

DK Photonics 1310nm Narrow Linewidth CW Fiber Laser adopts rare earth-doped fiber DFB laser cavity structure, output wavelength 1310nm single longitudinal mode laser, spectral linewidth is less than 20kHz, output spectral side mode suppression ratio exceeds 50dB, can provide module or desktop package, it is distributed Ideal laser source for applications such as sensing.
| Optical Parameter | Unit | Typical Values | Remark | |
| Wavelength tuning range | nm | 1310±5 | ||
| Wavelength instability | MHz | ≤±100 | ||
| Spectral linewidth | kHz | ≤20 | *3dB laser linewidth=20dB beat linewidth/20 | |
| Working mode | – | CW, single frequency single longitudinal mode | ||
| Side mode suppression ratio | dB | ≥60 | ||
| Output power | mW | 20 | Default fixed output | |
| Short-term Stability (15 Minutes) | dB | ≤ ±0.02 | ||
| Long-term Stability (8 Hours) | dB | ≤ ±0.05 | ||
| Polarization State | – | Random | linear polarization | |
| PER | dB | – | ≥20 | |
| Fiber Type | – | SMF-28e | PM1550 Panda | |
| Optical Connector | – | FC/APC | FC/APC | |
| Electrical and environmental parameters | Desktop | Module |
| Control Mode | Button / RS232 | RS232 |
| signal interface | DB9 female | ZH1.5-3 PIN |
| Power Supply | 100~240V AC, <30W | 5V DC, 15W |
| Dimensions(mm) | 255(W)×285(D)×115(H) | M21 |
| Operation Temperature Range | -5~+35°C | |
| Operation Humidity Range | 0~70% | |
| ① | ② | ③ | ④ | ⑤ | ⑥ |
| NLSL | Wavelength(nm) | Spectral linewidth(kHz) | Output power (mW) | Fiber Type | Package Type |
| 1310:1310 | 20 | 20 | SM: SMF-28e
PM: PM1550 panda |
M: Module
B: Desktop |
If you need to customize other specifications, please provide detailed description for your requirement.