DK Photonics 1550nm Narrow Linewidth Semiconductor Laser uses an ultra narrow linewidth external cavity semiconductor laser chip to output a single longitudinal mode laser with a wavelength of 1550nm and a spectral linewidth of less than 200kHz. It is coupled with a single mode or polarization maintaining fiber and provides module or desktop packaging. It is a cost-effective excitation light source that can be used for distributed sensing.
| Optical Parameter | Unit | Typical Values | Remark | |
| Wavelength tuning range | nm | 1550±1 | ||
| Spectral linewidth | kHz | ≤150; ≤200 | *3dB linewidth/20dB linewidth/20 | |
| Wavelength instability | MHz | ≤±100 | @8h | |
| Side mode suppression ratio | dB | ≥50 | ||
| Output power | mW | 20/50/100 | ||
| Working mode | – | CW | ||
| Short-term Stability (15 Minutes) | dB | ≤ ±0.02 | Equivalent ≤ ± 0.5% | |
| Long-term Stability (8 Hours) | dB | ≤ ±0.05 | Equivalent ≤ ± 1.2% | |
| Polarization state | – | random | linear polarization | |
| Fiber Type | – | SMF-28e | PM1550 | |
| PER | dB | / | ≥23 | |
| Optical Connector | – | 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 | 15V DC, 15W |
| Dimensions(mm) | 255(W)×285(D)×115(H) | 70(W)x90(D)x15(H)mm |
| Operation Temperature Range | -5~+35°C | |
| Operation Humidity Range | 0~70% | |
| ① | ② | ③ | ④ | ⑤ |
| NLSL | Wavelength | Output power (mW) | Fiber Type | Package Type |
| 1550:1550nm | 20/50/100 | SM: SMF-28e
PM: PM1550 panda |
M: Module
B: Desktop |
If you need to customize other specifications, please provide detailed description for your requirement.
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