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[China]
Address: B-1906,Zhantao-Tech mansion ,Minzhi road 1079,longhua Dis,shenzhen 518110 China
Contact name:Leo yang
Uonel Co.Limtied |
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The COA integrates the optical amplifier module, the driving circuit, and the communication circuit in an aluminium case.
The COA is an external and independent amplifier and does not occupy a slot in the subrack. The COA can work independently. The equipment supports a maximum of two 61COAs, two N1COAs, or one 62COA.
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.
| Function and Feature | 61COA/N1COA |
|---|---|
| Power amplification function | The 61COA increases the launched optical power of the line board. As a result, the valid transmission distance of optical signals is extended. |
| Pre-amplification function | The 61COA/N1COA provides the pre-amplification function. |
| ALS function | Supports the ALS function. |
| Communication through serial ports | Communicates with the GSCC through the RS-232 serial port, reports the alarms and performance events of the COA to the NMS, and receives the configuration commands issued by the NMS. |
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.
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.
| Function and Feature | 62COA |
|---|---|
| Basic functions | Is configured at the receive end of the SDH system, and realizes extra long-haul transmission (more than 170 km) when working with an EDFA whose output power is 17 dBm at the transmit end. |
| Pre-amplification function | The 62COA provides the pre-amplification function. |
| ALS function | Supports the ALS function. |
| Communication through serial ports | Communicates with the GSCC through the RS-232 serial port, reports the alarms and performance events of the COA to the NMS, and receives the configuration commands issued by the NMS. |
The number code that follows the board name in the bar code is the feature code of the board. The feature code of the 61COA indicates the output optical power of the optical interfaces.
Table 1 provides the relationship between the feature code of the 61COA and the output optical power.
| Board | Feature Code | Description |
|---|---|---|
| SS61COA01 | 01 | The output optical power of the BA module is 14 dBm. |
| SS61COA02 | 02 | The output optical power of the BA module is 17 dBm. |
The technical specifications of the COA include the parameters specified for optical interfaces, laser safety class, mechanical specifications, and power consumption.
Table 1 lists the parameters specified for the optical interfaces of the COA.
| Parameter | Value | ||
|---|---|---|---|
| 61COA | N1COA | 62COA | |
| Operating wavelength range (nm) | BA: 1530 to 1565 PA: 1550.12 | PA: 1550.12 | 1550.12 |
| Input optical power range (dBm) | BA: -6 to +3 PA: -28 to -10 (when the BPA works with the line board at the rate of 10 Gbit/s) PA: -38 to -10 (when the BPA works with the line board at the rate less than 10 Gbit/s) | PA: -28 to -10 (when the BPA works with the line board at the rate of 10 Gbit/s) PA: -38 to -10 (when the BPA works with the line board at the rate less than 10 Gbit/s) | -43 to -20 (The LOS alarm is reported when the input optical power reaches -45 dBm.) |
| Launched optical power range (dBm) | BA: 14 to 14.5 or 17 to 17.5 PA: -2 to +16 (when the BPA works with the line board at the rate of 10 Gbit/s) PA: -12 to +16 (when the BPA works with the line board at the rate less than 10 Gbit/s) | PA: -2 to +16 (when the BPA works with the line board at the rate of 10 Gbit/s) PA: -12 to +16 (when the BPA works with the line board at the rate less than 10 Gbit/s) | - |
| Signal gain (dB) | PA: > 22 | > 22 | 13 |
| Noise figure (dB) | < 6 | < -1.5 | |
The safety class of the laser on the board is Class 1M. The maximum launched optical power of the optical interfaces is within the range from 10 dBm (10 mW) to 22.15 dBm (164 mW).
The mechanical specifications of the 61COA and N1COA are as follows:
The mechanical specifications of the 62COA are as follows:
The maximum power consumption of the 61COA at room temperature (25°C) is 10 W.
The maximum power consumption of the 62COA at room temperature (25°C) is 75 W.
The maximum power consumption of the N1COA at room temperature (25°C) is 10 W.
Cargo will be delivered within 1 day after payment arrived. Tracking Number will be offered once delivery done.
| Delivery Options | Estimated Delivery Time |
|---|---|
 DHL | 3-5 business days |
 Fedex | 3-5 business days |
 By Sea | 10-20 business days |
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:
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