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Huawei OSN3500 SS61COA single board has three functional versions: SS61, SS62, and SSN1. 61COA and N1COA adopt EDFA optical amplifier module, while 62COA adopts Raman optical amplifier module, 61COA supports optical power amplification and preamplification, and N1COA and 62COA support preamplification. 61COA is a box-type external fiber amplifier, which does not occupy a subrack slot and mainly performs the optical signal amplification function. SS61COA is a box-type external fiber amplifier, which does not occupy the subrack slot, mainly completes the optical signal amplification function, and is suitable for long-distance fiber transmission.
Huawei OSN3500 SS61COATechnical Specifications
The COA single-board specifications include optical interface specifications, laser safety level, mechanical specifications, and power consumption.
Huawei OSN3500 SS61COAoptical interface indicators
The optical interface indicators of the COA single board are shown in Table 1.
| Item | Indicator Value | ||
|---|---|---|---|
| Optix 2500 SS61COA | Huawei OSN3500 SSN1COA | Huawei Metro 3000 SS62COA | |
| Signal operating wavelength (nm) |
BA: 1530～1565 PA: 1550.12 |
PA: 1550.12 |
1550.12 |
| Input optical power range (dBm) |
BA: -6 to +3 PA: -28 to -10 (working with 10G line veneer) PA: -38 to -10 (working with line veneer below 10G) |
PA: -28 to -10 (working with 10G line veneer) PA: -38 to -10 (working with line veneers up to 10G) |
-43～-20 (where -45dbm is its reported LOS point) |
| Output optical power (dBm) |
BA: +14 to +14.5 or +17 to +17.5 PA: -2～+16 (working with 10G line veneer) PA: -12 to +16 (working with line veneer below 10G) |
PA: -2 to +16 (working with 10G line veneer) PA: -12 to +16 (working with line veneers up to 10G) |
- |
| Signal gain (dB) | PA: >22 | PA: >22 | 13 |
| Noise Index (dB) | <6 | <-1.5 | |
Huawei OSN3500 SS61COA Single Board Characterization Code
The single-board characteristic code is the code located after the single-board name in the single-board bar code.61 The single-board characteristic code of the COA is used to describe the output optical power of the optical interface.
The relationship between the 61COA single-board characterization code and the output optical power is shown in Table 1.
| Veneer | Characterization Code | Description |
|---|---|---|
| SS61COA01 | 01 | BA module output optical power: 14dBm |
| SS61COA02 | 02 | BA module output optical power: 17dBm |
Huawei OSN3500 SS61COA Functions and Features
COA is a box-type fiber amplifier, which is an optical amplification module and its driving circuit and communication circuit, etc., in an aluminum box.COA is an external stand-alone amplifier, which does not occupy the subrack board space and can work independently.61COA, N1COA, and 62COA are configured in the device in the maximum number of 2, 2, and 1, respectively.
Huawei SS61COA and SSN1COA
The SS61COA and SSN1COA are erbium-doped fiber amplifiers configured with only one EDFA optical module, which can be used as power amplifiers, preamplifiers, or line amplifiers.
SS61COA is identical to BPA, BA2 and other optical amplifier veneers in terms of optical characteristics. The main difference is that 61COA and N1COA are external optical amplification units, which do not take up subrack board space, and can be installed directly in ETSI cabinets, which need to be powered separately.
SS61COA and SSN1COA are used in the same way as BA2 and BPA single boards in the optical transmission system. Their specific functions and characteristics are shown in Table 1.
| Function and Characteristics | Functions and Characteristics |
|---|---|
| Optical power amplification function | The 61COA can increase the transmitted optical power of the circuit board to improve the effective transmission distance of optical signals. |
| Pre-amplification Function | The 61COA/N1COA provides a pre-amplification function. |
| Laser Auto Shutdown | Supports laser auto shutdown function. |
| Serial communication function | Communicate with GSCC board through RS232 serial port to report COA alarms and performance events to the network manager and receive setting commands from the network manager. |
The Huawei SS62COA is a boxed Raman fiber amplifier, which is used at the receiving end of SDH equipment.
The 62COA achieves distributed Raman optical amplification by injecting pump light into the transmission fiber through reverse pumping. Unlike the 61COA, the distributed Raman amplification gain medium is line fiber, which provides better noise performance. Therefore, the use of 62COA can increase the transmission distance and reduce the optical signal-to-noise ratio, thus realizing single-segment ultra-long span transmission.
62COA is a Raman fiber amplification unit, used in the receiving end of the optical transmission system, using the optical fiber's excited Raman scattering effect so that the optical signal can be amplified in the transmission process. 62COA needs to be used with the EDFA optical amplifier, together to complete the 170km distance of more than 170km of optical signal transmission, as shown in Figure 1.
Raman amplifiers use distributed amplification with reverse pumping to amplify the optical signal during transmission. This reverse pumping method makes the phase difference between signal light and pump light larger, Raman pump power fluctuations will be averaged out in the reverse transmission, the noise generated by the pump can be effectively suppressed.
The specific functions and characteristics of the 62COA single board are shown in Table 2.
| Functions and Characteristics | Description |
|---|---|
| Basic Functions | Configured at the receiving end of the SDH system, the transmitter cooperates with the EDFA optical amplifier with an output power of 17dBm to complete the ultra-long-distance optical signal transmission of more than 170km. |
| Pre-amplification Function | Provides pre-amplification function. |
| Automatic laser shutdown | Supports the laser auto shut-off function. |
| Serial communication function | Communicate with GSCC board through RS232 serial port to report COA alarms and performance events to the network manager and receive setting commands from the network manager. |
Huawei OSN3500 SS61COA Technical Specifications
The single-board laser safety level is CLASS 1M, and the maximum output optical power of the single-board optical port is between 10dBm (10mW) and 22.15dBm (164mW).
Huawei OSN3500 SS61COA Mechanical Specifications
The mechanical specifications of the 61COA and N1COA single boards are as follows:
- Veneer size: 240mm (W) x 190mm (D) x 50mm (H)
- Weight: 3.5kg
The mechanical indicators for the 62COA veneer are as follows:
- Veneer size: 294mm (W) x 436mm (D) x 86mm (H)
- Weight: 8.0kg
Power consumption
61COA veneer has a maximum power consumption of 10W at room temperature (25°C).
62COA veneer has a maximum power consumption of 75W at room temperature (25°C).
N1COA veneer has a maximum power consumption of 10W at room temperature (25°C).
