Parameters of 100M, Gigabit,and 10G optical transceiver

1.Parameters of 100M optical transceiver:

Center wavelength: There are three main types:

850nm (MM, multi-mode, low priced but short transmission distance, generally can only just transmit 500M);

1310nm (SM, single mode, huge loss during transmission but small dispersion, generally used for transmission within 40KM);

1550nm (SM, single-mode, low loss during transmission but large dispersion, generally used for long-distance transmission above 40KM, and may transmit 120KM directly without relay for the most part).

Transmission distance: Optical transceivers generally have got the next specifications: multi-mode 550m, single-mode 15km, 40km, 80km and 120km, etc.

Interface: 100M SFP optical transceivers are LC interfaces.

Laser type:

Optical transceivers with transmission distances within 40KM generally use FP lasers;
Optical transceivers with transmission distance ≥40KM generally use DFB lasers.
2.Parameters of Gigabit optical transceiver:

Central wavelength: The central wavelengths of the Gigabit optical transceiver are mainly 1310nm, 1470nm, 1550nm, 1330nm-TX/1270nm-RX. The optical transceiver with the central wavelength of 1550nm is normally a single-mode optical transceiver, and its own transmission distance can reach Above 40km.

Transmission distance: The transmission distance of the Gigabit optical transceiver ranges from 20km to 120km, and the transmission distance of most Gigabit optical transceivers is just about 100km.

Interface: Except that the interface of the GBIC Gigabit optical transceiver is SC duplex, the interfaces of the rest of the 10 Gigabit optical transceivers are all LC duplex.

Fiber type: 10 Gigabit optical transceivers are often used in combination with single-mode fiber, so its fiber type is SMF.

Laser type: The laser types of the Gigabit optical transceiver are mainly DFB 1550nm, DFB BiDi, DFB 1310nm, DFB CWDM, DFB DWDM.

DOM function: Aside from GBIC optical transceiver that will not support DOM function, other Gigabit optical transceivers support DOM function. It is because GBIC optical transceiver can be an early optical transceiver.

3.Parameters of 10 Gigabit optical transceiver:

Central wavelength: The central wavelengths of 10 Gigabit optical transceivers are 1470nm, 1550nm, 1590nm, 1330nm-TX/1270nm-RX, which 1330nm-TX/1270nm-RX are BiDi optical transceivers.

Transmission distance: The transmission distance of 10 Gigabit optical transceivers varies from 20 km to 80 km, however, the transmission distance of all 10 Gigabit optical transceivers is 80 km.

Interface: Except that the interface of XENPAK 10 Gigabit optical transceiver is usually SC duplex, the interface of the other 10 Gigabit optical transceivers are LC duplex.
Fiber type: The fiber kind of the 10 Gigabit optical transceiver is equivalent to the Gigabit optical transceiver, which is SMF.

Laser type: The laser types of the 10 Gigabit optical transceiver include EML 1550nm, DFB BiDi, EML CWDM, EML DWDM, and DFB CWDM. From the type of laser, we are able to derive its center wavelength or package type information.

DOM function: 10 Gigabit optical transceivers include DOM function. This function might help network administrators to monitor all areas of optical transceiver data in real-time. Network administrators may also check these data to make sure that the optical transceiver works normally.

In the application form, you should choose 100M optical transceiver, Gigabit optical transceiver or 10G optical transceiver , which mainly depends upon the kind of network adapted. For example, if your network is definitely 100M Ethernet, you should employ 100M optical transceiver, which can be Gigabit Ethernet. Gigabit optical transceivers are necessary for the network, and 10 Gigabit Ethernet transceivers are used for the 10 Gigabit Ethernet.

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