Narrow-linewidth laser 20 mW Linewidth 3kHz Suitable for fiber optic sensing
Description：This is a semiconductor laser with a linewidth less than 3k and an output optical power of 20mW. Equipped with a stable laser driver circuit, the laser module enables stable output of 1550nm laser light, making it highly suitable for use in distributed fiber optic acoustic sensing (DAS) or DVS systems.
Applications： Fiber Optic Sensing Lidar Scientific Research Equipment
Tags：Narrow Linewidth Laser Laser used in DAS 3k Linewidth Laser
Wavelength：1550nm
Output Power：20mW
Model：unl-1550nm-3k-20mw
Dongz
Email: Sales@wxgphotonics.com
The 1550nm center wavelength ultra-narrow linewidth single-frequency laser module features an ultra-narrow linewidth, high output power, wavelength stability, low noise, low power consumption, and ease of use, making it a high-performance semiconductor laser module product. This module can be used in lidar, coherent detection, fiber optic sensing, medical photonics, scientific research equipment, 3D mapping, and other fields.
1. Technical Advantages
- Silicon photonics integrated chip technology
- High-performance semiconductor laser technology
- High-precision semiconductor packaging processes
2. Features
- Ultra-narrow linewidth (≤3 kHz)
- Single-frequency center wavelength at 1550 nm, supporting customization for any wavelength within the C-band
- Stable output power and wavelength
- High output optical power
- Low RIN noise
- Low power consumption
- Low-noise, high-precision circuit design
3. Product Applications
- Fiber Optic Sensing
- Lidar
- Coherent Detection
- Scientific Research Equipment
4. Product Specifications
Optical and Electrical Parameters (TLD=30°C)
| Parameters | Symbol | Conditions | Min. | Type. | Max. | Unit |
|---|---|---|---|---|---|---|
| Threshold current | Ith | CW | 35 | mA | ||
| Center wavelength | λC | 1535 | 1550 | 1565 | nm | |
| Output fiber optic power | Pf | CW | 10 | mW | ||
| Lorentzian linewidth* | FWHM | CW | 3 | kHz | ||
| Relative Intensity Noise | RIN | ≥1kHz | -145 | dB/Hz | ||
| Side-mold Suppression Ratio | SMSR | CW | 60 | dB | ||
| Polarization extinction ratio | PER | CW | 20 | dB | ||
| Optical Isolation | ISO | 50 | dB | |||
| TEC Set temperature | TTEC | CW | 15 | 45 | ℃ | |
| Operating Temperature | To | -20 | 60 | ℃ | ||
| Operating Humidity | % | 5 | 85 | % |
*Lorentzian Linewidth Measurement Using Delayed Heterodyning Method
Typical Lorentzian line width (2 kHz)
5. Electrical and Physical Parameters
Dimensions and Electrical Specifications
| Item | Parameters | Unit |
|---|---|---|
| External Dimensions | L×W×H=81.68*47.00*14.00 | mm |
| Built-in pigtail type | SMF/PMF | |
| Connector | FC/APC | |
| Power Supply | DC 5V/3A | |
| Safety Control | Interlock |
6. Order Info
unl-1550nm-3k-20mw-1： Wavelength: 1550 nm, linewidth less than 3 kHz, output power 20 mW, single-mode fiber.
unl-1550nm-3k-20mw-0：Wavelength: 1550 nm, linewidth < 3 kHz, output power: 20 mW, polarization-maintaining fiber.
Excerpt from Customised Client Testing Declaration:
