DAS Integration Module Supporting Customized Pulsed RF Input
DAS Integration Module Supporting Customized Pulsed RF Input
Huang
Email: Hqy@ybphotonics.com
Summarize
This DAS module serves as the optical path for distributed acoustic sensing (DAS); it supports user-defined RF pulse inputs. Users can select either an 80 MHz or 200 MHz intermediate frequency signal and input the corresponding signal via an AWG, or it can receive user-generated chirped pulse signals.
Internal Optical Path Diagram of the Module
Core Parameters
| Parameter | Value | Remarks |
|---|---|---|
| Number of Channels | 1 | 2 channels optional |
| Supported Distance per Channel | 40 km | — |
| Laser Linewidth | <3 kHz | 1 kHz optional |
| Intermediate Frequency (IF) | 200 MHz | 80 MHz optional |
| RF Input | Supported | — |
| Spatial Resolution | 2–10 m | Adjustable pulse width: 20 ns–100 ns |
| Module Debug Interface | TTL Serial Port | — |
| Module Debug Protocol | Modbus‑RTU | — |
| Operating Temperature | -20 °C to 60 °C | — |
| Storage Temperature | -40 °C to 80 °C | — |
Differences between this module and other standard DAS modules
This module supports full-range RF signal input. For example, if you select a DAS module designed for a 200 MHz intermediate frequency signal, you can use an AWG to directly output a 200 MHz signal. Alternatively, you can provide your own chirped pulse signals to achieve higher-performance DAS.
What kind of capture card is needed?
Since this DAS module requires the output of 80/200 MHz RF signals, the data acquisition card must include an AWG function. To meet this requirement, we have specifically developed a 1 Gbps high-speed data acquisition card that also integrates an AWG function.
GY-DAQA-2510， View Detail
Ordering Information
| Model | Number of Channels | Laser Linewidth | Intermediate Frequency (IF) |
|---|---|---|---|
| GY‑DAS‑RF | 1: Single channel 2: Dual channel | 1: Linewidth <1 kHz 3: Linewidth <3 kHz | 200: 200 MHz IF 80: 80 MHz IF |
Example：To order a single‑channel module with 1 kHz linewidth and 200 MHz IF, the model is: GY‑DAS‑RF‑1‑1‑200
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FAQ
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Q: What is the lead time for your fiber optic sensing related module products?
A: Basically, we have more than 90% of modules in stock, only a few models need 2 weeks lead time. -
Q: Do you support the sale of those countries, and is the shipping included?
A: Our service is available worldwide, regardless of country or region. Shipping is included. -
Q: Who are your typical customers?
A: More than 100 top universities and research institutes in China have chosen us and given us high evaluations, such as: Chinese Academy of Sciences, CEC, Tsinghua University, Peking University and other clients.
