Ultra-narrow Linewidth Single-frequency Fiber Laser (3kHz)
The laser adopts the advanced active fiber DFB short straight cavity structure, ensuring the stable output of the single longitudinal mode of the fiber laser. The module adopts the proprietary shockproof and noise reduction design and cooperates with the stable and low-noise drive circuit to ensure the high-performance and stable operation of the laser.
Characteristics of Ultra-narrow Linewidth Single-frequency Fiber Laser
- Spectral linewidth less than 3kHz
- High side mode rejection ratio
- High-frequency stability, no mode hopping
- Low relative intensity noise
Applications of Ultra-narrow Linewidth Single-frequency Fiber Laser
- Distributed optical fiber sensing
- Coherent optical communication
- Fiber optic hydrophone
- Lidar
| Parameter index | Unit | Numerical value |
| Central wavelength range | nm | 1550 |
| Side mode rejection ratio | dB | > 50 |
| Output power | mw | 20 (Note:10-1000mw multiple specifications are available) |
| Polarization state | Random polarization / linear polarization | |
| Polarization extinction ratio | dB | > 23 |
| Degree of polarization | % | 99 |
| Spectral linewidth | kHz | 3kHz |
| Frequency instability | Frequency instability | <20 ( 15min)<100 (long-term) |
| Relative intensity noise @>1MHz | dB/Hz | <-120dB/Hz@1MHz |
| Phase noise@10kHz | – | <1% |
| Output fiber type | Single mode fiber SMF-28e or Polarization maintaining fiber PM1550 | |
| Supply voltage | VDC | 5 |
| Product size | mm | 120x80x30 (modular) |
| 296x260x89 (table mode) | ||
Ordering Information of Ultra-narrow Linewidth Single-frequency Fiber Laser
| UNDFBL | Wavelength (nm) | Output power (mw) | Output fiber type | Connector form | Module size |
| 1550 | 100 . . . 30 20 10 | SMF: Random polarization output of single-mode fiber PMF: Polarization maintaining fiber, line polarization output | FC/APC FC/PC | M4: 120x80x25 B= Benchtop |
