The Keysight 83402C Lightwave Source Module is a plug-in optical signal source for the 83400 series mainframe, delivering stable, tunable output at 1310 nm for precision characterization of optical components and systems. Built on DFB laser technology, this module combines narrow spectral width with broad modulation capability, enabling both DC and RF-modulated measurements across demanding test scenarios.
Technical Specifications
• Wavelength: 1310 nm ± 30 nm
• Laser Type: DFB (Distributed Feedback)
• Spectral Width: < 50 MHz
• Average Optical Output Power: 2000–3000 µW
• Modulation Bandwidth: 300 kHz to 6 GHz
• Optical Fiber: 9/125 µm, PC connector interface
• Optical Port Return Loss: ≥ 35.0 dB
• RF Input Power (Max): +11 dBm
• DC into RF Port (Max): 20 V
• Electrical Port Return Loss: ≥ 11 dB
– Key Features
• High-stability DFB source with narrow spectral linewidth
• Wideband modulation from 300 kHz to 6 GHz
• Excellent return loss performance at optical and RF ports
• Direct RF modulation capability for dynamic signal generation
• Standard 9/125 µm fiber and PC connector for field deployment
– Typical Applications
• Optical component characterization and validation
• Modulation response and bandwidth testing
• Return loss and reflection measurements
• Integrated lightwave system analysis within the 8702 Series framework
– Compatibility & Integration
Designed as a plug-in module for 83400 series mainframes. Functions as an accessory to 8702 Series Lightwave Component Analyzers, providing the signal source required for comprehensive optical measurements.


















