ILX Lightwave FOS79800

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.