Narrow Linewidth DFB Lasers & SLD Modules from icrolight

icrolight is a high-tech enterprise specializing in the R&D, manufacturing and sales of active and passive photonic devices for microwave photonics, LiDAR ranging, gas sensing, fiber optics and photomedicine. Equipped with mature technical platforms, automated packaging production lines and high-precision testing systems, we mass-produce high-performance active and passive optical components. Our products are widely adopted in microwave photonics, telecom & data communication, 5G/RF optical transmission, medical detection, test & measurement instruments, fiber optic sensing, satellite radar optical transmission, LiDAR, quantum communication and gas sensing sectors.

Beyond our standard product lineup, icrolight offers flexible custom development and small-batch sample prototyping services. Diverse cooperation models fully meet customers’ full-cycle demands from prototype verification to mass production.

NDFB-1550-05-14-PM-XX: 1550nm Polarization-Maintaining Narrow Linewidth DFB Laser

Ideal for Fiber Sensing & Coherent Communications

The NDFB-1550-05-14-PM-XX is a high-performance narrow linewidth DFB laser housed in a 14-pin butterfly package, integrated with a built-in monitor photodiode (PD) and thermoelectric cooler (TEC). It is engineered for high-precision fiber sensing, coherent optical communication, microwave photonic signal processing and other applications requiring ultra-stable, low-linewidth light sources.

Operating at 1550nm central wavelength, this laser delivers ultra-narrow spectral linewidth and superior side-mode suppression. Typical linewidth is less than 100kHz, SMSR exceeds 50dB, and RIN reaches -160dB/Hz, with output power ranging from 40mW to 100mW. The polarization-maintaining fiber output guarantees long-term polarization stability. The integrated TEC and PD enable precise temperature regulation and closed-loop power monitoring, ensuring consistent wavelength and power performance across wide operating temperatures with outstanding reliability.

Key Specifications (25°C)

• Central Wavelength: 1550nm
• Spectral Linewidth: <100kHz
• Output Optical Power: 40~100mW
• Side-Mode Suppression Ratio (SMSR): >50dB
• Relative Intensity Noise (RIN): -160dB/Hz
• Package: 14-pin butterfly package
• Integrated Features: Built-in monitor PD, internal TEC cooling, polarization-maintaining fiber pigtail

This laser serves as an optimal light source for distributed fiber sensing, coherent communication links, microwave photonic systems, high-resolution gas spectroscopy and quantum communication. It also fits high-precision light source requirements for scientific research and laboratory test instruments.

MSLD-840-04-10: 840nm Superluminescent Diode (SLD) Module

Optimized for Medical Imaging & Precision Sensing

The MSLD-840-04-10 is an 840nm SLD module with TO60 8-pin packaging, equipped with integrated monitor PD and TEC cooling. Featuring broad spectral bandwidth, ultra-low spectral ripple and stable output power, it acts as a core low-coherence light source for numerous optical measurement and imaging systems.

Centered at 840nm, this module achieves a -3dB spectral width ≥45nm, 10mW output power and only 0.3dB spectral ripple. It effectively suppresses coherent noise to boost resolution and measurement accuracy for imaging and sensing equipment. The built-in PD and TEC maintain closed-loop power and temperature stabilization, delivering consistent output performance and long-term operational reliability under diverse working conditions.

Key Specifications (25°C)

• Central Wavelength: 840nm
• -3dB Spectral Bandwidth: ≥45nm
• Output Optical Power: 10mW
• Spectral Ripple: 0.3dB
• Package: TO60 8-pin package
• Integrated Features: Built-in monitor PD, internal TEC cooling

It is widely deployed in Optical Coherence Tomography (OCT), Fiber Optic Gyroscopes (FOG), precision geometric metrology, medical photonic imaging and white-light interferometry sensing systems. It also supports biological detection and industrial non-destructive testing scenarios with strict low-coherence light source requirements.

Custom Development & Product Sourcing

With self-owned packaging and testing facilities and a professional technical team, icrolight provides customized wavelength design, customized packaging options and tailored performance specifications. We support fast small-volume sample delivery to assist customers with scheme validation and product iteration. Besides the two models introduced above, we also supply multi-band narrow linewidth lasers and SLD devices covering 1064nm, 1310nm, 1570nm and more, including discrete chips and complete modules.

If you need full datasheets, custom solution evaluation or bulk order quotations, please reach out to our photonicssource sales team. icrolight delivers stable, cost-effective optical products and flexible technical services to accelerate the development of your photonic systems.