The ILX Lightwave 7900B mainframe equipped with FOS79800D WDM DFB fiber optic source modules delivers high-performance laser characterization for multi-channel optical testing. This modular system accommodates up to 8 plug-in modules per mainframe, with the ability to link multiple units for up to 200 total channels. The FOS79800D series provides precise wavelength and power control across C-band and L-band spectra, making it suitable for WDM component validation, laser source characterization, and production test environments.
Technical Specifications
Optical Output
• Wavelength range: 1528 nm to 1610 nm (ITU grid or custom); C-band (1527.99–1564.26 nm) and L-band (1564.27–1610.06 nm); 1310 nm available
• Output power: 10 dBm minimum (315X1 series); 13 dBm minimum (315X2 series)
• Wavelength stability: ±3 pm with ±0.003 dB power stability
• Tuning range: ±0.85 nm (1.7 nm total per channel); 0.001 nm resolution
• Spectral width: 40 dB (>45 dB typical)
• Signal-to-background ratio: >30 dB
• Optical isolation: >30 dB
• Relative intensity noise: -145 dB/Hz
• Optical interface: FC/APC
Modulation
• Internal synchronous modulation: up to 500 kHz
• Modulation frequency range: 1–500 kHz
• Modulation depth: 100%; duty cycle 50%
• Transition time: 30 ms (off to on); 10 ms (on to off)
• Repeatability: ±0.01 dB
• Lifetime: >10 million cycles
– Key Features
• Multi-channel laser source integration with scalable architecture
• Precise current and temperature management for laser diode control
• Tunable DFB lasers across extended C and L bands
• High spectral purity and low noise floor for component-level testing
• Modular plug-in design supports mixed module configurations
– Typical Applications
• WDM system and component test and validation
• Laser diode characterization in R&D and production
• Multi-wavelength optical source deployment
• Fiber optic component performance verification
– Compatibility & Integration
The FOS79800D modules integrate into the FOM-7900B mainframe. Multiple mainframes can be linked for extended channel capacity.
