Innolume DFB/DBR Laser Diode – single-mode narrow-linewidth source 780–1330 nm

The DFB/DBR laser diode (Distributed-Feedback / Distributed Bragg Reflector) from Innolume is a semiconductor source of coherent light operating in a single longitudinal mode thanks to a built-in Bragg grating along the active region. Using the proprietary quantum-dot technology, these lasers provide high wavelength stability and a very narrow spectral linewidth across the near-infrared range of 780–1330 nm.

A distributed-feedback (DFB) laser diode is a semiconductor laser whose active region contains periodic variations of the effective refractive index along the resonator. This structure forms a distributed Bragg reflector (DBR), acting as a wavelength filter – it transmits the selected mode and suppresses the others. As a result, the diode operates in a single longitudinal mode at a strictly defined wavelength, with high stability and a narrow spectral linewidth. Innolume DFB/DBR diodes operate in the near-infrared (NIR) range of 780–1330 nm, suitable for optical telecommunications, industrial sensors, spectroscopy and modern photonic systems.

Wide wavelength range: wavelength selection from the portfolio with a tolerance of ±1 nm; precise peak fine-tuning below 0.1 nm by adjusting chip temperature and current.
Single-mode operation: a single longitudinal mode at the set wavelength, eliminating spectral noise and mode hops.
Narrow spectral linewidth: typically down to a few hundred kHz (in selected designs down to a few kHz), which provides a long coherence length.
High temperature stability: several times better than in Fabry-Pérot lasers (approx. 100 pm/K versus 300–600 pm/K).
High frequency: direct modulation up to over 10 GHz in selected versions.
Configuration options: PM or single-mode fiber, optical isolator (built-in or external), various connectors (FC/PC, SC/APC, SC/PC, APC ferrule).

Single-wavelength DFB (standard): narrow spectral linewidth at a defined wavelength – telecommunications, spectroscopy, metrology.
Multi-wavelength arrays (custom R&D): on individual request.
High-power DFB: single-mode operation at significantly higher power – free-space communication, material processing, pumping of nonlinear optics.
Ultra-narrow-linewidth DFB: linewidth down to 150 kHz – quantum optics, coherent communication, LiDAR, atomic clocks.
Pulsed DFB: peak power up to 300 mW in ns pulses; the gain-switching technique yields 50 ps pulses with a peak power of 250 mW.
RF-modulated DFB: RF modules with direct modulation from a few tens of MHz up to a few GHz, versions with a built-in Bias-T.

• Telecommunications and Datacom – high-speed data transmission systems, optical modules, data-center communication
• Quantum technologies – quantum computing and communication, random number generation for quantum cryptography
• Biomedical research – fluorescence spectroscopy, photonic diagnostics, glucose analysis
• Industrial applications – laser material processing, precision calibration, picosecond pulse generation, atomic transition spectroscopy
• Scientific research – gravitational wave detectors, high-precision experiments, short pulse generation
• Sensors and detection – fiber optic sensors, atomic spectroscopy, frequency conversion
• LiDAR and remote sensing – distance measurement, 3D mapping, environmental monitoring, autonomous vehicles

Innolume DFB/DBR laser diodes are individually configured for the application requirements: selection of wavelength (with a tolerance of ±1 nm), power, package type (TO-can, butterfly 14-pin, RF 7-pin, chip-on-submount, fiber-coupled), fiber type (PM/single-mode), optical isolator and connectors (FC/PC, SC/APC and others). Contact us for the datasheet and a quotation tailored to your system. Ask for a quote.