Distributed Temperature Sensing (DTS) Modules & Systems
Raman-based distributed temperature sensing hardware — from turnkey DTS-A mainframes to integrated modules with laser, WDM, APD and DAQ, plus compact optical-path modules for OEM builders and fluorescent point sensors for high-voltage equipment.
- Raman DTS Continuous temperature profiles along optical fiber
- Full integration Laser + WDM + APD + DAQ in one module (GY-DTS-M)
- Gigabit Ethernet UDP output of Stokes / anti-Stokes signals
- Enterprise to OEM Mainframes, modules, or optical-path-only builds
DTS Products by Application
DTS Mainframes & Turnkey Systems
Complete distributed fiber optic temperature measurement hosts with multi-channel support, built-in web management, and alarm outputs — ready for power cable, tunnel, and pipeline monitoring projects.
Full DTS Integration Modules
All-in-one Raman DTS modules integrating pulsed laser, Raman WDM, dual-channel APD, and 250 MSps acquisition — output Stokes and anti-Stokes data via Gigabit Ethernet UDP. Ideal when you develop your own DTS demodulation software.
DTS Optical Path Modules for OEM
Integrated optical front-end (pulsed laser, Raman WDM, APD) without on-board DAQ — pair with our DTS DAQ card (DTS-ETH-250M-2A) or your own acquisition hardware for custom chassis integration.
Fluorescent Point Temperature Sensors
YB-FFOT fluorescent fiber probes for high-voltage switchgear, transformers, and cable joints — point measurement with EMI immunity. Complements distributed Raman DTS for mixed monitoring projects (not a substitute for km-scale DTS along sensing cable).
How to Choose the Right DTS Hardware
- Need a complete DTS host for a project? DTS-A mainframe delivers multi-channel monitoring, web UI, alarms, and temperature output without building hardware from scratch.
- Developing your own DTS software on integrated hardware? GY-DTS-M outputs raw Stokes / anti-Stokes over UDP — focus R&D on demodulation algorithms.
- Building a custom DTS chassis with your DAQ? GY-DTS-MC provides the optical path only; add DTS-ETH-250M-2A or another high-speed acquisition board.
- Measuring temperature at specific high-voltage points? YB-FFOT fluorescent probes suit transformers and switchgear — different technology from distributed Raman DTS.
- Research lab assembling separated optical components? See our DTS Applications guide for pulsed lasers, WDM couplers, and APD modules, plus DTS DAQ cards.
For Raman principle and application scenarios, visit DTS Applications or How to integrate the DTS optical path in one enclosure.
What Are DTS Modules & Systems?
Distributed Temperature Sensing (DTS) measures temperature continuously along an optical fiber using Raman backscatter — Stokes and anti-Stokes signals vary with local temperature, enabling km-scale monitoring for power cables, pipelines, tunnels, and fire detection. A DTS system requires a pulsed laser, wavelength separation (WDM), sensitive detection (APD), and high-speed data acquisition, plus demodulation software.
YB Photonics DTS products span turnkey mainframes (DTS-A), fully integrated modules (GY-DTS-M with on-board DAQ), optical-path-only modules for OEMs (GY-DTS-MC), and fluorescent point sensors (YB-FFOT) for equipment hot-spot monitoring. Pair optical modules with our fiber sensing DAQ cards and EDFA modules when building long-range DTS links.
Key Specifications to Compare
| Parameter | Why it matters | Typical range in this category |
|---|---|---|
| Monitoring distance | Maximum fiber length per channel | Up to ~10 km (module / mainframe dependent) |
| Spatial resolution | Minimum locatable temperature event length | <1.5 m (DTS-A typical) |
| Integration level | Mainframe vs module vs optical path only | Full host, GY-DTS-M, or GY-DTS-MC + external DAQ |
| Data interface | How demodulation software receives signals | Gigabit Ethernet UDP, HTTP/WebSocket (DTS-A) |
| Fiber type | Multimode vs single-mode sensing cable | 62.5/125, 50/125 MM; 9/125 SM options |
Frequently Asked Questions
- What is the difference between GY-DTS-M and GY-DTS-MC?
- GY-DTS-M includes laser, WDM, APD, and a 250 MSps acquisition card with Ethernet UDP output — a complete sensing front-end except demodulation software. GY-DTS-MC integrates only the optical path and analog outputs; you supply your own DAQ such as our DTS-ETH-250M-2A.
- Is YB-FFOT the same as distributed Raman DTS?
- No. YB-FFOT is a fluorescent point sensor for localized high-voltage temperature measurement. Distributed Raman DTS (DTS-A, GY-DTS-M) profiles temperature along kilometers of sensing fiber — different technology and use case.
- Do I need a separate DAQ with GY-DTS-M?
- No — GY-DTS-M has an integrated 250 MSps acquisition card. You need demodulation software to convert Stokes / anti-Stokes data to temperature profiles. YB Photonics can provide demo temperature calculation software for evaluation.
- Which YB Photonics products pair with a DTS integration module?
- For separated research builds, combine pulsed DTS lasers, Raman WDM couplers, and APD receivers listed on our DTS Applications page, with a DTS DAQ card. For fastest integration, choose GY-DTS-M or DTS-A mainframe.