The DK Photonics 1550 nm High Power Fiber Laser is an advanced laser source engineered for demanding applications in fiber sensing, lidar, and fiber laser seeding. Based on a high-reliability DFB (Distributed Feedback) semiconductor laser chip and single‑mode fiber output, this source delivers narrow linewidth emission centered at 1550 nm with excellent short‑ and long‑term power stability. The design is comparable to leading 1550 nm benchtop and modular sources found in fiber optic test, lidar ranging, and coherent communication labs worldwide, while offering a compact footprint and flexible configuration options tailored to system integration or laboratory use.

Operating in the eye‑safer 1550 nm telecom band, this high power fiber laser is available with output levels of 5 W, 10 W, or 15 W, as well as lower dBm‑rated versions up to 43 dBm, allowing users to match the source precisely to their application’s power budget and link requirements. A typical linewidth of ≤0.1 nm and sideband rejection ratio greater than 50 dB support applications requiring spectral purity and low noise, such as interferometric fiber optic sensors, coherent detection schemes, and high dynamic range measurement systems. The source is built around single‑mode SMF‑28e or polarization‑maintaining PM1550 panda fiber, ensuring excellent beam quality and stable polarization performance when required.

The 1550 nm fiber laser employs a professionally designed driving circuit and TEC (thermoelectric cooler) control loop that tightly regulate the operating temperature of the DFB chip. This thermal management minimizes wavelength drift and output fluctuations, resulting in typical power stability better than ±0.02 dB over 15 minutes and ±0.05 dB over 8 hours. Such stability is critical for distributed fiber sensing (DAS, DTS, DFOS), long‑range lidar, and precision metrology, where signal integrity over time directly impacts measurement accuracy and repeatability. The integrated safety protections and optimized electronics contribute to long device lifetime and reliable field operation, on par with industrial‑grade sources widely used in telecom and sensing networks.

For maximum flexibility, the DK‑XS‑DT‑006‑A/2 series is offered in both desktop and compact module packages. The desktop unit is ideal for research laboratories and engineering test environments, featuring button‑based control and operation from a universal 100–240 V AC supply. Its robust chassis and standard FC/APC fiber connector make it easy to deploy on an optical bench alongside other test instruments. The module version targets OEM and system‑level integration, drawing low‑voltage 5 V DC power and supporting RS232 control via a DB9 interface. This enables straightforward integration into rackmount platforms, lidar systems, fiber laser architectures, and automated measurement setups where remote control and monitoring are essential.

Designed for reliable performance in real‑world environments, this 1550 nm fiber laser source operates over a wide temperature range of -5 to +55 °C and humidity levels from 0 to 70%. These specifications make it suitable for both controlled laboratory settings and more challenging industrial or field deployments. Users can select between single‑mode and polarization‑maintaining output, choose from the specified power levels, and request different operating wavelengths within the 1540–1565 nm range when needed. With this combination of high power, narrow linewidth, excellent stability, and flexible packaging, the DK Photonics 1550 nm High Power Fiber Laser is a robust solution for advanced fiber optic sensing, lidar, and laser system development applications.