The ILX Lightwave FOS-79800 Series WDM DFB Fiber Optic Source Modules are precision wavelength-tunable sources designed for testing and characterization of fiber optic components and systems in WDM environments. When integrated into the FOM-7900B mainframe, these modules deliver stable, accurate optical power across the S-, C-, L-, and Extended L-bands with 1 pm resolution tuning and adjustable modulation. They provide exceptional wavelength and power stability for laboratory and production testing applications.
## Technical Specifications
• Wavelength Range: 1475 nm to 1625 nm (S-band: 1475–1527.97 nm; C-band: 1527.98–1564.26 nm; L-band: 1564.27–1610 nm; Extended L-band: 1610.01–1625 nm)
• Service Channel Wavelengths: 1310 nm, 1480 nm, 1510 nm, 1625 nm (±5 nm)
• Wavelength Tuning: User-selectable ITU grid or custom; 1 pm resolution over 1.7 nm range
• Output Power: 10 dBm minimum (315X1 series); 13 dBm minimum (315X2 series); 9–20 mW maximum range
• Power Stability: <0.005 dB rms; ±0.003 dB over 15 minutes
• Wavelength Stability: ±0.003 nm; ±3 pm for 90 days post-calibration; ±50 pm for one year
• Spectral Linewidth: 30 MHz to 1 GHz (coherence control adjustable)
• Attenuation Accuracy: ±0.1 dB from maximum power down to 5 dB
## Key Features
• Processor-controlled modulation (1–500 kHz) with 100% depth, 50% duty cycle
• Synchronous multi-module modulation via mainframe trigger capability
• Coherence control for SBS suppression and reflection-induced stability improvement
• Optional source shutter for simplified channel equalization
• PM alignment and custom connector options available
## Typical Applications
• WDM system and component characterization
• Channel equalization and power balancing
• Fiber optic component testing in laboratory and production environments
## Compatibility & Integration
These modules operate exclusively within the ILX Lightwave FOM-7900B Fiber Optic System Mainframe, which provides power supply, control processing, and multi-module synchronization infrastructure.
