CN2667804Y

CN2667804Y - Optica fibre Ethernet card

Info

Publication number: CN2667804Y
Application number: CNU2003201151487U
Authority: CN
Inventors: 汪立全; 黎中华; 陈静; 黄河振
Original assignee: SHENZHEN SHOUMAI COMMUNICATION TECHNOLOGY Co Ltd
Current assignee: SHENZHEN SHOUMAI COMMUNICATION TECHNOLOGY Co Ltd
Priority date: 2003-11-25
Filing date: 2003-11-25
Publication date: 2004-12-29
Anticipated expiration: 2013-11-25

Abstract

The utility model discloses an optical fiber Ethernet network card which comprises a connector controlling module and an optical fiber transceiver; the optical fiber transceiver adopts the single fiber and wavelength double direction transceiver. As the fiber adopts the single fiber and wavelength double direction transceiver, the single fiber repeatedly uses an upward optical signal and a downward optical signal with the same wavelength to finish the double direction data transmission and save line resource, and save the usable fiber frequency resource; as the easier semitransparent and glistening filming art adopted by the single wavelength double direction optical transceiver realizes repeated use of the signal of the upward and downward signals with the same wavelength, the cost of the utility model is reduced; as using the single wavelength, the transceivers on both ends need not to be used together; the utility model has a good product exchange capability and is convenient to be arranged, therefore the utility model is very convenient.

Description

The fiber optic Ethernet card

[technical field]:

The utility model relates to a kind of fiber optic Ethernet card.

[background technology]:

At present, the fiber optic Ethernet card that exists of market all is made up of the single wavelength of two fibres or single fiber dual-wavelength optical-fiber transceiver (Optical Transceiver), pci interface and medium access control preparative layer control chip (MAC), physical chip (PHY).MAC is responsible for the access control of control of PCI logic interfacing and Ethernet data, and PHY is connected with MAC by media independent interface (MII) interface, drives fiber optical transceiver and finishes transfer of data.Adopting the Ethernet card of two fine transceivers is as transmission channel with a pair of optical fiber, the light signal of an Optical Fiber Transmission upstream data wherein, the light signal of another root Optical Fiber Transmission downlink data, thereby can finish the full duplex transmission function, fiber resource and wiring space have been wasted in the use of this pair of optical fiber undoubtedly, and generally adopting multimode fiber, generally in 1KM, transmission range is shorter for the transmission range of the fine duplex of its pair; The connection of two fine bidirectional optical fiber Ethernet cards as shown in Figure 1, the structure chart of its transceiver is as shown in Figure 2.And the Ethernet card transmission range of employing single fiber dual-wavelength optical-fiber transceiver can be far away, but because optical wavelength-division multiplex (WDM) technology adopts the film filtering technique in the optical transceiver, its processing cost height, cause the cost of whole Ethernet card higher, in addition owing to adopt the transmission of single fiber dual wavelength, the optical transceiver that connects optical fiber two ends network interface card must carry out the wavelength pairing, require supporting use, this defective is made troubles to the user undoubtedly, it installs trouble, and product interchangeability is poor, popularizes difficulty, the connection of single fiber dual wavelength bidirectional optical fiber Ethernet card as shown in Figure 3, the structure chart of its transceiver is as shown in Figure 4.

[summary of the invention]:

The utility model is the deficiency that overcomes the fiber optic Ethernet card of prior art, provides a kind of and can avoid the line resource waste, can reduce hardware cost again, and fiber optic Ethernet card easy to use.

The utility model provides a kind of fiber optic Ethernet card for this reason, comprises interface control module, fiber optical transceiver, and the two is connected, and described fiber optical transceiver adopts single fiber list wavelength bidirectional optical fiber transceiver.

Owing to take technique scheme, the up-downgoing light signal of multiplexing same wavelength is finished bidirectional data transfers in simple optical fiber, has saved line resource; And because use single wavelength, can also add other wavelength easily in future and in same optical fiber, transmit other signals, saved available optical fiber frequency spectrum resource simultaneously; Because the simpler semi-transparent semi-reflecting optical coating technology that adopts single wavelength bidirectional optical transceiver realizes multiplexing to the up-downgoing light signal of same wavelength as shown in Figure 5, making device cost reduce; Owing to use the cause of single wavelength, the transceiver at two ends need not pairing and uses, and product interchangeability is good, installs simple, therefore easy to use.

[description of drawings]:

Fig. 1 is the system's connection diagram that adopts two fine bidirectional optical fiber Ethernet cards;

Fig. 2 is two fine bi-directional transceiver structural representations;

Fig. 3 is the system's connection diagram that adopts single fiber dual wavelength bidirectional optical fiber Ethernet card;

Fig. 4 is a single fiber dual wavelength bidirectional optical fiber transceiver configuration schematic diagram;

Fig. 5 is a single fiber list wavelength bidirectional optical fiber transceiver configuration schematic diagram;

Fig. 6 is the utility model structured flowchart;

Fig. 7 is the utility model example structure schematic diagram.

[embodiment]:

For further specifying the technical solution of the utility model, elaborate below in conjunction with accompanying drawing:

As shown in Figure 6, fiber optic Ethernet card of the present utility model comprises interface control module, single fiber list wavelength bidirectional optical fiber transceiver, non-disk startup program storage.

As shown in Figure 7, an embodiment as this device, the pci interface of integrated mpsi layer and the integrated circuit (IC) chip of medium access control preparative layer controlled function in single fiber list wavelength bidirectional optical fiber Ethernet card, have been adopted, the VT6105 or the VT6105M of VIA company have been used in the present embodiment, it is the PT8362-33-1-SC/APC of 1310nm that single fiber list wavelength bidirectional optical fiber transceiver has been selected the wavelength of Shenzhen Photon photoelectricity company for use, single fiber list wavelength bidirectional optical fiber transceiver is by the differential driving mode, its reception directly is connected with MAC chip VT6105 or VT6105M with the transmission signal, finishes the transfer function of the ether signal of telecommunication on optical fiber.VT6105 wherein or VT6105M finish optical-electric module drives, the optical fiber received signal detects interface, the control of PCI logic interfacing, the 10/100Mbps Ethernet access control of standard, the access of EEPROM, the functions such as access of non-disk startup program storage.EEPROM adopts the AT93C46 chip, and memory adopts the SST29LE020 chip, and EEPROM is used to deposit identification datas such as the MAC Address, manufacturer of Ethernet card; The non-disk startup program storage is used to deposit start-up routine, supports fiber optic Ethernet to be stuck in the non-disk startup of diskless computer or digital system.Power supply adopts the MC5209BM Voltage stabilizing module.

Claims

1, a kind of fiber optic Ethernet card comprises interface control module, fiber optical transceiver, and the two is connected, and it is characterized in that: described fiber optical transceiver is a single fiber list wavelength bidirectional optical fiber transceiver.