CN2859941Y

CN2859941Y - Multi-path parallel data information fiber transmission unit

Info

Publication number: CN2859941Y
Application number: CNU2006200281311U
Authority: CN
Inventors: 曹立华; 韩红霞; 耿爱辉
Original assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Current assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Priority date: 2006-01-12
Filing date: 2006-01-12
Publication date: 2007-01-17
Anticipated expiration: 2016-01-12

Abstract

A multi-path parallel data information fiber transmission unit which belongs to digital communication technique field, receives outside parallel multi-path low-speed data information by an information parallel-to-serial conversion module, converts the information into multi-path serial data information and transmits it to path-combining device, the path-combining device multiplexes the information to a path of serial data information capable of being transmitted via fibers according to different time. The path of serial data information transmitted via fibers is divided into multi-path serial data information by a path-dividing device, and the multi-path serial data information is reproduced to the primary multi-path parallel low-speed data by an information serial-to-parallel conversion module and then is outputted. The utility model applies a digital multiple connection technique in the fiber information transmission, so that the multi-path low-speed data information can be transmitted via a path of fiber, thereby developing cost is largely saved, band width for information transmission is increased, information transmission performance is improved and transmission efficiency is enhanced.

Description

Multidiameter delay data message fiber transmission device

Technical field

The utility model belongs to the digital communication technology field, relates to a kind of device that utilizes optical multiplex transmission parallel data information.

Background technology

At present, extensively adopt wavelength-division multiplex technique at optical fiber in as the technology of information transmitting medium, the information carrying means of employing wavelength-division multiplex technique as shown in Figure 1, comprise light emission module 1, wavelength division multiplexer 2, optical fiber 3, Wave decomposing multiplexer 4, Optical Receivers 5, the light signal output end of light emission module 1 is connected with wavelength division multiplexer 2; The light signal output end of wavelength division multiplexer 2 links to each other with an end of optical fiber 3, the signal that is separated from each other is modulated the light carrier of different wave length (or perhaps the frequency in optical frequency zone) respectively, optical channel of each Wavelength Assignment, and light converged to be input in the optical fiber 3 transmit, the other end of optical fiber 3 is connected with Wave decomposing multiplexer 4, Wave decomposing multiplexer 4 is connected with Optical Receivers 5, Wave decomposing multiplexer 4 comes out different wavelength separated, and the optical channel of each wavelength is introduced the original signal of recovery in the pairing Optical Receivers 5.Adopt wavelength division multiplexing/each corresponding wavelength of demultiplexing system of wavelength-division multiplex technique transmission information all will along with the increase of data message amount, must cause the raising of system cost with one road light emission module and Optical Receivers.

Summary of the invention

The utility model purpose provides a kind of multidiameter delay data message fiber transmission device, Digital Multiple Connection Technique is applied in the optical fiber message transmission, make the multi-path low speed data message to transmit by one road optical fiber, solved the increase that prior art exists, the problem that causes system cost to improve along with the message transmission bandwidth.

The utility model comprises frequency divider 6, clock generator 7, information parallel serial conversion module 8, mixer 9, light emission module 10, optical fiber 11, Optical Receivers 12, Clock Extraction unit 13, lock unit 14, splitter 15, bit string and modular converter 16.Frequency divider 6 input termination external clocks, output links to each other with clock generator 7 inputs; Clock generator 7 clock signal outputs link to each other with information parallel serial conversion module 8, mixer 9 clock signal inputs respectively; Information parallel serial conversion module 8 serial data outputs link to each other with mixer 9, mixer 9 signal output parts and light emission module 10, optical fiber 11, Optical Receivers 12 are linked in sequence, Optical Receivers 12 outputs link to each other with Clock Extraction unit 13, splitter 15 inputs respectively, Clock Extraction unit 13 outputs are connected with lock unit 14 inputs, lock unit 14 clock signal outputs link to each other with splitter 15, bit string and modular converter 16 clock signal inputs respectively, and splitter 15 serial signal outputs link to each other with the serial line interface of bit string and modular converter 16.

The course of work of the present utility model: frequency divider 6 receives external timing signal, produces fundamental frequency signal and offers clock generator 7, also offers both respectively by clock generator 7 generation information parallel serial conversion modules 8 and mixer 9 required clock signals; Information parallel serial conversion module 8 receives outside parallel duplex low speed data information, the sequential that provides of generator 7 is converted into the multi-path serial data information transfer to mixer 9 chronologically, and mixer 9 sequential that provides of generator 7 chronologically is multiplexed with one tunnel serial data with the multi-path serial data message.One tunnel serial data of mixer 9 outputs is converted to light signal through light emission module 10, and light signal transfers to Optical Receivers 12 through optical fiber 11.Optical Receivers 12 is converted to the signal of telecommunication with the light signal that receives, i.e. one tunnel serial data information; Clock Extraction unit 13 extracts fundamental frequency signal and gives lock unit 14 from this road serial data information, produce the required clock signal of splitters 15, bit string and modular converter 16 by lock unit 14, this clock signal is identical with information parallel serial conversion module 8 used sequential with the mixer 9 of clock generator 7 generations.The sequential that one tunnel serial data of Optical Receivers 12 output provides by lock unit 14 through splitter 15 resolves into the multi-path serial data message, and the multi-path serial data message is original multidiameter delay low speed data and output through the timing recovery that bit string and modular converter 16 provide by lock unit 14.

Beneficial effect: the utility model electricity consumption multiplex technique has replaced wavelength-division multiplex technique, make the multi-path low speed data message to transmit, saved development cost greatly, increased the bandwidth of message transmission by one road optical fiber, improve the transmission of Information performance, improved efficiency of transmission.

Description of drawings

Fig. 1 is the prior art structured flowchart.1 is light emission module among the figure, 2 wavelength division multiplexers, 3 optical fiber, 4 Wave decomposing multiplexers, 5 Optical Receivers.

Fig. 2 is the utility model structured flowchart, also is the specification digest accompanying drawing.6 is frequency divider among the figure, 7 clock generators, 8 information parallel serial conversion modules, 9 mixers, 10 light emission modules, 11 optical fiber, 12 Optical Receivers, 13 Clock Extraction unit, 14 lock units, 15 splitters, 16 bit strings and modular converter.

Embodiment

The utility model frequency divider 6, clock generator 7, information parallel serial conversion module 8, mixer 9, Clock Extraction unit 13, lock unit 14, splitter 15, bit string and modular converter 16 usefulness VHDL language are programmed on a slice scale programmable logic device chip and realize; It is EPM7128SLC84-10 that the scale programmable logic device chip adopts model.Light emission module 10 adopts NM3320, and optical fiber 11 adopts standard single-mode fiber, and Optical Receivers 12 adopts NM5320.

Claims

1, multidiameter delay data message fiber transmission device, comprise light emission module, optical fiber, Optical Receivers, it is characterized in that also comprising frequency divider (6), clock generator (7), information parallel serial conversion module (8), mixer (9), Clock Extraction unit (13), lock unit (14), splitter (15), bit string and modular converter (16); Frequency divider (6) input termination external clock, output links to each other with clock generator (7) input; Clock generator (7) clock signal output links to each other with information parallel serial conversion module (8), mixer (9) clock signal input respectively; Information parallel serial conversion module (8) serial data output links to each other with mixer (9), mixer (9) signal output part and light emission module (10), optical fiber (11), Optical Receivers (12) is linked in sequence, Optical Receivers (12) output respectively with Clock Extraction unit (13), splitter (15) input links to each other, Clock Extraction unit (13) output is connected with lock unit (14) input, lock unit (14) clock signal output respectively with splitter (15), bit string and modular converter (16) clock signal input links to each other, and splitter (15) serial signal output links to each other with the serial line interface of bit string and modular converter (16).

2, multidiameter delay data message fiber transmission device according to claim 1 is characterized in that frequency divider (6), clock generator (7), information parallel serial conversion module (8), mixer (9), Clock Extraction unit (13), lock unit (14), splitter (15), bit string and modular converter (16) are programmed on a slice scale programmable logic device chip with VHDL language to realize; It is EPM7128SLC84-10 that the scale programmable logic device chip adopts model, and light emission module (10) adopts NM3320, and optical fiber (11) adopts standard single-mode fiber, and Optical Receivers 12 adopts NM5320.