Agilent / Keysight 86109A 30 GHz optical / 40 GHz electrical module range: 1000-1600 nm

The Agilent/Keysight 86109A is a plug-in module for 86100 series oscilloscopes that combines optical and electrical measurement channels in a single unit. It delivers 30 GHz optical bandwidth and 40 GHz electrical bandwidth across the 1000–1600 nm wavelength range, making it suitable for high-speed optical networking, component characterization, and advanced research in data transmission systems.

Technical Specifications

• Bandwidth: 30 GHz (amplified, optimized for 9/125 µm fibers)


• Wavelength range: 1000–1600 nm


• Characteristic RMS noise: 15 µW at 30 GHz BW


• Maximum average input power: 2 mW


• Flat frequency response designed to minimize pulse distortion Electrical Channel


• Bandwidth: 40 GHz (switchable to 18 GHz for improved noise performance)


• Input connector: 3.5 mm male


• Characteristic RMS noise: 0.5 mV at 40 GHz BW; 0.25 mV at 18 GHz BW


• Maximum input signal: ±2 Vdc Integrated Functions


• Built-in average power meter (calibrated optical receiver)

Key Features

• Single module integrates both optical and electrical measurement paths


• Selectable electrical bandwidth (40 GHz or 18 GHz) optimizes measurement noise for signal dynamics


• Flat frequency response minimizes distortion in optical pulse analysis


• Designed for 9/125 µm single-mode fiber


• Low characteristic noise across both channels

Typical Applications

• High-speed optical waveform characterization


• Optical receiver and transmitter testing


• Data center and telecom component validation


• Optical signal quality assessment in 1000–1600 nm systems

Compatibility & Integration The 86109A plugs into the following Agilent/Keysight mainframes: 86100A/B (Infiniium DCA), 86100C (Infiniium DCA-J), and 86100D (Infiniium DCA-X).