C-band (* Note 1) erbium-doped fiber small signal amplifier (PA, Pre-Amplifier) is an amplifier specifically designed for weak optical signals in the C-band range of -45dBm to -25dBm. The typical gain of small signals is as high as 35~45 dB, and it has a low noise index. Used before the photodetector to improve its ability to detect weak light signals.
*Note 1: This EDFA product can be used for amplifying signals of any single or multiple wavelengths within the working wavelength range, but the gain spectrum flatness is not considered when inputting multi wavelength signals. As shown in the figure on this page, the EDFA-PA-35 small signal amplifier can achieve high gain amplification for input signals of different wavelengths in the C-band (multiple wavelengths are not simultaneously input to the EDFA in the figure). When the input power of a single wavelength is -35dBm, the effective gain is greater than 35dB, and the amplified signal background noise ratio is greater than 30dB.
| Optical Parameter | Unit | Typical Values | Remark | |
| Model | – | EDFA-PA-35 | EDFA-PA-45 | |
| Wavelength Range | nm | 1530~1565 | C-band | |
| Input Power | dBm | -35~-25 | -45~-25 | |
| Small signal gain coefficient | dB | 35@-35dBm input | 45@-45dBm input | 35@-25dBm input |
| Noise | dB | ≤4.5 | ||
| Polarization Dependent Gain | dB | ≤0.3 | ||
| Polarization Mode Dispersion | ps | ≤0.5 | ||
| Input/output Isolation | dB | >35 | ||
| Optical power monitoring | – | Input optical power monitoring; Output optical power monitoring | ||
| Fiber Type | – | SMF-28e | 1.0m length | |
| Optical Connector | – | FC/APC | ||
| Working mode | – | ACC/APC | *Note 2 | |
| Electrical and environmental parameters | Desktop | Module | |
| Control Mode | Touch screen / RS232 | RS232 | |
| Communication Interface | DB9 Female | ZH1.5-3Pin | DB9 Female |
| Power Supply | 100~240V AC, <30W | 5V DC, <15W | |
| Actual power consumption (W) | ≤8 | ≤6 | |
| Cooling method | Internal air cooling | Contact heat dissipation | |
| Dimensions(mm) | 255(W)×285(D)×115(H) | 70(W)×90(D)×15(H) | 125(W)×150(D)×20(H) |
| Operation Temperature Range | -5~+35°C | ||
| Operation Humidity Range | 0~70% | ||
*Note 2: ACC mode: Auto current control, the EDFA pump working current is set by the user and automatically locked by the EDFA to achieve a constant pump current. When the input optical power fluctuates, the output power will also fluctuate accordingly, which is applicable to all EDFA models.
APC mode: Auto power control mode, where the user sets the signal light output power of the fiber amplifier. The fiber amplifier automatically controls and adjusts the pump current based on the output power monitored by the PD to achieve stable output signal. In APC mode, the user can adjust the output power within a range of 10% to 100% of the maximum output power. The advantage of APC mode is that when the input optical power fluctuates, the amplifier will minimize the fluctuation of output power as much as possible.
When you inquire, please provide the correct P/N number according to our ordering information, and attach the appropriate description would be better.
| ① | ② | ③ | ④ | ⑤ | ⑥ |
| EDFA | Operation Wavelength | Amplifier type | Gain(dB) | Fiber Type | Package Type |
| C: C-band | PA: Small signal amplifier | 35:35dB@-35dBm
45:45dB@-45dBm |
SM: SMF-28e | M: Module
B: Desktop |
If you need to customize other specifications, please provide detailed description for your requirement.
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