Agilent/Keysight 83403B Lightwave Receiver

The Agilent/Keysight 83403B Lightwave Receiver is a high-performance optical-to-RF conversion module engineered for precision signal detection and analysis across broadband applications. It converts modulated optical signals into electrical RF outputs with exceptional linearity and low noise, supporting frequency response from 300 kHz to 6 GHz. The module delivers 0.053 W/A responsivity at 140 MHz modulation frequency and maintains tight modulation frequency response control across multiple correction methods, making it essential for lightwave component characterization, optical communication testing, and RF signal analysis requiring high sensitivity and dynamic range.

– Technical Specifications

• Frequency Range: 300 kHz to 6 GHz
• Responsivity: 0.053 W/A (–25.5 dBm) at 140 MHz modulation frequency
• Modulation Frequency Response (Corrected, disk): ±0.5 dBm and ±0.31 dBm
• Modulation Frequency Response (Corrected, polynomial): ±1.5 dBm
• Modulation Frequency Response (Uncorrected): +0.2/–4.8 dBm
• Modulation Distortion: 25.0 dBc (300 kHz–1 GHz); 8.0 dBc (1–6 GHz)
• Third Order Intercept: 23 dBm minimum
• Equivalent Input Noise: –124 dBm/Hz (0.01–5 GHz); –119 dBm/Hz (5–6 GHz)
• Reflection Sensitivity: ±0.04 dBm (300 kHz–6 GHz)
• RF Input Power (max): +11 dBm
• DC Input (max): 20 V
• Electrical Port Return Loss: ≥11 dB
• Optical Port Return Loss: ≥35.0 dBm
• Optical Fiber: 9/125 µm
• Laser Type: DFB (Distributed Feedback)
• Safety Classification: FDA Class I; IEC Class IIIB

– Key Features

• Low noise floor enables detection of weak optical signals
• Dual-correction capability (disk and polynomial) optimizes frequency response accuracy
• High third-order intercept supports large dynamic range measurements
• Low reflection sensitivity maintains signal integrity in optical and RF paths
• DFB laser source provides spectral stability for precision applications

– Typical Applications

• Optical receiver characterization and validation
• Lightwave component analysis and performance assessment
• Broadband RF signal detection from modulated optical sources
• Communication system testing and evaluation
• Electronic warfare signal measurement

– Compatibility & Integration

Designed for integration into Agilent/Keysight modular test platforms. RF connectivity via standard connectors (SMA or N-type, configuration-dependent). Optical interface uses industry-standard 9/125 µm fiber optic connectors.