiplexer 12 (Coarse Wavelength Division Multiplexing Multiplexer, rough segmentation ripple multiplex (MUX) multiplexer), and four single SDI optical modules 11 of receiving are connected to a CWDM de-multiplexer 13, with a monomode fiber 2, connect this CWDM multiplexer 12 and CWDM de-multiplexer 13 again, although so can realize Jiang Si road SDI vision signal, with the light signal of four different wave length λ 1～λ 4, carry out single fiber transmission, yet this kind of framework need consume the optical module of a greater number, the CWDM multiplexer 12 on Qie Si road is all comparatively expensive with the price of CWDM de-multiplexer 13 devices such as grade, cause the cost that builds of integral device to improve, and then limit it and promote with universal, so, how for above-mentioned disappearance, to be improved, be the technical difficulties place that this case applicant institute wish solves.
Utility model content
Because existing HD video long-distance transmission framework, because using more optical module and comparatively expensive CWDM multiplexer and CWDM de-multiplexer, cause holistic cost higher, so the purpose of this utility model is to develop a kind of multichannel optical fiber transmission network framework reducing costs.
For reaching above object, the utility model provides a kind of multichannel optical fiber transmission network framework, and it comprises: two two light emitting modules; One optical coupler, this optical coupler has two inputs and an output, and two of this optical coupler inputs are connected with these two two light emitting modules respectively again; One optical branching device, this optical branching device has an input and two outputs, is connected again between the input of this optical branching device and the output of optical coupler by a monomode fiber; Two two optical modules of receiving, these two two optical modules of receiving are connected with two outputs of this optical branching device respectively.
By adopting two light emitting modules and two optical modules of receiving to replace existing single-shot SDI optical module and the single SDI of receipts optical module, and make the utility model can reduce the use amount of optical module, by the cheap optical coupler of use and optical branching device, substitute four road CWDM multiplexer and CWDM de-multiplexers again, and then make the utility model can reach the effect of simplifying overall structure and significantly reducing costs.
Accompanying drawing explanation
Fig. 1 is existing optical fiber transmission network configuration diagram;
Fig. 2 is configuration diagram of the present utility model;
Fig. 3 is the structural representation of optical module in the utility model;
Fig. 4 is the structural representation of the optical secondary module of two light emitting modules in the utility model;
Fig. 5 is the configuration diagram of the second embodiment of the present utility model;
Fig. 6 is the structural representation of optical secondary module of the single hole four road optical modules of Fig. 5.
Description of reference numerals: 10-single-shot SDI optical module; The mono-receipts of 11-SDI optical module; 12-CWDM multiplexer; 13-CWDM de-multiplexer; 2-monomode fiber; The two light emitting modules of 3-; The two optical modules of receiving of 3a-; 31-circuit board; 311-electrical interface; 32-optical interface; 33-electronics secondary module; 34-optical secondary module; 341-optical fiber interface; 342-WDM filter; 343-optical transceiver cell; 344-the 2nd WDM filter; 345-the 3rd WDM filter; 4-optical coupler; 41-input; 42-output; 5-optical branching device; 51-input; 52-output; 6-monomode fiber; 7-the first single hole four road optical modules; 7a-the second single hole four road optical modules.
Embodiment
As shown in Figure 2, the utility model provides a kind of multichannel optical fiber transmission network framework, and it comprises:
Two two light emitting modules 3, more specifically, this pair of light emitting module 3 can be two SDI SFP optical modules of sending out, therefore, the utility model is applicable to the application of HD video Optical Fiber Transmission, as shown in Figure 3, this pair of light emitting module 3 one end are provided with an optical interface 32, use for optical fiber splice and peg graft, wherein this optical fiber splice can be LC, the pattern such as SC or MU, in this pair of light emitting module 3, be provided with again a circuit board 31 and an optical secondary module (Optical Subassembly, OSA) 34, this optical secondary module 34 is electrically connected with circuit board 31, this circuit board 31 is in being provided with an electrical interface 311 (being golden finger) near this pair of light emitting module 3 other ends, for example, in order to connect signal for example transmitting terminal or the receiving terminal (HD video camera-shooting and recording device or high definition screen) of sdi signal, this circuit board 31 is provided with an electronics secondary module (Electrical Subassembly, ESA) 33, this electronics secondary module 33 is electrically connected with this electrical interface 311 and optical secondary module 34 respectively, as shown in Figure 4, in this optical secondary module 34, include an optical fiber interface 341 corresponding with this optical interface 32, 342 and two optical transceiver cells 343 of one WDM filter (WDM Filter), before one of them optical transceiver cell 343 is sequentially with this WDM filter 342 and optical fiber interface 341, rear linearity is arranged, 343 of another optical transceiver cells are positioned at the position on the light reflection path of this WDM filter 342, in this figure, this optical transceiver cell 343 more specifically with optical transmitting set for example laser diode (Laser Diode) illustrate, other thin portion structures of this pair of light emitting module 3 are person of ordinary skill in the field and know again, do not repeat them here,
One optical coupler (optical coupler, claim that again optical combiner is optical combiner) 4, in the present embodiment, this optical coupler 4 has two inputs 41 and an output 42, also this optical coupler 4 is 2x1 optical coupler, and two of this optical coupler 4 inputs 41 are connected with the optical interface 32 of these two two light emitting modules 3 respectively again;
One optical branching device (optical splitter) 5, in the present embodiment, this optical branching device 5 has an input 51 and two outputs 52, also this optical branching device 5 is 1x2 optical branching device, between the input 51 of this optical branching device 5 and the output 42 of optical coupler 4, by a monomode fiber 6, be connected again, this optical branching device 5 all belongs to known technology with the thin portion structure of optical coupler 4 again;
Two two optical module 3a that receive, more specifically, this pair received optical module 3a and can be the two SDI of receipts SFP optical modules, as shown in Figure 3 and Figure 4, at this, the structure that this pair received optical module 3a forms identical with the structure composition of this pair of light emitting module 3, difference is only that different (radiating portion is mainly laser drive circuit to both side circuits of electronics secondary module 33, receiving unit comprises pre-amplification circuit, across resistance amplifying circuit (TIA) and amplitude limiting amplifier circuit), and two optical transceiver cells 343 of the optical secondary module 34 of this couple of receipts optical module 3a are specially for example photodiode (Photo Diode) of photo-detector, in addition, these two two optical interfaces 32 of receiving optical module 3a are connected with two outputs 52 of this optical branching device 5 respectively, as shown in Figure 2,
As Fig. 2, shown in Fig. 3 and Fig. 4, in the optical secondary module 34 of the optical secondary module 34 of this pair of light emitting module 3 or two receipts optical module 3a, be respectively equipped with this WDM filter 342 and two optical transceiver cells 343, also this optical secondary module 34 is a kind of bi-directional optical secondary module (Bi-directional OSA, BOSA), thereby can there is the function of the two transmittings of single hole optical fiber or the double reception of single hole optical fiber, by this optical coupler 4 and optical branching device 5, have light signal combination or the separated function of a plurality of passages (being multichannel) again simultaneously, and then make the utility model also can be as framework of the prior art, reach the object that Jiang Si road SDI vision signal is carried out single fiber transmission with the light signal of four different wave length λ 1～λ 4,
As shown in Fig. 2 and Fig. 4, by adopting two light emitting modules 3 and two optical module 3a that receive to replace existing single-shot SDI optical module 10 and the single SDI of receipts optical module 11, thereby make the utility model can reduce the use amount of optical module, by the cheap a lot of optical coupler 4 of use and optical branching device 5, substitute expensive Si road CWDM multiplexers 12 and CWDM de-multiplexers 13 again, and then make the utility model can reach the effect of simplifying overall structure and significantly reducing costs;
Be illustrated in figure 5 the second embodiment of the present utility model, wherein these two two light emitting modules 3 and two two optical module 3a that receive can substitute with at least two the first single hole four road optical modules 7 and at least two the second single hole four road optical module 7a respectively, and the quantity of the input 41 of this optical coupler 4 is at least two, the quantity of the output 52 of this optical branching device 5 is at least two, also be that optical coupler 4 of the present utility model and optical branching device 5 can be extended to Nx1 and 1xN framework, wherein N≤2, again, more specifically, these the first single hole four road optical modules 7 and the second single hole four road optical module 7a all can be single hole four road SDI optical modules, it is identical with the structure composition of this pair of light emitting module 3 or two receipts optical module 3a that the structure of these the first single hole four road optical modules 7 or the second single hole four road optical module 7a forms, as shown in Figure 6, difference is that the quantity of the optical transceiver cell 343 of these the first single hole four road optical modules 7 or second single hole four road its inner optical secondary modules 34 of optical module 7a is four, in the present embodiment, these four optical transceiver cells 343 illustrate and (but are in fact not limited to this kind of number combinations mode with two optical transmitting sets and two photo-detectors, such as also can three the compound mode such as photo-detectors of optical transmitting sets collocation or three photo-detectors of an optical transmitting set collocation), in addition, these the first single hole four road optical modules 7 or interior one the 2nd WDM filter 344 and one the 3rd WDM filter 345 of further including of second single hole four its optical secondary modules 34 of road optical module 7a, and in these four optical transceiver cells 343, one of them optical transceiver cell 343 and this WDM filter 342, the 2nd WDM filter 344, before the 3rd WDM filter 345 and optical fiber interface 341 are sequentially, rear linearity is arranged, 343 of its excess-three optical transceiver cells lay respectively at this WDM filter 342, position on the light reflection path of the 2nd WDM filter 344 and the 3rd WDM filter 345, therefore, these the first single hole four road optical modules 7 or the second single hole four road optical module 7a can realize four access functions of the two transmitting of single hole optical fiber double reception, thereby make the utility model reduce to a greater extent optical fiber use amount, and improve transmission usefulness and the expansion elasticity of total system.
Claims (8)
1. a multichannel optical fiber transmission network framework, is characterized in that, it comprises:
Two two light emitting modules;
One optical coupler, this optical coupler has two inputs and an output, and two of this optical coupler inputs are connected with these two two light emitting modules respectively again;
One optical branching device, this optical branching device has an input and two outputs, is connected again between the input of this optical branching device and the output of optical coupler by a monomode fiber;
Two two optical modules of receiving, these two two optical modules of receiving are connected with two outputs of this optical branching device respectively.
2. multichannel optical fiber transmission network framework as claimed in claim 1, wherein this pair of light emitting module is two SDI SFP optical modules of sending out, and this pair to receive optical module be two receipts SDI SFP optical modules.
3. a multichannel optical fiber transmission network framework, is characterized in that, it comprises:
At least two the first single hole four road optical modules;
One optical coupler, this optical coupler has at least two inputs and an output, and each input of this optical coupler is connected with these the first single hole four road optical modules respectively respectively again;
One optical branching device, this optical branching device has an input and at least two outputs, is connected again between the input of this optical branching device and the output of optical coupler by a monomode fiber;
At least two the second single hole four road optical modules, respectively these the second single hole four road optical modules are connected with each output of this optical branching device respectively.
4. multichannel optical fiber transmission network framework as claimed in claim 3, wherein these the first single hole four road optical modules and the second single hole four road optical modules are single hole four road SDI optical modules.
5. multichannel optical fiber transmission network framework as claimed in claim 3, wherein these the first single hole four optical module one end, road are provided with an optical interface, and are provided with an optical secondary module in these the first single hole four road optical modules.
6. multichannel optical fiber transmission network framework as claimed in claim 5, wherein in this optical secondary module, comprise an optical fiber interface corresponding with this optical interface, one WDM filter, one the 2nd WDM filter, one the 3rd WDM filter and four optical transceiver cells, again in these four optical transceiver cells, one of them optical transceiver cell and this WDM filter, the 2nd WDM filter, before the 3rd WDM filter and optical fiber interface are sequentially, rear linearity is arranged, its excess-three optical transceiver cell lays respectively at this WDM filter, position on the light reflection path of the 2nd WDM filter and the 3rd WDM filter.
7. multichannel optical fiber transmission network framework as claimed in claim 3, wherein these the second single hole four optical module one end, road are provided with an optical interface, and are provided with an optical secondary module in these the second single hole four road optical modules.
8. multichannel optical fiber transmission network framework as claimed in claim 7, wherein in this optical secondary module, comprise an optical fiber interface corresponding with this optical interface, one WDM filter, one the 2nd WDM filter, one the 3rd WDM filter and four optical transceiver cells, again in these four optical transceiver cells, one of them optical transceiver cell and this WDM filter, the 2nd WDM filter, before the 3rd WDM filter and optical fiber interface are sequentially, rear linearity is arranged, its excess-three optical transceiver cell lays respectively at this WDM filter, position on the light reflection path of the 2nd WDM filter and the 3rd WDM filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420323262.7U CN203942607U (en) | 2014-06-17 | 2014-06-17 | A kind of multichannel optical fiber transmission network framework |
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| CN201420323262.7U CN203942607U (en) | 2014-06-17 | 2014-06-17 | A kind of multichannel optical fiber transmission network framework |
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| CN203942607U true CN203942607U (en) | 2014-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI640173B (en) * | 2017-04-28 | 2018-11-01 | 國立臺灣科技大學 | Optical communication system and method of multi-channel optical transmission and reception |
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2014
- 2014-06-17 CN CN201420323262.7U patent/CN203942607U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI640173B (en) * | 2017-04-28 | 2018-11-01 | 國立臺灣科技大學 | Optical communication system and method of multi-channel optical transmission and reception |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20170617 |