The New Focus 1544 is a DC-coupled photoreceiver module that converts optical signals to electronic signals across the 800–1650 nm band. Built around an InGaAs PIN photodiode, it delivers 12 GHz bandwidth with 32 ps rise time, making it ideal for high-speed optical characterization and signal detection in laser and fiber-optic systems.
Technical Specifications
• Detector: InGaAs PIN photodiode
• Wavelength Range: 800–1650 nm or 500–1630 nm
• 3 dB Bandwidth: DC to 12 GHz
• Rise Time: 32 ps
• Peak Responsivity: 0.85 A/W
• Noise Equivalent Power: 24 pW/√Hz (single-mode); 27 pW/√Hz (multimode)
• Saturation Power: 0.7 mW
• Maximum Conversion Gain: −800 V/W
• Maximum Transimpedance Gain: −1000 V/A
• Dark Voltage: Less than 5 mV
• Output Impedance: 50 Ω
• Power Requirements: ±15 VDC, 200 mA
– Key Features
• Switchable DC or AC coupling (10 kHz cutoff)
• Single-mode (9 µm core) and multimode (50/125 µm) fiber input options via FC/UPC connector
• Integrated bias monitor with 50 kHz bandwidth and 1 V/mA transimpedance gain
• Compact form factor (3.16 × 2.00 × 2.00 inches) with K-connector output
• Direct 50 Ω impedance matching to oscilloscopes and spectrum analyzers
– Typical Applications
• 10 Gbit/s component characterization and BER testing
• Eye diagram generation
• Pulsed laser, modulator, and transmitter frequency and time response analysis
– Compatibility & Integration
Accepts single-mode fiber (-B models) or multimode fiber (-50 models) via FC/UPC connectors. Operates with external ±15 VDC supplies; the Model 0901 power supply is recommended. Output connects directly to 50 Ω test instruments including oscilloscopes and spectrum analyzers.
