1310nm single-frequency laser module with 20kHz narrow linewidth and 20mW stable output. Optimized for fiber optic sensing, coherent detection, high-speed LiDAR and scientific research, customizable for OEM integration.
Model: unl-1310nm-20k-20mw-x
Dongz
Email: Sales@wxgphotonics.com
This 1310nm single-frequency laser module features a 20kHz narrow linewidth and stable 20mW optical output, operating at the classic low-loss fiber optic communication window. With excellent wavelength stability, low RIN noise and high beam quality, it is the optimal light source for fiber optic sensing, coherent detection, high-speed LiDAR, medical photonics and scientific research equipment. Flexible customization options are available to meet your OEM system integration requirements.
Optical and Electrical Parameters (TLD=25°C)
| Params | Symbol | Conditions | Min. | Type. | Max. | Unit |
|---|---|---|---|---|---|---|
| Threshold current | Ith | CW | 35 | mA | ||
| Center wavelength | λC | 1305 | 1310 | 1315 | nm | |
| Output fiber optic power | Pf | CW | 20 | mW | ||
| Lorentzian line width* | FWHM | CW | 20 | kHz | ||
| Relative Intensity Noise | RIN | ≥1kHz | -120 | dB/Hz | ||
| Edge Mold Suppression Ratio | SMSR | CW | 55 | dB | ||
| Polarization Extinction Ratio | PER | CW | 20 | dB | ||
| Optical Isolation | ISO | 50 | dB | |||
| TEC Setpoint Temperature | TTEC | CW | 15 | 45 | ℃ | |
| Operating Temperature | To | -20 | 60 | ℃ | ||
| Operating Humidity | % | 5 | 85 | % |
*Determination of Lorentz Line Width Using the Delayed External Heterodyne Method

Typical Lorentz line width (10 kHz)

Dimensions and Electrical Specifications
| Params | Values | Unit |
|---|---|---|
| External Dimensions | L×W×H=101.8×57.20×12.80 | mm |
| Built-in pigtail type | SMF/PMF | |
| Connector | FC/APC | |
| Power Supply | DC 5V/3A | |
| Data Interface | DB9 is defined as shown in the figure above. | |
| Safety Control | Interlock |