61COA and N1COA

The 61COA/N1COA is equipped with only one EDFA optical module. The 61COA/N1COA can work as a power amplifier, a pre-amplifier, or a line amplifier.

The optical characteristics of the 61COA/N1COA are the same as the optical characteristics of the optical amplifier boards such as the BPA and BA2. The difference between the 61COA/N1COA and the optical amplifier boards is that the 61COA/N1COA is an external optical amplifier unit, which does not occupy a slot in the subrack. The 61COA/N1COA can be directly installed in the ETSI cabinet but requires separate power supply.

The application of the 61COA/N1COA in the optical transmission system is the same as the application of the BA2 and BPA in the optical transmission system. Table 1 provides the functions and features of the 61COA/N1COA.

62COA

The 62COA is a case-shaped Raman optical amplifier and is used at the receive end of the SDH equipment.

The 62COA transmits counter-propagated pumping optical signals to fibers for distributed Raman amplification. The gain medium of distributed Raman amplification is the line fiber that can reduce noise. This is different from the 61COA. Hence, the 62COA can extend the transmission distance, increase the signal-to-noise ratio, and realize ultra long hop transmission for a single span.

The 62COA is a case-shaped Raman optical amplifier and is used at the receive end of the optical transmission system. The optical signals are amplified during transmission based on the stimulated Raman scattering effect of the fiber. The 62COA needs to work with the EDFA to realize the transmission of optical signals for more than 170 km. For details, see Figure 1.

Figure 1 Application of the 62COA

The Raman amplifier amplifies optical signals during transmission by transmitting counter-propagated pumping optical signals to fibers for distributed Raman amplification. As a result, the phase of optical signals is significantly different from the phase of pump signals. The power fluctuation of the Raman pumping is offset in the counter-propagation. Hence, the noise caused by the pump can be effectively suppressed.

Table 2 provides the functions and features of the 62COA.

The technical specifications of the COA include the parameters specified for optical interfaces, laser safety class, mechanical specifications, and power consumption.

Notice:

Above mentioned information are just for your reference only,we will keep you posted for the tracking delivery schedule.There are two delivery options available for by air and by sea:

Deliver to port:

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responsibility of the buyer. Uonel will recommend trustworthy local freight forwarders to you.Uonel can facilitate the progress under buyer's permission and at buyer's expense.

Deliver to door:

Uonel will quote all destination charge prior once we have confirmed order.
Uonel is responsible for transporting goods to door after you have made the payment.

Standard Hardware Warranty Policy:

Original new sealed product: 1 Year

The Support Contacts:

If your products failed, you must contact your sales representative to verify product failure. If the problem still can't correct by remote support methods i.e. email or phone support, the RMA procedure will issue.