Exfo FLS-2600B – Tunable Laser Source

The EXFO FLS-2600B is a tunable laser source engineered for precision optical component and system testing across the C-band. It delivers fast wavelength sweeping, narrow linewidth output, and exceptional wavelength stability - essential for DWDM network development, filter characterization, and laboratory manufacturing environments. ## Technical Specifications Wavelength Tuning • Tuning range: 1510 nm to 1612 nm • Output power: >0 dBm (1515–1610 nm); >−10 dBm (1510–1612 nm) • Tuning resolution: 0.01 nm • Sweep speed: Up to 50 nm/s in continuous mode • Programmable sweep modes: Continuous and step-by-step • Wavelength repeatability: ±2.5 pm over 10 measurements • Wavelength stability: ±2.5 pm over 1 hour Optical Performance • Effective spectral linewidth (FWHM): Typically 700 MHz (1610 nm) to 2 GHz (1520 nm); typical 1.3 GHz • Coherence length: Approximately 15 cm in SMF-28 fiber • Mode-hop free across entire tuning range • Signal-to-SSE ratio: >65 dB • Signal-to-total-noise ratio: >45 dB • Dynamic range: >60 dB • Output power stability: ±0.01 dB over one hour • Output power control: ±10 dB attenuation range with automatic level control (ALC) selectable Interfaces & Control • Front panel control and remote access via GPIB or RS-232 • SCPI command set with LabVIEW driver support • Main output: FC/SC/E-2000 compatible connector • Monitor output: 5% tap for real-time wavelength monitoring • Trigger in/out: TTL-compatible for sweep synchronization ## Key Features • Mode-hop-free operation eliminates spectral discontinuities during tuning • Medium coherence length mitigates connector interference and parasitic reflection effects • Naturally low spontaneous emission for clean signal integrity • Dual control architecture supports both local and remote operation ## Typical Applications • DWDM system design and validation • Optical filter and component characterization • System simulation and performance modeling • Manufacturing test and quality assurance ## Compatibility & Integration The FLS-2600B integrates with external instruments via trigger I/O and communicates through industry-standard SCPI protocols. LabVIEW drivers and RS-232/GPIB interfaces enable seamless integration into automated test systems.