The technical specifications of the LWX include the parameters
specified for optical interfaces, the safety class of the laser,
mechanical specifications and power consumption.
Parameters Specified for Optical Interfaces
Table 1 and Table 2 list the parameters specified for the
client-side and WDM-side optical interfaces of the LWX.
Table 1 Parameters specified for the client-side optical interfaces of the
LWX
| Parameter | Value |
|---|
| Nominal bit rate | 10 Mbit/s to 2.7 Gbit/s |
| Line code pattern | NRZ |
| Type of fiber | Single-mode LC | Single-mode LC | Single-mode LC |
| Transmission distance (km) | 15 | 40 | 80 |
| Characteristics of the transmitter at point S |
| Operating wavelength range (nm) | 1260 to 1360 | 1260 to 1360 | 1500 to 1580 |
| Maximum mean launched power (dBm) | 0 | +3 | +3 |
| Minimum mean launched power (dBm) | -5 | -2 | -2 |
| Minimum extinction ratio (dB) | +8.2 | +8.2 | +8.2 |
| Minimum side mode suppression ratio (dB) | 30 | 30 | 30 |
| Eye pattern mask | Complies with the mask defined in ITU-T G.957. | Complies with the mask defined in ITU-T G.957. | Complies with the mask defined in ITU-T G.957. |
| Characteristics of the receiver at point S |
| Receiver type | PIN | APD | APD |
| Receiver wavelength range (nm) | 1200 to 1600 | 1200 to 1600 | 1200 to 1600 |
| Receiver sensitivity (dBm) | -18 | -27 | -28 |
| Minimum overload (dBm) | 0 | -9 | -9 |
| Maximum reflectance (dB) | -27 | -27 | -27 |
Table 2 Parameters specified for the WDM-side optical interfaces of the
LWX
| Parameter | Value |
|---|
| Channel spacing (GHz) | 100 |
| Line code pattern | NRZ |
| Characteristics of the transmitter at point Sn |
| Transmission distance (km) | 640 | 170 (2 mW) | 170 (10 mW) | 360 |
| Maximum mean launched power (dBm) | +3 | +3 | +7 | +3 |
| Minimum mean launched power (dBm) | -2 | -2 | 5 | -2 |
| Minimum extinction ratio (dB) | +10 | +10 | +10 | +10 |
| Nominal central frequency (THz) | 192.10 to 196.00 | 192.10 to 196.00 | 192.10 to 196.00 | 192.10 to 196.00 |
| Central frequency deviation (GHz) | ±12.5 | ±12.5 | ±12.5 | ±12.5 |
| Maximum -20 dB spectral width (nm) | 0.2 | 0.4 | 0.4 | 0.4 |
| Minimum side mode suppression ratio (dB) | 35 | 35 | 35 | 35 |
| Dispersion compensation (ps/nm) | 12800 | 3400 | 3400 | 7200 |
| Eye pattern mask | Complies with the mask defined in ITU-T G.957. | Complies with the mask defined in ITU-T G.957. | Complies with the mask defined in ITU-T G.957. | Complies with the mask defined in ITU-T G.957. |
| Characteristics of the receiver at point Rn |
| Receiver type | APD | PIN |
| Receiver wavelength range (nm) | 1200 to 1600 | 1200 to 1600 |
| Receiver sensitivity (dBm) | -28 | -18 |
| Minimum overload (dBm) | -9 | 0 |
| Maximum reflectance (dB) | -27 | -27 |
Laser Safety Class
The safety class of the laser on the board is Class 1. The maximum
launched optical power of the optical interfaces is less than 10
dBm (10 mW).
Mechanical Specifications
The mechanical specifications of the LWX are as follows:
- Dimensions (mm): 25.4 (W) x 235.2 (D) x 261.4 (H)
- Weight (kg): 1.1
Power Consumption
The maximum power consumption of the LWX at room temperature (25°C)
is 30 W.
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