ILX Lightwave 7900B with FOS79800D Maninframe + Module

The ILX Lightwave 7900B Mainframe paired with the FOS79800D WDM DFB Fiber Optic Source Module creates a configurable optical test platform for WDM systems and component characterization. The 8-bay mainframe accommodates up to eight plug-in modules and supports synchronous modulation across multiple sources. The FOS79800D delivers precise wavelength control and stable optical output across the C-band and L-band spectrum, making this system ideal for demanding development and production test environments.

Technical Specifications

• Wavelength Range: 1528 nm to 1610 nm (C-band: 1527.98–1564.26 nm; L-band: 1564.27–1610.06 nm)


• Output Power: Minimum 10 dBm (315x1 Series); Minimum 13 dBm (315x2 Series)


• Wavelength Accuracy: ±0.05 nm


• Attenuation: 10 dB calibrated range


• Internal Modulation Waveform Frequency: 0.1 – 500 kHz


• Modulation Input Frequency: 1 – 500 kHz


• Synchronous Modulation: Up to 500 kHz across sources


• Channel-to-Channel Synchronization: <100 ns


• Modulation Output: TTL level with gate delay <60 ns/mainframe and jitter <50 ns


• Module Capacity: Eight plug-in modules per mainframe


• System Expansion: Up to 200 channels across 25 linked mainframes

Key Features

• ITU grid point and user-defined wavelength selection


• GPIB/IEEE-488.2 interface for automated control


• RS-232 connectivity


• LabVIEW® instrument drivers available


• Modular architecture supports mixed module types in single mainframe

Typical Applications

• WDM system and component testing


• Multi-channel optical source control and measurement


• Research and development environments requiring high stability


• Automated test sequences via GPIB programming

Compatibility & Integration The FOM-7900B mainframe can host FOS79800D/315 Series WDM DFB modules alongside FOS-79710 Fiber Optic Switch Modules and DPM-79810 Dual Power Meter Modules, enabling comprehensive optical system characterization within a single platform.