The ILX Lightwave FOS-79800D is a WDM DFB fiber optic source module engineered for precision optical testing in research, development, and production environments. It operates as a plug-in module within the FOM-7900B Fiber Optic System Mainframe, delivering high-stability, tunable laser output across C-band and L-band wavelengths. The module provides excellent power stability, precise wavelength control, and flexible modulation capabilities, making it ideal for EDFA, SOA, and fiber optic component characterization in WDM and CWDM test scenarios.
## Technical Specifications
**Optical Performance**
• Wavelength Range: 315C Series 1528 nm to 1564 nm (C-band); 315L Series 1564 nm to 1610 nm (L-band); custom wavelengths available
• Output Power: 315C1/315L1 ≥10 dBm; 315C2/315L2 ≥13 dBm; up to 20 mW per channel depending on model
• Power Stability: ±0.003 dB (post 1-hour warm-up, ±1°C ambient)
• Wavelength Stability: ±3 pm typical; ±25 pm over 90 days; ±50 pm over one year post-calibration
• Attenuation: High-resolution control within ±0.1 dB accuracy from maximum power to 5 dB down
**Modulation**
• Internal Synchronous Modulation: Up to 500 kHz
• Modulation Depth: 100% at 50% duty cycle
• TTL-level control via rear panel input with mainframe trigger synchronization for multi-module operation
**Interfaces**
• Optical: FC/APC connector
• Remote Control: GPIB/IEEE-488 and RS-232; LabVIEW drivers available
## Key Features
• Coherence control for SBS suppression and power stability
• Eight module slots per mainframe for flexible configuration
• Scalable architecture: up to 24 linked mainframes supporting 200 channels from single GPIB address
• Front panel menu or GPIB remote control
## Typical Applications
• EDFA and SOA characterization
• WDM and CWDM system testing
• Fiber optic component validation
• Multi-channel optical test scenarios
## Compatibility & Integration
The FOS-79800D requires the FOM-7900B Fiber Optic System Mainframe. Multiple mainframes can be linked to expand channel density, enabling high-density test configurations from a single control interface.
