CN100353197C - Wavelength converter for 650nm plastic optical fiber transmission system - Google Patents
Wavelength converter for 650nm plastic optical fiber transmission system Download PDFInfo
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- CN100353197C CN100353197C CNB200510123124XA CN200510123124A CN100353197C CN 100353197 C CN100353197 C CN 100353197C CN B200510123124X A CNB200510123124X A CN B200510123124XA CN 200510123124 A CN200510123124 A CN 200510123124A CN 100353197 C CN100353197 C CN 100353197C
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Abstract
The present invention relates to a wavelength converter of 650 nm plastic optical fiber transmission systems, which relates to a user terminal device of optical networks. The present invention comprises a power supply circuit supplied to the whole system, a V25806 silica optical fiber interface control circuit, a TODX2402 plastic optical fiber interface control circuit, two medium conversion control chips DM9331A and a crystal oscillation circuit, wherein the crystal oscillation circuit is connected to the power supply circuit and is respectively connected with the two medium converting control chips DM9331A which are mutually connected; each medium converting control chip DM9331A is respectively connected with the V25806 silica optical fiber interface control circuit and the TODX2402 plastic optical fiber interface control circuit. The present invention can respectively convert 1550 nm, 1310 nm and 850 nm silica optical fiber signals into 650 nm plastic optical fiber signals and can be used for connecting plastic optical fiber networks and silica optical fiber networks on main roads for causing plastic optical fiber systems and public information networks to be intercommunicated for carrying out omnidistance whole network optical intercommunication, and full light networks become probable.
Description
Technical field
The present invention relates to a kind of network equipment, especially a kind of subscriber terminal equipment of optical-fiber network, " last kilometer " subscriber terminal equipment that just is commonly called as usually.
Background technology
The silica fibre network information on the existing backbone must be through light/electricity, electricity/light conversion when access user terminal, and this changing turns over journey and not only influence transmission speed, and causes signal attenuation, information distortion, is subject to external interference, and the information that also is prone to is stolen.
In order to change the above-mentioned defective in the existing information transmission, a kind of all-optical network just under study for action, all-optical network becomes the first-selection of (hypervelocity) broadband network at a high speed of future generation with its good transparency, wavelength routing characteristic, compatibility and extensibility.In order to reach at user terminal, promptly last kilometer must convert existing 1550nm, 1310nm, 850nm silica fibre signal to 650nm plastic optical fiber signal respectively still with light transmission information, could further be transformed into user terminal then.
Summary of the invention
The object of the invention is exactly the wavelength shifter of a kind of 650nm plastic optical fiber transmission system that existing 1550nm, 1310nm, 850nm silica fibre signal and 650nm plastic optical fiber signal can be changed each other of design.
The present invention includes by the power circuit of supplying with total system, the silica fibre interface control circuit that comprises V23806, the plastic optical fiber interface control circuit that comprises TODX2402, two medium conversion and control chip DM9331A, crystal oscillating circuit; Crystal oscillating circuit is connected on the power circuit, crystal oscillating circuit is connected with two medium conversion and control chip DM9331A respectively again, the RXDV of two medium conversion and control chip DM9331A end and TXEN end intersects mutual connection, RXD holds with TXD holds and intersect mutual connection, each medium conversion and control chip DM9331A is connected with silica fibre interface control circuit, plastic optical fiber interface control circuit respectively.
Crystal oscillating circuit of the present invention provides the clock source for the medium conversion chip, medium conversion and control chip DM9331A is a low-power consumption, high performance CMOS chip, it has the whole physical layer function that meet the IEEE802.3u standard, mainly comprise Physical Coding Sublayer (PCS), the PECL compatibility interface that is used for optic module, can select full-duplex/half-duplex mode of operation etc. automatically, realize of the conversion of different wave length light signal to the 650nm light signal, both can provide and the direct interface of twisted-pair feeder (category-5 cable) cable, also can connect outside fiber optical transceiver by the PECL interface at the 100Base-TX Fast Ethernet.Existing 1550nm, 1310nm, 850nm silica fibre signal and 650nm plastic optical fiber signal can be changed each other.
Principle of work of the present invention is as follows:
(1) holds the initial operation mode that DM9331A is set by OP2, OP1, OP0.When being arranged to 010, but system just is operated under artificial selection " 100FX full duplex " pattern; When being arranged to 001, but system with regard to last work under " 100FX half-duplex " pattern of artificial selection; In this change-over circuit, chip is configured to " 100FX full duplex " pattern
(2) pass through the two-way flow that MCI (medium control interface) realizes data.Chip carries out sending and receiving data (RXD, TXD) under the synchronous coordination of 50MHz crystal oscillator, and receives/send out the 2bits data message in each clock period of TXEN valid period.Equally also be once to transmit the 2bits data between two chips.
(3) TXEN of one of them DM9331A comes from the RXDV signal end of another DM9331A, the data mode on the physical medium that the medium control interface is transmitting.
(4) medium independent interface register (Media Independent Interface Register) group is write default various states (0 or 1), reset mode, near-end loopback test, transmission speed, automatic negotiation to the wavelength shifter system enable, restart various parameters such as automatic negotiation, full duplex and make concrete setting, for the bit position that does not have specific (special) requirements, generally can adopt default value.
(5) two DM9331A also can deliver to real-time working state of system (list/duplex, data transmission, medium connect, make mistakes etc.) in the display driver circuit in the process of data communication, intuitively show by LED at last.
The present invention can change plastic optical fiber light signal (650nm) and silica fibre light signal (850nm, 1310nm or 1550nm).Plastic optical fiber network can be connected with silica fibre network on the backbone by optical transponder unit, constitute all-optical network.Be used all optical network other products such as plastic optical fiber (POF) 650nm optical switch, form all-optical network, can be the office automation of office of army, research institute, military universities and colleges etc., high-speed data exchange network for naval vessels, be local government department, medium-sized and small enterprises, education sector etc., provide Fast Ethernet to connect.
Two medium conversion and control chip DM9331A of the present invention also connect led drive circuit respectively.
Crystal oscillating circuit of the present invention is connected DC/DC converter+3.3V output terminal, the AC/DC power supply changeover device is connected on outward on the 220V alternating current, 220 alternating currents are transformed into+output of 5V direct current by the AC/DC power supply changeover device, its output terminal is connected the input end of DC/DC converter, and the DC/DC converter also is connected with two medium conversion and control chip DM9331A respectively.
Description of drawings
Fig. 1 is a formation block diagram of the present invention;
Fig. 2 is one of circuit theory diagrams of the present invention;
Fig. 3 is two of circuit theory diagrams of the present invention;
Fig. 4 is three of circuit theory diagrams of the present invention;
Fig. 5 is four of circuit theory diagrams of the present invention;
Fig. 6 is five of circuit theory diagrams of the present invention.
Specific embodiment
As shown in Figure 1, the present invention includes by the power circuit of supplying with total system, V23806 silica fibre interface control circuit, TODX2402 plastic optical fiber interface control circuit, two medium conversion and control chip DM9331A, crystal oscillating circuit; Crystal oscillating circuit is connected on the power circuit, crystal oscillating circuit is connected with two medium conversion and control chip DM9331A respectively again, two medium conversion and control chip DM9331A interconnect, each medium conversion and control chip DM9331A respectively with V23806 silica fibre interface control circuit, TODX2402 plastic optical fiber interface circuit control linkage.Two medium conversion and control chip DM9331A also connect led drive circuit respectively.
Crystal oscillating circuit is connected DC/DC converter+3.3V output terminal, the AC/DC power supply changeover device is connected on outward on the 220V alternating current, 220 alternating currents are transformed into+output of 5V direct current by the AC/DC power supply changeover device, its output terminal is connected the input end of DC/DC converter, and the DC/DC converter also is connected with two medium conversion and control chip DM9331A respectively.
The plastic optical fiber interface control circuit comprises medium conversion and control chip DM9331A N4, the optical module feed circuit, half full duplex change-over circuit, indicator light circuit, the plastic optical fiber interface circuit that are connected with medium conversion and control chip DM9331AN4.The plastic optical fiber interface circuit serves as main the composition with the optical fiber transceiver module TODX2402 of TOSHIBA company, constitute 8 data I/O passages on the switch Physical layer, bi-directional data is connected to the RX+/FXRD+ of medium conversion chip DM9331A, RX-/FXRD, TX+/FXTD+,, TX-/FXTD-, on 4 I/O pin, the independent transmitting-receiving exchange that realizes light signal under the control of FXSD1 signal.
When the magnitude of voltage of the optical signal detecting pin FXSD18 of light exchange chip during greater than 0.6V, this port working is in the 100BaseFX pattern, and when 0.6V＜VFXSDn＜1.25V, FXSDn is a low level, and light signal connects indication " extinguishing "; When VFXSDn＞1.25V, FXSDn is a high level, and light signal connects indication " lighting ".
The silica fibre interface control circuit comprises medium conversion and control chip DM9331A N2, the voltage conversion circuit, half full duplex change-over circuit, indicator light circuit, the silica fibre interface circuit that are connected with medium conversion and control chip DM9331A N2.
The dynamic behavior of two working station indicator display light wavelength shifters, for example data transmission, error situation etc.
DIAG_STO-diagnostic state output, as DIAG_ACT=1 and when being in the FX mode, DIAG_STO=1 represents the light successful connection;=0 represents the optical fiber connection failure.Be used for automatic loopback test.
FX_LINK/ACT-connects or movable pilot lamp.
Under the FX_FAULTLED-FX pattern, the indexed optical fiber signal error.
The signaling interface of optical fiber transceiver module TODX2402 and medium conversion chip DM9331A is 3.3 volts of PECL interfaces.
Claims (3)
1, the wavelength shifter of 650nm plastic optical fiber transmission system is characterized in that comprising by the power circuit of supplying with total system, the silica fibre interface control circuit that comprises V23806, the plastic optical fiber interface control circuit that comprises TODX2402, two medium conversion and control chip DM9331A, crystal oscillating circuit; Crystal oscillating circuit is connected on the power circuit, crystal oscillating circuit is connected with two medium conversion and control chip DM9331A respectively again, the RXDV of two medium conversion and control chip DM9331A end and TXEN end intersects mutual connection, RXD holds with TXD holds and intersect mutual connection, each medium conversion and control chip DM9331A is connected with silica fibre interface control circuit, plastic optical fiber interface control circuit respectively.
2,, it is characterized in that two medium conversion and control chip DM9331A also connect led drive circuit respectively according to the wavelength shifter of the described 650nm plastic optical fiber of claim 1 transmission system.
3, according to the wavelength shifter of the described 650nm plastic optical fiber of claim 1 transmission system, it is characterized in that crystal oscillating circuit be connected the DC/DC converter+the 3.3V output terminal, the AC/DC power supply changeover device is connected on outward on the 220V alternating current, the 220V alternating current is transformed into+output of 5V direct current by the AC/DC power supply changeover device, its output terminal is connected the input end of DC/DC converter, and the DC/DC converter also is connected with two medium conversion and control chip DM9331A respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510123124XA CN100353197C (en) | 2005-12-16 | 2005-12-16 | Wavelength converter for 650nm plastic optical fiber transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510123124XA CN100353197C (en) | 2005-12-16 | 2005-12-16 | Wavelength converter for 650nm plastic optical fiber transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1790075A CN1790075A (en) | 2006-06-21 |
| CN100353197C true CN100353197C (en) | 2007-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510123124XA Expired - Fee Related CN100353197C (en) | 2005-12-16 | 2005-12-16 | Wavelength converter for 650nm plastic optical fiber transmission system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001141952A (en) * | 1999-11-11 | 2001-05-25 | Nippon Telegr & Teleph Corp <Ntt> | Multiplexed wavelength batch-converting device |
| CN1503497A (en) * | 2002-11-22 | 2004-06-09 | 三星电子株式会社 | Wavelength converter and optical cross-connect system using the same |
| CN2850145Y (en) * | 2005-12-16 | 2006-12-20 | 江苏华山光电有限公司 | Wavelength converter for 650nm plastic optical fiber transmission system |
-
2005
- 2005-12-16 CN CNB200510123124XA patent/CN100353197C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001141952A (en) * | 1999-11-11 | 2001-05-25 | Nippon Telegr & Teleph Corp <Ntt> | Multiplexed wavelength batch-converting device |
| CN1503497A (en) * | 2002-11-22 | 2004-06-09 | 三星电子株式会社 | Wavelength converter and optical cross-connect system using the same |
| CN2850145Y (en) * | 2005-12-16 | 2006-12-20 | 江苏华山光电有限公司 | Wavelength converter for 650nm plastic optical fiber transmission system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1790075A (en) | 2006-06-21 |
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