1550nm Linear Chirp Narrow Linewidth Laser | Adjustable Chirp for DAS & FMCW
The GY-UNL-Chirp is a high-performance linear chirp narrow linewidth laser engineered exclusively for advanced coherent sensing systems. Operating at the 1550nm low-loss optical window, it combines ultra-narrow intrinsic linewidth with programmable linear frequency chirp functionality, featuring adjustable chirp rate, chirp bandwidth, and stable optical output power.
Model： gy-unl-chirp
Dongz
Email: Sales@wxgphotonics.com
Designed to eliminate the limitations of fixed-frequency lasers, it delivers exceptional phase stability and ultra-low RIN noise, making it the definitive light source for chirp-enhanced Distributed Acoustic Sensing (DAS), FMCW fiber optic sensing, and high-resolution optical time-domain reflectometry (OTDR) applications. It supports full OEM customization to match the dynamic requirements of your sensing system.
1. Applications
- Programmable Linear Chirp
Adjustable chirp rate and bandwidth for dynamic frequency modulation in coherent sensing systems. - Ultra-Narrow Intrinsic Linewidth
Maintains narrow linewidth performance during chirp operation, ensuring high coherence and sensing precision. - Exceptional Phase & Frequency Stability
Minimizes signal distortion for weak acoustic wave detection in Chirp DAS systems. - Ultra-Low Noise Performance
Low RIN and low phase noise ensure high signal-to-noise ratio (SNR) in long-distance sensing. - 1550nm Low-Loss Operation
Optimized for long-haul fiber optic sensing links, compatible with standard single-mode fiber (SMF). - OEM Integration Optimized
Compact packaging, standard FC/APC connector, and external control interface for seamless system integration.
2. Features
- Modular design
- High reliability
- Customizable form factor
3. Specifications and Parameters
| Params | Unit | GY-UNL-Chirp-40 | GY-UNL-Chirp-100 |
|---|---|---|---|
| Center wavelength | nm | 1550.12 | |
| Output optical power | mW | 10 | |
| Enable input signal | V | Analog Enable (0-1V @ 50Ω) | |
| RF Input Frequency | MHz | 60~100 | 150~250 |
| RF Bandwidth | MHz | 40 | 100 |
| RF input signal | V | Sine wave Vpp 1.0–2.0 V @ 50 Ω | |
| Pigtail Type | / | SMF-28 | |
| Pigtail connector | / | FC/APC | |
| Dimensions (excluding fiber optic cable) | mm | 148 * 132.5 * 24 | |
| Operating Voltage | V | 12 | |
| Power consumption | W | 12 | |
| Operating Temperature | ℃ | -20 ~ 60 | |
| Storage temperature | ℃ | -40 ~ 85 | |
4. Dimensions
5. Interface Definition
The interface definition for the GY-UNL-Chirp Sweep Pulse Light Source is as follows:
| Interface Type | Screen printing | Description |
|---|---|---|
| Green Plug-in Terminal | 12V | DC power supply +12V |
| GND | DC Power Supply GND | |
| Mechanical knob | VOA | Adjust the output light intensity of the local oscillator |
| SMA Female Connector | Enable | Enable signal input |
| SMA Female Connector | RF in | RF signal input |
| Fiber Optic Interface | Local | Local Oscillator Output, Default FC/APC Connector |
| Fiber Optic Interface | Pulse | Optical pulse output, default FC/APC connector |
6. Internal Structure of the Module
7. Order Info
| Product Categories | RF Input Frequency | RF Bandwidth |
|---|---|---|
| GY-UNL-Chirp-40 | 60~100MHz | 40MHz |
| GY-UNL-Chirp-100 | 150~250MHz | 100MHz |
